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Comparing libev/ev.c (file contents):
Revision 1.344 by root, Fri Jul 9 20:55:14 2010 UTC vs.
Revision 1.449 by root, Sun Sep 23 21:21:58 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396# endif 413# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 414#endif
402 415
403#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 418# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
412# else 425# else
413# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
414# endif 427# endif
415# endif 428# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 430#endif
424 431
425#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 434# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
434# else 441# else
435# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
436# endif 443# endif
437# endif 444# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 446
443struct signalfd_siginfo 447struct signalfd_siginfo
444{ 448{
445 uint32_t ssi_signo; 449 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
447}; 451};
448# ifdef __cplusplus
449}
450# endif 452#endif
451#endif
452
453 453
454/**/ 454/**/
455 455
456#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 458#else
459# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
460#endif 460#endif
461 461
462/* 462/*
463 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 465 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 468
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 519 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
478#else 536#else
479# define expect(expr,value) (expr) 537 #include <inttypes.h>
480# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
482# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
483# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 557 #endif
558#endif
485 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
488#define inline_size static inline 1013#define inline_size ecb_inline
489 1014
490#if EV_FEATURE_CODE 1015#if EV_FEATURE_CODE
491# define inline_speed static inline 1016# define inline_speed ecb_inline
492#else 1017#else
493# define inline_speed static noinline 1018# define inline_speed static noinline
494#endif 1019#endif
495 1020
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
511#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
512#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
513 1038
514#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
516/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif 1043#endif
519 1044
520#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
535# include "ev_win32.c" 1060# include "ev_win32.c"
536#endif 1061#endif
537 1062
538/*****************************************************************************/ 1063/*****************************************************************************/
539 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
540#if EV_AVOID_STDIO 1155#if EV_AVOID_STDIO
541static void noinline 1156static void noinline ecb_cold
542ev_printerr (const char *msg) 1157ev_printerr (const char *msg)
543{ 1158{
544 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
545} 1160}
546#endif 1161#endif
547 1162
548static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
549 1164
550void 1165void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1167{
553 syserr_cb = cb; 1168 syserr_cb = cb;
554} 1169}
555 1170
556static void noinline 1171static void noinline ecb_cold
557ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
558{ 1173{
559 if (!msg) 1174 if (!msg)
560 msg = "(libev) system error"; 1175 msg = "(libev) system error";
561 1176
562 if (syserr_cb) 1177 if (syserr_cb)
563 syserr_cb (msg); 1178 syserr_cb (msg);
564 else 1179 else
565 { 1180 {
566#if EV_AVOID_STDIO 1181#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1182 ev_printerr (msg);
570 ev_printerr (": "); 1183 ev_printerr (": ");
571 ev_printerr (err); 1184 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1185 ev_printerr ("\n");
573#else 1186#else
574 perror (msg); 1187 perror (msg);
575#endif 1188#endif
576 abort (); 1189 abort ();
577 } 1190 }
578} 1191}
579 1192
580static void * 1193static void *
581ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1195{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
589 */ 1201 */
590 1202
591 if (size) 1203 if (size)
592 return realloc (ptr, size); 1204 return realloc (ptr, size);
593 1205
594 free (ptr); 1206 free (ptr);
595 return 0; 1207 return 0;
596#endif
597} 1208}
598 1209
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1211
601void 1212void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1214{
604 alloc = cb; 1215 alloc = cb;
605} 1216}
606 1217
607inline_speed void * 1218inline_speed void *
… …
610 ptr = alloc (ptr, size); 1221 ptr = alloc (ptr, size);
611 1222
612 if (!ptr && size) 1223 if (!ptr && size)
613 { 1224 {
614#if EV_AVOID_STDIO 1225#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1226 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1227#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1228 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1229#endif
619 abort (); 1230 abort ();
620 } 1231 }
621 1232
622 return ptr; 1233 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1251 unsigned char unused;
641#if EV_USE_EPOLL 1252#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1253 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1254#endif
644#if EV_SELECT_IS_WINSOCKET 1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1256 SOCKET handle;
1257#endif
1258#if EV_USE_IOCP
1259 OVERLAPPED or, ow;
646#endif 1260#endif
647} ANFD; 1261} ANFD;
648 1262
649/* stores the pending event set for a given watcher */ 1263/* stores the pending event set for a given watcher */
650typedef struct 1264typedef struct
… …
692 #undef VAR 1306 #undef VAR
693 }; 1307 };
694 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
695 1309
696 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1312
699#else 1313#else
700 1314
701 ev_tstamp ev_rt_now; 1315 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1317 #include "ev_vars.h"
704 #undef VAR 1318 #undef VAR
705 1319
706 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1329# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1330# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1331# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1332#endif
719 1333
720#define EVUNLOOP_RECURSE 0x80 1334#define EVBREAK_RECURSE 0x80
721 1335
722/*****************************************************************************/ 1336/*****************************************************************************/
723 1337
724#ifndef EV_HAVE_EV_TIME 1338#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1339ev_tstamp
726ev_time (void) 1340ev_time (void) EV_THROW
727{ 1341{
728#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
730 { 1344 {
731 struct timespec ts; 1345 struct timespec ts;
… …
755 return ev_time (); 1369 return ev_time ();
756} 1370}
757 1371
758#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
759ev_tstamp 1373ev_tstamp
760ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
761{ 1375{
762 return ev_rt_now; 1376 return ev_rt_now;
763} 1377}
764#endif 1378#endif
765 1379
766void 1380void
767ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
768{ 1382{
769 if (delay > 0.) 1383 if (delay > 0.)
770 { 1384 {
771#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
772 struct timespec ts; 1386 struct timespec ts;
773 1387
774 ts.tv_sec = (time_t)delay; 1388 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1390#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
780#else 1392#else
781 struct timeval tv; 1393 struct timeval tv;
782 1394
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1396 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1397 /* by older ones */
1398 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
790#endif 1400#endif
791 } 1401 }
792} 1402}
793 1403
794/*****************************************************************************/ 1404/*****************************************************************************/
795 1405
796#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
797 1407
798/* find a suitable new size for the given array, */ 1408/* find a suitable new size for the given array, */
799/* hopefully by rounding to a ncie-to-malloc size */ 1409/* hopefully by rounding to a nice-to-malloc size */
800inline_size int 1410inline_size int
801array_nextsize (int elem, int cur, int cnt) 1411array_nextsize (int elem, int cur, int cnt)
802{ 1412{
803 int ncur = cur + 1; 1413 int ncur = cur + 1;
804 1414
805 do 1415 do
806 ncur <<= 1; 1416 ncur <<= 1;
807 while (cnt > ncur); 1417 while (cnt > ncur);
808 1418
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1421 {
812 ncur *= elem; 1422 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1426 }
817 1427
818 return ncur; 1428 return ncur;
819} 1429}
820 1430
821static noinline void * 1431static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1433{
824 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
826} 1436}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1440
831#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
833 { \ 1443 { \
834 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1448 }
839 1449
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1467pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1468{
859} 1469}
860 1470
861void noinline 1471void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1473{
864 W w_ = (W)w; 1474 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
866 1476
867 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
875 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
876} 1488}
877 1489
878inline_speed void 1490inline_speed void
879feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
880{ 1492{
… …
926 if (expect_true (!anfd->reify)) 1538 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1539 fd_event_nocheck (EV_A_ fd, revents);
928} 1540}
929 1541
930void 1542void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1544{
933 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
935} 1547}
936 1548
… …
939inline_size void 1551inline_size void
940fd_reify (EV_P) 1552fd_reify (EV_P)
941{ 1553{
942 int i; 1554 int i;
943 1555
1556#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1557 for (i = 0; i < fdchangecnt; ++i)
1558 {
1559 int fd = fdchanges [i];
1560 ANFD *anfd = anfds + fd;
1561
1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1563 {
1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1565
1566 if (handle != anfd->handle)
1567 {
1568 unsigned long arg;
1569
1570 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1571
1572 /* handle changed, but fd didn't - we need to do it in two steps */
1573 backend_modify (EV_A_ fd, anfd->events, 0);
1574 anfd->events = 0;
1575 anfd->handle = handle;
1576 }
1577 }
1578 }
1579#endif
1580
944 for (i = 0; i < fdchangecnt; ++i) 1581 for (i = 0; i < fdchangecnt; ++i)
945 { 1582 {
946 int fd = fdchanges [i]; 1583 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1584 ANFD *anfd = anfds + fd;
948 ev_io *w; 1585 ev_io *w;
949 1586
950 unsigned char events = 0; 1587 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify;
951 1589
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1590 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1591
955#if EV_SELECT_IS_WINSOCKET 1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1593 {
958 unsigned long arg; 1594 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1595
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1596 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1597 anfd->events |= (unsigned char)w->events;
1598
1599 if (o_events != anfd->events)
1600 o_reify = EV__IOFDSET; /* actually |= */
961 } 1601 }
962#endif
963 1602
964 { 1603 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1604 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1605 }
975 1606
976 fdchangecnt = 0; 1607 fdchangecnt = 0;
977} 1608}
978 1609
… …
990 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
991 } 1622 }
992} 1623}
993 1624
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1626inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
997{ 1628{
998 ev_io *w; 1629 ev_io *w;
999 1630
1000 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1635 }
1005} 1636}
1006 1637
1007/* check whether the given fd is actually valid, for error recovery */ 1638/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1639inline_size int ecb_cold
1009fd_valid (int fd) 1640fd_valid (int fd)
1010{ 1641{
1011#ifdef _WIN32 1642#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1644#else
1014 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
1015#endif 1646#endif
1016} 1647}
1017 1648
1018/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
1019static void noinline 1650static void noinline ecb_cold
1020fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
1021{ 1652{
1022 int fd; 1653 int fd;
1023 1654
1024 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
1028} 1659}
1029 1660
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1662static void noinline ecb_cold
1032fd_enomem (EV_P) 1663fd_enomem (EV_P)
1033{ 1664{
1034 int fd; 1665 int fd;
1035 1666
1036 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
… …
1071} 1702}
1072 1703
1073/*****************************************************************************/ 1704/*****************************************************************************/
1074 1705
1075/* 1706/*
1076 * the heap functions want a real array index. array index 0 uis guaranteed to not 1707 * the heap functions want a real array index. array index 0 is guaranteed to not
1077 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1708 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1078 * the branching factor of the d-tree. 1709 * the branching factor of the d-tree.
