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Comparing libev/ev.c (file contents):
Revision 1.352 by root, Thu Oct 21 02:33:08 2010 UTC vs.
Revision 1.451 by root, Tue Jan 22 05:18:28 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* 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 */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396# endif 413# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 414#endif
402 415
403#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 418# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
412# else 425# else
413# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
414# endif 427# endif
415# endif 428# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 430#endif
424 431
425#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
426/* 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 */
427# include <stdint.h> 434# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
434# else 441# else
435# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
436# endif 443# endif
437# endif 444# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 446
443struct signalfd_siginfo 447struct signalfd_siginfo
444{ 448{
445 uint32_t ssi_signo; 449 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
447}; 451};
448# ifdef __cplusplus
449}
450# endif
451#endif 452#endif
452 453
453/**/ 454/**/
454 455
455#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
… …
457#else 458#else
458# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
459#endif 460#endif
460 461
461/* 462/*
462 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 465 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 468
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 471
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010002
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 519 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
480#else 535#else
481# define expect(expr,value) (expr) 536 #include <inttypes.h>
482# define noinline 537 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 538 #define ECB_PTRSIZE 8
484# define inline 539 #else
540 #define ECB_PTRSIZE 4
541 #endif
485# endif 542#endif
543
544/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place.
550 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0
554 #else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
486#endif 556 #endif
557#endif
487 558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
701
702#if __cplusplus
703 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__
706#elif ECB_C99
707 #define ecb_inline static inline
708#else
709 #define ecb_inline static
710#endif
711
712#if ECB_GCC_VERSION(3,3)
713 #define ecb_restrict __restrict__
714#elif ECB_C99
715 #define ecb_restrict restrict
716#else
717 #define ecb_restrict
718#endif
719
720typedef int ecb_bool;
721
722#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726
727#define ecb_function_ ecb_inline
728
729#if ECB_GCC_VERSION(3,1)
730 #define ecb_attribute(attrlist) __attribute__(attrlist)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality)
739#endif
740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
748#define ecb_noinline ecb_attribute ((__noinline__))
749#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
758
759#if ECB_GCC_VERSION(4,3)
760 #define ecb_artificial ecb_attribute ((__artificial__))
761 #define ecb_hot ecb_attribute ((__hot__))
762 #define ecb_cold ecb_attribute ((__cold__))
763#else
764 #define ecb_artificial
765 #define ecb_hot
766 #define ecb_cold
767#endif
768
769/* put around conditional expressions if you are very sure that the */
770/* expression is mostly true or mostly false. note that these return */
771/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
1209
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
490#define inline_size static inline 1214#define inline_size ecb_inline
491 1215
492#if EV_FEATURE_CODE 1216#if EV_FEATURE_CODE
493# define inline_speed static inline 1217# define inline_speed ecb_inline
494#else 1218#else
495# define inline_speed static noinline 1219# define inline_speed static noinline
496#endif 1220#endif
497 1221
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1261# include "ev_win32.c"
538#endif 1262#endif
539 1263
540/*****************************************************************************/ 1264/*****************************************************************************/
541 1265
1266/* define a suitable floor function (only used by periodics atm) */
1267
1268#if EV_USE_FLOOR
1269# include <math.h>
1270# define ev_floor(v) floor (v)
1271#else
1272
1273#include <float.h>
1274
1275/* a floor() replacement function, should be independent of ev_tstamp type */
1276static ev_tstamp noinline
1277ev_floor (ev_tstamp v)
1278{
1279 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif
1285
1286 /* argument too large for an unsigned long? */
1287 if (expect_false (v >= shift))
1288 {
1289 ev_tstamp f;
1290
1291 if (v == v - 1.)
1292 return v; /* very large number */
1293
1294 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f);
1296 }
1297
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */
1307 return (unsigned long)v;
1308}
1309
1310#endif
1311
1312/*****************************************************************************/
1313
1314#ifdef __linux
1315# include <sys/utsname.h>
1316#endif
1317
1318static unsigned int noinline ecb_cold
1319ev_linux_version (void)
1320{
1321#ifdef __linux
1322 unsigned int v = 0;
1323 struct utsname buf;
1324 int i;
1325 char *p = buf.release;
1326
1327 if (uname (&buf))
1328 return 0;
1329
1330 for (i = 3+1; --i; )
1331 {
1332 unsigned int c = 0;
1333
1334 for (;;)
1335 {
1336 if (*p >= '0' && *p <= '9')
1337 c = c * 10 + *p++ - '0';
1338 else
1339 {
1340 p += *p == '.';
1341 break;
1342 }
1343 }
1344
1345 v = (v << 8) | c;
1346 }
1347
1348 return v;
1349#else
1350 return 0;
1351#endif
1352}
1353
1354/*****************************************************************************/
1355
542#if EV_AVOID_STDIO 1356#if EV_AVOID_STDIO
543static void noinline 1357static void noinline ecb_cold
544ev_printerr (const char *msg) 1358ev_printerr (const char *msg)
545{ 1359{
546 write (STDERR_FILENO, msg, strlen (msg)); 1360 write (STDERR_FILENO, msg, strlen (msg));
547} 1361}
548#endif 1362#endif
549 1363
550static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
551 1365
552void 1366void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1368{
555 syserr_cb = cb; 1369 syserr_cb = cb;
556} 1370}
557 1371
558static void noinline 1372static void noinline ecb_cold
559ev_syserr (const char *msg) 1373ev_syserr (const char *msg)
560{ 1374{
561 if (!msg) 1375 if (!msg)
562 msg = "(libev) system error"; 1376 msg = "(libev) system error";
563 1377
564 if (syserr_cb) 1378 if (syserr_cb)
565 syserr_cb (msg); 1379 syserr_cb (msg);
566 else 1380 else
567 { 1381 {
568#if EV_AVOID_STDIO 1382#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1383 ev_printerr (msg);
572 ev_printerr (": "); 1384 ev_printerr (": ");
573 ev_printerr (err); 1385 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1386 ev_printerr ("\n");
575#else 1387#else
576 perror (msg); 1388 perror (msg);
577#endif 1389#endif
578 abort (); 1390 abort ();
579 } 1391 }
580} 1392}
581 1393
582static void * 1394static void *
583ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1396{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
591 */ 1402 */
592 1403
593 if (size) 1404 if (size)
594 return realloc (ptr, size); 1405 return realloc (ptr, size);
595 1406
596 free (ptr); 1407 free (ptr);
597 return 0; 1408 return 0;
598#endif
599} 1409}
600 1410
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1412
603void 1413void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1415{
606 alloc = cb; 1416 alloc = cb;
607} 1417}
608 1418
609inline_speed void * 1419inline_speed void *
… …
612 ptr = alloc (ptr, size); 1422 ptr = alloc (ptr, size);
613 1423
614 if (!ptr && size) 1424 if (!ptr && size)
615 { 1425 {
616#if EV_AVOID_STDIO 1426#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1427 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1428#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1429 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1430#endif
621 abort (); 1431 abort ();
622 } 1432 }
623 1433
624 return ptr; 1434 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1451 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1452 unsigned char unused;
643#if EV_USE_EPOLL 1453#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1454 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1455#endif
646#if EV_SELECT_IS_WINSOCKET 1456#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1457 SOCKET handle;
1458#endif
1459#if EV_USE_IOCP
1460 OVERLAPPED or, ow;
648#endif 1461#endif
649} ANFD; 1462} ANFD;
650 1463
651/* stores the pending event set for a given watcher */ 1464/* stores the pending event set for a given watcher */
652typedef struct 1465typedef struct
… …
694 #undef VAR 1507 #undef VAR
695 }; 1508 };
696 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
697 1510
698 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1513
701#else 1514#else
702 1515
703 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1518 #include "ev_vars.h"
706 #undef VAR 1519 #undef VAR
707 1520
708 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1530# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1531# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1532# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1533#endif
721 1534
722#define EVUNLOOP_RECURSE 0x80 1535#define EVBREAK_RECURSE 0x80
723 1536
724/*****************************************************************************/ 1537/*****************************************************************************/
725 1538
726#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1540ev_tstamp
728ev_time (void) 1541ev_time (void) EV_THROW
729{ 1542{
730#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
732 { 1545 {
733 struct timespec ts; 1546 struct timespec ts;
… …
757 return ev_time (); 1570 return ev_time ();
758} 1571}
759 1572
760#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
761ev_tstamp 1574ev_tstamp
762ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
763{ 1576{
764 return ev_rt_now; 1577 return ev_rt_now;
765} 1578}
766#endif 1579#endif
767 1580
768void 1581void
769ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
770{ 1583{
771 if (delay > 0.) 1584 if (delay > 0.)
