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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 1.424 by root, Tue May 1 22:01:40 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>
… …
207#define _DARWIN_UNLIMITED_SELECT 1 219#define _DARWIN_UNLIMITED_SELECT 1
208 220
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
210 222
211/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 224#if defined EV_NSIG
213/* use what's provided */ 225/* use what's provided */
214#elif defined (NSIG) 226#elif defined NSIG
215# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 228#elif defined _NSIG
217# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 230#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 232#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 236#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 238#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 242#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 244#else
233# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
236# define EV_NSIG 65 248# define EV_NSIG 65
237#endif 249#endif
238 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
239#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 258# else
243# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
244# endif 260# endif
245#endif 261#endif
246 262
247#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 265# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 266# else
251# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
252# endif 268# endif
253#endif 269#endif
… …
343#endif 359#endif
344 360
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* 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. */ 362/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 364# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
353# else 369# else
… …
378# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
380#endif 396#endif
381 397
382#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 401# include <sys/select.h>
385# endif 402# endif
386#endif 403#endif
387 404
388#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 406# include <sys/statfs.h>
391# include <sys/inotify.h> 407# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
412# else 428# else
413# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
414# endif 430# endif
415# endif 431# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 433#endif
424 434
425#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 437# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
434# else 444# else
435# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
436# endif 446# endif
437# endif 447# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 449
443struct signalfd_siginfo 450struct signalfd_siginfo
444{ 451{
445 uint32_t ssi_signo; 452 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
447}; 454};
448# ifdef __cplusplus
449}
450# endif 455#endif
451#endif
452
453 456
454/**/ 457/**/
455 458
456#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 461#else
459# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
460#endif 463#endif
461 464
462/* 465/*
463 * This is used to avoid floating point rounding problems. 466 * 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. 467 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 468 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 471
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#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) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
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
478#else 526#else
479# define expect(expr,value) (expr) 527 #include <inttypes.h>
480# define noinline
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
482# define inline
483# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 542 #endif
543#endif
485 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
488#define inline_size static inline 960#define inline_size ecb_inline
489 961
490#if EV_FEATURE_CODE 962#if EV_FEATURE_CODE
491# define inline_speed static inline 963# define inline_speed ecb_inline
492#else 964#else
493# define inline_speed static noinline 965# define inline_speed static noinline
494#endif 966#endif
495 967
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
511#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
512#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
513 985
514#if EV_USE_REALTIME 986#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* 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 */ 988/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif 990#endif
519 991
520#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
535# include "ev_win32.c" 1007# include "ev_win32.c"
536#endif 1008#endif
537 1009
538/*****************************************************************************/ 1010/*****************************************************************************/
539 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
540#if EV_AVOID_STDIO 1102#if EV_AVOID_STDIO
541static void noinline 1103static void noinline ecb_cold
542ev_printerr (const char *msg) 1104ev_printerr (const char *msg)
543{ 1105{
544 write (STDERR_FILENO, msg, strlen (msg)); 1106 write (STDERR_FILENO, msg, strlen (msg));
545} 1107}
546#endif 1108#endif
547 1109
548static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
549 1111
550void 1112void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
552{ 1114{
553 syserr_cb = cb; 1115 syserr_cb = cb;
554} 1116}
555 1117
556static void noinline 1118static void noinline ecb_cold
557ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
558{ 1120{
559 if (!msg) 1121 if (!msg)
560 msg = "(libev) system error"; 1122 msg = "(libev) system error";
561 1123
562 if (syserr_cb) 1124 if (syserr_cb)
563 syserr_cb (msg); 1125 syserr_cb (msg);
564 else 1126 else
565 { 1127 {
566#if EV_AVOID_STDIO 1128#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1129 ev_printerr (msg);
570 ev_printerr (": "); 1130 ev_printerr (": ");
571 ev_printerr (err); 1131 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1132 ev_printerr ("\n");
573#else 1133#else
574 perror (msg); 1134 perror (msg);
575#endif 1135#endif
576 abort (); 1136 abort ();
… …
594 free (ptr); 1154 free (ptr);
595 return 0; 1155 return 0;
596#endif 1156#endif
597} 1157}
598 1158
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1160
601void 1161void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
603{ 1163{
604 alloc = cb; 1164 alloc = cb;
605} 1165}
606 1166
607inline_speed void * 1167inline_speed void *
… …
610 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
611 1171
612 if (!ptr && size) 1172 if (!ptr && size)
613 { 1173 {
614#if EV_AVOID_STDIO 1174#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1176#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1178#endif
619 abort (); 1179 abort ();
620 } 1180 }
621 1181
622 return ptr; 1182 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1200 unsigned char unused;
641#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1203#endif
644#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
646#endif 1209#endif
647} ANFD; 1210} ANFD;
648 1211
649/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
650typedef struct 1213typedef struct
… …
692 #undef VAR 1255 #undef VAR
693 }; 1256 };
694 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
695 1258
696 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1261
699#else 1262#else
700 1263
701 ev_tstamp ev_rt_now; 1264 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; 1265 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1266 #include "ev_vars.h"
704 #undef VAR 1267 #undef VAR
705 1268
706 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1281#endif
719 1282
720#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
721 1284
722/*****************************************************************************/ 1285/*****************************************************************************/
723 1286
724#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1288ev_tstamp
726ev_time (void) 1289ev_time (void) EV_THROW
727{ 1290{
728#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
730 { 1293 {
731 struct timespec ts; 1294 struct timespec ts;
… …
755 return ev_time (); 1318 return ev_time ();
756} 1319}
757 1320
758#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
759ev_tstamp 1322ev_tstamp
760ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
761{ 1324{
762 return ev_rt_now; 1325 return ev_rt_now;
763} 1326}
764#endif 1327#endif
765 1328
766void 1329void
767ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
768{ 1331{
769 if (delay > 0.) 1332 if (delay > 0.)
