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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.426 by root, Sun May 6 13:42:10 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)
… …
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
… …
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))
… …
871 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
875 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
876} 1437}
877 1438
878inline_speed void 1439inline_speed void
879feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
880{ 1441{
… …
926 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
928} 1489}
929 1490
930void 1491void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1493{
933 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
935} 1496}
936 1497
… …
939inline_size void 1500inline_size void
940fd_reify (EV_P) 1501fd_reify (EV_P)
941{ 1502{
942 int i; 1503 int i;
943 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
944 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
945 { 1531 {
946 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
948 ev_io *w; 1534 ev_io *w;
949 1535
950 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
951 1538
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1540
955#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1542 {
958 unsigned long arg; 1543 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1544
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1546 anfd->events |= (unsigned char)w->events;
1547
1548 if (o_events != anfd->events)
1549 o_reify = EV__IOFDSET; /* actually |= */
961 } 1550 }
962#endif
963 1551
964 { 1552 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); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1554 }
975 1555
976 fdchangecnt = 0; 1556 fdchangecnt = 0;
977} 1557}
978 1558
… …
990 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
991 } 1571 }
992} 1572}
993 1573
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1575inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
997{ 1577{
998 ev_io *w; 1578 ev_io *w;
999 1579
1000 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1584 }
1005} 1585}
1006 1586
1007/* check whether the given fd is actually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1588inline_size int ecb_cold
1009fd_valid (int fd) 1589fd_valid (int fd)
1010{ 1590{
1011#ifdef _WIN32 1591#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1593#else
1014 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
1015#endif 1595#endif
1016} 1596}
1017 1597
1018/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
1019static void noinline 1599static void noinline ecb_cold
1020fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
1021{ 1601{
1022 int fd; 1602 int fd;
1023 1603
1024 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
1028} 1608}
1029 1609
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1611static void noinline ecb_cold
1032fd_enomem (EV_P) 1612fd_enomem (EV_P)
1033{ 1613{
1034 int fd; 1614 int fd;
1035 1615
1036 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
1231 1811
1232/*****************************************************************************/ 1812/*****************************************************************************/
1233 1813
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1815
1236static void noinline 1816static void noinline ecb_cold
1237evpipe_init (EV_P) 1817evpipe_init (EV_P)
1238{ 1818{
1239 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1240 { 1820 {
1241# if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1845 }
1266} 1846}
1267 1847
1268inline_size void 1848inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1850{
1271 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1272 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1273 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1871
1278#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1873 if (evfd >= 0)
1280 { 1874 {
1281 uint64_t counter = 1; 1875 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1283 } 1877 }
1284 else 1878 else
1285#endif 1879#endif
1880 {
1286 /* win32 people keep sending patches that change this write() to send() */ 1881 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */ 1883 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */ 1884 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */ 1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1291 write (evpipe [1], &dummy, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1292 1890
1293 errno = old_errno; 1891 errno = old_errno;
1294 } 1892 }
1295} 1893}
1296 1894
… …
1299static void 1897static void
1300pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1301{ 1899{
1302 int i; 1900 int i;
1303 1901
1902 if (revents & EV_READ)
1903 {
1304#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1305 if (evfd >= 0) 1905 if (evfd >= 0)
1306 { 1906 {
1307 uint64_t counter; 1907 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1309 } 1909 }
1310 else 1910 else
1311#endif 1911#endif
1312 { 1912 {
1313 char dummy; 1913 char dummy;
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1315 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1316 } 1917 }
1317 1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 1924 if (sig_pending)