772 { 1585 {
773#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
774 struct timespec ts; 1587 struct timespec ts;
775 1588
776 EV_TS_SET (ts, delay); 1589 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1591#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
780#else 1593#else
781 struct timeval tv; 1594 struct timeval tv;
782 1595
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1615
803 do 1616 do
804 ncur <<= 1; 1617 ncur <<= 1;
805 while (cnt > ncur); 1618 while (cnt > ncur);
806 1619
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1622 {
810 ncur *= elem; 1623 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1627 }
815 1628
816 return ncur; 1629 return ncur;
817} 1630}
818 1631
819static noinline void * 1632static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1633array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1634{
822 *cur = array_nextsize (elem, *cur, cnt); 1635 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1636 return ev_realloc (base, elem * *cur);
824} 1637}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1640 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1641
829#define array_needsize(type,base,cur,cnt,init) \ 1642#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1643 if (expect_false ((cnt) > (cur))) \
831 { \ 1644 { \
832 int ocur_ = (cur); \ 1645 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1646 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1647 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1648 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1649 }
837 1650
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1669{
857} 1670}
858 1671
859void noinline 1672void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1674{
862 W w_ = (W)w; 1675 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
864 1677
865 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
873 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
874} 1689}
875 1690
876inline_speed void 1691inline_speed void
877feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
878{ 1693{
… …
924 if (expect_true (!anfd->reify)) 1739 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1740 fd_event_nocheck (EV_A_ fd, revents);
926} 1741}
927 1742
928void 1743void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1745{
931 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
933} 1748}
934 1749
… …
937inline_size void 1752inline_size void
938fd_reify (EV_P) 1753fd_reify (EV_P)
939{ 1754{
940 int i; 1755 int i;
941 1756
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i)
1759 {
1760 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd;
1762
1763 if (anfd->reify & EV__IOFDSET && anfd->head)
1764 {
1765 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1766
1767 if (handle != anfd->handle)
1768 {
1769 unsigned long arg;
1770
1771 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1772
1773 /* handle changed, but fd didn't - we need to do it in two steps */
1774 backend_modify (EV_A_ fd, anfd->events, 0);
1775 anfd->events = 0;
1776 anfd->handle = handle;
1777 }
1778 }
1779 }
1780#endif
1781
942 for (i = 0; i < fdchangecnt; ++i) 1782 for (i = 0; i < fdchangecnt; ++i)
943 { 1783 {
944 int fd = fdchanges [i]; 1784 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1785 ANFD *anfd = anfds + fd;
946 ev_io *w; 1786 ev_io *w;
… …
948 unsigned char o_events = anfd->events; 1788 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 1789 unsigned char o_reify = anfd->reify;
950 1790
951 anfd->reify = 0; 1791 anfd->reify = 0;
952 1792
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 1794 {
964 anfd->events = 0; 1795 anfd->events = 0;
965 1796
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
991 fdchanges [fdchangecnt - 1] = fd; 1822 fdchanges [fdchangecnt - 1] = fd;
992 } 1823 }
993} 1824}
994 1825
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 1827inline_speed void ecb_cold
997fd_kill (EV_P_ int fd) 1828fd_kill (EV_P_ int fd)
998{ 1829{
999 ev_io *w; 1830 ev_io *w;
1000 1831
1001 while ((w = (ev_io *)anfds [fd].head)) 1832 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 1836 }
1006} 1837}
1007 1838
1008/* check whether the given fd is actually valid, for error recovery */ 1839/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 1840inline_size int ecb_cold
1010fd_valid (int fd) 1841fd_valid (int fd)
1011{ 1842{
1012#ifdef _WIN32 1843#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 1845#else
1015 return fcntl (fd, F_GETFD) != -1; 1846 return fcntl (fd, F_GETFD) != -1;
1016#endif 1847#endif
1017} 1848}
1018 1849
1019/* called on EBADF to verify fds */ 1850/* called on EBADF to verify fds */
1020static void noinline 1851static void noinline ecb_cold
1021fd_ebadf (EV_P) 1852fd_ebadf (EV_P)
1022{ 1853{
1023 int fd; 1854 int fd;
1024 1855
1025 for (fd = 0; fd < anfdmax; ++fd) 1856 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 1858 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 1859 fd_kill (EV_A_ fd);
1029} 1860}
1030 1861
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 1862/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 1863static void noinline ecb_cold
1033fd_enomem (EV_P) 1864fd_enomem (EV_P)
1034{ 1865{
1035 int fd; 1866 int fd;
1036 1867
1037 for (fd = anfdmax; fd--; ) 1868 for (fd = anfdmax; fd--; )
… …
1232 2063
1233/*****************************************************************************/ 2064/*****************************************************************************/
1234 2065
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2067
1237static void noinline 2068static void noinline ecb_cold
1238evpipe_init (EV_P) 2069evpipe_init (EV_P)
1239{ 2070{
1240 if (!ev_is_active (&pipe_w)) 2071 if (!ev_is_active (&pipe_w))
1241 { 2072 {
2073 int fds [2];
2074
1242# if EV_USE_EVENTFD 2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2078 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2079 fds [1] = eventfd (0, 0);
1246 2080
1247 if (evfd >= 0) 2081 if (fds [1] < 0)
2082# endif
1248 { 2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
1249 evpipe [0] = -1; 2092 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2093
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
2113inline_speed void
2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2115{
2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2117
2118 if (expect_true (*flag))
2119 return;
2120
2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
2137#if EV_USE_EVENTFD
2138 if (evpipe [0] < 0)
2139 {
2140 uint64_t counter = 1;
2141 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2142 }
1253 else 2143 else
1254# endif 2144#endif
1255 { 2145 {
1256 while (pipe (evpipe)) 2146#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1258 2148 DWORD sent;
1259 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1260 fd_intern (evpipe [1]); 2150 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else
2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1262 } 2155 }
1263
1264 ev_io_start (EV_A_ &pipe_w);
1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1266 }
1267}
1268
1269inline_size void