770 { 1333 {
771#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
772 struct timespec ts; 1335 struct timespec ts;
773 1336
774 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1339#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
780#else 1341#else
781 struct timeval tv; 1342 struct timeval tv;
782 1343
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 */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
790#endif 1349#endif
791 } 1350 }
792} 1351}
793 1352
794/*****************************************************************************/ 1353/*****************************************************************************/
795 1354
796#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
797 1356
798/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
799/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
800inline_size int 1359inline_size int
801array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
802{ 1361{
803 int ncur = cur + 1; 1362 int ncur = cur + 1;
804 1363
805 do 1364 do
806 ncur <<= 1; 1365 ncur <<= 1;
807 while (cnt > ncur); 1366 while (cnt > ncur);
808 1367
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1370 {
812 ncur *= elem; 1371 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1375 }
817 1376
818 return ncur; 1377 return ncur;
819} 1378}
820 1379
821static noinline void * 1380static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1382{
824 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
826} 1385}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1389
831#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
833 { \ 1392 { \
834 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1397 }
839 1398
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1417{
859} 1418}
860 1419
861void noinline 1420void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1422{
864 W w_ = (W)w; 1423 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
866 1425
867 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
926 if (expect_true (!anfd->reify)) 1485 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1486 fd_event_nocheck (EV_A_ fd, revents);
928} 1487}
929 1488
930void 1489void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1491{
933 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
935} 1494}
936 1495
… …
939inline_size void 1498inline_size void
940fd_reify (EV_P) 1499fd_reify (EV_P)
941{ 1500{
942 int i; 1501 int i;
943 1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
1527
944 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
945 { 1529 {
946 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
948 ev_io *w; 1532 ev_io *w;
949 1533
950 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
951 1536
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1538
955#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1540 {
958 unsigned long arg; 1541 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1544 anfd->events |= (unsigned char)w->events;
1545
1546 if (o_events != anfd->events)
1547 o_reify = EV__IOFDSET; /* actually |= */
961 } 1548 }
962#endif
963 1549
964 { 1550 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); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1552 }
975 1553
976 fdchangecnt = 0; 1554 fdchangecnt = 0;
977} 1555}
978 1556
… …
990 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
991 } 1569 }
992} 1570}
993 1571
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1573inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
997{ 1575{
998 ev_io *w; 1576 ev_io *w;
999 1577
1000 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1582 }
1005} 1583}
1006 1584
1007/* check whether the given fd is actually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1586inline_size int ecb_cold
1009fd_valid (int fd) 1587fd_valid (int fd)
1010{ 1588{
1011#ifdef _WIN32 1589#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1591#else
1014 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
1015#endif 1593#endif
1016} 1594}
1017 1595
1018/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
1019static void noinline 1597static void noinline ecb_cold
1020fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
1021{ 1599{
1022 int fd; 1600 int fd;
1023 1601
1024 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
1028} 1606}
1029 1607
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1609static void noinline ecb_cold
1032fd_enomem (EV_P) 1610fd_enomem (EV_P)
1033{ 1611{
1034 int fd; 1612 int fd;
1035 1613
1036 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
… …
1071} 1649}
1072 1650
1073/*****************************************************************************/ 1651/*****************************************************************************/
1074 1652
1075/* 1653/*
1076 * the heap functions want a real array index. array index 0 uis guaranteed to not 1654 * 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 1655 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1078 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
1079 */ 1657 */
1080 1658
1081/* 1659/*
… …
1231 1809
1232/*****************************************************************************/ 1810/*****************************************************************************/
1233 1811
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1813
1236static void noinline 1814static void noinline ecb_cold
1237evpipe_init (EV_P) 1815evpipe_init (EV_P)
1238{ 1816{
1239 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1240 { 1818 {
1241# if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1843 }
1266} 1844}
1267 1845
1268inline_size void 1846inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1848{
1271 if (!*flag) 1849 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1850
1851 if (expect_true (*flag))
1852 return;
1853
1854 *flag = 1;
