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Comparing libev/ev.c (file contents):
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* 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 */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
234# define EV_NSIG 65 249# define EV_NSIG 65
235#endif 250#endif
236 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
237#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 259# else
241# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
242# endif 261# endif
243#endif 262#endif
244 263
245#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 267# else
249# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
250# endif 269# endif
251#endif 270#endif
… …
338 357
339#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 360#endif
342 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 381# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
351# else 386# else
… …
354# endif 389# endif
355#endif 390#endif
356 391
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 393
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
368#endif 397#endif
369 398
… …
376# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
378#endif 407#endif
379 408
380#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 412# include <sys/select.h>
383# endif 413# endif
384#endif 414#endif
385 415
386#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h> 417# include <sys/statfs.h>
389# include <sys/inotify.h> 418# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
394# endif 423# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 424#endif
400 425
401#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 428# include <stdint.h>
… …
443#else 468#else
444# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
445#endif 470#endif
446 471
447/* 472/*
448 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 475 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 478
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 481
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 529 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
465# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
466#else 545#else
467# define expect(expr,value) (expr) 546 #include <inttypes.h>
468# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
470# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
471# endif 552#endif
553
554/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
472#endif 566 #endif
567#endif
473 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
476#define inline_size static inline 1224#define inline_size ecb_inline
477 1225
478#if EV_FEATURE_CODE 1226#if EV_FEATURE_CODE
479# define inline_speed static inline 1227# define inline_speed ecb_inline
480#else 1228#else
481# define inline_speed static noinline 1229# define inline_speed static noinline
482#endif 1230#endif
483 1231
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1271# include "ev_win32.c"
524#endif 1272#endif
525 1273
526/*****************************************************************************/ 1274/*****************************************************************************/
527 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
528#if EV_AVOID_STDIO 1366#if EV_AVOID_STDIO
529static void noinline 1367static void noinline ecb_cold
530ev_printerr (const char *msg) 1368ev_printerr (const char *msg)
531{ 1369{
532 write (STDERR_FILENO, msg, strlen (msg)); 1370 write (STDERR_FILENO, msg, strlen (msg));
533} 1371}
534#endif 1372#endif
535 1373
536static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
537 1375
538void 1376void ecb_cold
539ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
540{ 1378{
541 syserr_cb = cb; 1379 syserr_cb = cb;
542} 1380}
543 1381
544static void noinline 1382static void noinline ecb_cold
545ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
546{ 1384{
547 if (!msg) 1385 if (!msg)
548 msg = "(libev) system error"; 1386 msg = "(libev) system error";
549 1387
550 if (syserr_cb) 1388 if (syserr_cb)
551 syserr_cb (msg); 1389 syserr_cb (msg);
552 else 1390 else
553 { 1391 {
554#if EV_AVOID_STDIO 1392#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg); 1393 ev_printerr (msg);
558 ev_printerr (": "); 1394 ev_printerr (": ");
559 ev_printerr (err); 1395 ev_printerr (strerror (errno));
560 ev_printerr ("\n"); 1396 ev_printerr ("\n");
561#else 1397#else
562 perror (msg); 1398 perror (msg);
563#endif 1399#endif
564 abort (); 1400 abort ();
565 } 1401 }
566} 1402}
567 1403
568static void * 1404static void *
569ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
570{ 1406{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
574 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
575 * implement realloc (x, 0) (as required by both ansi c-89 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
576 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
577 */ 1412 */
578 1413
579 if (size) 1414 if (size)
580 return realloc (ptr, size); 1415 return realloc (ptr, size);
581 1416
582 free (ptr); 1417 free (ptr);
583 return 0; 1418 return 0;
584#endif
585} 1419}
586 1420
587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
588 1422
589void 1423void ecb_cold
590ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
591{ 1425{
592 alloc = cb; 1426 alloc = cb;
593} 1427}
594 1428
595inline_speed void * 1429inline_speed void *
… …
598 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
599 1433
600 if (!ptr && size) 1434 if (!ptr && size)
601 { 1435 {
602#if EV_AVOID_STDIO 1436#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
604#else 1438#else
605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
606#endif 1440#endif
607 abort (); 1441 abort ();
608 } 1442 }
609 1443
610 return ptr; 1444 return ptr;
… …
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
628 unsigned char unused; 1462 unsigned char unused;
629#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif 1465#endif
632#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
633 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
634#endif 1471#endif
635} ANFD; 1472} ANFD;
636 1473
637/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
638typedef struct 1475typedef struct
… …
680 #undef VAR 1517 #undef VAR
681 }; 1518 };
682 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
683 1520
684 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
685 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
686 1523
687#else 1524#else
688 1525
689 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
690 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
691 #include "ev_vars.h" 1528 #include "ev_vars.h"
692 #undef VAR 1529 #undef VAR
693 1530
694 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
… …
709 1546
710/*****************************************************************************/ 1547/*****************************************************************************/
711 1548
712#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
713ev_tstamp 1550ev_tstamp
714ev_time (void) 1551ev_time (void) EV_THROW
715{ 1552{
716#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
717 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
718 { 1555 {
719 struct timespec ts; 1556 struct timespec ts;
… …
743 return ev_time (); 1580 return ev_time ();
744} 1581}
745 1582
746#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
747ev_tstamp 1584ev_tstamp
748ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
749{ 1586{
750 return ev_rt_now; 1587 return ev_rt_now;
751} 1588}
752#endif 1589#endif
753 1590
754void 1591void
755ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
756{ 1593{
757 if (delay > 0.) 1594 if (delay > 0.)
758 { 1595 {
759#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
760 struct timespec ts; 1597 struct timespec ts;
761 1598
762 EV_TS_SET (ts, delay); 1599 EV_TS_SET (ts, delay);
763 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
764#elif defined(_WIN32) 1601#elif defined _WIN32
765 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
766#else 1603#else
767 struct timeval tv; 1604 struct timeval tv;
768 1605
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
788 1625
789 do 1626 do
790 ncur <<= 1; 1627 ncur <<= 1;
791 while (cnt > ncur); 1628 while (cnt > ncur);
792 1629
793 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
794 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
795 { 1632 {
796 ncur *= elem; 1633 ncur *= elem;
797 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
798 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
800 } 1637 }
801 1638
802 return ncur; 1639 return ncur;
803} 1640}
804 1641
805static noinline void * 1642static void * noinline ecb_cold
806array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
807{ 1644{
808 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