1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271{
1272 if (!*flag)
1273 {
1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1276
1277 *flag = 1;
1278
1279#if EV_USE_EVENTFD
1280 if (evfd >= 0)
1281 {
1282 uint64_t counter = 1;
1283 write (evfd, &counter, sizeof (uint64_t));
1284 }
1285 else
1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1292 write (evpipe [1], &dummy, 1);
1293 2156
1294 errno = old_errno; 2157 errno = old_errno;
1295 } 2158 }
1296} 2159}
1297 2160
… …
1300static void 2163static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2164pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2165{
1303 int i; 2166 int i;
1304 2167
2168 if (revents & EV_READ)
2169 {
1305#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1307 { 2172 {
1308 uint64_t counter; 2173 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2175 }
1311 else 2176 else
1312#endif 2177#endif
1313 { 2178 {
1314 char dummy; 2179 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1316 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
2190 }
1317 } 2191 }
1318 2192
2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2196
2197#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2198 if (sig_pending)
1320 { 2199 {
1321 sig_pending = 0; 2200 sig_pending = 0;
2201
2202 ECB_MEMORY_FENCE;
1322 2203
1323 for (i = EV_NSIG - 1; i--; ) 2204 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2205 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2207 }
2208#endif
1327 2209
1328#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1329 if (async_pending) 2211 if (async_pending)
1330 { 2212 {
1331 async_pending = 0; 2213 async_pending = 0;
2214
2215 ECB_MEMORY_FENCE;
1332 2216
1333 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1335 { 2219 {
1336 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2223 }
1339 } 2224 }
1340#endif 2225#endif
1341} 2226}
1342 2227
1343/*****************************************************************************/ 2228/*****************************************************************************/
1344 2229
2230void
2231ev_feed_signal (int signum) EV_THROW
2232{
2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
2235 EV_P = signals [signum - 1].loop;
2236
2237 if (!EV_A)
2238 return;
2239#endif
2240
2241 signals [signum - 1].pending = 1;
2242 evpipe_write (EV_A_ &sig_pending);
2243}
2244
1345static void 2245static void
1346ev_sighandler (int signum) 2246ev_sighandler (int signum)
1347{ 2247{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2248#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2249 signal (signum, ev_sighandler);
1354#endif 2250#endif
1355 2251
1356 signals [signum - 1].pending = 1; 2252 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2253}
1359 2254
1360void noinline 2255void noinline
1361ev_feed_signal_event (EV_P_ int signum) 2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
1362{ 2257{
1363 WL w; 2258 WL w;
1364 2259
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2261 return;
1367 2262
1368 --signum; 2263 --signum;
1369 2264
1370#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
… …
1374 if (expect_false (signals [signum].loop != EV_A)) 2269 if (expect_false (signals [signum].loop != EV_A))
1375 return; 2270 return;
1376#endif 2271#endif
1377 2272
1378 signals [signum].pending = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1379 2275
1380 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2278}
1383 2279
… …
1462 2358
1463#endif 2359#endif
1464 2360
1465/*****************************************************************************/ 2361/*****************************************************************************/
1466 2362
2363#if EV_USE_IOCP
2364# include "ev_iocp.c"
2365#endif
1467#if EV_USE_PORT 2366#if EV_USE_PORT
1468# include "ev_port.c" 2367# include "ev_port.c"
1469#endif 2368#endif
1470#if EV_USE_KQUEUE 2369#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2370# include "ev_kqueue.c"
… …
1478#endif 2377#endif
1479#if EV_USE_SELECT 2378#if EV_USE_SELECT
1480# include "ev_select.c" 2379# include "ev_select.c"
1481#endif 2380#endif
1482 2381
1483int 2382int ecb_cold
1484ev_version_major (void) 2383ev_version_major (void) EV_THROW
1485{ 2384{
1486 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1487} 2386}
1488 2387
1489int 2388int ecb_cold
1490ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1491{ 2390{
1492 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1493} 2392}
1494 2393
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2395int inline_size ecb_cold
1497enable_secure (void) 2396enable_secure (void)
1498{ 2397{
1499#ifdef _WIN32 2398#ifdef _WIN32
1500 return 0; 2399 return 0;
1501#else 2400#else
1502 return getuid () != geteuid () 2401 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2402 || getgid () != getegid ();
1504#endif 2403#endif
1505} 2404}
1506 2405
1507unsigned int 2406unsigned int ecb_cold
1508ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1509{ 2408{
1510 unsigned int flags = 0; 2409 unsigned int flags = 0;
1511 2410
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1517 2416
1518 return flags; 2417 return flags;
1519} 2418}
1520 2419
1521unsigned int 2420unsigned int ecb_cold
1522ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1523{ 2422{
1524 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1525 2424
1526#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1538#endif 2437#endif
1539 2438
1540 return flags; 2439 return flags;
1541} 2440}
1542 2441
2442unsigned int ecb_cold
2443ev_embeddable_backends (void) EV_THROW
2444{
2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2446
2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2449 flags &= ~EVBACKEND_EPOLL;
2450
2451 return flags;
2452}
2453
1543unsigned int 2454unsigned int
1544ev_embeddable_backends (void)
1545{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1547
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */
1550 flags &= ~EVBACKEND_EPOLL;
1551
1552 return flags;
1553}
1554
1555unsigned int
1556ev_backend (EV_P) 2455ev_backend (EV_P) EV_THROW
1557{ 2456{
1558 return backend; 2457 return backend;
1559} 2458}
1560 2459
1561#if EV_FEATURE_API 2460#if EV_FEATURE_API
1562unsigned int 2461unsigned int
1563ev_iteration (EV_P) 2462ev_iteration (EV_P) EV_THROW
1564{ 2463{
1565 return loop_count; 2464 return loop_count;
1566} 2465}
1567 2466
1568unsigned int 2467unsigned int
1569ev_depth (EV_P) 2468ev_depth (EV_P) EV_THROW
1570{ 2469{
1571 return loop_depth; 2470 return loop_depth;
1572} 2471}
1573 2472
1574void 2473void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1576{ 2475{
1577 io_blocktime = interval; 2476 io_blocktime = interval;
1578} 2477}
1579 2478
1580void 2479void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1582{ 2481{
1583 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1584} 2483}
1585 2484
1586void 2485void
1587ev_set_userdata (EV_P_ void *data) 2486ev_set_userdata (EV_P_ void *data) EV_THROW
1588{ 2487{
1589 userdata = data; 2488 userdata = data;
1590} 2489}
1591 2490
1592void * 2491void *
1593ev_userdata (EV_P) 2492ev_userdata (EV_P) EV_THROW