1319 { 1925 {
1320 sig_pending = 0; 1926 sig_pending = 0;
1927
1928 ECB_MEMORY_FENCE_RELEASE;
1321 1929
1322 for (i = EV_NSIG - 1; i--; ) 1930 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 1931 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1325 } 1933 }
1934#endif
1326 1935
1327#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1328 if (async_pending) 1937 if (async_pending)
1329 { 1938 {
1330 async_pending = 0; 1939 async_pending = 0;
1940
1941 ECB_MEMORY_FENCE_RELEASE;
1331 1942
1332 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1334 { 1945 {
1335 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1339#endif 1950#endif
1340} 1951}
1341 1952
1342/*****************************************************************************/ 1953/*****************************************************************************/
1343 1954
1955void
1956ev_feed_signal (int signum) EV_THROW
1957{
1958#if EV_MULTIPLICITY
1959 EV_P = signals [signum - 1].loop;
1960
1961 if (!EV_A)
1962 return;
1963#endif
1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending);
1970}
1971
1344static void 1972static void
1345ev_sighandler (int signum) 1973ev_sighandler (int signum)
1346{ 1974{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 1975#ifdef _WIN32
1352 signal (signum, ev_sighandler); 1976 signal (signum, ev_sighandler);
1353#endif 1977#endif
1354 1978
1355 signals [signum - 1].pending = 1; 1979 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 1980}
1358 1981
1359void noinline 1982void noinline
1360ev_feed_signal_event (EV_P_ int signum) 1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 1984{
1362 WL w; 1985 WL w;
1363 1986
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1365 return; 1988 return;
… …
1461 2084
1462#endif 2085#endif
1463 2086
1464/*****************************************************************************/ 2087/*****************************************************************************/
1465 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1466#if EV_USE_PORT 2092#if EV_USE_PORT
1467# include "ev_port.c" 2093# include "ev_port.c"
1468#endif 2094#endif
1469#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1477#endif 2103#endif
1478#if EV_USE_SELECT 2104#if EV_USE_SELECT
1479# include "ev_select.c" 2105# include "ev_select.c"
1480#endif 2106#endif
1481 2107
1482int 2108int ecb_cold
1483ev_version_major (void) 2109ev_version_major (void) EV_THROW
1484{ 2110{
1485 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1486} 2112}
1487 2113
1488int 2114int ecb_cold
1489ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1490{ 2116{
1491 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1492} 2118}
1493 2119
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2121int inline_size ecb_cold
1496enable_secure (void) 2122enable_secure (void)
1497{ 2123{
1498#ifdef _WIN32 2124#ifdef _WIN32
1499 return 0; 2125 return 0;
1500#else 2126#else
1501 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2128 || getgid () != getegid ();
1503#endif 2129#endif
1504} 2130}
1505 2131
1506unsigned int 2132unsigned int ecb_cold
1507ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1508{ 2134{
1509 unsigned int flags = 0; 2135 unsigned int flags = 0;
1510 2136
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2142
1517 return flags; 2143 return flags;
1518} 2144}
1519 2145
1520unsigned int 2146unsigned int ecb_cold
1521ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1522{ 2148{
1523 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1524 2150
1525#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2163#endif
1538 2164
1539 return flags; 2165 return flags;
1540} 2166}
1541 2167
2168unsigned int ecb_cold
2169ev_embeddable_backends (void) EV_THROW
2170{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL;
2176
2177 return flags;
2178}
2179
1542unsigned int 2180unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2181ev_backend (EV_P) EV_THROW
1556{ 2182{
1557 return backend; 2183 return backend;
1558} 2184}
1559 2185
1560#if EV_FEATURE_API 2186#if EV_FEATURE_API
1561unsigned int 2187unsigned int
1562ev_iteration (EV_P) 2188ev_iteration (EV_P) EV_THROW
1563{ 2189{
1564 return loop_count; 2190 return loop_count;
1565} 2191}
1566 2192
1567unsigned int 2193unsigned int
1568ev_depth (EV_P) 2194ev_depth (EV_P) EV_THROW
1569{ 2195{
1570 return loop_depth; 2196 return loop_depth;
1571} 2197}
1572 2198
1573void 2199void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2201{
1576 io_blocktime = interval; 2202 io_blocktime = interval;
1577} 2203}
1578 2204
1579void 2205void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2207{
1582 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1583} 2209}
1584 2210
1585void 2211void
1586ev_set_userdata (EV_P_ void *data) 2212ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2213{
1588 userdata = data; 2214 userdata = data;
1589} 2215}
1590 2216
1591void * 2217void *
1592ev_userdata (EV_P) 2218ev_userdata (EV_P) EV_THROW
1593{ 2219{
1594 return userdata; 2220 return userdata;
1595} 2221}
1596 2222
2223void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1598{ 2225{
1599 invoke_cb = invoke_pending_cb; 2226 invoke_cb = invoke_pending_cb;
1600} 2227}