809 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
810} 1647}
… …
813 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
814 1651
815#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
816 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
817 { \ 1654 { \
818 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
819 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
820 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
821 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
822 } 1659 }
823 1660
… …
841pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
842{ 1679{
843} 1680}
844 1681
845void noinline 1682void noinline
846ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
847{ 1684{
848 W w_ = (W)w; 1685 W w_ = (W)w;
849 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
850 1687
851 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
855 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
856 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
857 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
858 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
859 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
860} 1699}
861 1700
862inline_speed void 1701inline_speed void
863feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
864{ 1703{
… …
910 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
912} 1751}
913 1752
914void 1753void
915ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
916{ 1755{
917 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
918 fd_event_nocheck (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
919} 1758}
920 1759
… …
923inline_size void 1762inline_size void
924fd_reify (EV_P) 1763fd_reify (EV_P)
925{ 1764{
926 int i; 1765 int i;
927 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
928 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
929 { 1793 {
930 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
931 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
932 ev_io *w; 1796 ev_io *w;
… …
934 unsigned char o_events = anfd->events; 1798 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify; 1799 unsigned char o_reify = anfd->reify;
936 1800
937 anfd->reify = 0; 1801 anfd->reify = 0;
938 1802
939#if EV_SELECT_IS_WINSOCKET
940 if (o_reify & EV__IOFDSET)
941 {
942 unsigned long arg;
943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
945 }
946#endif
947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
949 { 1804 {
950 anfd->events = 0; 1805 anfd->events = 0;
951 1806
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
977 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
978 } 1833 }
979} 1834}
980 1835
981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void 1837inline_speed void ecb_cold
983fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
984{ 1839{
985 ev_io *w; 1840 ev_io *w;
986 1841
987 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
991 } 1846 }
992} 1847}
993 1848
994/* check whether the given fd is actually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
995inline_size int 1850inline_size int ecb_cold
996fd_valid (int fd) 1851fd_valid (int fd)
997{ 1852{
998#ifdef _WIN32 1853#ifdef _WIN32
999 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1000#else 1855#else
1001 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
1002#endif 1857#endif
1003} 1858}
1004 1859
1005/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
1006static void noinline 1861static void noinline ecb_cold
1007fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
1008{ 1863{
1009 int fd; 1864 int fd;
1010 1865
1011 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
1013 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
1014 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
1015} 1870}
1016 1871
1017/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
1018static void noinline 1873static void noinline ecb_cold
1019fd_enomem (EV_P) 1874fd_enomem (EV_P)
1020{ 1875{
1021 int fd; 1876 int fd;
1022 1877
1023 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
… …
1218 2073
1219/*****************************************************************************/ 2074/*****************************************************************************/
1220 2075
1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1222 2077
1223static void noinline 2078static void noinline ecb_cold
1224evpipe_init (EV_P) 2079evpipe_init (EV_P)
1225{ 2080{
1226 if (!ev_is_active (&pipe_w)) 2081 if (!ev_is_active (&pipe_w))
1227 { 2082 {
2083 int fds [2];
2084
1228# if EV_USE_EVENTFD 2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL) 2088 if (fds [1] < 0 && errno == EINVAL)
1231 evfd = eventfd (0, 0); 2089 fds [1] = eventfd (0, 0);
1232 2090
1233 if (evfd >= 0) 2091 if (fds [1] < 0)
2092# endif
1234 { 2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
1235 evpipe [0] = -1; 2102 evpipe [0] = fds [0];
1236 fd_intern (evfd); /* doing it twice doesn't hurt */ 2103
1237 ev_io_set (&pipe_w, evfd, EV_READ); 2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
2123inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{
2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2127
2128 if (expect_true (*flag))
2129 return;
2130
2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
2147#if EV_USE_EVENTFD
2148 if (evpipe [0] < 0)
2149 {
2150 uint64_t counter = 1;
2151 write (evpipe [1], &counter, sizeof (uint64_t));
1238 } 2152 }
1239 else 2153 else
1240# endif 2154#endif
1241 { 2155 {
1242 while (pipe (evpipe)) 2156#ifdef _WIN32
1243 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1244 2158 DWORD sent;
1245 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1246 fd_intern (evpipe [1]); 2160 buf.len = 1;
1247 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1248 } 2165 }
1249
1250 ev_io_start (EV_A_ &pipe_w);
1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1252 }
1253}
1254
1255inline_size void
1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1257{
1258 if (!*flag)
1259 {
1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1262
1263 *flag = 1;
1264
1265#if EV_USE_EVENTFD
1266 if (evfd >= 0)
1267 {
1268 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t));
1270 }
1271 else
1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1);
1279 2166
1280 errno = old_errno; 2167 errno = old_errno;
1281 } 2168 }
1282} 2169}
1283 2170
… …
1286static void 2173static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2175{
1289 int i; 2176 int i;
1290 2177
2178 if (revents & EV_READ)
2179 {
1291#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1293 { 2182 {
1294 uint64_t counter; 2183 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2185 }
1297 else 2186 else
1298#endif 2187#endif
1299 { 2188 {
1300 char dummy; 2189 char dummy[4];
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1302 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
1303 } 2201 }
1304 2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
1305 if (sig_pending) 2208 if (sig_pending)
1306 { 2209 {
1307 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1308 2213
1309 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1310 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1311 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1312 } 2217 }
2218#endif
1313 2219
1314#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1315 if (async_pending) 2221 if (async_pending)
1316 { 2222 {
1317 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1318 2226
1319 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1320 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1321 { 2229 {
1322 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1323 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1324 } 2233 }
1325 } 2234 }
1326#endif 2235#endif
1327} 2236}
1328 2237
1329/*****************************************************************************/ 2238/*****************************************************************************/
1330 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE;
2246 EV_A = signals [signum - 1].loop;
2247
2248 if (!EV_A)
2249 return;
2250#endif
2251
2252 signals [signum - 1].pending = 1;
2253 evpipe_write (EV_A_ &sig_pending);
2254}
2255
1331static void 2256static void
1332ev_sighandler (int signum) 2257ev_sighandler (int signum)
1333{ 2258{
1334#if EV_MULTIPLICITY
1335 EV_P = signals [signum - 1].loop;
1336#endif
1337
1338#ifdef _WIN32 2259#ifdef _WIN32
1339 signal (signum, ev_sighandler); 2260 signal (signum, ev_sighandler);
1340#endif 2261#endif
1341 2262
1342 signals [signum - 1].pending = 1; 2263 ev_feed_signal (signum);
1343 evpipe_write (EV_A_ &sig_pending);
1344} 2264}
1345 2265
1346void noinline 2266void noinline
1347ev_feed_signal_event (EV_P_ int signum) 2267ev_feed_signal_event (EV_P_ int signum) EV_THROW