1079 */ 1710 */
1080 1711
1081/* 1712/*
… …
1231 1862
1232/*****************************************************************************/ 1863/*****************************************************************************/
1233 1864
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1866
1236static void noinline 1867static void noinline ecb_cold
1237evpipe_init (EV_P) 1868evpipe_init (EV_P)
1238{ 1869{
1239 if (!ev_is_active (&pipe_w)) 1870 if (!ev_is_active (&pipe_w))
1240 { 1871 {
1872 int fds [2];
1873
1241# if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1876 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 1877 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 1878 fds [1] = eventfd (0, 0);
1245 1879
1246 if (evfd >= 0) 1880 if (fds [1] < 0)
1881# endif
1247 { 1882 {
1883 while (pipe (fds))
1884 ev_syserr ("(libev) error creating signal/async pipe");
1885
1886 fd_intern (fds [0]);
1887 }
1888
1889 fd_intern (fds [1]);
1890
1248 evpipe [0] = -1; 1891 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 1892
1250 ev_io_set (&pipe_w, evfd, EV_READ); 1893 if (evpipe [1] < 0)
1894 evpipe [1] = fds [1]; /* first call, set write fd */
1895 else
1896 {
1897 /* on subsequent calls, do not change evpipe [1] */
1898 /* so that evpipe_write can always rely on its value. */
1899 /* this branch does not do anything sensible on windows, */
1900 /* so must not be executed on windows */
1901
1902 dup2 (fds [1], evpipe [1]);
1903 close (fds [1]);
1904 }
1905
1906 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1907 ev_io_start (EV_A_ &pipe_w);
1908 ev_unref (EV_A); /* watcher should not keep loop alive */
1909 }
1910}
1911
1912inline_speed void
1913evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1914{
1915 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1916
1917 if (expect_true (*flag))
1918 return;
1919
1920 *flag = 1;
1921 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1922
1923 pipe_write_skipped = 1;
1924
1925 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1926
1927 if (pipe_write_wanted)
1928 {
1929 int old_errno;
1930
1931 pipe_write_skipped = 0;
1932 ECB_MEMORY_FENCE_RELEASE;
1933
1934 old_errno = errno; /* save errno because write will clobber it */
1935
1936#if EV_USE_EVENTFD
1937 if (evpipe [0] < 0)
1938 {
1939 uint64_t counter = 1;
1940 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 1941 }
1252 else 1942 else
1253# endif 1943#endif
1254 { 1944 {
1255 while (pipe (evpipe)) 1945#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 1946 WSABUF buf;
1257 1947 DWORD sent;
1258 fd_intern (evpipe [0]); 1948 buf.buf = &buf;
1259 fd_intern (evpipe [1]); 1949 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 1950 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1951#else
1952 write (evpipe [1], &(evpipe [1]), 1);
1953#endif
1261 } 1954 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 write (evpipe [1], &dummy, 1);
1287 1955
1288 errno = old_errno; 1956 errno = old_errno;
1289 } 1957 }
1290} 1958}
1291 1959
… …
1294static void 1962static void
1295pipecb (EV_P_ ev_io *iow, int revents) 1963pipecb (EV_P_ ev_io *iow, int revents)
1296{ 1964{
1297 int i; 1965 int i;
1298 1966
1967 if (revents & EV_READ)
1968 {
1299#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1300 if (evfd >= 0) 1970 if (evpipe [0] < 0)
1301 { 1971 {
1302 uint64_t counter; 1972 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 1973 read (evpipe [1], &counter, sizeof (uint64_t));
1304 } 1974 }
1305 else 1975 else
1306#endif 1976#endif
1307 { 1977 {
1308 char dummy; 1978 char dummy[4];
1979#ifdef _WIN32
1980 WSABUF buf;
1981 DWORD recvd;
1982 DWORD flags = 0;
1983 buf.buf = dummy;
1984 buf.len = sizeof (dummy);
1985 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1986#else
1309 read (evpipe [0], &dummy, 1); 1987 read (evpipe [0], &dummy, sizeof (dummy));
1988#endif
1989 }
1310 } 1990 }
1311 1991
1992 pipe_write_skipped = 0;
1993
1994 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1995
1996#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 1997 if (sig_pending)
1313 { 1998 {
1314 sig_pending = 0; 1999 sig_pending = 0;
2000
2001 ECB_MEMORY_FENCE;
1315 2002
1316 for (i = EV_NSIG - 1; i--; ) 2003 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 2004 if (expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 2005 ev_feed_signal_event (EV_A_ i + 1);
1319 } 2006 }
2007#endif
1320 2008
1321#if EV_ASYNC_ENABLE 2009#if EV_ASYNC_ENABLE
1322 if (async_pending) 2010 if (async_pending)
1323 { 2011 {
1324 async_pending = 0; 2012 async_pending = 0;
2013
2014 ECB_MEMORY_FENCE;
1325 2015
1326 for (i = asynccnt; i--; ) 2016 for (i = asynccnt; i--; )
1327 if (asyncs [i]->sent) 2017 if (asyncs [i]->sent)
1328 { 2018 {
1329 asyncs [i]->sent = 0; 2019 asyncs [i]->sent = 0;
2020 ECB_MEMORY_FENCE_RELEASE;
1330 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2021 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1331 } 2022 }
1332 } 2023 }
1333#endif 2024#endif
1334} 2025}
1335 2026
1336/*****************************************************************************/ 2027/*****************************************************************************/
1337 2028
2029void
2030ev_feed_signal (int signum) EV_THROW
2031{
2032#if EV_MULTIPLICITY
2033 ECB_MEMORY_FENCE_ACQUIRE;
2034 EV_P = signals [signum - 1].loop;
2035
2036 if (!EV_A)
2037 return;
2038#endif
2039
2040 signals [signum - 1].pending = 1;
2041 evpipe_write (EV_A_ &sig_pending);
2042}
2043
1338static void 2044static void
1339ev_sighandler (int signum) 2045ev_sighandler (int signum)
1340{ 2046{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 2047#ifdef _WIN32
1346 signal (signum, ev_sighandler); 2048 signal (signum, ev_sighandler);
1347#endif 2049#endif
1348 2050
1349 signals [signum - 1].pending = 1; 2051 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 2052}
1352 2053
1353void noinline 2054void noinline
1354ev_feed_signal_event (EV_P_ int signum) 2055ev_feed_signal_event (EV_P_ int signum) EV_THROW
1355{ 2056{
1356 WL w; 2057 WL w;
1357 2058
1358 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2059 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1359 return; 2060 return;
1360 2061
1361 --signum; 2062 --signum;
1362 2063
1363#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
… …
1367 if (expect_false (signals [signum].loop != EV_A)) 2068 if (expect_false (signals [signum].loop != EV_A))
1368 return; 2069 return;
1369#endif 2070#endif
1370 2071
1371 signals [signum].pending = 0; 2072 signals [signum].pending = 0;
2073 ECB_MEMORY_FENCE_RELEASE;
1372 2074
1373 for (w = signals [signum].head; w; w = w->next) 2075 for (w = signals [signum].head; w; w = w->next)
1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2076 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1375} 2077}
1376 2078
… …
1455 2157
1456#endif 2158#endif
1457 2159
1458/*****************************************************************************/ 2160/*****************************************************************************/
1459 2161
2162#if EV_USE_IOCP
2163# include "ev_iocp.c"
2164#endif
1460#if EV_USE_PORT 2165#if EV_USE_PORT
1461# include "ev_port.c" 2166# include "ev_port.c"
1462#endif 2167#endif
1463#if EV_USE_KQUEUE 2168#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2169# include "ev_kqueue.c"
… …
1471#endif 2176#endif
1472#if EV_USE_SELECT 2177#if EV_USE_SELECT
1473# include "ev_select.c" 2178# include "ev_select.c"
1474#endif 2179#endif
1475 2180
1476int 2181int ecb_cold
1477ev_version_major (void) 2182ev_version_major (void) EV_THROW
1478{ 2183{
1479 return EV_VERSION_MAJOR; 2184 return EV_VERSION_MAJOR;
1480} 2185}
1481 2186
1482int 2187int ecb_cold
1483ev_version_minor (void) 2188ev_version_minor (void) EV_THROW
1484{ 2189{
1485 return EV_VERSION_MINOR; 2190 return EV_VERSION_MINOR;
1486} 2191}
1487 2192
1488/* return true if we are running with elevated privileges and should ignore env variables */ 2193/* return true if we are running with elevated privileges and should ignore env variables */