1594{ 2493{
1595 return userdata; 2494 return userdata;
1596} 2495}
1597 2496
2497void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1599{ 2499{
1600 invoke_cb = invoke_pending_cb; 2500 invoke_cb = invoke_pending_cb;
1601} 2501}
1602 2502
2503void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1604{ 2505{
1605 release_cb = release; 2506 release_cb = release;
1606 acquire_cb = acquire; 2507 acquire_cb = acquire;
1607} 2508}
1608#endif 2509#endif
1609 2510
1610/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1611static void noinline 2512static void noinline ecb_cold
1612loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1613{ 2514{
1614 if (!backend) 2515 if (!backend)
1615 { 2516 {
2517 origflags = flags;
2518
1616#if EV_USE_REALTIME 2519#if EV_USE_REALTIME
1617 if (!have_realtime) 2520 if (!have_realtime)
1618 { 2521 {
1619 struct timespec ts; 2522 struct timespec ts;
1620 2523
… …
1642 if (!(flags & EVFLAG_NOENV) 2545 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 2546 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 2547 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 2548 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 2549
1647 ev_rt_now = ev_time (); 2550 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 2551 mn_now = get_clock ();
1649 now_floor = mn_now; 2552 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 2553 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 2554#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 2555 invoke_cb = ev_invoke_pending;
1653#endif 2556#endif
1654 2557
1655 io_blocktime = 0.; 2558 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 2559 timeout_blocktime = 0.;
1657 backend = 0; 2560 backend = 0;
1658 backend_fd = -1; 2561 backend_fd = -1;
1659 sig_pending = 0; 2562 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 2563#if EV_ASYNC_ENABLE
1661 async_pending = 0; 2564 async_pending = 0;
1662#endif 2565#endif
2566 pipe_write_skipped = 0;
2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 2570#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 2572#endif
1666#if EV_USE_SIGNALFD 2573#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 2575#endif
1669 2576
1670 if (!(flags & 0x0000ffffU)) 2577 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 2578 flags |= ev_recommended_backends ();
1672 2579
2580#if EV_USE_IOCP
2581 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2582#endif
1673#if EV_USE_PORT 2583#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2584 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 2585#endif
1676#if EV_USE_KQUEUE 2586#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2587 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1694#endif 2604#endif
1695 } 2605 }
1696} 2606}
1697 2607
1698/* free up a loop structure */ 2608/* free up a loop structure */
1699static void noinline 2609void ecb_cold
1700loop_destroy (EV_P) 2610ev_loop_destroy (EV_P)
1701{ 2611{
1702 int i; 2612 int i;
2613
2614#if EV_MULTIPLICITY
2615 /* mimic free (0) */
2616 if (!EV_A)
2617 return;
2618#endif
2619
2620#if EV_CLEANUP_ENABLE
2621 /* queue cleanup watchers (and execute them) */
2622 if (expect_false (cleanupcnt))
2623 {
2624 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2625 EV_INVOKE_PENDING;
2626 }
2627#endif
2628
2629#if EV_CHILD_ENABLE
2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2631 {
2632 ev_ref (EV_A); /* child watcher */
2633 ev_signal_stop (EV_A_ &childev);
2634 }
2635#endif
1703 2636
1704 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1705 { 2638 {
1706 /*ev_ref (EV_A);*/ 2639 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 2641
1709#if EV_USE_EVENTFD
1710 if (evfd >= 0)
1711 close (evfd);
1712#endif
1713
1714 if (evpipe [0] >= 0)
1715 {
1716 EV_WIN32_CLOSE_FD (evpipe [0]); 2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 2644 }
1720 2645
1721#if EV_USE_SIGNALFD 2646#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 2647 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 2648 close (sigfd);
… …
1729#endif 2654#endif
1730 2655
1731 if (backend_fd >= 0) 2656 if (backend_fd >= 0)
1732 close (backend_fd); 2657 close (backend_fd);
1733 2658
2659#if EV_USE_IOCP
2660 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2661#endif
1734#if EV_USE_PORT 2662#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2663 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 2664#endif
1737#if EV_USE_KQUEUE 2665#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2666 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1765 array_free (periodic, EMPTY); 2693 array_free (periodic, EMPTY);
1766#endif 2694#endif
1767#if EV_FORK_ENABLE 2695#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 2696 array_free (fork, EMPTY);
1769#endif 2697#endif
2698#if EV_CLEANUP_ENABLE
2699 array_free (cleanup, EMPTY);
2700#endif
1770 array_free (prepare, EMPTY); 2701 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 2702 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 2703#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 2704 array_free (async, EMPTY);
1774#endif 2705#endif
1775 2706
1776 backend = 0; 2707 backend = 0;
2708
2709#if EV_MULTIPLICITY
2710 if (ev_is_default_loop (EV_A))
2711#endif
2712 ev_default_loop_ptr = 0;
2713#if EV_MULTIPLICITY
2714 else
2715 ev_free (EV_A);
2716#endif
1777} 2717}
1778 2718
1779#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 2720inline_size void infy_fork (EV_P);
1781#endif 2721#endif
… …
1794#endif 2734#endif
1795#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 2736 infy_fork (EV_A);
1797#endif 2737#endif
1798 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
1800 { 2741 {
1801 /* this "locks" the handlers against writing to the pipe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802 /* while we modify the fd vars */
1803 sig_pending = 1;
1804#if EV_ASYNC_ENABLE
1805 async_pending = 1;
1806#endif
1807 2743
1808 ev_ref (EV_A); 2744 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
1810 2746
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1820 }
1821 2749
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
1825 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1826#endif
1827 } 2753 }
2754#endif
1828 2755
1829 postfork = 0; 2756 postfork = 0;
1830} 2757}
1831 2758
1832#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
1833 2760
1834struct ev_loop * 2761struct ev_loop * ecb_cold
1835ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
1836{ 2763{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 2765
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
1841 2768
1842 if (ev_backend (EV_A)) 2769 if (ev_backend (EV_A))
1843 return EV_A; 2770 return EV_A;
1844 2771
2772 ev_free (EV_A);
1845 return 0; 2773 return 0;
1846} 2774}
1847 2775
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 2776#endif /* multiplicity */
1861 2777
1862#if EV_VERIFY 2778#if EV_VERIFY
1863static void noinline 2779static void noinline ecb_cold
1864verify_watcher (EV_P_ W w) 2780verify_watcher (EV_P_ W w)
1865{ 2781{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 2783