1855
1856 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1857
1858 pipe_write_skipped = 1;
1859
1860 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1861
1862 if (pipe_write_wanted)
1272 { 1863 {
1864 int old_errno;
1865
1866 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1867
1273 int old_errno = errno; /* save errno because write might clobber it */ 1868 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1869
1278#if EV_USE_EVENTFD 1870#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1871 if (evfd >= 0)
1280 { 1872 {
1281 uint64_t counter = 1; 1873 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1874 write (evfd, &counter, sizeof (uint64_t));
1283 } 1875 }
1284 else 1876 else
1285#endif 1877#endif
1878 {
1879 /* win32 people keep sending patches that change this write() to send() */
1880 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1881 /* so when you think this write should be a send instead, please find out */
1882 /* where your send() is from - it's definitely not the microsoft send, and */
1883 /* tell me. thank you. */
1884 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1885 /* check the ev documentation on how to use this flag */
1286 write (evpipe [1], &dummy, 1); 1886 write (evpipe [1], &(evpipe [1]), 1);
1887 }
1287 1888
1288 errno = old_errno; 1889 errno = old_errno;
1289 } 1890 }
1290} 1891}
1291 1892
… …
1294static void 1895static void
1295pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1296{ 1897{
1297 int i; 1898 int i;
1298 1899
1900 if (revents & EV_READ)
1901 {
1299#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1300 if (evfd >= 0) 1903 if (evfd >= 0)
1301 { 1904 {
1302 uint64_t counter; 1905 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1304 } 1907 }
1305 else 1908 else
1306#endif 1909#endif
1307 { 1910 {
1308 char dummy; 1911 char dummy;
1912 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1309 read (evpipe [0], &dummy, 1); 1913 read (evpipe [0], &dummy, 1);
1914 }
1310 } 1915 }
1311 1916
1917 pipe_write_skipped = 0;
1918
1919 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1920
1921#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 1922 if (sig_pending)
1313 { 1923 {
1314 sig_pending = 0; 1924 sig_pending = 0;
1925
1926 ECB_MEMORY_FENCE_RELEASE;
1315 1927
1316 for (i = EV_NSIG - 1; i--; ) 1928 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 1929 if (expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 1930 ev_feed_signal_event (EV_A_ i + 1);
1319 } 1931 }
1932#endif
1320 1933
1321#if EV_ASYNC_ENABLE 1934#if EV_ASYNC_ENABLE
1322 if (async_pending) 1935 if (async_pending)
1323 { 1936 {
1324 async_pending = 0; 1937 async_pending = 0;
1938
1939 ECB_MEMORY_FENCE_RELEASE;
1325 1940
1326 for (i = asynccnt; i--; ) 1941 for (i = asynccnt; i--; )
1327 if (asyncs [i]->sent) 1942 if (asyncs [i]->sent)
1328 { 1943 {
1329 asyncs [i]->sent = 0; 1944 asyncs [i]->sent = 0;
… …
1333#endif 1948#endif
1334} 1949}
1335 1950
1336/*****************************************************************************/ 1951/*****************************************************************************/
1337 1952
1953void
1954ev_feed_signal (int signum) EV_THROW
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = signals [signum - 1].loop;
1958
1959 if (!EV_A)
1960 return;
1961#endif
1962
1963 if (!ev_active (&pipe_w))
1964 return;
1965
1966 signals [signum - 1].pending = 1;
1967 evpipe_write (EV_A_ &sig_pending);
1968}
1969
1338static void 1970static void
1339ev_sighandler (int signum) 1971ev_sighandler (int signum)
1340{ 1972{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 1973#ifdef _WIN32
1346 signal (signum, ev_sighandler); 1974 signal (signum, ev_sighandler);
1347#endif 1975#endif
1348 1976
1349 signals [signum - 1].pending = 1; 1977 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 1978}
1352 1979
1353void noinline 1980void noinline
1354ev_feed_signal_event (EV_P_ int signum) 1981ev_feed_signal_event (EV_P_ int signum) EV_THROW
1355{ 1982{
1356 WL w; 1983 WL w;
1357 1984
1358 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1985 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return; 1986 return;
… …
1455 2082
1456#endif 2083#endif
1457 2084
1458/*****************************************************************************/ 2085/*****************************************************************************/
1459 2086
2087#if EV_USE_IOCP
2088# include "ev_iocp.c"
2089#endif
1460#if EV_USE_PORT 2090#if EV_USE_PORT
1461# include "ev_port.c" 2091# include "ev_port.c"
1462#endif 2092#endif
1463#if EV_USE_KQUEUE 2093#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2094# include "ev_kqueue.c"
… …
1471#endif 2101#endif
1472#if EV_USE_SELECT 2102#if EV_USE_SELECT
1473# include "ev_select.c" 2103# include "ev_select.c"
1474#endif 2104#endif
1475 2105
1476int 2106int ecb_cold
1477ev_version_major (void) 2107ev_version_major (void) EV_THROW
1478{ 2108{
1479 return EV_VERSION_MAJOR; 2109 return EV_VERSION_MAJOR;
1480} 2110}
1481 2111
1482int 2112int ecb_cold
1483ev_version_minor (void) 2113ev_version_minor (void) EV_THROW
1484{ 2114{
1485 return EV_VERSION_MINOR; 2115 return EV_VERSION_MINOR;
1486} 2116}
1487 2117
1488/* return true if we are running with elevated privileges and should ignore env variables */ 2118/* return true if we are running with elevated privileges and should ignore env variables */
1489int inline_size 2119int inline_size ecb_cold
1490enable_secure (void) 2120enable_secure (void)
1491{ 2121{
1492#ifdef _WIN32 2122#ifdef _WIN32
1493 return 0; 2123 return 0;
1494#else 2124#else
1495 return getuid () != geteuid () 2125 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2126 || getgid () != getegid ();
1497#endif 2127#endif
1498} 2128}
1499 2129
1500unsigned int 2130unsigned int ecb_cold