1348{ 2268{
1349 WL w; 2269 WL w;
1350 2270
1351 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2271 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1352 return; 2272 return;
1353 2273
1354 --signum; 2274 --signum;
1355 2275
1356#if EV_MULTIPLICITY 2276#if EV_MULTIPLICITY
… …
1360 if (expect_false (signals [signum].loop != EV_A)) 2280 if (expect_false (signals [signum].loop != EV_A))
1361 return; 2281 return;
1362#endif 2282#endif
1363 2283
1364 signals [signum].pending = 0; 2284 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1365 2286
1366 for (w = signals [signum].head; w; w = w->next) 2287 for (w = signals [signum].head; w; w = w->next)
1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2288 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1368} 2289}
1369 2290
… …
1448 2369
1449#endif 2370#endif
1450 2371
1451/*****************************************************************************/ 2372/*****************************************************************************/
1452 2373
2374#if EV_USE_IOCP
2375# include "ev_iocp.c"
2376#endif
1453#if EV_USE_PORT 2377#if EV_USE_PORT
1454# include "ev_port.c" 2378# include "ev_port.c"
1455#endif 2379#endif
1456#if EV_USE_KQUEUE 2380#if EV_USE_KQUEUE
1457# include "ev_kqueue.c" 2381# include "ev_kqueue.c"
… …
1464#endif 2388#endif
1465#if EV_USE_SELECT 2389#if EV_USE_SELECT
1466# include "ev_select.c" 2390# include "ev_select.c"
1467#endif 2391#endif
1468 2392
1469int 2393int ecb_cold
1470ev_version_major (void) 2394ev_version_major (void) EV_THROW
1471{ 2395{
1472 return EV_VERSION_MAJOR; 2396 return EV_VERSION_MAJOR;
1473} 2397}
1474 2398
1475int 2399int ecb_cold
1476ev_version_minor (void) 2400ev_version_minor (void) EV_THROW
1477{ 2401{
1478 return EV_VERSION_MINOR; 2402 return EV_VERSION_MINOR;
1479} 2403}
1480 2404
1481/* return true if we are running with elevated privileges and should ignore env variables */ 2405/* return true if we are running with elevated privileges and should ignore env variables */
1482int inline_size 2406int inline_size ecb_cold
1483enable_secure (void) 2407enable_secure (void)
1484{ 2408{
1485#ifdef _WIN32 2409#ifdef _WIN32
1486 return 0; 2410 return 0;
1487#else 2411#else
1488 return getuid () != geteuid () 2412 return getuid () != geteuid ()
1489 || getgid () != getegid (); 2413 || getgid () != getegid ();
1490#endif 2414#endif
1491} 2415}
1492 2416
1493unsigned int 2417unsigned int ecb_cold
1494ev_supported_backends (void) 2418ev_supported_backends (void) EV_THROW
1495{ 2419{
1496 unsigned int flags = 0; 2420 unsigned int flags = 0;
1497 2421
1498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2426 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1503 2427
1504 return flags; 2428 return flags;
1505} 2429}
1506 2430
1507unsigned int 2431unsigned int ecb_cold
1508ev_recommended_backends (void) 2432ev_recommended_backends (void) EV_THROW
1509{ 2433{
1510 unsigned int flags = ev_supported_backends (); 2434 unsigned int flags = ev_supported_backends ();
1511 2435
1512#ifndef __NetBSD__ 2436#ifndef __NetBSD__
1513 /* kqueue is borked on everything but netbsd apparently */ 2437 /* kqueue is borked on everything but netbsd apparently */
… …
1524#endif 2448#endif
1525 2449
1526 return flags; 2450 return flags;
1527} 2451}
1528 2452
2453unsigned int ecb_cold
2454ev_embeddable_backends (void) EV_THROW
2455{
2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2457
2458 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2459 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2460 flags &= ~EVBACKEND_EPOLL;
2461
2462 return flags;
2463}
2464
1529unsigned int 2465unsigned int
1530ev_embeddable_backends (void)
1531{
1532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1533
1534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1535 /* please fix it and tell me how to detect the fix */
1536 flags &= ~EVBACKEND_EPOLL;
1537
1538 return flags;
1539}
1540
1541unsigned int
1542ev_backend (EV_P) 2466ev_backend (EV_P) EV_THROW
1543{ 2467{
1544 return backend; 2468 return backend;
1545} 2469}
1546 2470
1547#if EV_FEATURE_API 2471#if EV_FEATURE_API
1548unsigned int 2472unsigned int
1549ev_iteration (EV_P) 2473ev_iteration (EV_P) EV_THROW
1550{ 2474{
1551 return loop_count; 2475 return loop_count;
1552} 2476}
1553 2477
1554unsigned int 2478unsigned int
1555ev_depth (EV_P) 2479ev_depth (EV_P) EV_THROW
1556{ 2480{
1557 return loop_depth; 2481 return loop_depth;
1558} 2482}
1559 2483
1560void 2484void
1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1562{ 2486{
1563 io_blocktime = interval; 2487 io_blocktime = interval;
1564} 2488}
1565 2489
1566void 2490void
1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1568{ 2492{
1569 timeout_blocktime = interval; 2493 timeout_blocktime = interval;
1570} 2494}
1571 2495
1572void 2496void
1573ev_set_userdata (EV_P_ void *data) 2497ev_set_userdata (EV_P_ void *data) EV_THROW
1574{ 2498{
1575 userdata = data; 2499 userdata = data;
1576} 2500}
1577 2501
1578void * 2502void *
1579ev_userdata (EV_P) 2503ev_userdata (EV_P) EV_THROW
1580{ 2504{
1581 return userdata; 2505 return userdata;
1582} 2506}
1583 2507
2508void
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2509ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1585{ 2510{
1586 invoke_cb = invoke_pending_cb; 2511 invoke_cb = invoke_pending_cb;
1587} 2512}
1588 2513
2514void
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2515ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1590{ 2516{
1591 release_cb = release; 2517 release_cb = release;
1592 acquire_cb = acquire; 2518 acquire_cb = acquire;
1593} 2519}
1594#endif 2520#endif
1595 2521
1596/* initialise a loop structure, must be zero-initialised */ 2522/* initialise a loop structure, must be zero-initialised */
1597static void noinline 2523static void noinline ecb_cold
1598loop_init (EV_P_ unsigned int flags) 2524loop_init (EV_P_ unsigned int flags) EV_THROW
1599{ 2525{
1600 if (!backend) 2526 if (!backend)
1601 { 2527 {
2528 origflags = flags;
2529
1602#if EV_USE_REALTIME 2530#if EV_USE_REALTIME
1603 if (!have_realtime) 2531 if (!have_realtime)
1604 { 2532 {
1605 struct timespec ts; 2533 struct timespec ts;
1606 2534
… …
1628 if (!(flags & EVFLAG_NOENV) 2556 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure () 2557 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS")) 2558 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS")); 2559 flags = atoi (getenv ("LIBEV_FLAGS"));
1632 2560
1633 ev_rt_now = ev_time (); 2561 ev_rt_now = ev_time ();
1634 mn_now = get_clock (); 2562 mn_now = get_clock ();
1635 now_floor = mn_now; 2563 now_floor = mn_now;
1636 rtmn_diff = ev_rt_now - mn_now; 2564 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API 2565#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending; 2566 invoke_cb = ev_invoke_pending;
1639#endif 2567#endif
1640 2568
1641 io_blocktime = 0.; 2569 io_blocktime = 0.;
1642 timeout_blocktime = 0.; 2570 timeout_blocktime = 0.;
1643 backend = 0; 2571 backend = 0;
1644 backend_fd = -1; 2572 backend_fd = -1;
1645 sig_pending = 0; 2573 sig_pending = 0;
1646#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1647 async_pending = 0; 2575 async_pending = 0;
1648#endif 2576#endif
2577 pipe_write_skipped = 0;
2578 pipe_write_wanted = 0;
2579 evpipe [0] = -1;
2580 evpipe [1] = -1;
1649#if EV_USE_INOTIFY 2581#if EV_USE_INOTIFY
1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1651#endif 2583#endif
1652#if EV_USE_SIGNALFD 2584#if EV_USE_SIGNALFD
1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1654#endif 2586#endif
1655 2587
1656 if (!(flags & 0x0000ffffU)) 2588 if (!(flags & EVBACKEND_MASK))
1657 flags |= ev_recommended_backends (); 2589 flags |= ev_recommended_backends ();
1658 2590
2591#if EV_USE_IOCP
2592 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2593#endif
1659#if EV_USE_PORT 2594#if EV_USE_PORT
1660 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2595 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1661#endif 2596#endif
1662#if EV_USE_KQUEUE 2597#if EV_USE_KQUEUE
1663 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2598 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1680#endif 2615#endif
1681 } 2616 }
1682} 2617}
1683 2618
1684/* free up a loop structure */ 2619/* free up a loop structure */
1685static void noinline 2620void ecb_cold
1686loop_destroy (EV_P) 2621ev_loop_destroy (EV_P)
1687{ 2622{
1688 int i; 2623 int i;
2624
2625#if EV_MULTIPLICITY
2626 /* mimic free (0) */
2627 if (!EV_A)
2628 return;
2629#endif
2630
2631#if EV_CLEANUP_ENABLE
2632 /* queue cleanup watchers (and execute them) */
2633 if (expect_false (cleanupcnt))
2634 {
2635 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2636 EV_INVOKE_PENDING;
2637 }
2638#endif
2639
2640#if EV_CHILD_ENABLE