1868 if (w->pending) 2784 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 2786}
1871 2787
1872static void noinline 2788static void noinline ecb_cold
1873verify_heap (EV_P_ ANHE *heap, int N) 2789verify_heap (EV_P_ ANHE *heap, int N)
1874{ 2790{
1875 int i; 2791 int i;
1876 2792
1877 for (i = HEAP0; i < N + HEAP0; ++i) 2793 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 2798
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 2800 }
1885} 2801}
1886 2802
1887static void noinline 2803static void noinline ecb_cold
1888array_verify (EV_P_ W *ws, int cnt) 2804array_verify (EV_P_ W *ws, int cnt)
1889{ 2805{
1890 while (cnt--) 2806 while (cnt--)
1891 { 2807 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 2810 }
1895} 2811}
1896#endif 2812#endif
1897 2813
1898#if EV_FEATURE_API 2814#if EV_FEATURE_API
1899void 2815void ecb_cold
1900ev_verify (EV_P) 2816ev_verify (EV_P) EV_THROW
1901{ 2817{
1902#if EV_VERIFY 2818#if EV_VERIFY
1903 int i; 2819 int i;
1904 WL w; 2820 WL w, w2;
1905 2821
1906 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
1907 2823
1908 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 2827
1912 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
1914 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 2834 {
1916 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 2845 }
2846 }
1920 2847
1921 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
1923 2850
1924#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 2866#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 2867 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 2868 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 2869#endif
1943 2870
2871#if EV_CLEANUP_ENABLE
2872 assert (cleanupmax >= cleanupcnt);
2873 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2874#endif
2875
1944#if EV_ASYNC_ENABLE 2876#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 2877 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 2878 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 2879#endif
1948 2880
… …
1965#endif 2897#endif
1966} 2898}
1967#endif 2899#endif
1968 2900
1969#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
1970struct ev_loop * 2902struct ev_loop * ecb_cold
1971ev_default_loop_init (unsigned int flags)
1972#else 2903#else
1973int 2904int
2905#endif
1974ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
1975#endif
1976{ 2907{
1977 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
1978 { 2909 {
1979#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 2930
2000 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
2001} 2932}
2002 2933
2003void 2934void
2004ev_default_destroy (void) 2935ev_loop_fork (EV_P) EV_THROW
2005{ 2936{
2006#if EV_MULTIPLICITY 2937 postfork = 1;
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */
2028} 2938}
2029 2939
2030/*****************************************************************************/ 2940/*****************************************************************************/
2031 2941
2032void 2942void
… …
2034{ 2944{
2035 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
2036} 2946}
2037 2947
2038unsigned int 2948unsigned int
2039ev_pending_count (EV_P) 2949ev_pending_count (EV_P) EV_THROW
2040{ 2950{
2041 int pri; 2951 int pri;
2042 unsigned int count = 0; 2952 unsigned int count = 0;
2043 2953
2044 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
… …
2048} 2958}
2049 2959
2050void noinline 2960void noinline
2051ev_invoke_pending (EV_P) 2961ev_invoke_pending (EV_P)
2052{ 2962{
2053 int pri; 2963 pendingpri = NUMPRI;
2054 2964
2055 for (pri = NUMPRI; pri--; ) 2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
2056 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
2057 { 2970 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 2972
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062
2063 p->w->pending = 0; 2973 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
2066 } 2976 }
2977 }
2067} 2978}
2068 2979
2069#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3039 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3040 }
2130} 3041}
2131 3042
2132#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
3044
3045static void noinline
3046periodic_recalc (EV_P_ ev_periodic *w)
3047{
3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3050
3051 /* the above almost always errs on the low side */
3052 while (at <= ev_rt_now)
3053 {
3054 ev_tstamp nat = at + w->interval;
3055
3056 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at))
3058 {
3059 at = ev_rt_now;
3060 break;
3061 }
3062
3063 at = nat;
3064 }
3065
3066 ev_at (w) = at;
3067}
3068
2133/* make periodics pending */ 3069/* make periodics pending */
2134inline_size void 3070inline_size void
2135periodics_reify (EV_P) 3071periodics_reify (EV_P)
2136{ 3072{
2137 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2138 3074
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3076 {
2141 int feed_count = 0;
2142
2143 do 3077 do
2144 { 3078 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3080
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3090 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3091 downheap (periodics, periodiccnt, HEAP0);
2158 } 3092 }
2159 else if (w->interval) 3093 else if (w->interval)
2160 { 3094 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3095 periodic_recalc (EV_A_ w);
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]); 3096 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3097 downheap (periodics, periodiccnt, HEAP0);
2177 } 3098 }
2178 else 3099 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3100 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3108 }
2188} 3109}
2189 3110
2190/* simply recalculate all periodics */ 3111/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3112/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3113static void noinline ecb_cold
2193periodics_reschedule (EV_P) 3114periodics_reschedule (EV_P)
2194{ 3115{
2195 int i; 3116 int i;
2196 3117
2197 /* adjust periodics after time jump */ 3118 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3122
2202 if (w->reschedule_cb) 3123 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3124 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3125 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3126 periodic_recalc (EV_A_ w);
2206 3127
2207 ANHE_at_cache (periodics [i]); 3128 ANHE_at_cache (periodics [i]);
2208 } 3129 }
2209 3130
2210 reheap (periodics, periodiccnt); 3131 reheap (periodics, periodiccnt);
2211} 3132}
2212#endif 3133#endif
2213 3134
2214/* adjust all timers by a given offset */ 3135/* adjust all timers by a given offset */
2215static void noinline 3136static void noinline ecb_cold
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3137timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3138{
2218 int i; 3139 int i;
2219 3140
2220 for (i = 0; i < timercnt; ++i) 3141 for (i = 0; i < timercnt; ++i)
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3178 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3179 * in the unlikely event of having been preempted here.