1501ev_supported_backends (void) 2131ev_supported_backends (void) EV_THROW
1502{ 2132{
1503 unsigned int flags = 0; 2133 unsigned int flags = 0;
1504 2134
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1506 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2136 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2139 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1510 2140
1511 return flags; 2141 return flags;
1512} 2142}
1513 2143
1514unsigned int 2144unsigned int ecb_cold
1515ev_recommended_backends (void) 2145ev_recommended_backends (void) EV_THROW
1516{ 2146{
1517 unsigned int flags = ev_supported_backends (); 2147 unsigned int flags = ev_supported_backends ();
1518 2148
1519#ifndef __NetBSD__ 2149#ifndef __NetBSD__
1520 /* kqueue is borked on everything but netbsd apparently */ 2150 /* kqueue is borked on everything but netbsd apparently */
… …
1531#endif 2161#endif
1532 2162
1533 return flags; 2163 return flags;
1534} 2164}
1535 2165
2166unsigned int ecb_cold
2167ev_embeddable_backends (void) EV_THROW
2168{
2169 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2170
2171 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2172 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2173 flags &= ~EVBACKEND_EPOLL;
2174
2175 return flags;
2176}
2177
1536unsigned int 2178unsigned 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) 2179ev_backend (EV_P) EV_THROW
1550{ 2180{
1551 return backend; 2181 return backend;
1552} 2182}
1553 2183
1554#if EV_FEATURE_API 2184#if EV_FEATURE_API
1555unsigned int 2185unsigned int
1556ev_iteration (EV_P) 2186ev_iteration (EV_P) EV_THROW
1557{ 2187{
1558 return loop_count; 2188 return loop_count;
1559} 2189}
1560 2190
1561unsigned int 2191unsigned int
1562ev_depth (EV_P) 2192ev_depth (EV_P) EV_THROW
1563{ 2193{
1564 return loop_depth; 2194 return loop_depth;
1565} 2195}
1566 2196
1567void 2197void
1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2198ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1569{ 2199{
1570 io_blocktime = interval; 2200 io_blocktime = interval;
1571} 2201}
1572 2202
1573void 2203void
1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2204ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2205{
1576 timeout_blocktime = interval; 2206 timeout_blocktime = interval;
1577} 2207}
1578 2208
1579void 2209void
1580ev_set_userdata (EV_P_ void *data) 2210ev_set_userdata (EV_P_ void *data) EV_THROW
1581{ 2211{
1582 userdata = data; 2212 userdata = data;
1583} 2213}
1584 2214
1585void * 2215void *
1586ev_userdata (EV_P) 2216ev_userdata (EV_P) EV_THROW
1587{ 2217{
1588 return userdata; 2218 return userdata;
1589} 2219}
1590 2220
2221void
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2222ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1592{ 2223{
1593 invoke_cb = invoke_pending_cb; 2224 invoke_cb = invoke_pending_cb;
1594} 2225}
1595 2226
2227void
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2228ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1597{ 2229{
1598 release_cb = release; 2230 release_cb = release;
1599 acquire_cb = acquire; 2231 acquire_cb = acquire;
1600} 2232}
1601#endif 2233#endif
1602 2234
1603/* initialise a loop structure, must be zero-initialised */ 2235/* initialise a loop structure, must be zero-initialised */
1604static void noinline 2236static void noinline ecb_cold
1605loop_init (EV_P_ unsigned int flags) 2237loop_init (EV_P_ unsigned int flags) EV_THROW
1606{ 2238{
1607 if (!backend) 2239 if (!backend)
1608 { 2240 {
2241 origflags = flags;
2242
1609#if EV_USE_REALTIME 2243#if EV_USE_REALTIME
1610 if (!have_realtime) 2244 if (!have_realtime)
1611 { 2245 {
1612 struct timespec ts; 2246 struct timespec ts;
1613 2247
… …
1635 if (!(flags & EVFLAG_NOENV) 2269 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 2270 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 2271 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 2272 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 2273
1640 ev_rt_now = ev_time (); 2274 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 2275 mn_now = get_clock ();
1642 now_floor = mn_now; 2276 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 2277 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 2278#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 2279 invoke_cb = ev_invoke_pending;
1646#endif 2280#endif
1647 2281
1648 io_blocktime = 0.; 2282 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 2283 timeout_blocktime = 0.;
1650 backend = 0; 2284 backend = 0;
1651 backend_fd = -1; 2285 backend_fd = -1;
1652 sig_pending = 0; 2286 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 2287#if EV_ASYNC_ENABLE
1654 async_pending = 0; 2288 async_pending = 0;
1655#endif 2289#endif
2290 pipe_write_skipped = 0;
2291 pipe_write_wanted = 0;
1656#if EV_USE_INOTIFY 2292#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2293 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 2294#endif
1659#if EV_USE_SIGNALFD 2295#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2296 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 2297#endif
1662 2298
1663 if (!(flags & 0x0000ffffU)) 2299 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 2300 flags |= ev_recommended_backends ();
1665 2301
2302#if EV_USE_IOCP
2303 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2304#endif
1666#if EV_USE_PORT 2305#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 2307#endif
1669#if EV_USE_KQUEUE 2308#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2309 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 2326#endif
1688 } 2327 }
1689} 2328}
1690 2329
1691/* free up a loop structure */ 2330/* free up a loop structure */
1692static void noinline 2331void ecb_cold
1693loop_destroy (EV_P) 2332ev_loop_destroy (EV_P)
1694{ 2333{
1695 int i; 2334 int i;
2335
2336#if EV_MULTIPLICITY
2337 /* mimic free (0) */