2641 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2642 {
2643 ev_ref (EV_A); /* child watcher */
2644 ev_signal_stop (EV_A_ &childev);
2645 }
2646#endif
1689 2647
1690 if (ev_is_active (&pipe_w)) 2648 if (ev_is_active (&pipe_w))
1691 { 2649 {
1692 /*ev_ref (EV_A);*/ 2650 /*ev_ref (EV_A);*/
1693 /*ev_io_stop (EV_A_ &pipe_w);*/ 2651 /*ev_io_stop (EV_A_ &pipe_w);*/
1694 2652
1695#if EV_USE_EVENTFD
1696 if (evfd >= 0)
1697 close (evfd);
1698#endif
1699
1700 if (evpipe [0] >= 0)
1701 {
1702 EV_WIN32_CLOSE_FD (evpipe [0]); 2653 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1703 EV_WIN32_CLOSE_FD (evpipe [1]); 2654 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1704 }
1705 } 2655 }
1706 2656
1707#if EV_USE_SIGNALFD 2657#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w)) 2658 if (ev_is_active (&sigfd_w))
1709 close (sigfd); 2659 close (sigfd);
… …
1715#endif 2665#endif
1716 2666
1717 if (backend_fd >= 0) 2667 if (backend_fd >= 0)
1718 close (backend_fd); 2668 close (backend_fd);
1719 2669
2670#if EV_USE_IOCP
2671 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2672#endif
1720#if EV_USE_PORT 2673#if EV_USE_PORT
1721 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2674 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1722#endif 2675#endif
1723#if EV_USE_KQUEUE 2676#if EV_USE_KQUEUE
1724 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2677 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1751 array_free (periodic, EMPTY); 2704 array_free (periodic, EMPTY);
1752#endif 2705#endif
1753#if EV_FORK_ENABLE 2706#if EV_FORK_ENABLE
1754 array_free (fork, EMPTY); 2707 array_free (fork, EMPTY);
1755#endif 2708#endif
2709#if EV_CLEANUP_ENABLE
2710 array_free (cleanup, EMPTY);
2711#endif
1756 array_free (prepare, EMPTY); 2712 array_free (prepare, EMPTY);
1757 array_free (check, EMPTY); 2713 array_free (check, EMPTY);
1758#if EV_ASYNC_ENABLE 2714#if EV_ASYNC_ENABLE
1759 array_free (async, EMPTY); 2715 array_free (async, EMPTY);
1760#endif 2716#endif
1761 2717
1762 backend = 0; 2718 backend = 0;
2719
2720#if EV_MULTIPLICITY
2721 if (ev_is_default_loop (EV_A))
2722#endif
2723 ev_default_loop_ptr = 0;
2724#if EV_MULTIPLICITY
2725 else
2726 ev_free (EV_A);
2727#endif
1763} 2728}
1764 2729
1765#if EV_USE_INOTIFY 2730#if EV_USE_INOTIFY
1766inline_size void infy_fork (EV_P); 2731inline_size void infy_fork (EV_P);
1767#endif 2732#endif
… …
1780#endif 2745#endif
1781#if EV_USE_INOTIFY 2746#if EV_USE_INOTIFY
1782 infy_fork (EV_A); 2747 infy_fork (EV_A);
1783#endif 2748#endif
1784 2749
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1785 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1786 { 2752 {
1787 /* this "locks" the handlers against writing to the pipe */ 2753 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1788 /* while we modify the fd vars */
1789 sig_pending = 1;
1790#if EV_ASYNC_ENABLE
1791 async_pending = 1;
1792#endif
1793 2754
1794 ev_ref (EV_A); 2755 ev_ref (EV_A);
1795 ev_io_stop (EV_A_ &pipe_w); 2756 ev_io_stop (EV_A_ &pipe_w);
1796 2757
1797#if EV_USE_EVENTFD
1798 if (evfd >= 0)
1799 close (evfd);
1800#endif
1801
1802 if (evpipe [0] >= 0) 2758 if (evpipe [0] >= 0)
1803 {
1804 EV_WIN32_CLOSE_FD (evpipe [0]); 2759 EV_WIN32_CLOSE_FD (evpipe [0]);
1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1806 }
1807 2760
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 evpipe_init (EV_A); 2761 evpipe_init (EV_A);
1810 /* now iterate over everything, in case we missed something */ 2762 /* iterate over everything, in case we missed something before */
1811 pipecb (EV_A_ &pipe_w, EV_READ); 2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1812#endif
1813 } 2764 }
2765#endif
1814 2766
1815 postfork = 0; 2767 postfork = 0;
1816} 2768}
1817 2769
1818#if EV_MULTIPLICITY 2770#if EV_MULTIPLICITY
1819 2771
1820struct ev_loop * 2772struct ev_loop * ecb_cold
1821ev_loop_new (unsigned int flags) 2773ev_loop_new (unsigned int flags) EV_THROW
1822{ 2774{
1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1824 2776
1825 memset (EV_A, 0, sizeof (struct ev_loop)); 2777 memset (EV_A, 0, sizeof (struct ev_loop));
1826 loop_init (EV_A_ flags); 2778 loop_init (EV_A_ flags);
1827 2779
1828 if (ev_backend (EV_A)) 2780 if (ev_backend (EV_A))
1829 return EV_A; 2781 return EV_A;
1830 2782
2783 ev_free (EV_A);
1831 return 0; 2784 return 0;
1832} 2785}
1833 2786
1834void
1835ev_loop_destroy (EV_P)
1836{
1837 loop_destroy (EV_A);
1838 ev_free (loop);
1839}
1840
1841void
1842ev_loop_fork (EV_P)
1843{
1844 postfork = 1; /* must be in line with ev_default_fork */
1845}
1846#endif /* multiplicity */ 2787#endif /* multiplicity */
1847 2788
1848#if EV_VERIFY 2789#if EV_VERIFY
1849static void noinline 2790static void noinline ecb_cold
1850verify_watcher (EV_P_ W w) 2791verify_watcher (EV_P_ W w)
1851{ 2792{
1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2793 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1853 2794
1854 if (w->pending) 2795 if (w->pending)
1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2796 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1856} 2797}
1857 2798
1858static void noinline 2799static void noinline ecb_cold
1859verify_heap (EV_P_ ANHE *heap, int N) 2800verify_heap (EV_P_ ANHE *heap, int N)
1860{ 2801{
1861 int i; 2802 int i;
1862 2803
1863 for (i = HEAP0; i < N + HEAP0; ++i) 2804 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1868 2809
1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2810 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1870 } 2811 }
1871} 2812}
1872 2813
1873static void noinline 2814static void noinline ecb_cold
1874array_verify (EV_P_ W *ws, int cnt) 2815array_verify (EV_P_ W *ws, int cnt)
1875{ 2816{
1876 while (cnt--) 2817 while (cnt--)
1877 { 2818 {
1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2819 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1880 } 2821 }
1881} 2822}
1882#endif 2823#endif
1883 2824
1884#if EV_FEATURE_API 2825#if EV_FEATURE_API
1885void 2826void ecb_cold
1886ev_verify (EV_P) 2827ev_verify (EV_P) EV_THROW
1887{ 2828{
1888#if EV_VERIFY 2829#if EV_VERIFY
1889 int i; 2830 int i;
1890 WL w; 2831 WL w, w2;
1891 2832
1892 assert (activecnt >= -1); 2833 assert (activecnt >= -1);
1893 2834
1894 assert (fdchangemax >= fdchangecnt); 2835 assert (fdchangemax >= fdchangecnt);
1895 for (i = 0; i < fdchangecnt; ++i) 2836 for (i = 0; i < fdchangecnt; ++i)
1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2837 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1897 2838
1898 assert (anfdmax >= 0); 2839 assert (anfdmax >= 0);
1899 for (i = 0; i < anfdmax; ++i) 2840 for (i = 0; i < anfdmax; ++i)
2841 {
2842 int j = 0;
2843
1900 for (w = anfds [i].head; w; w = w->next) 2844 for (w = w2 = anfds [i].head; w; w = w->next)
1901 { 2845 {
1902 verify_watcher (EV_A_ (W)w); 2846 verify_watcher (EV_A_ (W)w);
2847
2848 if (j++ & 1)
2849 {
2850 assert (("libev: io watcher list contains a loop", w != w2));
2851 w2 = w2->next;
2852 }
2853
1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2854 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2855 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1905 } 2856 }
2857 }
1906 2858
1907 assert (timermax >= timercnt); 2859 assert (timermax >= timercnt);
1908 verify_heap (EV_A_ timers, timercnt); 2860 verify_heap (EV_A_ timers, timercnt);
1909 2861
1910#if EV_PERIODIC_ENABLE 2862#if EV_PERIODIC_ENABLE
… …
1925#if EV_FORK_ENABLE 2877#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt); 2878 assert (forkmax >= forkcnt);
1927 array_verify (EV_A_ (W *)forks, forkcnt); 2879 array_verify (EV_A_ (W *)forks, forkcnt);
1928#endif 2880#endif
1929 2881
2882#if EV_CLEANUP_ENABLE
2883 assert (cleanupmax >= cleanupcnt);
2884 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2885#endif
2886
1930#if EV_ASYNC_ENABLE 2887#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt); 2888 assert (asyncmax >= asynccnt);
1932 array_verify (EV_A_ (W *)asyncs, asynccnt); 2889 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif 2890#endif
1934 2891
… …
1951#endif 2908#endif
1952} 2909}
1953#endif 2910#endif
1954 2911
1955#if EV_MULTIPLICITY 2912#if EV_MULTIPLICITY
1956struct ev_loop * 2913struct ev_loop * ecb_cold
1957ev_default_loop_init (unsigned int flags)
1958#else 2914#else
1959int 2915int
2916#endif
1960ev_default_loop (unsigned int flags) 2917ev_default_loop (unsigned int flags) EV_THROW
1961#endif
1962{ 2918{
1963 if (!ev_default_loop_ptr) 2919 if (!ev_default_loop_ptr)
1964 { 2920 {
1965#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1966 EV_P = ev_default_loop_ptr = &default_loop_struct; 2922 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1985 2941
1986 return ev_default_loop_ptr; 2942 return ev_default_loop_ptr;
1987} 2943}
1988 2944
1989void 2945void
1990ev_default_destroy (void) 2946ev_loop_fork (EV_P) EV_THROW