1489int inline_size 2194int inline_size ecb_cold
1490enable_secure (void) 2195enable_secure (void)
1491{ 2196{
1492#ifdef _WIN32 2197#ifdef _WIN32
1493 return 0; 2198 return 0;
1494#else 2199#else
1495 return getuid () != geteuid () 2200 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2201 || getgid () != getegid ();
1497#endif 2202#endif
1498} 2203}
1499 2204
1500unsigned int 2205unsigned int ecb_cold
1501ev_supported_backends (void) 2206ev_supported_backends (void) EV_THROW
1502{ 2207{
1503 unsigned int flags = 0; 2208 unsigned int flags = 0;
1504 2209
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2210 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1506 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2211 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2214 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1510 2215
1511 return flags; 2216 return flags;
1512} 2217}
1513 2218
1514unsigned int 2219unsigned int ecb_cold
1515ev_recommended_backends (void) 2220ev_recommended_backends (void) EV_THROW
1516{ 2221{
1517 unsigned int flags = ev_supported_backends (); 2222 unsigned int flags = ev_supported_backends ();
1518 2223
1519#ifndef __NetBSD__ 2224#ifndef __NetBSD__
1520 /* kqueue is borked on everything but netbsd apparently */ 2225 /* kqueue is borked on everything but netbsd apparently */
… …
1531#endif 2236#endif
1532 2237
1533 return flags; 2238 return flags;
1534} 2239}
1535 2240
2241unsigned int ecb_cold
2242ev_embeddable_backends (void) EV_THROW
2243{
2244 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2245
2246 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2247 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2248 flags &= ~EVBACKEND_EPOLL;
2249
2250 return flags;
2251}
2252
1536unsigned int 2253unsigned int
1537ev_embeddable_backends (void)
1538{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */
1543 flags &= ~EVBACKEND_EPOLL;
1544
1545 return flags;
1546}
1547
1548unsigned int
1549ev_backend (EV_P) 2254ev_backend (EV_P) EV_THROW
1550{ 2255{
1551 return backend; 2256 return backend;
1552} 2257}
1553 2258
1554#if EV_FEATURE_API 2259#if EV_FEATURE_API
1555unsigned int 2260unsigned int
1556ev_iteration (EV_P) 2261ev_iteration (EV_P) EV_THROW
1557{ 2262{
1558 return loop_count; 2263 return loop_count;
1559} 2264}
1560 2265
1561unsigned int 2266unsigned int
1562ev_depth (EV_P) 2267ev_depth (EV_P) EV_THROW
1563{ 2268{
1564 return loop_depth; 2269 return loop_depth;
1565} 2270}
1566 2271
1567void 2272void
1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1569{ 2274{
1570 io_blocktime = interval; 2275 io_blocktime = interval;
1571} 2276}
1572 2277
1573void 2278void
1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2280{
1576 timeout_blocktime = interval; 2281 timeout_blocktime = interval;
1577} 2282}
1578 2283
1579void 2284void
1580ev_set_userdata (EV_P_ void *data) 2285ev_set_userdata (EV_P_ void *data) EV_THROW
1581{ 2286{
1582 userdata = data; 2287 userdata = data;
1583} 2288}
1584 2289
1585void * 2290void *
1586ev_userdata (EV_P) 2291ev_userdata (EV_P) EV_THROW
1587{ 2292{
1588 return userdata; 2293 return userdata;
1589} 2294}
1590 2295
2296void
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2297ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1592{ 2298{
1593 invoke_cb = invoke_pending_cb; 2299 invoke_cb = invoke_pending_cb;
1594} 2300}
1595 2301
2302void
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2303ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1597{ 2304{
1598 release_cb = release; 2305 release_cb = release;
1599 acquire_cb = acquire; 2306 acquire_cb = acquire;
1600} 2307}
1601#endif 2308#endif
1602 2309
1603/* initialise a loop structure, must be zero-initialised */ 2310/* initialise a loop structure, must be zero-initialised */
1604static void noinline 2311static void noinline ecb_cold
1605loop_init (EV_P_ unsigned int flags) 2312loop_init (EV_P_ unsigned int flags) EV_THROW
1606{ 2313{
1607 if (!backend) 2314 if (!backend)
1608 { 2315 {
2316 origflags = flags;
2317
1609#if EV_USE_REALTIME 2318#if EV_USE_REALTIME
1610 if (!have_realtime) 2319 if (!have_realtime)
1611 { 2320 {
1612 struct timespec ts; 2321 struct timespec ts;
1613 2322
… …
1635 if (!(flags & EVFLAG_NOENV) 2344 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 2345 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 2346 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 2347 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 2348
1640 ev_rt_now = ev_time (); 2349 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 2350 mn_now = get_clock ();
1642 now_floor = mn_now; 2351 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 2352 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 2353#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 2354 invoke_cb = ev_invoke_pending;
1646#endif 2355#endif
1647 2356
1648 io_blocktime = 0.; 2357 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 2358 timeout_blocktime = 0.;
1650 backend = 0; 2359 backend = 0;
1651 backend_fd = -1; 2360 backend_fd = -1;
1652 sig_pending = 0; 2361 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 2362#if EV_ASYNC_ENABLE
1654 async_pending = 0; 2363 async_pending = 0;
1655#endif 2364#endif
2365 pipe_write_skipped = 0;
2366 pipe_write_wanted = 0;
2367 evpipe [0] = -1;
2368 evpipe [1] = -1;
1656#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2370 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 2371#endif
1659#if EV_USE_SIGNALFD 2372#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2373 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 2374#endif
1662 2375
1663 if (!(flags & 0x0000ffffU)) 2376 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 2377 flags |= ev_recommended_backends ();
1665 2378
2379#if EV_USE_IOCP
2380 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2381#endif
1666#if EV_USE_PORT 2382#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2383 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 2384#endif
1669#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2386 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 2403#endif
1688 } 2404 }
1689} 2405}
1690 2406
1691/* free up a loop structure */ 2407/* free up a loop structure */
1692static void noinline 2408void ecb_cold
1693loop_destroy (EV_P) 2409ev_loop_destroy (EV_P)
1694{ 2410{
1695 int i; 2411 int i;
2412
2413#if EV_MULTIPLICITY
2414 /* mimic free (0) */
2415 if (!EV_A)
2416 return;
2417#endif
2418
2419#if EV_CLEANUP_ENABLE
2420 /* queue cleanup watchers (and execute them) */
2421 if (expect_false (cleanupcnt))
2422 {
2423 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2424 EV_INVOKE_PENDING;
2425 }
2426#endif
2427
2428#if EV_CHILD_ENABLE
2429 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2430 {
2431 ev_ref (EV_A); /* child watcher */
2432 ev_signal_stop (EV_A_ &childev);
2433 }
2434#endif
1696 2435
1697 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1698 { 2437 {
1699 /*ev_ref (EV_A);*/ 2438 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 2439 /*ev_io_stop (EV_A_ &pipe_w);*/
1701 2440
1702#if EV_USE_EVENTFD
1703 if (evfd >= 0)
1704 close (evfd);
1705#endif
1706
1707 if (evpipe [0] >= 0)
1708 {
1709 EV_WIN32_CLOSE_FD (evpipe [0]); 2441 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1710 EV_WIN32_CLOSE_FD (evpipe [1]); 2442 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1711 }
1712 } 2443 }
1713 2444
1714#if EV_USE_SIGNALFD 2445#if EV_USE_SIGNALFD
1715 if (ev_is_active (&sigfd_w)) 2446 if (ev_is_active (&sigfd_w))
1716 close (sigfd); 2447 close (sigfd);
… …
1722#endif 2453#endif
1723 2454
1724 if (backend_fd >= 0) 2455 if (backend_fd >= 0)
1725 close (backend_fd); 2456 close (backend_fd);
1726 2457
2458#if EV_USE_IOCP
2459 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2460#endif