2338 if (!EV_A)
2339 return;
2340#endif
2341
2342#if EV_CLEANUP_ENABLE
2343 /* queue cleanup watchers (and execute them) */
2344 if (expect_false (cleanupcnt))
2345 {
2346 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2347 EV_INVOKE_PENDING;
2348 }
2349#endif
2350
2351#if EV_CHILD_ENABLE
2352 if (ev_is_active (&childev))
2353 {
2354 ev_ref (EV_A); /* child watcher */
2355 ev_signal_stop (EV_A_ &childev);
2356 }
2357#endif
1696 2358
1697 if (ev_is_active (&pipe_w)) 2359 if (ev_is_active (&pipe_w))
1698 { 2360 {
1699 /*ev_ref (EV_A);*/ 2361 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 2362 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1722#endif 2384#endif
1723 2385
1724 if (backend_fd >= 0) 2386 if (backend_fd >= 0)
1725 close (backend_fd); 2387 close (backend_fd);
1726 2388
2389#if EV_USE_IOCP
2390 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2391#endif
1727#if EV_USE_PORT 2392#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 2394#endif
1730#if EV_USE_KQUEUE 2395#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 2423 array_free (periodic, EMPTY);
1759#endif 2424#endif
1760#if EV_FORK_ENABLE 2425#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 2426 array_free (fork, EMPTY);
1762#endif 2427#endif
2428#if EV_CLEANUP_ENABLE
2429 array_free (cleanup, EMPTY);
2430#endif
1763 array_free (prepare, EMPTY); 2431 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 2432 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 2433#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 2434 array_free (async, EMPTY);
1767#endif 2435#endif
1768 2436
1769 backend = 0; 2437 backend = 0;
2438
2439#if EV_MULTIPLICITY
2440 if (ev_is_default_loop (EV_A))
2441#endif
2442 ev_default_loop_ptr = 0;
2443#if EV_MULTIPLICITY
2444 else
2445 ev_free (EV_A);
2446#endif
1770} 2447}
1771 2448
1772#if EV_USE_INOTIFY 2449#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 2450inline_size void infy_fork (EV_P);
1774#endif 2451#endif
… …
1789 infy_fork (EV_A); 2466 infy_fork (EV_A);
1790#endif 2467#endif
1791 2468
1792 if (ev_is_active (&pipe_w)) 2469 if (ev_is_active (&pipe_w))
1793 { 2470 {
1794 /* this "locks" the handlers against writing to the pipe */ 2471 /* 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 2472
1801 ev_ref (EV_A); 2473 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 2474 ev_io_stop (EV_A_ &pipe_w);
1803 2475
1804#if EV_USE_EVENTFD 2476#if EV_USE_EVENTFD
… …
1822 postfork = 0; 2494 postfork = 0;
1823} 2495}
1824 2496
1825#if EV_MULTIPLICITY 2497#if EV_MULTIPLICITY
1826 2498
1827struct ev_loop * 2499struct ev_loop * ecb_cold
1828ev_loop_new (unsigned int flags) 2500ev_loop_new (unsigned int flags) EV_THROW
1829{ 2501{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2502 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 2503
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 2504 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 2505 loop_init (EV_A_ flags);
1834 2506
1835 if (ev_backend (EV_A)) 2507 if (ev_backend (EV_A))
1836 return EV_A; 2508 return EV_A;
1837 2509
2510 ev_free (EV_A);
1838 return 0; 2511 return 0;
1839} 2512}
1840 2513
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 */ 2514#endif /* multiplicity */
1854 2515
1855#if EV_VERIFY 2516#if EV_VERIFY
1856static void noinline 2517static void noinline ecb_cold
1857verify_watcher (EV_P_ W w) 2518verify_watcher (EV_P_ W w)
1858{ 2519{
1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2520 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1860 2521
1861 if (w->pending) 2522 if (w->pending)
1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2523 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1863} 2524}
1864 2525
1865static void noinline 2526static void noinline ecb_cold
1866verify_heap (EV_P_ ANHE *heap, int N) 2527verify_heap (EV_P_ ANHE *heap, int N)
1867{ 2528{
1868 int i; 2529 int i;
1869 2530
1870 for (i = HEAP0; i < N + HEAP0; ++i) 2531 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 2536
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2537 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 2538 }
1878} 2539}
1879 2540
1880static void noinline 2541static void noinline ecb_cold
1881array_verify (EV_P_ W *ws, int cnt) 2542array_verify (EV_P_ W *ws, int cnt)
1882{ 2543{
1883 while (cnt--) 2544 while (cnt--)
1884 { 2545 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2546 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 2548 }
1888} 2549}
1889#endif 2550#endif
1890 2551
1891#if EV_FEATURE_API 2552#if EV_FEATURE_API
1892void 2553void ecb_cold
1893ev_verify (EV_P) 2554ev_verify (EV_P) EV_THROW
1894{ 2555{
1895#if EV_VERIFY 2556#if EV_VERIFY
1896 int i; 2557 int i;
1897 WL w; 2558 WL w;
1898 2559
… …
1932#if EV_FORK_ENABLE 2593#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2594 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2595 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2596#endif
1936 2597
2598#if EV_CLEANUP_ENABLE
2599 assert (cleanupmax >= cleanupcnt);
2600 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2601#endif
2602
1937#if EV_ASYNC_ENABLE 2603#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2604 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2605 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2606#endif
1941 2607
… …
1958#endif 2624#endif
1959} 2625}
1960#endif 2626#endif
1961 2627
1962#if EV_MULTIPLICITY 2628#if EV_MULTIPLICITY
1963struct ev_loop * 2629struct ev_loop * ecb_cold
1964ev_default_loop_init (unsigned int flags)
1965#else 2630#else
1966int 2631int
2632#endif
1967ev_default_loop (unsigned int flags) 2633ev_default_loop (unsigned int flags) EV_THROW
1968#endif
1969{ 2634{
1970 if (!ev_default_loop_ptr) 2635 if (!ev_default_loop_ptr)
1971 { 2636 {