1991{ 2947{
1992#if EV_MULTIPLICITY 2948 postfork = 1;
1993 EV_P = ev_default_loop_ptr;
1994#endif
1995
1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1999 ev_ref (EV_A); /* child watcher */
2000 ev_signal_stop (EV_A_ &childev);
2001#endif
2002
2003 loop_destroy (EV_A);
2004}
2005
2006void
2007ev_default_fork (void)
2008{
2009#if EV_MULTIPLICITY
2010 EV_P = ev_default_loop_ptr;
2011#endif
2012
2013 postfork = 1; /* must be in line with ev_loop_fork */
2014} 2949}
2015 2950
2016/*****************************************************************************/ 2951/*****************************************************************************/
2017 2952
2018void 2953void
… …
2020{ 2955{
2021 EV_CB_INVOKE ((W)w, revents); 2956 EV_CB_INVOKE ((W)w, revents);
2022} 2957}
2023 2958
2024unsigned int 2959unsigned int
2025ev_pending_count (EV_P) 2960ev_pending_count (EV_P) EV_THROW
2026{ 2961{
2027 int pri; 2962 int pri;
2028 unsigned int count = 0; 2963 unsigned int count = 0;
2029 2964
2030 for (pri = NUMPRI; pri--; ) 2965 for (pri = NUMPRI; pri--; )
… …
2034} 2969}
2035 2970
2036void noinline 2971void noinline
2037ev_invoke_pending (EV_P) 2972ev_invoke_pending (EV_P)
2038{ 2973{
2039 int pri; 2974 pendingpri = NUMPRI;
2040 2975
2041 for (pri = NUMPRI; pri--; ) 2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2977 {
2978 --pendingpri;
2979
2042 while (pendingcnt [pri]) 2980 while (pendingcnt [pendingpri])
2043 { 2981 {
2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2045 2983
2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
2048
2049 p->w->pending = 0; 2984 p->w->pending = 0;
2050 EV_CB_INVOKE (p->w, p->events); 2985 EV_CB_INVOKE (p->w, p->events);
2051 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
2052 } 2987 }
2988 }
2053} 2989}
2054 2990
2055#if EV_IDLE_ENABLE 2991#if EV_IDLE_ENABLE
2056/* make idle watchers pending. this handles the "call-idle */ 2992/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */ 2993/* only when higher priorities are idle" logic */
… …
2114 feed_reverse_done (EV_A_ EV_TIMER); 3050 feed_reverse_done (EV_A_ EV_TIMER);
2115 } 3051 }
2116} 3052}
2117 3053
2118#if EV_PERIODIC_ENABLE 3054#if EV_PERIODIC_ENABLE
3055
3056static void noinline
3057periodic_recalc (EV_P_ ev_periodic *w)
3058{
3059 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3060 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3061
3062 /* the above almost always errs on the low side */
3063 while (at <= ev_rt_now)
3064 {
3065 ev_tstamp nat = at + w->interval;
3066
3067 /* when resolution fails us, we use ev_rt_now */
3068 if (expect_false (nat == at))
3069 {
3070 at = ev_rt_now;
3071 break;
3072 }
3073
3074 at = nat;
3075 }
3076
3077 ev_at (w) = at;
3078}
3079
2119/* make periodics pending */ 3080/* make periodics pending */
2120inline_size void 3081inline_size void
2121periodics_reify (EV_P) 3082periodics_reify (EV_P)
2122{ 3083{
2123 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
2124 3085
2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3086 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2126 { 3087 {
2127 int feed_count = 0;
2128
2129 do 3088 do
2130 { 3089 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3090 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132 3091
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3092 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2142 ANHE_at_cache (periodics [HEAP0]); 3101 ANHE_at_cache (periodics [HEAP0]);
2143 downheap (periodics, periodiccnt, HEAP0); 3102 downheap (periodics, periodiccnt, HEAP0);
2144 } 3103 }
2145 else if (w->interval) 3104 else if (w->interval)
2146 { 3105 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3106 periodic_recalc (EV_A_ w);
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]); 3107 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0); 3108 downheap (periodics, periodiccnt, HEAP0);
2163 } 3109 }
2164 else 3110 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2173 } 3119 }
2174} 3120}
2175 3121
2176/* simply recalculate all periodics */ 3122/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3123/* TODO: maybe ensure that at least one event happens when jumping forward? */
2178static void noinline 3124static void noinline ecb_cold
2179periodics_reschedule (EV_P) 3125periodics_reschedule (EV_P)
2180{ 3126{
2181 int i; 3127 int i;
2182 3128
2183 /* adjust periodics after time jump */ 3129 /* adjust periodics after time jump */
… …
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2187 3133
2188 if (w->reschedule_cb) 3134 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3135 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 3136 else if (w->interval)
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3137 periodic_recalc (EV_A_ w);
2192 3138
2193 ANHE_at_cache (periodics [i]); 3139 ANHE_at_cache (periodics [i]);
2194 } 3140 }
2195 3141
2196 reheap (periodics, periodiccnt); 3142 reheap (periodics, periodiccnt);
2197} 3143}
2198#endif 3144#endif
2199 3145
2200/* adjust all timers by a given offset */ 3146/* adjust all timers by a given offset */
2201static void noinline 3147static void noinline ecb_cold
2202timers_reschedule (EV_P_ ev_tstamp adjust) 3148timers_reschedule (EV_P_ ev_tstamp adjust)
2203{ 3149{
2204 int i; 3150 int i;
2205 3151
2206 for (i = 0; i < timercnt; ++i) 3152 for (i = 0; i < timercnt; ++i)
… …
2243 * doesn't hurt either as we only do this on time-jumps or 3189 * doesn't hurt either as we only do this on time-jumps or
2244 * in the unlikely event of having been preempted here. 3190 * in the unlikely event of having been preempted here.
2245 */ 3191 */
2246 for (i = 4; --i; ) 3192 for (i = 4; --i; )
2247 { 3193 {
3194 ev_tstamp diff;
2248 rtmn_diff = ev_rt_now - mn_now; 3195 rtmn_diff = ev_rt_now - mn_now;
2249 3196
3197 diff = odiff - rtmn_diff;
3198
2250 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3199 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2251 return; /* all is well */ 3200 return; /* all is well */
2252 3201
2253 ev_rt_now = ev_time (); 3202 ev_rt_now = ev_time ();
2254 mn_now = get_clock (); 3203 mn_now = get_clock ();
2255 now_floor = mn_now; 3204 now_floor = mn_now;
… …
2277 3226
2278 mn_now = ev_rt_now; 3227 mn_now = ev_rt_now;
2279 } 3228 }
2280} 3229}
2281 3230
2282void 3231int
2283ev_run (EV_P_ int flags) 3232ev_run (EV_P_ int flags)
2284{ 3233{
2285#if EV_FEATURE_API 3234#if EV_FEATURE_API
2286 ++loop_depth; 3235 ++loop_depth;
2287#endif 3236#endif
… …
2345 ev_tstamp prev_mn_now = mn_now; 3294 ev_tstamp prev_mn_now = mn_now;
2346 3295
2347 /* update time to cancel out callback processing overhead */ 3296 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100); 3297 time_update (EV_A_ 1e100);
2349 3298
3299 /* from now on, we want a pipe-wake-up */
3300 pipe_write_wanted = 1;
3301
3302 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3303
2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3304 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2351 { 3305 {
2352 waittime = MAX_BLOCKTIME; 3306 waittime = MAX_BLOCKTIME;
2353 3307
2354 if (timercnt) 3308 if (timercnt)
2355 { 3309 {
2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3310 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2357 if (waittime > to) waittime = to; 3311 if (waittime > to) waittime = to;
2358 } 3312 }
2359 3313
2360#if EV_PERIODIC_ENABLE 3314#if EV_PERIODIC_ENABLE
2361 if (periodiccnt) 3315 if (periodiccnt)
2362 { 3316 {
2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3317 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2364 if (waittime > to) waittime = to; 3318 if (waittime > to) waittime = to;
2365 } 3319 }
2366#endif 3320#endif
2367 3321
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3322 /* don't let timeouts decrease the waittime below timeout_blocktime */
2369 if (expect_false (waittime < timeout_blocktime)) 3323 if (expect_false (waittime < timeout_blocktime))
2370 waittime = timeout_blocktime; 3324 waittime = timeout_blocktime;
3325
3326 /* at this point, we NEED to wait, so we have to ensure */
3327 /* to pass a minimum nonzero value to the backend */
3328 if (expect_false (waittime < backend_mintime))
3329 waittime = backend_mintime;
2371 3330
2372 /* extra check because io_blocktime is commonly 0 */ 3331 /* extra check because io_blocktime is commonly 0 */
2373 if (expect_false (io_blocktime)) 3332 if (expect_false (io_blocktime))
2374 { 3333 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3334 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376 3335
2377 if (sleeptime > waittime - backend_fudge) 3336 if (sleeptime > waittime - backend_mintime)
2378 sleeptime = waittime - backend_fudge; 3337 sleeptime = waittime - backend_mintime;
2379 3338
2380 if (expect_true (sleeptime > 0.)) 3339 if (expect_true (sleeptime > 0.))