1727#if EV_USE_PORT 2461#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2462 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 2463#endif
1730#if EV_USE_KQUEUE 2464#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2465 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 2492 array_free (periodic, EMPTY);
1759#endif 2493#endif
1760#if EV_FORK_ENABLE 2494#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 2495 array_free (fork, EMPTY);
1762#endif 2496#endif
2497#if EV_CLEANUP_ENABLE
2498 array_free (cleanup, EMPTY);
2499#endif
1763 array_free (prepare, EMPTY); 2500 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 2501 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 2502#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 2503 array_free (async, EMPTY);
1767#endif 2504#endif
1768 2505
1769 backend = 0; 2506 backend = 0;
2507
2508#if EV_MULTIPLICITY
2509 if (ev_is_default_loop (EV_A))
2510#endif
2511 ev_default_loop_ptr = 0;
2512#if EV_MULTIPLICITY
2513 else
2514 ev_free (EV_A);
2515#endif
1770} 2516}
1771 2517
1772#if EV_USE_INOTIFY 2518#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 2519inline_size void infy_fork (EV_P);
1774#endif 2520#endif
… …
1787#endif 2533#endif
1788#if EV_USE_INOTIFY 2534#if EV_USE_INOTIFY
1789 infy_fork (EV_A); 2535 infy_fork (EV_A);
1790#endif 2536#endif
1791 2537
2538#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1792 if (ev_is_active (&pipe_w)) 2539 if (ev_is_active (&pipe_w))
1793 { 2540 {
1794 /* this "locks" the handlers against writing to the pipe */ 2541 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1795 /* while we modify the fd vars */
1796 sig_pending = 1;
1797#if EV_ASYNC_ENABLE
1798 async_pending = 1;
1799#endif
1800 2542
1801 ev_ref (EV_A); 2543 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 2544 ev_io_stop (EV_A_ &pipe_w);
1803 2545
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0) 2546 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 2548
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1816 evpipe_init (EV_A); 2549 evpipe_init (EV_A);
1817 /* now iterate over everything, in case we missed something */ 2550 /* iterate over everything, in case we missed something before */
1818 pipecb (EV_A_ &pipe_w, EV_READ); 2551 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1819#endif
1820 } 2552 }
2553#endif
1821 2554
1822 postfork = 0; 2555 postfork = 0;
1823} 2556}
1824 2557
1825#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1826 2559
1827struct ev_loop * 2560struct ev_loop * ecb_cold
1828ev_loop_new (unsigned int flags) 2561ev_loop_new (unsigned int flags) EV_THROW
1829{ 2562{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2563 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 2564
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 2565 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 2566 loop_init (EV_A_ flags);
1834 2567
1835 if (ev_backend (EV_A)) 2568 if (ev_backend (EV_A))
1836 return EV_A; 2569 return EV_A;
1837 2570
2571 ev_free (EV_A);
1838 return 0; 2572 return 0;
1839} 2573}
1840 2574
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 2575#endif /* multiplicity */
1854 2576
1855#if EV_VERIFY 2577#if EV_VERIFY
1856static void noinline 2578static void noinline ecb_cold
1857verify_watcher (EV_P_ W w) 2579verify_watcher (EV_P_ W w)
1858{ 2580{
1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2581 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1860 2582
1861 if (w->pending) 2583 if (w->pending)
1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2584 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1863} 2585}
1864 2586
1865static void noinline 2587static void noinline ecb_cold
1866verify_heap (EV_P_ ANHE *heap, int N) 2588verify_heap (EV_P_ ANHE *heap, int N)
1867{ 2589{
1868 int i; 2590 int i;
1869 2591
1870 for (i = HEAP0; i < N + HEAP0; ++i) 2592 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 2597
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2598 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 2599 }
1878} 2600}
1879 2601
1880static void noinline 2602static void noinline ecb_cold
1881array_verify (EV_P_ W *ws, int cnt) 2603array_verify (EV_P_ W *ws, int cnt)
1882{ 2604{
1883 while (cnt--) 2605 while (cnt--)
1884 { 2606 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2607 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 2609 }
1888} 2610}
1889#endif 2611#endif
1890 2612
1891#if EV_FEATURE_API 2613#if EV_FEATURE_API
1892void 2614void ecb_cold
1893ev_verify (EV_P) 2615ev_verify (EV_P) EV_THROW
1894{ 2616{
1895#if EV_VERIFY 2617#if EV_VERIFY
1896 int i; 2618 int i;
1897 WL w; 2619 WL w, w2;
1898 2620
1899 assert (activecnt >= -1); 2621 assert (activecnt >= -1);
1900 2622
1901 assert (fdchangemax >= fdchangecnt); 2623 assert (fdchangemax >= fdchangecnt);
1902 for (i = 0; i < fdchangecnt; ++i) 2624 for (i = 0; i < fdchangecnt; ++i)
1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2625 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1904 2626
1905 assert (anfdmax >= 0); 2627 assert (anfdmax >= 0);
1906 for (i = 0; i < anfdmax; ++i) 2628 for (i = 0; i < anfdmax; ++i)
2629 {
2630 int j = 0;
2631
1907 for (w = anfds [i].head; w; w = w->next) 2632 for (w = w2 = anfds [i].head; w; w = w->next)
1908 { 2633 {
1909 verify_watcher (EV_A_ (W)w); 2634 verify_watcher (EV_A_ (W)w);
2635
2636 if (j++ & 1)
2637 {
2638 assert (("libev: io watcher list contains a loop", w != w2));
2639 w2 = w2->next;
2640 }
2641
1910 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2642 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1911 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2643 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1912 } 2644 }
2645 }
1913 2646
1914 assert (timermax >= timercnt); 2647 assert (timermax >= timercnt);
1915 verify_heap (EV_A_ timers, timercnt); 2648 verify_heap (EV_A_ timers, timercnt);
1916 2649
1917#if EV_PERIODIC_ENABLE 2650#if EV_PERIODIC_ENABLE
… …
1932#if EV_FORK_ENABLE 2665#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2666 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2667 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2668#endif
1936 2669
2670#if EV_CLEANUP_ENABLE
2671 assert (cleanupmax >= cleanupcnt);
2672 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2673#endif
2674
1937#if EV_ASYNC_ENABLE 2675#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2676 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2677 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2678#endif
1941 2679
… …
1958#endif 2696#endif
1959} 2697}
1960#endif 2698#endif
1961 2699
1962#if EV_MULTIPLICITY 2700#if EV_MULTIPLICITY
1963struct ev_loop * 2701struct ev_loop * ecb_cold
1964ev_default_loop_init (unsigned int flags)
1965#else 2702#else
1966int 2703int
2704#endif
1967ev_default_loop (unsigned int flags) 2705ev_default_loop (unsigned int flags) EV_THROW
1968#endif
1969{ 2706{
1970 if (!ev_default_loop_ptr) 2707 if (!ev_default_loop_ptr)
1971 { 2708 {
1972#if EV_MULTIPLICITY 2709#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2710 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2729
1993 return ev_default_loop_ptr; 2730 return ev_default_loop_ptr;
1994} 2731}
1995 2732
1996void 2733void
1997ev_default_destroy (void) 2734ev_loop_fork (EV_P) EV_THROW
1998{ 2735{
1999#if EV_MULTIPLICITY 2736 postfork = 1;
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */
2021} 2737}
2022 2738
2023/*****************************************************************************/ 2739/*****************************************************************************/
2024 2740
2025void 2741void
… …
2027{ 2743{
2028 EV_CB_INVOKE ((W)w, revents); 2744 EV_CB_INVOKE ((W)w, revents);
2029} 2745}
2030 2746
2031unsigned int 2747unsigned int
2032ev_pending_count (EV_P) 2748ev_pending_count (EV_P) EV_THROW
2033{ 2749{
2034 int pri; 2750 int pri;
2035 unsigned int count = 0; 2751 unsigned int count = 0;
2036 2752
2037 for (pri = NUMPRI; pri--; ) 2753 for (pri = NUMPRI; pri--; )