1972#if EV_MULTIPLICITY 2637#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2638 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2657
1993 return ev_default_loop_ptr; 2658 return ev_default_loop_ptr;
1994} 2659}
1995 2660
1996void 2661void
1997ev_default_destroy (void) 2662ev_loop_fork (EV_P) EV_THROW
1998{ 2663{
1999#if EV_MULTIPLICITY
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 */ 2664 postfork = 1; /* must be in line with ev_default_fork */
2021} 2665}
2022 2666
2023/*****************************************************************************/ 2667/*****************************************************************************/
2024 2668
2025void 2669void
… …
2027{ 2671{
2028 EV_CB_INVOKE ((W)w, revents); 2672 EV_CB_INVOKE ((W)w, revents);
2029} 2673}
2030 2674
2031unsigned int 2675unsigned int
2032ev_pending_count (EV_P) 2676ev_pending_count (EV_P) EV_THROW
2033{ 2677{
2034 int pri; 2678 int pri;
2035 unsigned int count = 0; 2679 unsigned int count = 0;
2036 2680
2037 for (pri = NUMPRI; pri--; ) 2681 for (pri = NUMPRI; pri--; )
… …
2047 2691
2048 for (pri = NUMPRI; pri--; ) 2692 for (pri = NUMPRI; pri--; )
2049 while (pendingcnt [pri]) 2693 while (pendingcnt [pri])
2050 { 2694 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2052
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 2696
2056 p->w->pending = 0; 2697 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
2059 } 2700 }
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 2762 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 2763 }
2123} 2764}
2124 2765
2125#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2126/* make periodics pending */ 2792/* make periodics pending */
2127inline_size void 2793inline_size void
2128periodics_reify (EV_P) 2794periodics_reify (EV_P)
2129{ 2795{
2130 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
… …
2149 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
2151 } 2817 }
2152 else if (w->interval) 2818 else if (w->interval)
2153 { 2819 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 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]); 2821 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 2822 downheap (periodics, periodiccnt, HEAP0);
2170 } 2823 }
2171 else 2824 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2179 feed_reverse_done (EV_A_ EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
2180 } 2833 }
2181} 2834}
2182 2835
2183/* simply recalculate all periodics */ 2836/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
2185static void noinline 2838static void noinline ecb_cold
2186periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
2187{ 2840{
2188 int i; 2841 int i;
2189 2842
2190 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 2847
2195 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 2850 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
2199 2852
2200 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
2201 } 2854 }
2202 2855
2203 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
2204} 2857}
2205#endif 2858#endif
2206 2859
2207/* adjust all timers by a given offset */ 2860/* adjust all timers by a given offset */
2208static void noinline 2861static void noinline ecb_cold
2209timers_reschedule (EV_P_ ev_tstamp adjust) 2862timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 2863{
2211 int i; 2864 int i;
2212 2865
2213 for (i = 0; i < timercnt; ++i) 2866 for (i = 0; i < timercnt; ++i)
… …
2250 * doesn't hurt either as we only do this on time-jumps or 2903 * doesn't hurt either as we only do this on time-jumps or
2251 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
2252 */ 2905 */
2253 for (i = 4; --i; ) 2906 for (i = 4; --i; )
2254 { 2907 {
2908 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
2256 2910
2911 diff = odiff - rtmn_diff;
2912
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258 return; /* all is well */ 2914 return; /* all is well */
2259 2915
2260 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 2917 mn_now = get_clock ();
2262 now_floor = mn_now; 2918 now_floor = mn_now;
… …
2284 2940
2285 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
2286 } 2942 }
2287} 2943}
2288 2944
2289void 2945int
2290ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
2291{ 2947{
2292#if EV_FEATURE_API 2948#if EV_FEATURE_API
2293 ++loop_depth; 2949 ++loop_depth;
2294#endif 2950#endif
2295 2951
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 2953
2298 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
2299 2955
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 2957
2302 do 2958 do
2303 { 2959 {
… …
2346 /* calculate blocking time */ 3002 /* calculate blocking time */
2347 { 3003 {
2348 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
2350 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 3019 {
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; 3020 waittime = MAX_BLOCKTIME;
2360 3021
2361 if (timercnt) 3022 if (timercnt)
2362 { 3023 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
2365 } 3026 }
2366 3027
2367#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 3029 if (periodiccnt)
2369 { 3030 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
2372 } 3033 }
2373#endif 3034#endif
2374 3035
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
2377 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
3039
3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
2378 3044
2379 /* extra check because io_blocktime is commonly 0 */ 3045 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3046 if (expect_false (io_blocktime))
2381 { 3047 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3049
2384 if (sleeptime > waittime - backend_fudge) 3050 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3051 sleeptime = waittime - backend_mintime;
2386 3052
2387 if (expect_true (sleeptime > 0.)) 3053 if (expect_true (sleeptime > 0.))