2259 */ 3180 */
2260 for (i = 4; --i; ) 3181 for (i = 4; --i; )
2261 { 3182 {
3183 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3184 rtmn_diff = ev_rt_now - mn_now;
2263 3185
3186 diff = odiff - rtmn_diff;
3187
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265 return; /* all is well */ 3189 return; /* all is well */
2266 3190
2267 ev_rt_now = ev_time (); 3191 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3192 mn_now = get_clock ();
2269 now_floor = mn_now; 3193 now_floor = mn_now;
… …
2291 3215
2292 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2293 } 3217 }
2294} 3218}
2295 3219
2296void 3220int
2297ev_loop (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2298{ 3222{
2299#if EV_FEATURE_API 3223#if EV_FEATURE_API
2300 ++loop_depth; 3224 ++loop_depth;
2301#endif 3225#endif
2302 3226
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3227 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 3228
2305 loop_done = EVUNLOOP_CANCEL; 3229 loop_done = EVBREAK_CANCEL;
2306 3230
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3231 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 3232
2309 do 3233 do
2310 { 3234 {
… …
2353 /* calculate blocking time */ 3277 /* calculate blocking time */
2354 { 3278 {
2355 ev_tstamp waittime = 0.; 3279 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 3280 ev_tstamp sleeptime = 0.;
2357 3281
3282 /* remember old timestamp for io_blocktime calculation */
3283 ev_tstamp prev_mn_now = mn_now;
3284
3285 /* update time to cancel out callback processing overhead */
3286 time_update (EV_A_ 1e100);
3287
3288 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1;
3290
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2359 { 3294 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
2363 /* update time to cancel out callback processing overhead */
2364 time_update (EV_A_ 1e100);
2365
2366 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2367 3296
2368 if (timercnt) 3297 if (timercnt)
2369 { 3298 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3300 if (waittime > to) waittime = to;
2372 } 3301 }
2373 3302
2374#if EV_PERIODIC_ENABLE 3303#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3304 if (periodiccnt)
2376 { 3305 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3306 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3307 if (waittime > to) waittime = to;
2379 } 3308 }
2380#endif 3309#endif
2381 3310
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3311 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3312 if (expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3313 waittime = timeout_blocktime;
3314
3315 /* at this point, we NEED to wait, so we have to ensure */
3316 /* to pass a minimum nonzero value to the backend */
3317 if (expect_false (waittime < backend_mintime))
3318 waittime = backend_mintime;
2385 3319
2386 /* extra check because io_blocktime is commonly 0 */ 3320 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3321 if (expect_false (io_blocktime))
2388 { 3322 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3323 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 3324
2391 if (sleeptime > waittime - backend_fudge) 3325 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 3326 sleeptime = waittime - backend_mintime;
2393 3327
2394 if (expect_true (sleeptime > 0.)) 3328 if (expect_true (sleeptime > 0.))
2395 { 3329 {
2396 ev_sleep (sleeptime); 3330 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 3331 waittime -= sleeptime;
… …
2400 } 3334 }
2401 3335
2402#if EV_FEATURE_API 3336#if EV_FEATURE_API
2403 ++loop_count; 3337 ++loop_count;
2404#endif 3338#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3342
3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
3346 if (pipe_write_skipped)
3347 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 }
3351
2408 3352
2409 /* update ev_rt_now, do magic */ 3353 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 3354 time_update (EV_A_ waittime + sleeptime);
2411 } 3355 }
2412 3356
… …
2430 EV_INVOKE_PENDING; 3374 EV_INVOKE_PENDING;
2431 } 3375 }
2432 while (expect_true ( 3376 while (expect_true (
2433 activecnt 3377 activecnt
2434 && !loop_done 3378 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3379 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 3380 ));
2437 3381
2438 if (loop_done == EVUNLOOP_ONE) 3382 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
2440 3384
2441#if EV_FEATURE_API 3385#if EV_FEATURE_API
2442 --loop_depth; 3386 --loop_depth;
2443#endif 3387#endif
3388
3389 return activecnt;
2444} 3390}
2445 3391
2446void 3392void
2447ev_unloop (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2448{ 3394{
2449 loop_done = how; 3395 loop_done = how;
2450} 3396}
2451 3397
2452void 3398void
2453ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2454{ 3400{
2455 ++activecnt; 3401 ++activecnt;
2456} 3402}
2457 3403
2458void 3404void
2459ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2460{ 3406{
2461 --activecnt; 3407 --activecnt;
2462} 3408}
2463 3409
2464void 3410void
2465ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2466{ 3412{
2467 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2468} 3414}
2469 3415
2470void 3416void
2471ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2472{ 3418{
2473 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2474} 3420}
2475 3421
2476void 3422void
2477ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2478{ 3424{
2479 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2480 3426
2481 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2521 w->pending = 0; 3467 w->pending = 0;
2522 } 3468 }
2523} 3469}
2524 3470
2525int 3471int
2526ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2527{ 3473{
2528 W w_ = (W)w; 3474 W w_ = (W)w;
2529 int pending = w_->pending; 3475 int pending = w_->pending;
2530 3476
2531 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2564} 3510}
2565 3511
2566/*****************************************************************************/ 3512/*****************************************************************************/
2567 3513
2568void noinline 3514void noinline
2569ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2570{ 3516{
2571 int fd = w->fd; 3517 int fd = w->fd;
2572 3518
2573 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2574 return; 3520 return;
… …
2580 3526
2581 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2583 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2584 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2587 3536
2588 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2589} 3538}
2590 3539
2591void noinline 3540void noinline
2592ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2593{ 3542{
2594 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2596 return; 3545 return;
2597 3546
… …
2606 3555
2607 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2608} 3557}
2609 3558
2610void noinline 3559void noinline
2611ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2612{ 3561{
2613 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2614 return; 3563 return;
2615 3564
2616 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2630 3579
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 3581}
2633 3582
2634void noinline 3583void noinline
2635ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2636{ 3585{
2637 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2639 return; 3588 return;
2640 3589
… …
2660 3609
2661 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2662} 3611}
2663 3612
2664void noinline 3613void noinline
2665ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2666{ 3615{
2667 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2668 3619
2669 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2670 { 3621 {
2671 if (w->repeat) 3622 if (w->repeat)
2672 { 3623 {
… …
2685 3636
2686 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2687} 3638}
2688 3639
2689ev_tstamp 3640ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2691{ 3642{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693} 3644}
2694 3645
2695#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2696void noinline 3647void noinline
2697ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2698{ 3649{
2699 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2700 return; 3651 return;