… …
2041} 2757}
2042 2758
2043void noinline 2759void noinline
2044ev_invoke_pending (EV_P) 2760ev_invoke_pending (EV_P)
2045{ 2761{
2046 int pri; 2762 pendingpri = NUMPRI;
2047 2763
2048 for (pri = NUMPRI; pri--; ) 2764 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2765 {
2766 --pendingpri;
2767
2049 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2050 { 2769 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2052 2771
2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
2055
2056 p->w->pending = 0; 2772 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2059 } 2775 }
2776 }
2060} 2777}
2061 2778
2062#if EV_IDLE_ENABLE 2779#if EV_IDLE_ENABLE
2063/* make idle watchers pending. this handles the "call-idle */ 2780/* make idle watchers pending. this handles the "call-idle */
2064/* only when higher priorities are idle" logic */ 2781/* only when higher priorities are idle" logic */
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 2838 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 2839 }
2123} 2840}
2124 2841
2125#if EV_PERIODIC_ENABLE 2842#if EV_PERIODIC_ENABLE
2843
2844static void noinline
2845periodic_recalc (EV_P_ ev_periodic *w)
2846{
2847 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2848 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2849
2850 /* the above almost always errs on the low side */
2851 while (at <= ev_rt_now)
2852 {
2853 ev_tstamp nat = at + w->interval;
2854
2855 /* when resolution fails us, we use ev_rt_now */
2856 if (expect_false (nat == at))
2857 {
2858 at = ev_rt_now;
2859 break;
2860 }
2861
2862 at = nat;
2863 }
2864
2865 ev_at (w) = at;
2866}
2867
2126/* make periodics pending */ 2868/* make periodics pending */
2127inline_size void 2869inline_size void
2128periodics_reify (EV_P) 2870periodics_reify (EV_P)
2129{ 2871{
2130 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2131 2873
2132 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2133 { 2875 {
2134 int feed_count = 0;
2135
2136 do 2876 do
2137 { 2877 {
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2878 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2139 2879
2140 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2880 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2149 ANHE_at_cache (periodics [HEAP0]); 2889 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 2890 downheap (periodics, periodiccnt, HEAP0);
2151 } 2891 }
2152 else if (w->interval) 2892 else if (w->interval)
2153 { 2893 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2894 periodic_recalc (EV_A_ w);
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]); 2895 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 2896 downheap (periodics, periodiccnt, HEAP0);
2170 } 2897 }
2171 else 2898 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2179 feed_reverse_done (EV_A_ EV_PERIODIC); 2906 feed_reverse_done (EV_A_ EV_PERIODIC);
2180 } 2907 }
2181} 2908}
2182 2909
2183/* simply recalculate all periodics */ 2910/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2911/* TODO: maybe ensure that at least one event happens when jumping forward? */
2185static void noinline 2912static void noinline ecb_cold
2186periodics_reschedule (EV_P) 2913periodics_reschedule (EV_P)
2187{ 2914{
2188 int i; 2915 int i;
2189 2916
2190 /* adjust periodics after time jump */ 2917 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 2921
2195 if (w->reschedule_cb) 2922 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 2924 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2925 periodic_recalc (EV_A_ w);
2199 2926
2200 ANHE_at_cache (periodics [i]); 2927 ANHE_at_cache (periodics [i]);
2201 } 2928 }
2202 2929
2203 reheap (periodics, periodiccnt); 2930 reheap (periodics, periodiccnt);
2204} 2931}
2205#endif 2932#endif
2206 2933
2207/* adjust all timers by a given offset */ 2934/* adjust all timers by a given offset */
2208static void noinline 2935static void noinline ecb_cold
2209timers_reschedule (EV_P_ ev_tstamp adjust) 2936timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 2937{
2211 int i; 2938 int i;
2212 2939
2213 for (i = 0; i < timercnt; ++i) 2940 for (i = 0; i < timercnt; ++i)
… …
2250 * doesn't hurt either as we only do this on time-jumps or 2977 * doesn't hurt either as we only do this on time-jumps or
2251 * in the unlikely event of having been preempted here. 2978 * in the unlikely event of having been preempted here.
2252 */ 2979 */
2253 for (i = 4; --i; ) 2980 for (i = 4; --i; )
2254 { 2981 {
2982 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 2983 rtmn_diff = ev_rt_now - mn_now;
2256 2984
2985 diff = odiff - rtmn_diff;
2986
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2987 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258 return; /* all is well */ 2988 return; /* all is well */
2259 2989
2260 ev_rt_now = ev_time (); 2990 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 2991 mn_now = get_clock ();
2262 now_floor = mn_now; 2992 now_floor = mn_now;
… …
2284 3014
2285 mn_now = ev_rt_now; 3015 mn_now = ev_rt_now;
2286 } 3016 }
2287} 3017}
2288 3018
2289void 3019int
2290ev_loop (EV_P_ int flags) 3020ev_run (EV_P_ int flags)
2291{ 3021{
2292#if EV_FEATURE_API 3022#if EV_FEATURE_API
2293 ++loop_depth; 3023 ++loop_depth;
2294#endif 3024#endif
2295 3025
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3026 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 3027
2298 loop_done = EVUNLOOP_CANCEL; 3028 loop_done = EVBREAK_CANCEL;
2299 3029
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3030 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 3031
2302 do 3032 do
2303 { 3033 {
… …
2346 /* calculate blocking time */ 3076 /* calculate blocking time */
2347 { 3077 {
2348 ev_tstamp waittime = 0.; 3078 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 3079 ev_tstamp sleeptime = 0.;
2350 3080
3081 /* remember old timestamp for io_blocktime calculation */
3082 ev_tstamp prev_mn_now = mn_now;
3083
3084 /* update time to cancel out callback processing overhead */
3085 time_update (EV_A_ 1e100);
3086
3087 /* from now on, we want a pipe-wake-up */
3088 pipe_write_wanted = 1;
3089
3090 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3091
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3092 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 3093 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 3094 waittime = MAX_BLOCKTIME;
2360 3095
2361 if (timercnt) 3096 if (timercnt)
2362 { 3097 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3098 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 3099 if (waittime > to) waittime = to;
2365 } 3100 }
2366 3101
2367#if EV_PERIODIC_ENABLE 3102#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 3103 if (periodiccnt)
2369 { 3104 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3105 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3106 if (waittime > to) waittime = to;
2372 } 3107 }
2373#endif 3108#endif
2374 3109
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3110 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3111 if (expect_false (waittime < timeout_blocktime))
2377 waittime = timeout_blocktime; 3112 waittime = timeout_blocktime;
3113
3114 /* at this point, we NEED to wait, so we have to ensure */
3115 /* to pass a minimum nonzero value to the backend */
3116 if (expect_false (waittime < backend_mintime))
3117 waittime = backend_mintime;
2378 3118
2379 /* extra check because io_blocktime is commonly 0 */ 3119 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3120 if (expect_false (io_blocktime))
2381 { 3121 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3122 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3123
2384 if (sleeptime > waittime - backend_fudge) 3124 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3125 sleeptime = waittime - backend_mintime;
2386 3126
2387 if (expect_true (sleeptime > 0.)) 3127 if (expect_true (sleeptime > 0.))