2381 { 3340 {
2382 ev_sleep (sleeptime); 3341 ev_sleep (sleeptime);
2383 waittime -= sleeptime; 3342 waittime -= sleeptime;
… …
2390#endif 3349#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3350 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2392 backend_poll (EV_A_ waittime); 3351 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3352 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2394 3353
3354 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3355
3356 ECB_MEMORY_FENCE_ACQUIRE;
3357 if (pipe_write_skipped)
3358 {
3359 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3361 }
3362
3363
2395 /* update ev_rt_now, do magic */ 3364 /* update ev_rt_now, do magic */
2396 time_update (EV_A_ waittime + sleeptime); 3365 time_update (EV_A_ waittime + sleeptime);
2397 } 3366 }
2398 3367
2399 /* queue pending timers and reschedule them */ 3368 /* queue pending timers and reschedule them */
… …
2425 loop_done = EVBREAK_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
2426 3395
2427#if EV_FEATURE_API 3396#if EV_FEATURE_API
2428 --loop_depth; 3397 --loop_depth;
2429#endif 3398#endif
3399
3400 return activecnt;
2430} 3401}
2431 3402
2432void 3403void
2433ev_break (EV_P_ int how) 3404ev_break (EV_P_ int how) EV_THROW
2434{ 3405{
2435 loop_done = how; 3406 loop_done = how;
2436} 3407}
2437 3408
2438void 3409void
2439ev_ref (EV_P) 3410ev_ref (EV_P) EV_THROW
2440{ 3411{
2441 ++activecnt; 3412 ++activecnt;
2442} 3413}
2443 3414
2444void 3415void
2445ev_unref (EV_P) 3416ev_unref (EV_P) EV_THROW
2446{ 3417{
2447 --activecnt; 3418 --activecnt;
2448} 3419}
2449 3420
2450void 3421void
2451ev_now_update (EV_P) 3422ev_now_update (EV_P) EV_THROW
2452{ 3423{
2453 time_update (EV_A_ 1e100); 3424 time_update (EV_A_ 1e100);
2454} 3425}
2455 3426
2456void 3427void
2457ev_suspend (EV_P) 3428ev_suspend (EV_P) EV_THROW
2458{ 3429{
2459 ev_now_update (EV_A); 3430 ev_now_update (EV_A);
2460} 3431}
2461 3432
2462void 3433void
2463ev_resume (EV_P) 3434ev_resume (EV_P) EV_THROW
2464{ 3435{
2465 ev_tstamp mn_prev = mn_now; 3436 ev_tstamp mn_prev = mn_now;
2466 3437
2467 ev_now_update (EV_A); 3438 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev); 3439 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2507 w->pending = 0; 3478 w->pending = 0;
2508 } 3479 }
2509} 3480}
2510 3481
2511int 3482int
2512ev_clear_pending (EV_P_ void *w) 3483ev_clear_pending (EV_P_ void *w) EV_THROW
2513{ 3484{
2514 W w_ = (W)w; 3485 W w_ = (W)w;
2515 int pending = w_->pending; 3486 int pending = w_->pending;
2516 3487
2517 if (expect_true (pending)) 3488 if (expect_true (pending))
… …
2550} 3521}
2551 3522
2552/*****************************************************************************/ 3523/*****************************************************************************/
2553 3524
2554void noinline 3525void noinline
2555ev_io_start (EV_P_ ev_io *w) 3526ev_io_start (EV_P_ ev_io *w) EV_THROW
2556{ 3527{
2557 int fd = w->fd; 3528 int fd = w->fd;
2558 3529
2559 if (expect_false (ev_is_active (w))) 3530 if (expect_false (ev_is_active (w)))
2560 return; 3531 return;
… …
2566 3537
2567 ev_start (EV_A_ (W)w, 1); 3538 ev_start (EV_A_ (W)w, 1);
2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2569 wlist_add (&anfds[fd].head, (WL)w); 3540 wlist_add (&anfds[fd].head, (WL)w);
2570 3541
3542 /* common bug, apparently */
3543 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3544
2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3545 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2572 w->events &= ~EV__IOFDSET; 3546 w->events &= ~EV__IOFDSET;
2573 3547
2574 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2575} 3549}
2576 3550
2577void noinline 3551void noinline
2578ev_io_stop (EV_P_ ev_io *w) 3552ev_io_stop (EV_P_ ev_io *w) EV_THROW
2579{ 3553{
2580 clear_pending (EV_A_ (W)w); 3554 clear_pending (EV_A_ (W)w);
2581 if (expect_false (!ev_is_active (w))) 3555 if (expect_false (!ev_is_active (w)))
2582 return; 3556 return;
2583 3557
… …
2592 3566
2593 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2594} 3568}
2595 3569
2596void noinline 3570void noinline
2597ev_timer_start (EV_P_ ev_timer *w) 3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2598{ 3572{
2599 if (expect_false (ev_is_active (w))) 3573 if (expect_false (ev_is_active (w)))
2600 return; 3574 return;
2601 3575
2602 ev_at (w) += mn_now; 3576 ev_at (w) += mn_now;
… …
2616 3590
2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3591 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2618} 3592}
2619 3593
2620void noinline 3594void noinline
2621ev_timer_stop (EV_P_ ev_timer *w) 3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2622{ 3596{
2623 clear_pending (EV_A_ (W)w); 3597 clear_pending (EV_A_ (W)w);
2624 if (expect_false (!ev_is_active (w))) 3598 if (expect_false (!ev_is_active (w)))
2625 return; 3599 return;
2626 3600
… …
2646 3620
2647 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2648} 3622}
2649 3623
2650void noinline 3624void noinline
2651ev_timer_again (EV_P_ ev_timer *w) 3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2652{ 3626{
2653 EV_FREQUENT_CHECK; 3627 EV_FREQUENT_CHECK;
3628
3629 clear_pending (EV_A_ (W)w);
2654 3630
2655 if (ev_is_active (w)) 3631 if (ev_is_active (w))
2656 { 3632 {
2657 if (w->repeat) 3633 if (w->repeat)
2658 { 3634 {
… …
2671 3647
2672 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2673} 3649}
2674 3650
2675ev_tstamp 3651ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w) 3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2677{ 3653{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679} 3655}
2680 3656
2681#if EV_PERIODIC_ENABLE 3657#if EV_PERIODIC_ENABLE
2682void noinline 3658void noinline
2683ev_periodic_start (EV_P_ ev_periodic *w) 3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2684{ 3660{
2685 if (expect_false (ev_is_active (w))) 3661 if (expect_false (ev_is_active (w)))
2686 return; 3662 return;
2687 3663
2688 if (w->reschedule_cb) 3664 if (w->reschedule_cb)
2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2690 else if (w->interval) 3666 else if (w->interval)
2691 { 3667 {
2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3668 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2693 /* this formula differs from the one in periodic_reify because we do not always round up */ 3669 periodic_recalc (EV_A_ w);
2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2695 } 3670 }
2696 else 3671 else
2697 ev_at (w) = w->offset; 3672 ev_at (w) = w->offset;
2698 3673
2699 EV_FREQUENT_CHECK; 3674 EV_FREQUENT_CHECK;
… …
2709 3684
2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3685 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2711} 3686}
2712 3687
2713void noinline 3688void noinline
2714ev_periodic_stop (EV_P_ ev_periodic *w) 3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2715{ 3690{
2716 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2717 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2718 return; 3693 return;
2719 3694
… …
2737 3712
2738 EV_FREQUENT_CHECK; 3713 EV_FREQUENT_CHECK;
2739} 3714}
2740 3715
2741void noinline 3716void noinline
2742ev_periodic_again (EV_P_ ev_periodic *w) 3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2743{ 3718{
2744 /* TODO: use adjustheap and recalculation */ 3719 /* TODO: use adjustheap and recalculation */
2745 ev_periodic_stop (EV_A_ w); 3720 ev_periodic_stop (EV_A_ w);
2746 ev_periodic_start (EV_A_ w); 3721 ev_periodic_start (EV_A_ w);
2747} 3722}