2701 3652
2702 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 3655 else if (w->interval)
2705 { 3656 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3657 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 3658 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 3659 }
2710 else 3660 else
2711 ev_at (w) = w->offset; 3661 ev_at (w) = w->offset;
2712 3662
2713 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
… …
2723 3673
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 3675}
2726 3676
2727void noinline 3677void noinline
2728ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2729{ 3679{
2730 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
2732 return; 3682 return;
2733 3683
… …
2751 3701
2752 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2753} 3703}
2754 3704
2755void noinline 3705void noinline
2756ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2757{ 3707{
2758 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
2761} 3711}
… …
2766#endif 3716#endif
2767 3717
2768#if EV_SIGNAL_ENABLE 3718#if EV_SIGNAL_ENABLE
2769 3719
2770void noinline 3720void noinline
2771ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2772{ 3722{
2773 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
2774 return; 3724 return;
2775 3725
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2778#if EV_MULTIPLICITY 3728#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 3729 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 3731
2782 signals [w->signum - 1].loop = EV_A; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
2783#endif 3734#endif
2784 3735
2785 EV_FREQUENT_CHECK; 3736 EV_FREQUENT_CHECK;
2786 3737
2787#if EV_USE_SIGNALFD 3738#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 3785 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 3786 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3787 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 3788 sigaction (w->signum, &sa, 0);
2838 3789
3790 if (origflags & EVFLAG_NOSIGMASK)
3791 {
2839 sigemptyset (&sa.sa_mask); 3792 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 3793 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3794 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3795 }
2842#endif 3796#endif
2843 } 3797 }
2844 3798
2845 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
2846} 3800}
2847 3801
2848void noinline 3802void noinline
2849ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2850{ 3804{
2851 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
2853 return; 3807 return;
2854 3808
… …
2885#endif 3839#endif
2886 3840
2887#if EV_CHILD_ENABLE 3841#if EV_CHILD_ENABLE
2888 3842
2889void 3843void
2890ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
2891{ 3845{
2892#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 3848#endif
2895 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
… …
2902 3856
2903 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
2904} 3858}
2905 3859
2906void 3860void
2907ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
2908{ 3862{
2909 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
2911 return; 3865 return;
2912 3866
… …
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 3894
2941static void noinline 3895static void noinline
2942infy_add (EV_P_ ev_stat *w) 3896infy_add (EV_P_ ev_stat *w)
2943{ 3897{
2944 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); 3898 w->wd = inotify_add_watch (fs_fd, w->path,
3899 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3900 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3901 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 3902
2946 if (w->wd >= 0) 3903 if (w->wd >= 0)
2947 { 3904 {
2948 struct statfs sfs; 3905 struct statfs sfs;
2949 3906
… …
2953 3910
2954 if (!fs_2625) 3911 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3912 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 3913 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 3914 && (sfs.f_type == 0x1373 /* devfs */
3915 || sfs.f_type == 0x4006 /* fat */
3916 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 3917 || sfs.f_type == 0xEF53 /* ext2/3 */
3918 || sfs.f_type == 0x72b6 /* jffs2 */
3919 || sfs.f_type == 0x858458f6 /* ramfs */
3920 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 3921 || sfs.f_type == 0x3153464a /* jfs */
3922 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 3923 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 3924 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 3925 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3926 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 3927 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3928 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 3929 }
… …
2987 if (!pend || pend == path) 3950 if (!pend || pend == path)
2988 break; 3951 break;
2989 3952
2990 *pend = 0; 3953 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 3954 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 3955 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3956 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 3957 }
2995 } 3958 }
2996 3959
2997 if (w->wd >= 0) 3960 if (w->wd >= 0)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4028 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4029 }
3067} 4030}
3068 4031
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void 4032inline_size void ecb_cold
3102ev_check_2625 (EV_P) 4033ev_check_2625 (EV_P)
3103{ 4034{
3104 /* kernels < 2.6.25 are borked 4035 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4036 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4037 */
… …
3111} 4042}
3112 4043
3113inline_size int 4044inline_size int
3114infy_newfd (void) 4045infy_newfd (void)
3115{ 4046{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4047#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4048 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4049 if (fd >= 0)
3119 return fd; 4050 return fd;
3120#endif 4051#endif
3121 return inotify_init (); 4052 return inotify_init ();
… …
3196#else 4127#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4128# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4129#endif
3199 4130
3200void 4131void
3201ev_stat_stat (EV_P_ ev_stat *w) 4132ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3202{ 4133{
3203 if (lstat (w->path, &w->attr) < 0) 4134 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4135 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4136 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4137 w->attr.st_nlink = 1;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4176 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4177 }
3247} 4178}
3248 4179
3249void 4180void
3250ev_stat_start (EV_P_ ev_stat *w) 4181ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3251{ 4182{
3252 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3253 return; 4184 return;
3254 4185
3255 ev_stat_stat (EV_A_ w); 4186 ev_stat_stat (EV_A_ w);
… …
3276 4207
3277 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3278} 4209}
3279 4210
3280void 4211void
3281ev_stat_stop (EV_P_ ev_stat *w) 4212ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3282{ 4213{
3283 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
3285 return; 4216 return;
3286 4217
… …
3302} 4233}
3303#endif 4234#endif
3304 4235
3305#if EV_IDLE_ENABLE 4236#if EV_IDLE_ENABLE
3306void 4237void
3307ev_idle_start (EV_P_ ev_idle *w) 4238ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3308{ 4239{
3309 if (expect_false (ev_is_active (w))) 4240 if (expect_false (ev_is_active (w)))
3310 return; 4241 return;
3311 4242
3312 pri_adjust (EV_A_ (W)w); 4243 pri_adjust (EV_A_ (W)w);
… …
3325 4256
3326 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3327} 4258}
3328 4259
3329void 4260void
3330ev_idle_stop (EV_P_ ev_idle *w) 4261ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3331{ 4262{
3332 clear_pending (EV_A_ (W)w); 4263 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4264 if (expect_false (!ev_is_active (w)))
3334 return; 4265 return;
3335 4266
… …
3349} 4280}
3350#endif 4281#endif
3351 4282
3352#if EV_PREPARE_ENABLE 4283#if EV_PREPARE_ENABLE
3353void 4284void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4285ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3355{ 4286{