2388 { 3128 {
2389 ev_sleep (sleeptime); 3129 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3130 waittime -= sleeptime;
… …
2393 } 3133 }
2394 3134
2395#if EV_FEATURE_API 3135#if EV_FEATURE_API
2396 ++loop_count; 3136 ++loop_count;
2397#endif 3137#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3138 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 3139 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3140 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3141
3142 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3143
3144 ECB_MEMORY_FENCE_ACQUIRE;
3145 if (pipe_write_skipped)
3146 {
3147 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3148 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3149 }
3150
2401 3151
2402 /* update ev_rt_now, do magic */ 3152 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 3153 time_update (EV_A_ waittime + sleeptime);
2404 } 3154 }
2405 3155
… …
2423 EV_INVOKE_PENDING; 3173 EV_INVOKE_PENDING;
2424 } 3174 }
2425 while (expect_true ( 3175 while (expect_true (
2426 activecnt 3176 activecnt
2427 && !loop_done 3177 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3178 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 3179 ));
2430 3180
2431 if (loop_done == EVUNLOOP_ONE) 3181 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 3182 loop_done = EVBREAK_CANCEL;
2433 3183
2434#if EV_FEATURE_API 3184#if EV_FEATURE_API
2435 --loop_depth; 3185 --loop_depth;
2436#endif 3186#endif
3187
3188 return activecnt;
2437} 3189}
2438 3190
2439void 3191void
2440ev_unloop (EV_P_ int how) 3192ev_break (EV_P_ int how) EV_THROW
2441{ 3193{
2442 loop_done = how; 3194 loop_done = how;
2443} 3195}
2444 3196
2445void 3197void
2446ev_ref (EV_P) 3198ev_ref (EV_P) EV_THROW
2447{ 3199{
2448 ++activecnt; 3200 ++activecnt;
2449} 3201}
2450 3202
2451void 3203void
2452ev_unref (EV_P) 3204ev_unref (EV_P) EV_THROW
2453{ 3205{
2454 --activecnt; 3206 --activecnt;
2455} 3207}
2456 3208
2457void 3209void
2458ev_now_update (EV_P) 3210ev_now_update (EV_P) EV_THROW
2459{ 3211{
2460 time_update (EV_A_ 1e100); 3212 time_update (EV_A_ 1e100);
2461} 3213}
2462 3214
2463void 3215void
2464ev_suspend (EV_P) 3216ev_suspend (EV_P) EV_THROW
2465{ 3217{
2466 ev_now_update (EV_A); 3218 ev_now_update (EV_A);
2467} 3219}
2468 3220
2469void 3221void
2470ev_resume (EV_P) 3222ev_resume (EV_P) EV_THROW
2471{ 3223{
2472 ev_tstamp mn_prev = mn_now; 3224 ev_tstamp mn_prev = mn_now;
2473 3225
2474 ev_now_update (EV_A); 3226 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev); 3227 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2514 w->pending = 0; 3266 w->pending = 0;
2515 } 3267 }
2516} 3268}
2517 3269
2518int 3270int
2519ev_clear_pending (EV_P_ void *w) 3271ev_clear_pending (EV_P_ void *w) EV_THROW
2520{ 3272{
2521 W w_ = (W)w; 3273 W w_ = (W)w;
2522 int pending = w_->pending; 3274 int pending = w_->pending;
2523 3275
2524 if (expect_true (pending)) 3276 if (expect_true (pending))
… …
2557} 3309}
2558 3310
2559/*****************************************************************************/ 3311/*****************************************************************************/
2560 3312
2561void noinline 3313void noinline
2562ev_io_start (EV_P_ ev_io *w) 3314ev_io_start (EV_P_ ev_io *w) EV_THROW
2563{ 3315{
2564 int fd = w->fd; 3316 int fd = w->fd;
2565 3317
2566 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2567 return; 3319 return;
… …
2573 3325
2574 ev_start (EV_A_ (W)w, 1); 3326 ev_start (EV_A_ (W)w, 1);
2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3327 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2576 wlist_add (&anfds[fd].head, (WL)w); 3328 wlist_add (&anfds[fd].head, (WL)w);
2577 3329
3330 /* common bug, apparently */
3331 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3332
2578 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3333 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2579 w->events &= ~EV__IOFDSET; 3334 w->events &= ~EV__IOFDSET;
2580 3335
2581 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2582} 3337}
2583 3338
2584void noinline 3339void noinline
2585ev_io_stop (EV_P_ ev_io *w) 3340ev_io_stop (EV_P_ ev_io *w) EV_THROW
2586{ 3341{
2587 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2588 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2589 return; 3344 return;
2590 3345
… …
2593 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2594 3349
2595 wlist_del (&anfds[w->fd].head, (WL)w); 3350 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 3351 ev_stop (EV_A_ (W)w);
2597 3352
2598 fd_change (EV_A_ w->fd, 1); 3353 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 3354
2600 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2601} 3356}
2602 3357
2603void noinline 3358void noinline
2604ev_timer_start (EV_P_ ev_timer *w) 3359ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2605{ 3360{
2606 if (expect_false (ev_is_active (w))) 3361 if (expect_false (ev_is_active (w)))
2607 return; 3362 return;
2608 3363
2609 ev_at (w) += mn_now; 3364 ev_at (w) += mn_now;
… …
2623 3378
2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3379 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2625} 3380}
2626 3381
2627void noinline 3382void noinline
2628ev_timer_stop (EV_P_ ev_timer *w) 3383ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2629{ 3384{
2630 clear_pending (EV_A_ (W)w); 3385 clear_pending (EV_A_ (W)w);
2631 if (expect_false (!ev_is_active (w))) 3386 if (expect_false (!ev_is_active (w)))
2632 return; 3387 return;
2633 3388
… …
2653 3408
2654 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2655} 3410}
2656 3411
2657void noinline 3412void noinline
2658ev_timer_again (EV_P_ ev_timer *w) 3413ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2659{ 3414{
2660 EV_FREQUENT_CHECK; 3415 EV_FREQUENT_CHECK;
3416
3417 clear_pending (EV_A_ (W)w);
2661 3418
2662 if (ev_is_active (w)) 3419 if (ev_is_active (w))
2663 { 3420 {
2664 if (w->repeat) 3421 if (w->repeat)
2665 { 3422 {
… …
2678 3435
2679 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
2680} 3437}
2681 3438
2682ev_tstamp 3439ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w) 3440ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2684{ 3441{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3442 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2686} 3443}
2687 3444
2688#if EV_PERIODIC_ENABLE 3445#if EV_PERIODIC_ENABLE
2689void noinline 3446void noinline
2690ev_periodic_start (EV_P_ ev_periodic *w) 3447ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2691{ 3448{
2692 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2693 return; 3450 return;
2694 3451
2695 if (w->reschedule_cb) 3452 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3453 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 3454 else if (w->interval)
2698 { 3455 {
2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3456 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2700 /* this formula differs from the one in periodic_reify because we do not always round up */ 3457 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 3458 }
2703 else 3459 else
2704 ev_at (w) = w->offset; 3460 ev_at (w) = w->offset;
2705 3461
2706 EV_FREQUENT_CHECK; 3462 EV_FREQUENT_CHECK;
… …
2716 3472
2717 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3473 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2718} 3474}
2719 3475
2720void noinline 3476void noinline
2721ev_periodic_stop (EV_P_ ev_periodic *w) 3477ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2722{ 3478{
2723 clear_pending (EV_A_ (W)w); 3479 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 3480 if (expect_false (!ev_is_active (w)))
2725 return; 3481 return;
2726 3482
… …
2744 3500
2745 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2746} 3502}