2388 { 3054 {
2389 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3056 waittime -= sleeptime;
… …
2393 } 3059 }
2394 3060
2395#if EV_FEATURE_API 3061#if EV_FEATURE_API
2396 ++loop_count; 3062 ++loop_count;
2397#endif 3063#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
2401 3076
2402 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
2404 } 3079 }
2405 3080
… …
2423 EV_INVOKE_PENDING; 3098 EV_INVOKE_PENDING;
2424 } 3099 }
2425 while (expect_true ( 3100 while (expect_true (
2426 activecnt 3101 activecnt
2427 && !loop_done 3102 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 3104 ));
2430 3105
2431 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
2433 3108
2434#if EV_FEATURE_API 3109#if EV_FEATURE_API
2435 --loop_depth; 3110 --loop_depth;
2436#endif 3111#endif
3112
3113 return activecnt;
2437} 3114}
2438 3115
2439void 3116void
2440ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
2441{ 3118{
2442 loop_done = how; 3119 loop_done = how;
2443} 3120}
2444 3121
2445void 3122void
2446ev_ref (EV_P) 3123ev_ref (EV_P) EV_THROW
2447{ 3124{
2448 ++activecnt; 3125 ++activecnt;
2449} 3126}
2450 3127
2451void 3128void
2452ev_unref (EV_P) 3129ev_unref (EV_P) EV_THROW
2453{ 3130{
2454 --activecnt; 3131 --activecnt;
2455} 3132}
2456 3133
2457void 3134void
2458ev_now_update (EV_P) 3135ev_now_update (EV_P) EV_THROW
2459{ 3136{
2460 time_update (EV_A_ 1e100); 3137 time_update (EV_A_ 1e100);
2461} 3138}
2462 3139
2463void 3140void
2464ev_suspend (EV_P) 3141ev_suspend (EV_P) EV_THROW
2465{ 3142{
2466 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2467} 3144}
2468 3145
2469void 3146void
2470ev_resume (EV_P) 3147ev_resume (EV_P) EV_THROW
2471{ 3148{
2472 ev_tstamp mn_prev = mn_now; 3149 ev_tstamp mn_prev = mn_now;
2473 3150
2474 ev_now_update (EV_A); 3151 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev); 3152 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2514 w->pending = 0; 3191 w->pending = 0;
2515 } 3192 }
2516} 3193}
2517 3194
2518int 3195int
2519ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2520{ 3197{
2521 W w_ = (W)w; 3198 W w_ = (W)w;
2522 int pending = w_->pending; 3199 int pending = w_->pending;
2523 3200
2524 if (expect_true (pending)) 3201 if (expect_true (pending))
… …
2557} 3234}
2558 3235
2559/*****************************************************************************/ 3236/*****************************************************************************/
2560 3237
2561void noinline 3238void noinline
2562ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2563{ 3240{
2564 int fd = w->fd; 3241 int fd = w->fd;
2565 3242
2566 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2567 return; 3244 return;
… …
2580 3257
2581 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2582} 3259}
2583 3260
2584void noinline 3261void noinline
2585ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2586{ 3263{
2587 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2588 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2589 return; 3266 return;
2590 3267
… …
2593 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2594 3271
2595 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2597 3274
2598 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 3276
2600 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2601} 3278}
2602 3279
2603void noinline 3280void noinline
2604ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2605{ 3282{
2606 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2607 return; 3284 return;
2608 3285
2609 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
… …
2623 3300
2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2625} 3302}
2626 3303
2627void noinline 3304void noinline
2628ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2629{ 3306{
2630 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2631 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2632 return; 3309 return;
2633 3310
… …
2653 3330
2654 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2655} 3332}
2656 3333
2657void noinline 3334void noinline
2658ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2659{ 3336{
2660 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2661 3340
2662 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2663 { 3342 {
2664 if (w->repeat) 3343 if (w->repeat)
2665 { 3344 {
… …
2678 3357
2679 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2680} 3359}
2681 3360
2682ev_tstamp 3361ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w) 3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2684{ 3363{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2686} 3365}
2687 3366
2688#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2689void noinline 3368void noinline
2690ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2691{ 3370{
2692 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2693 return; 3372 return;
2694 3373
2695 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 3376 else if (w->interval)
2698 { 3377 {
2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 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 */ 3379 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 3380 }
2703 else 3381 else
2704 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2705 3383
2706 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2716 3394
2717 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2718} 3396}
2719 3397
2720void noinline 3398void noinline
2721ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2722{ 3400{
2723 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2725 return; 3403 return;
2726 3404
… …
2744 3422
2745 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2746} 3424}
2747 3425
2748void noinline 3426void noinline
2749ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2750{ 3428{
2751 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2752 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2753 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2754} 3432}
… …
2759#endif 3437#endif
2760 3438
2761#if EV_SIGNAL_ENABLE 3439#if EV_SIGNAL_ENABLE
2762 3440
2763void noinline 3441void noinline
2764ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2765{ 3443{
2766 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2767 return; 3445 return;
2768 3446
2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2827 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
2831 3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
2832 sigemptyset (&sa.sa_mask); 3512 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 3513 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2835#endif 3516#endif
2836 } 3517 }
2837 3518
2838 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2839} 3520}
2840 3521
2841void noinline 3522void noinline
2842ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2843{ 3524{
2844 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2845 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2846 return; 3527 return;
2847 3528
… …
2878#endif 3559#endif
2879 3560
2880#if EV_CHILD_ENABLE 3561#if EV_CHILD_ENABLE
2881 3562
2882void 3563void
2883ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2884{ 3565{
2885#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2886 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2887#endif 3568#endif
2888 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
… …
2895 3576
2896 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2897} 3578}
2898 3579
2899void 3580void
2900ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2901{ 3582{
2902 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2903 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2904 return; 3585 return;
2905 3586
… …
2980 if (!pend || pend == path) 3661 if (!pend || pend == path)
2981 break; 3662 break;
2982 3663
2983 *pend = 0; 3664 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 3666 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 3668 }
2988 } 3669 }
2989 3670
2990 if (w->wd >= 0) 3671 if (w->wd >= 0)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3739 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3740 }
3060} 3741}
3061 3742
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 3743inline_size void ecb_cold
3095ev_check_2625 (EV_P) 3744ev_check_2625 (EV_P)
3096{ 3745{
3097 /* kernels < 2.6.25 are borked 3746 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */ 3748 */
… …
3104} 3753}
3105 3754
3106inline_size int 3755inline_size int
3107infy_newfd (void) 3756infy_newfd (void)