3356 if (expect_false (ev_is_active (w))) 4287 if (expect_false (ev_is_active (w)))
3357 return; 4288 return;
3358 4289
3359 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
… …
3364 4295
3365 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3366} 4297}
3367 4298
3368void 4299void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4300ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3370{ 4301{
3371 clear_pending (EV_A_ (W)w); 4302 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4303 if (expect_false (!ev_is_active (w)))
3373 return; 4304 return;
3374 4305
… …
3387} 4318}
3388#endif 4319#endif
3389 4320
3390#if EV_CHECK_ENABLE 4321#if EV_CHECK_ENABLE
3391void 4322void
3392ev_check_start (EV_P_ ev_check *w) 4323ev_check_start (EV_P_ ev_check *w) EV_THROW
3393{ 4324{
3394 if (expect_false (ev_is_active (w))) 4325 if (expect_false (ev_is_active (w)))
3395 return; 4326 return;
3396 4327
3397 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
… …
3402 4333
3403 EV_FREQUENT_CHECK; 4334 EV_FREQUENT_CHECK;
3404} 4335}
3405 4336
3406void 4337void
3407ev_check_stop (EV_P_ ev_check *w) 4338ev_check_stop (EV_P_ ev_check *w) EV_THROW
3408{ 4339{
3409 clear_pending (EV_A_ (W)w); 4340 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4341 if (expect_false (!ev_is_active (w)))
3411 return; 4342 return;
3412 4343
… …
3425} 4356}
3426#endif 4357#endif
3427 4358
3428#if EV_EMBED_ENABLE 4359#if EV_EMBED_ENABLE
3429void noinline 4360void noinline
3430ev_embed_sweep (EV_P_ ev_embed *w) 4361ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3431{ 4362{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 4363 ev_run (w->other, EVRUN_NOWAIT);
3433} 4364}
3434 4365
3435static void 4366static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 4367embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 4368{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4369 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 4370
3440 if (ev_cb (w)) 4371 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4372 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 4373 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 4374 ev_run (w->other, EVRUN_NOWAIT);
3444} 4375}
3445 4376
3446static void 4377static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4378embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 4379{
… …
3452 EV_P = w->other; 4383 EV_P = w->other;
3453 4384
3454 while (fdchangecnt) 4385 while (fdchangecnt)
3455 { 4386 {
3456 fd_reify (EV_A); 4387 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4388 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 4389 }
3459 } 4390 }
3460} 4391}
3461 4392
3462static void 4393static void
… …
3468 4399
3469 { 4400 {
3470 EV_P = w->other; 4401 EV_P = w->other;
3471 4402
3472 ev_loop_fork (EV_A); 4403 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4404 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 4405 }
3475 4406
3476 ev_embed_start (EV_A_ w); 4407 ev_embed_start (EV_A_ w);
3477} 4408}
3478 4409
… …
3483 ev_idle_stop (EV_A_ idle); 4414 ev_idle_stop (EV_A_ idle);
3484} 4415}
3485#endif 4416#endif
3486 4417
3487void 4418void
3488ev_embed_start (EV_P_ ev_embed *w) 4419ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3489{ 4420{
3490 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3491 return; 4422 return;
3492 4423
3493 { 4424 {
… …
3514 4445
3515 EV_FREQUENT_CHECK; 4446 EV_FREQUENT_CHECK;
3516} 4447}
3517 4448
3518void 4449void
3519ev_embed_stop (EV_P_ ev_embed *w) 4450ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3520{ 4451{
3521 clear_pending (EV_A_ (W)w); 4452 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4453 if (expect_false (!ev_is_active (w)))
3523 return; 4454 return;
3524 4455
… …
3534} 4465}
3535#endif 4466#endif
3536 4467
3537#if EV_FORK_ENABLE 4468#if EV_FORK_ENABLE
3538void 4469void
3539ev_fork_start (EV_P_ ev_fork *w) 4470ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3540{ 4471{
3541 if (expect_false (ev_is_active (w))) 4472 if (expect_false (ev_is_active (w)))
3542 return; 4473 return;
3543 4474
3544 EV_FREQUENT_CHECK; 4475 EV_FREQUENT_CHECK;
… …
3549 4480
3550 EV_FREQUENT_CHECK; 4481 EV_FREQUENT_CHECK;
3551} 4482}
3552 4483
3553void 4484void
3554ev_fork_stop (EV_P_ ev_fork *w) 4485ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3555{ 4486{
3556 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4488 if (expect_false (!ev_is_active (w)))
3558 return; 4489 return;
3559 4490
… …
3570 4501
3571 EV_FREQUENT_CHECK; 4502 EV_FREQUENT_CHECK;
3572} 4503}
3573#endif 4504#endif
3574 4505
4506#if EV_CLEANUP_ENABLE
4507void
4508ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4509{
4510 if (expect_false (ev_is_active (w)))
4511 return;
4512
4513 EV_FREQUENT_CHECK;
4514
4515 ev_start (EV_A_ (W)w, ++cleanupcnt);
4516 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4517 cleanups [cleanupcnt - 1] = w;
4518
4519 /* cleanup watchers should never keep a refcount on the loop */
4520 ev_unref (EV_A);
4521 EV_FREQUENT_CHECK;
4522}
4523
4524void
4525ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4526{
4527 clear_pending (EV_A_ (W)w);
4528 if (expect_false (!ev_is_active (w)))
4529 return;
4530
4531 EV_FREQUENT_CHECK;
4532 ev_ref (EV_A);
4533
4534 {
4535 int active = ev_active (w);
4536
4537 cleanups [active - 1] = cleanups [--cleanupcnt];
4538 ev_active (cleanups [active - 1]) = active;
4539 }
4540
4541 ev_stop (EV_A_ (W)w);
4542
4543 EV_FREQUENT_CHECK;
4544}
4545#endif
4546
3575#if EV_ASYNC_ENABLE 4547#if EV_ASYNC_ENABLE
3576void 4548void
3577ev_async_start (EV_P_ ev_async *w) 4549ev_async_start (EV_P_ ev_async *w) EV_THROW
3578{ 4550{
3579 if (expect_false (ev_is_active (w))) 4551 if (expect_false (ev_is_active (w)))
3580 return; 4552 return;
3581 4553
3582 w->sent = 0; 4554 w->sent = 0;
… …
3591 4563
3592 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
3593} 4565}
3594 4566
3595void 4567void
3596ev_async_stop (EV_P_ ev_async *w) 4568ev_async_stop (EV_P_ ev_async *w) EV_THROW
3597{ 4569{
3598 clear_pending (EV_A_ (W)w); 4570 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4571 if (expect_false (!ev_is_active (w)))
3600 return; 4572 return;
3601 4573
… …
3612 4584
3613 EV_FREQUENT_CHECK; 4585 EV_FREQUENT_CHECK;
3614} 4586}
3615 4587
3616void 4588void
3617ev_async_send (EV_P_ ev_async *w) 4589ev_async_send (EV_P_ ev_async *w) EV_THROW
3618{ 4590{
3619 w->sent = 1; 4591 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 4592 evpipe_write (EV_A_ &async_pending);
3621} 4593}
3622#endif 4594#endif
… …
3659 4631
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4632 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 4633}
3662 4634
3663void 4635void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4636ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3665{ 4637{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4638 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3667 4639
3668 if (expect_false (!once)) 4640 if (expect_false (!once))
3669 { 4641 {
… …
3690} 4662}
3691 4663
3692/*****************************************************************************/ 4664/*****************************************************************************/
3693 4665
3694#if EV_WALK_ENABLE 4666#if EV_WALK_ENABLE
3695void 4667void ecb_cold
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4668ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3697{ 4669{
3698 int i, j; 4670 int i, j;
3699 ev_watcher_list *wl, *wn; 4671 ev_watcher_list *wl, *wn;
3700 4672
3701 if (types & (EV_IO | EV_EMBED)) 4673 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4716 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 4717#endif
3746 4718
3747#if EV_IDLE_ENABLE 4719#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 4720 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 4721 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 4722 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 4723 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 4724#endif
3753 4725
3754#if EV_FORK_ENABLE 4726#if EV_FORK_ENABLE
… …
3807 4779
3808#if EV_MULTIPLICITY 4780#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 4781 #include "ev_wrap.h"
3810#endif 4782#endif
3811 4783
3812#ifdef __cplusplus
3813}
3814#endif
3815

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