2747 3503
2748void noinline 3504void noinline
2749ev_periodic_again (EV_P_ ev_periodic *w) 3505ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2750{ 3506{
2751 /* TODO: use adjustheap and recalculation */ 3507 /* TODO: use adjustheap and recalculation */
2752 ev_periodic_stop (EV_A_ w); 3508 ev_periodic_stop (EV_A_ w);
2753 ev_periodic_start (EV_A_ w); 3509 ev_periodic_start (EV_A_ w);
2754} 3510}
… …
2759#endif 3515#endif
2760 3516
2761#if EV_SIGNAL_ENABLE 3517#if EV_SIGNAL_ENABLE
2762 3518
2763void noinline 3519void noinline
2764ev_signal_start (EV_P_ ev_signal *w) 3520ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2765{ 3521{
2766 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2767 return; 3523 return;
2768 3524
2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3525 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2771#if EV_MULTIPLICITY 3527#if EV_MULTIPLICITY
2772 assert (("libev: a signal must not be attached to two different loops", 3528 assert (("libev: a signal must not be attached to two different loops",
2773 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3529 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2774 3530
2775 signals [w->signum - 1].loop = EV_A; 3531 signals [w->signum - 1].loop = EV_A;
3532 ECB_MEMORY_FENCE_RELEASE;
2776#endif 3533#endif
2777 3534
2778 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2779 3536
2780#if EV_USE_SIGNALFD 3537#if EV_USE_SIGNALFD
… …
2827 sa.sa_handler = ev_sighandler; 3584 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 3585 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3586 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 3587 sigaction (w->signum, &sa, 0);
2831 3588
3589 if (origflags & EVFLAG_NOSIGMASK)
3590 {
2832 sigemptyset (&sa.sa_mask); 3591 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 3592 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3593 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3594 }
2835#endif 3595#endif
2836 } 3596 }
2837 3597
2838 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
2839} 3599}
2840 3600
2841void noinline 3601void noinline
2842ev_signal_stop (EV_P_ ev_signal *w) 3602ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2843{ 3603{
2844 clear_pending (EV_A_ (W)w); 3604 clear_pending (EV_A_ (W)w);
2845 if (expect_false (!ev_is_active (w))) 3605 if (expect_false (!ev_is_active (w)))
2846 return; 3606 return;
2847 3607
… …
2878#endif 3638#endif
2879 3639
2880#if EV_CHILD_ENABLE 3640#if EV_CHILD_ENABLE
2881 3641
2882void 3642void
2883ev_child_start (EV_P_ ev_child *w) 3643ev_child_start (EV_P_ ev_child *w) EV_THROW
2884{ 3644{
2885#if EV_MULTIPLICITY 3645#if EV_MULTIPLICITY
2886 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3646 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2887#endif 3647#endif
2888 if (expect_false (ev_is_active (w))) 3648 if (expect_false (ev_is_active (w)))
… …
2895 3655
2896 EV_FREQUENT_CHECK; 3656 EV_FREQUENT_CHECK;
2897} 3657}
2898 3658
2899void 3659void
2900ev_child_stop (EV_P_ ev_child *w) 3660ev_child_stop (EV_P_ ev_child *w) EV_THROW
2901{ 3661{
2902 clear_pending (EV_A_ (W)w); 3662 clear_pending (EV_A_ (W)w);
2903 if (expect_false (!ev_is_active (w))) 3663 if (expect_false (!ev_is_active (w)))
2904 return; 3664 return;
2905 3665
… …
2980 if (!pend || pend == path) 3740 if (!pend || pend == path)
2981 break; 3741 break;
2982 3742
2983 *pend = 0; 3743 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 3744 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 3745 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3746 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 3747 }
2988 } 3748 }
2989 3749
2990 if (w->wd >= 0) 3750 if (w->wd >= 0)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3817 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3818 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3819 }
3060} 3820}
3061 3821
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void 3822inline_size void ecb_cold
3095ev_check_2625 (EV_P) 3823ev_check_2625 (EV_P)
3096{ 3824{
3097 /* kernels < 2.6.25 are borked 3825 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3826 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */ 3827 */
… …
3104} 3832}
3105 3833
3106inline_size int 3834inline_size int
3107infy_newfd (void) 3835infy_newfd (void)
3108{ 3836{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3837#if defined IN_CLOEXEC && defined IN_NONBLOCK
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3838 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0) 3839 if (fd >= 0)
3112 return fd; 3840 return fd;
3113#endif 3841#endif
3114 return inotify_init (); 3842 return inotify_init ();
… …
3189#else 3917#else
3190# define EV_LSTAT(p,b) lstat (p, b) 3918# define EV_LSTAT(p,b) lstat (p, b)
3191#endif 3919#endif
3192 3920
3193void 3921void
3194ev_stat_stat (EV_P_ ev_stat *w) 3922ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3195{ 3923{
3196 if (lstat (w->path, &w->attr) < 0) 3924 if (lstat (w->path, &w->attr) < 0)
3197 w->attr.st_nlink = 0; 3925 w->attr.st_nlink = 0;
3198 else if (!w->attr.st_nlink) 3926 else if (!w->attr.st_nlink)
3199 w->attr.st_nlink = 1; 3927 w->attr.st_nlink = 1;
… …
3238 ev_feed_event (EV_A_ w, EV_STAT); 3966 ev_feed_event (EV_A_ w, EV_STAT);
3239 } 3967 }
3240} 3968}
3241 3969
3242void 3970void
3243ev_stat_start (EV_P_ ev_stat *w) 3971ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3244{ 3972{
3245 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3246 return; 3974 return;
3247 3975
3248 ev_stat_stat (EV_A_ w); 3976 ev_stat_stat (EV_A_ w);
… …
3269 3997
3270 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
3271} 3999}
3272 4000
3273void 4001void
3274ev_stat_stop (EV_P_ ev_stat *w) 4002ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3275{ 4003{
3276 clear_pending (EV_A_ (W)w); 4004 clear_pending (EV_A_ (W)w);
3277 if (expect_false (!ev_is_active (w))) 4005 if (expect_false (!ev_is_active (w)))
3278 return; 4006 return;
3279 4007
… …
3295} 4023}
3296#endif 4024#endif
3297 4025
3298#if EV_IDLE_ENABLE 4026#if EV_IDLE_ENABLE
3299void 4027void
3300ev_idle_start (EV_P_ ev_idle *w) 4028ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3301{ 4029{
3302 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3303 return; 4031 return;
3304 4032
3305 pri_adjust (EV_A_ (W)w); 4033 pri_adjust (EV_A_ (W)w);
… …
3318 4046
3319 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
3320} 4048}
3321 4049
3322void 4050void
3323ev_idle_stop (EV_P_ ev_idle *w) 4051ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3324{ 4052{
3325 clear_pending (EV_A_ (W)w); 4053 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4054 if (expect_false (!ev_is_active (w)))
3327 return; 4055 return;
3328 4056
… …
3342} 4070}
3343#endif 4071#endif
3344 4072
3345#if EV_PREPARE_ENABLE 4073#if EV_PREPARE_ENABLE
3346void 4074void
3347ev_prepare_start (EV_P_ ev_prepare *w) 4075ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3348{ 4076{
3349 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3350 return; 4078 return;
3351 4079
3352 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
… …
3357 4085
3358 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3359} 4087}
3360 4088
3361void 4089void
3362ev_prepare_stop (EV_P_ ev_prepare *w) 4090ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3363{ 4091{
3364 clear_pending (EV_A_ (W)w); 4092 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4093 if (expect_false (!ev_is_active (w)))
3366 return; 4094 return;
3367 4095
… …
3380} 4108}
3381#endif 4109#endif
3382 4110
3383#if EV_CHECK_ENABLE 4111#if EV_CHECK_ENABLE
3384void 4112void
3385ev_check_start (EV_P_ ev_check *w) 4113ev_check_start (EV_P_ ev_check *w) EV_THROW
3386{ 4114{