3108{ 3757{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0) 3760 if (fd >= 0)
3112 return fd; 3761 return fd;
3113#endif 3762#endif
3114 return inotify_init (); 3763 return inotify_init ();
… …
3189#else 3838#else
3190# define EV_LSTAT(p,b) lstat (p, b) 3839# define EV_LSTAT(p,b) lstat (p, b)
3191#endif 3840#endif
3192 3841
3193void 3842void
3194ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3195{ 3844{
3196 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
3197 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
3198 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
3199 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
3238 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
3239 } 3888 }
3240} 3889}
3241 3890
3242void 3891void
3243ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3244{ 3893{
3245 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
3246 return; 3895 return;
3247 3896
3248 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
… …
3269 3918
3270 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
3271} 3920}
3272 3921
3273void 3922void
3274ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3275{ 3924{
3276 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
3277 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
3278 return; 3927 return;
3279 3928
… …
3295} 3944}
3296#endif 3945#endif
3297 3946
3298#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
3299void 3948void
3300ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3301{ 3950{
3302 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
3303 return; 3952 return;
3304 3953
3305 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
3318 3967
3319 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3320} 3969}
3321 3970
3322void 3971void
3323ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3324{ 3973{
3325 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
3327 return; 3976 return;
3328 3977
… …
3342} 3991}
3343#endif 3992#endif
3344 3993
3345#if EV_PREPARE_ENABLE 3994#if EV_PREPARE_ENABLE
3346void 3995void
3347ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3348{ 3997{
3349 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
3350 return; 3999 return;
3351 4000
3352 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
3357 4006
3358 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
3359} 4008}
3360 4009
3361void 4010void
3362ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3363{ 4012{
3364 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
3366 return; 4015 return;
3367 4016
… …
3380} 4029}
3381#endif 4030#endif
3382 4031
3383#if EV_CHECK_ENABLE 4032#if EV_CHECK_ENABLE
3384void 4033void
3385ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
3386{ 4035{
3387 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
3388 return; 4037 return;
3389 4038
3390 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
3395 4044
3396 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
3397} 4046}
3398 4047
3399void 4048void
3400ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
3401{ 4050{
3402 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
3403 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
3404 return; 4053 return;
3405 4054
… …
3418} 4067}
3419#endif 4068#endif
3420 4069
3421#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
3422void noinline 4071void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3424{ 4073{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
3426} 4075}
3427 4076
3428static void 4077static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 4079{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 4081
3433 if (ev_cb (w)) 4082 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 4084 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
3437} 4086}
3438 4087
3439static void 4088static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 4090{
… …
3445 EV_P = w->other; 4094 EV_P = w->other;
3446 4095
3447 while (fdchangecnt) 4096 while (fdchangecnt)
3448 { 4097 {
3449 fd_reify (EV_A); 4098 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 4100 }
3452 } 4101 }
3453} 4102}
3454 4103
3455static void 4104static void
… …
3461 4110
3462 { 4111 {
3463 EV_P = w->other; 4112 EV_P = w->other;
3464 4113
3465 ev_loop_fork (EV_A); 4114 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 4116 }
3468 4117
3469 ev_embed_start (EV_A_ w); 4118 ev_embed_start (EV_A_ w);
3470} 4119}
3471 4120
… …
3476 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
3477} 4126}
3478#endif 4127#endif
3479 4128
3480void 4129void
3481ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3482{ 4131{
3483 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3484 return; 4133 return;
3485 4134
3486 { 4135 {
… …
3507 4156
3508 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3509} 4158}
3510 4159
3511void 4160void
3512ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3513{ 4162{
3514 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
3515 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
3516 return; 4165 return;
3517 4166
… …
3527} 4176}
3528#endif 4177#endif
3529 4178
3530#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
3531void 4180void
3532ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3533{ 4182{
3534 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3535 return; 4184 return;
3536 4185
3537 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
3542 4191
3543 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
3544} 4193}
3545 4194
3546void 4195void
3547ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3548{ 4197{
3549 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
3550 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
3551 return; 4200 return;
3552 4201
… …
3563 4212
3564 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
3565} 4214}
3566#endif 4215#endif
3567 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
3568#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
3569void 4259void
3570ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
3571{ 4261{
3572 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3573 return; 4263 return;
4264
4265 w->sent = 0;
3574 4266
3575 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
3576 4268
3577 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3578 4270
… …
3582 4274
3583 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3584} 4276}
3585 4277
3586void 4278void
3587ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
3588{ 4280{
3589 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3590 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3591 return; 4283 return;
3592 4284
… …
3603 4295
3604 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3605} 4297}
3606 4298
3607void 4299void
3608ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
3609{ 4301{
3610 w->sent = 1; 4302 w->sent = 1;
3611 evpipe_write (EV_A_ &async_pending); 4303 evpipe_write (EV_A_ &async_pending);
3612} 4304}
3613#endif 4305#endif
… …
3650 4342
3651 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3652} 4344}
3653 4345
3654void 4346void
3655ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3656{ 4348{
3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3658 4350
3659 if (expect_false (!once)) 4351 if (expect_false (!once))
3660 { 4352 {
… …
3681} 4373}
3682 4374
3683/*****************************************************************************/ 4375/*****************************************************************************/
3684 4376
3685#if EV_WALK_ENABLE 4377#if EV_WALK_ENABLE
3686void 4378void ecb_cold
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3688{ 4380{
3689 int i, j; 4381 int i, j;
3690 ev_watcher_list *wl, *wn; 4382 ev_watcher_list *wl, *wn;
3691 4383
3692 if (types & (EV_IO | EV_EMBED)) 4384 if (types & (EV_IO | EV_EMBED))
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 4428#endif
3737 4429
3738#if EV_IDLE_ENABLE 4430#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 4431 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 4432 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 4433 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 4434 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 4435#endif
3744 4436
3745#if EV_FORK_ENABLE 4437#if EV_FORK_ENABLE
… …
3798 4490
3799#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
3801#endif 4493#endif
3802 4494
3803#ifdef __cplusplus
3804}
3805#endif
3806

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