… …
2752#endif 3727#endif
2753 3728
2754#if EV_SIGNAL_ENABLE 3729#if EV_SIGNAL_ENABLE
2755 3730
2756void noinline 3731void noinline
2757ev_signal_start (EV_P_ ev_signal *w) 3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2758{ 3733{
2759 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2760 return; 3735 return;
2761 3736
2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3737 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2764#if EV_MULTIPLICITY 3739#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops", 3740 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3741 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2767 3742
2768 signals [w->signum - 1].loop = EV_A; 3743 signals [w->signum - 1].loop = EV_A;
3744 ECB_MEMORY_FENCE_RELEASE;
2769#endif 3745#endif
2770 3746
2771 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
2772 3748
2773#if EV_USE_SIGNALFD 3749#if EV_USE_SIGNALFD
… …
2820 sa.sa_handler = ev_sighandler; 3796 sa.sa_handler = ev_sighandler;
2821 sigfillset (&sa.sa_mask); 3797 sigfillset (&sa.sa_mask);
2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3798 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2823 sigaction (w->signum, &sa, 0); 3799 sigaction (w->signum, &sa, 0);
2824 3800
3801 if (origflags & EVFLAG_NOSIGMASK)
3802 {
2825 sigemptyset (&sa.sa_mask); 3803 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum); 3804 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3805 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3806 }
2828#endif 3807#endif
2829 } 3808 }
2830 3809
2831 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
2832} 3811}
2833 3812
2834void noinline 3813void noinline
2835ev_signal_stop (EV_P_ ev_signal *w) 3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2836{ 3815{
2837 clear_pending (EV_A_ (W)w); 3816 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 3817 if (expect_false (!ev_is_active (w)))
2839 return; 3818 return;
2840 3819
… …
2871#endif 3850#endif
2872 3851
2873#if EV_CHILD_ENABLE 3852#if EV_CHILD_ENABLE
2874 3853
2875void 3854void
2876ev_child_start (EV_P_ ev_child *w) 3855ev_child_start (EV_P_ ev_child *w) EV_THROW
2877{ 3856{
2878#if EV_MULTIPLICITY 3857#if EV_MULTIPLICITY
2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3858 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2880#endif 3859#endif
2881 if (expect_false (ev_is_active (w))) 3860 if (expect_false (ev_is_active (w)))
… …
2888 3867
2889 EV_FREQUENT_CHECK; 3868 EV_FREQUENT_CHECK;
2890} 3869}
2891 3870
2892void 3871void
2893ev_child_stop (EV_P_ ev_child *w) 3872ev_child_stop (EV_P_ ev_child *w) EV_THROW
2894{ 3873{
2895 clear_pending (EV_A_ (W)w); 3874 clear_pending (EV_A_ (W)w);
2896 if (expect_false (!ev_is_active (w))) 3875 if (expect_false (!ev_is_active (w)))
2897 return; 3876 return;
2898 3877
… …
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2926 3905
2927static void noinline 3906static void noinline
2928infy_add (EV_P_ ev_stat *w) 3907infy_add (EV_P_ ev_stat *w)
2929{ 3908{
2930 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); 3909 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3912 | IN_DONT_FOLLOW | IN_MASK_ADD);
2931 3913
2932 if (w->wd >= 0) 3914 if (w->wd >= 0)
2933 { 3915 {
2934 struct statfs sfs; 3916 struct statfs sfs;
2935 3917
… …
2939 3921
2940 if (!fs_2625) 3922 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3923 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs) 3924 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */ 3925 && (sfs.f_type == 0x1373 /* devfs */
3926 || sfs.f_type == 0x4006 /* fat */
3927 || sfs.f_type == 0x4d44 /* msdos */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */ 3928 || sfs.f_type == 0xEF53 /* ext2/3 */
3929 || sfs.f_type == 0x72b6 /* jffs2 */
3930 || sfs.f_type == 0x858458f6 /* ramfs */
3931 || sfs.f_type == 0x5346544e /* ntfs */
2945 || sfs.f_type == 0x3153464a /* jfs */ 3932 || sfs.f_type == 0x3153464a /* jfs */
3933 || sfs.f_type == 0x9123683e /* btrfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */ 3934 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */ 3935 || sfs.f_type == 0x01021994 /* tmpfs */
2948 || sfs.f_type == 0x58465342 /* xfs */)) 3936 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3937 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else 3938 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3939 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2952 } 3940 }
… …
2973 if (!pend || pend == path) 3961 if (!pend || pend == path)
2974 break; 3962 break;
2975 3963
2976 *pend = 0; 3964 *pend = 0;
2977 w->wd = inotify_add_watch (fs_fd, path, mask); 3965 w->wd = inotify_add_watch (fs_fd, path, mask);
2978 } 3966 }
2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3967 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2980 } 3968 }
2981 } 3969 }
2982 3970
2983 if (w->wd >= 0) 3971 if (w->wd >= 0)
… …
3050 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4038 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len; 4039 ofs += sizeof (struct inotify_event) + ev->len;
3052 } 4040 }
3053} 4041}
3054 4042
3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void 4043inline_size void ecb_cold
3088ev_check_2625 (EV_P) 4044ev_check_2625 (EV_P)
3089{ 4045{
3090 /* kernels < 2.6.25 are borked 4046 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4047 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */ 4048 */
… …
3097} 4053}
3098 4054
3099inline_size int 4055inline_size int
3100infy_newfd (void) 4056infy_newfd (void)
3101{ 4057{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4058#if defined IN_CLOEXEC && defined IN_NONBLOCK
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4059 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0) 4060 if (fd >= 0)
3105 return fd; 4061 return fd;
3106#endif 4062#endif
3107 return inotify_init (); 4063 return inotify_init ();
… …
3182#else 4138#else
3183# define EV_LSTAT(p,b) lstat (p, b) 4139# define EV_LSTAT(p,b) lstat (p, b)
3184#endif 4140#endif
3185 4141
3186void 4142void
3187ev_stat_stat (EV_P_ ev_stat *w) 4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3188{ 4144{
3189 if (lstat (w->path, &w->attr) < 0) 4145 if (lstat (w->path, &w->attr) < 0)
3190 w->attr.st_nlink = 0; 4146 w->attr.st_nlink = 0;
3191 else if (!w->attr.st_nlink) 4147 else if (!w->attr.st_nlink)
3192 w->attr.st_nlink = 1; 4148 w->attr.st_nlink = 1;
… …
3231 ev_feed_event (EV_A_ w, EV_STAT); 4187 ev_feed_event (EV_A_ w, EV_STAT);
3232 } 4188 }
3233} 4189}
3234 4190
3235void 4191void
3236ev_stat_start (EV_P_ ev_stat *w) 4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3237{ 4193{
3238 if (expect_false (ev_is_active (w))) 4194 if (expect_false (ev_is_active (w)))
3239 return; 4195 return;
3240 4196
3241 ev_stat_stat (EV_A_ w); 4197 ev_stat_stat (EV_A_ w);
… …
3262 4218
3263 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3264} 4220}
3265 4221
3266void 4222void
3267ev_stat_stop (EV_P_ ev_stat *w) 4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3268{ 4224{
3269 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3270 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3271 return; 4227 return;
3272 4228
… …
3288} 4244}
3289#endif 4245#endif
3290 4246
3291#if EV_IDLE_ENABLE 4247#if EV_IDLE_ENABLE
3292void 4248void
3293ev_idle_start (EV_P_ ev_idle *w) 4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3294{ 4250{
3295 if (expect_false (ev_is_active (w))) 4251 if (expect_false (ev_is_active (w)))