3387 if (expect_false (ev_is_active (w))) 4115 if (expect_false (ev_is_active (w)))
3388 return; 4116 return;
3389 4117
3390 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
… …
3395 4123
3396 EV_FREQUENT_CHECK; 4124 EV_FREQUENT_CHECK;
3397} 4125}
3398 4126
3399void 4127void
3400ev_check_stop (EV_P_ ev_check *w) 4128ev_check_stop (EV_P_ ev_check *w) EV_THROW
3401{ 4129{
3402 clear_pending (EV_A_ (W)w); 4130 clear_pending (EV_A_ (W)w);
3403 if (expect_false (!ev_is_active (w))) 4131 if (expect_false (!ev_is_active (w)))
3404 return; 4132 return;
3405 4133
… …
3418} 4146}
3419#endif 4147#endif
3420 4148
3421#if EV_EMBED_ENABLE 4149#if EV_EMBED_ENABLE
3422void noinline 4150void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 4151ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3424{ 4152{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 4153 ev_run (w->other, EVRUN_NOWAIT);
3426} 4154}
3427 4155
3428static void 4156static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 4157embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 4158{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4159 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 4160
3433 if (ev_cb (w)) 4161 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4162 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 4163 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 4164 ev_run (w->other, EVRUN_NOWAIT);
3437} 4165}
3438 4166
3439static void 4167static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4168embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 4169{
… …
3445 EV_P = w->other; 4173 EV_P = w->other;
3446 4174
3447 while (fdchangecnt) 4175 while (fdchangecnt)
3448 { 4176 {
3449 fd_reify (EV_A); 4177 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4178 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 4179 }
3452 } 4180 }
3453} 4181}
3454 4182
3455static void 4183static void
… …
3461 4189
3462 { 4190 {
3463 EV_P = w->other; 4191 EV_P = w->other;
3464 4192
3465 ev_loop_fork (EV_A); 4193 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4194 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 4195 }
3468 4196
3469 ev_embed_start (EV_A_ w); 4197 ev_embed_start (EV_A_ w);
3470} 4198}
3471 4199
… …
3476 ev_idle_stop (EV_A_ idle); 4204 ev_idle_stop (EV_A_ idle);
3477} 4205}
3478#endif 4206#endif
3479 4207
3480void 4208void
3481ev_embed_start (EV_P_ ev_embed *w) 4209ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3482{ 4210{
3483 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
3484 return; 4212 return;
3485 4213
3486 { 4214 {
… …
3507 4235
3508 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3509} 4237}
3510 4238
3511void 4239void
3512ev_embed_stop (EV_P_ ev_embed *w) 4240ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3513{ 4241{
3514 clear_pending (EV_A_ (W)w); 4242 clear_pending (EV_A_ (W)w);
3515 if (expect_false (!ev_is_active (w))) 4243 if (expect_false (!ev_is_active (w)))
3516 return; 4244 return;
3517 4245
… …
3527} 4255}
3528#endif 4256#endif
3529 4257
3530#if EV_FORK_ENABLE 4258#if EV_FORK_ENABLE
3531void 4259void
3532ev_fork_start (EV_P_ ev_fork *w) 4260ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3533{ 4261{
3534 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3535 return; 4263 return;
3536 4264
3537 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
… …
3542 4270
3543 EV_FREQUENT_CHECK; 4271 EV_FREQUENT_CHECK;
3544} 4272}
3545 4273
3546void 4274void
3547ev_fork_stop (EV_P_ ev_fork *w) 4275ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3548{ 4276{
3549 clear_pending (EV_A_ (W)w); 4277 clear_pending (EV_A_ (W)w);
3550 if (expect_false (!ev_is_active (w))) 4278 if (expect_false (!ev_is_active (w)))
3551 return; 4279 return;
3552 4280
… …
3563 4291
3564 EV_FREQUENT_CHECK; 4292 EV_FREQUENT_CHECK;
3565} 4293}
3566#endif 4294#endif
3567 4295
4296#if EV_CLEANUP_ENABLE
4297void
4298ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4299{
4300 if (expect_false (ev_is_active (w)))
4301 return;
4302
4303 EV_FREQUENT_CHECK;
4304
4305 ev_start (EV_A_ (W)w, ++cleanupcnt);
4306 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4307 cleanups [cleanupcnt - 1] = w;
4308
4309 /* cleanup watchers should never keep a refcount on the loop */
4310 ev_unref (EV_A);
4311 EV_FREQUENT_CHECK;
4312}
4313
4314void
4315ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4316{
4317 clear_pending (EV_A_ (W)w);
4318 if (expect_false (!ev_is_active (w)))
4319 return;
4320
4321 EV_FREQUENT_CHECK;
4322 ev_ref (EV_A);
4323
4324 {
4325 int active = ev_active (w);
4326
4327 cleanups [active - 1] = cleanups [--cleanupcnt];
4328 ev_active (cleanups [active - 1]) = active;
4329 }
4330
4331 ev_stop (EV_A_ (W)w);
4332
4333 EV_FREQUENT_CHECK;
4334}
4335#endif
4336
3568#if EV_ASYNC_ENABLE 4337#if EV_ASYNC_ENABLE
3569void 4338void
3570ev_async_start (EV_P_ ev_async *w) 4339ev_async_start (EV_P_ ev_async *w) EV_THROW
3571{ 4340{
3572 if (expect_false (ev_is_active (w))) 4341 if (expect_false (ev_is_active (w)))
3573 return; 4342 return;
4343
4344 w->sent = 0;
3574 4345
3575 evpipe_init (EV_A); 4346 evpipe_init (EV_A);
3576 4347
3577 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3578 4349
… …
3582 4353
3583 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3584} 4355}
3585 4356
3586void 4357void
3587ev_async_stop (EV_P_ ev_async *w) 4358ev_async_stop (EV_P_ ev_async *w) EV_THROW
3588{ 4359{
3589 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3590 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3591 return; 4362 return;
3592 4363
… …
3603 4374
3604 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3605} 4376}
3606 4377
3607void 4378void
3608ev_async_send (EV_P_ ev_async *w) 4379ev_async_send (EV_P_ ev_async *w) EV_THROW
3609{ 4380{
3610 w->sent = 1; 4381 w->sent = 1;
3611 evpipe_write (EV_A_ &async_pending); 4382 evpipe_write (EV_A_ &async_pending);
3612} 4383}
3613#endif 4384#endif
… …
3650 4421
3651 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4422 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3652} 4423}
3653 4424
3654void 4425void
3655ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4426ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3656{ 4427{
3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4428 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3658 4429
3659 if (expect_false (!once)) 4430 if (expect_false (!once))
3660 { 4431 {
… …
3681} 4452}
3682 4453
3683/*****************************************************************************/ 4454/*****************************************************************************/
3684 4455
3685#if EV_WALK_ENABLE 4456#if EV_WALK_ENABLE
3686void 4457void ecb_cold
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4458ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3688{ 4459{
3689 int i, j; 4460 int i, j;
3690 ev_watcher_list *wl, *wn; 4461 ev_watcher_list *wl, *wn;
3691 4462
3692 if (types & (EV_IO | EV_EMBED)) 4463 if (types & (EV_IO | EV_EMBED))
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4506 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 4507#endif
3737 4508
3738#if EV_IDLE_ENABLE 4509#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 4510 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 4511 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 4512 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 4513 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 4514#endif
3744 4515
3745#if EV_FORK_ENABLE 4516#if EV_FORK_ENABLE
… …
3798 4569
3799#if EV_MULTIPLICITY 4570#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 4571 #include "ev_wrap.h"
3801#endif 4572#endif
3802 4573
3803#ifdef __cplusplus
3804}
3805#endif
3806

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