3296 return; 4252 return;
3297 4253
3298 pri_adjust (EV_A_ (W)w); 4254 pri_adjust (EV_A_ (W)w);
… …
3311 4267
3312 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3313} 4269}
3314 4270
3315void 4271void
3316ev_idle_stop (EV_P_ ev_idle *w) 4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3317{ 4273{
3318 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3319 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3320 return; 4276 return;
3321 4277
… …
3335} 4291}
3336#endif 4292#endif
3337 4293
3338#if EV_PREPARE_ENABLE 4294#if EV_PREPARE_ENABLE
3339void 4295void
3340ev_prepare_start (EV_P_ ev_prepare *w) 4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3341{ 4297{
3342 if (expect_false (ev_is_active (w))) 4298 if (expect_false (ev_is_active (w)))
3343 return; 4299 return;
3344 4300
3345 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
… …
3350 4306
3351 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3352} 4308}
3353 4309
3354void 4310void
3355ev_prepare_stop (EV_P_ ev_prepare *w) 4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3356{ 4312{
3357 clear_pending (EV_A_ (W)w); 4313 clear_pending (EV_A_ (W)w);
3358 if (expect_false (!ev_is_active (w))) 4314 if (expect_false (!ev_is_active (w)))
3359 return; 4315 return;
3360 4316
… …
3373} 4329}
3374#endif 4330#endif
3375 4331
3376#if EV_CHECK_ENABLE 4332#if EV_CHECK_ENABLE
3377void 4333void
3378ev_check_start (EV_P_ ev_check *w) 4334ev_check_start (EV_P_ ev_check *w) EV_THROW
3379{ 4335{
3380 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
3381 return; 4337 return;
3382 4338
3383 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
… …
3388 4344
3389 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3390} 4346}
3391 4347
3392void 4348void
3393ev_check_stop (EV_P_ ev_check *w) 4349ev_check_stop (EV_P_ ev_check *w) EV_THROW
3394{ 4350{
3395 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3396 if (expect_false (!ev_is_active (w))) 4352 if (expect_false (!ev_is_active (w)))
3397 return; 4353 return;
3398 4354
… …
3411} 4367}
3412#endif 4368#endif
3413 4369
3414#if EV_EMBED_ENABLE 4370#if EV_EMBED_ENABLE
3415void noinline 4371void noinline
3416ev_embed_sweep (EV_P_ ev_embed *w) 4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3417{ 4373{
3418 ev_run (w->other, EVRUN_NOWAIT); 4374 ev_run (w->other, EVRUN_NOWAIT);
3419} 4375}
3420 4376
3421static void 4377static void
… …
3469 ev_idle_stop (EV_A_ idle); 4425 ev_idle_stop (EV_A_ idle);
3470} 4426}
3471#endif 4427#endif
3472 4428
3473void 4429void
3474ev_embed_start (EV_P_ ev_embed *w) 4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3475{ 4431{
3476 if (expect_false (ev_is_active (w))) 4432 if (expect_false (ev_is_active (w)))
3477 return; 4433 return;
3478 4434
3479 { 4435 {
… …
3500 4456
3501 EV_FREQUENT_CHECK; 4457 EV_FREQUENT_CHECK;
3502} 4458}
3503 4459
3504void 4460void
3505ev_embed_stop (EV_P_ ev_embed *w) 4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3506{ 4462{
3507 clear_pending (EV_A_ (W)w); 4463 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4464 if (expect_false (!ev_is_active (w)))
3509 return; 4465 return;
3510 4466
… …
3520} 4476}
3521#endif 4477#endif
3522 4478
3523#if EV_FORK_ENABLE 4479#if EV_FORK_ENABLE
3524void 4480void
3525ev_fork_start (EV_P_ ev_fork *w) 4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3526{ 4482{
3527 if (expect_false (ev_is_active (w))) 4483 if (expect_false (ev_is_active (w)))
3528 return; 4484 return;
3529 4485
3530 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
… …
3535 4491
3536 EV_FREQUENT_CHECK; 4492 EV_FREQUENT_CHECK;
3537} 4493}
3538 4494
3539void 4495void
3540ev_fork_stop (EV_P_ ev_fork *w) 4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3541{ 4497{
3542 clear_pending (EV_A_ (W)w); 4498 clear_pending (EV_A_ (W)w);
3543 if (expect_false (!ev_is_active (w))) 4499 if (expect_false (!ev_is_active (w)))
3544 return; 4500 return;
3545 4501
… …
3556 4512
3557 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3558} 4514}
3559#endif 4515#endif
3560 4516
4517#if EV_CLEANUP_ENABLE
4518void
4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4520{
4521 if (expect_false (ev_is_active (w)))
4522 return;
4523
4524 EV_FREQUENT_CHECK;
4525
4526 ev_start (EV_A_ (W)w, ++cleanupcnt);
4527 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4528 cleanups [cleanupcnt - 1] = w;
4529
4530 /* cleanup watchers should never keep a refcount on the loop */
4531 ev_unref (EV_A);
4532 EV_FREQUENT_CHECK;
4533}
4534
4535void
4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4537{
4538 clear_pending (EV_A_ (W)w);
4539 if (expect_false (!ev_is_active (w)))
4540 return;
4541
4542 EV_FREQUENT_CHECK;
4543 ev_ref (EV_A);
4544
4545 {
4546 int active = ev_active (w);
4547
4548 cleanups [active - 1] = cleanups [--cleanupcnt];
4549 ev_active (cleanups [active - 1]) = active;
4550 }
4551
4552 ev_stop (EV_A_ (W)w);
4553
4554 EV_FREQUENT_CHECK;
4555}
4556#endif
4557
3561#if EV_ASYNC_ENABLE 4558#if EV_ASYNC_ENABLE
3562void 4559void
3563ev_async_start (EV_P_ ev_async *w) 4560ev_async_start (EV_P_ ev_async *w) EV_THROW
3564{ 4561{
3565 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
3566 return; 4563 return;
3567 4564
3568 w->sent = 0; 4565 w->sent = 0;
… …
3577 4574
3578 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3579} 4576}
3580 4577
3581void 4578void
3582ev_async_stop (EV_P_ ev_async *w) 4579ev_async_stop (EV_P_ ev_async *w) EV_THROW
3583{ 4580{
3584 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3585 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3586 return; 4583 return;
3587 4584
… …
3598 4595
3599 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
3600} 4597}
3601 4598
3602void 4599void
3603ev_async_send (EV_P_ ev_async *w) 4600ev_async_send (EV_P_ ev_async *w) EV_THROW
3604{ 4601{
3605 w->sent = 1; 4602 w->sent = 1;
3606 evpipe_write (EV_A_ &async_pending); 4603 evpipe_write (EV_A_ &async_pending);
3607} 4604}
3608#endif 4605#endif
… …
3645 4642
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3647} 4644}
3648 4645
3649void 4646void
3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3651{ 4648{
3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3653 4650
3654 if (expect_false (!once)) 4651 if (expect_false (!once))
3655 { 4652 {
… …
3676} 4673}
3677 4674
3678/*****************************************************************************/ 4675/*****************************************************************************/
3679 4676
3680#if EV_WALK_ENABLE 4677#if EV_WALK_ENABLE
3681void 4678void ecb_cold
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3683{ 4680{
3684 int i, j; 4681 int i, j;
3685 ev_watcher_list *wl, *wn; 4682 ev_watcher_list *wl, *wn;
3686 4683
3687 if (types & (EV_IO | EV_EMBED)) 4684 if (types & (EV_IO | EV_EMBED))
… …
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif 4728#endif
3732 4729
3733#if EV_IDLE_ENABLE 4730#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE) 4731 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; ) 4732 for (j = NUMPRI; j--; )
3736 for (i = idlecnt [j]; i--; ) 4733 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]); 4734 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif 4735#endif
3739 4736
3740#if EV_FORK_ENABLE 4737#if EV_FORK_ENABLE
… …
3793 4790
3794#if EV_MULTIPLICITY 4791#if EV_MULTIPLICITY
3795 #include "ev_wrap.h" 4792 #include "ev_wrap.h"
3796#endif 4793#endif
3797 4794
3798EV_CPP(})
3799

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