1601 2228
2229void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2231{
1604 release_cb = release; 2232 release_cb = release;
1605 acquire_cb = acquire; 2233 acquire_cb = acquire;
1606} 2234}
1607#endif 2235#endif
1608 2236
1609/* initialise a loop structure, must be zero-initialised */ 2237/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2238static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2240{
1613 if (!backend) 2241 if (!backend)
1614 { 2242 {
2243 origflags = flags;
2244
1615#if EV_USE_REALTIME 2245#if EV_USE_REALTIME
1616 if (!have_realtime) 2246 if (!have_realtime)
1617 { 2247 {
1618 struct timespec ts; 2248 struct timespec ts;
1619 2249
… …
1641 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2272 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2275
1646 ev_rt_now = ev_time (); 2276 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2277 mn_now = get_clock ();
1648 now_floor = mn_now; 2278 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2279 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2280#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2281 invoke_cb = ev_invoke_pending;
1652#endif 2282#endif
1653 2283
1654 io_blocktime = 0.; 2284 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2285 timeout_blocktime = 0.;
1656 backend = 0; 2286 backend = 0;
1657 backend_fd = -1; 2287 backend_fd = -1;
1658 sig_pending = 0; 2288 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2289#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2290 async_pending = 0;
1661#endif 2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
1662#if EV_USE_INOTIFY 2294#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2296#endif
1665#if EV_USE_SIGNALFD 2297#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2299#endif
1668 2300
1669 if (!(flags & 0x0000ffffU)) 2301 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1671 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1672#if EV_USE_PORT 2307#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2309#endif
1675#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2328#endif
1694 } 2329 }
1695} 2330}
1696 2331
1697/* free up a loop structure */ 2332/* free up a loop structure */
1698static void noinline 2333void ecb_cold
1699loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1700{ 2335{
1701 int i; 2336 int i;
2337
2338#if EV_MULTIPLICITY
2339 /* mimic free (0) */
2340 if (!EV_A)
2341 return;
2342#endif
2343
2344#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt))
2347 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING;
2350 }
2351#endif
2352
2353#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev))
2355 {
2356 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev);
2358 }
2359#endif
1702 2360
1703 if (ev_is_active (&pipe_w)) 2361 if (ev_is_active (&pipe_w))
1704 { 2362 {
1705 /*ev_ref (EV_A);*/ 2363 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1728#endif 2386#endif
1729 2387
1730 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1731 close (backend_fd); 2389 close (backend_fd);
1732 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1733#if EV_USE_PORT 2394#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2396#endif
1736#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1765#endif 2426#endif
1766#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1768#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1769 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1773#endif 2437#endif
1774 2438
1775 backend = 0; 2439 backend = 0;
2440
2441#if EV_MULTIPLICITY
2442 if (ev_is_default_loop (EV_A))
2443#endif
2444 ev_default_loop_ptr = 0;
2445#if EV_MULTIPLICITY
2446 else
2447 ev_free (EV_A);
2448#endif
1776} 2449}
1777 2450
1778#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1780#endif 2453#endif
… …
1795 infy_fork (EV_A); 2468 infy_fork (EV_A);
1796#endif 2469#endif
1797 2470
1798 if (ev_is_active (&pipe_w)) 2471 if (ev_is_active (&pipe_w))
1799 { 2472 {
1800 /* this "locks" the handlers against writing to the pipe */ 2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2474
1807 ev_ref (EV_A); 2475 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2476 ev_io_stop (EV_A_ &pipe_w);
1809 2477
1810#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
… …
1828 postfork = 0; 2496 postfork = 0;
1829} 2497}
1830 2498
1831#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1832 2500
1833struct ev_loop * 2501struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1835{ 2503{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2505
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1840 2508
1841 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1842 return EV_A; 2510 return EV_A;
1843 2511
2512 ev_free (EV_A);
1844 return 0; 2513 return 0;
1845} 2514}
1846 2515
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2516#endif /* multiplicity */
1860 2517
1861#if EV_VERIFY 2518#if EV_VERIFY
1862static void noinline 2519static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1864{ 2521{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2523
1867 if (w->pending) 2524 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2526}
1870 2527
1871static void noinline 2528static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2530{
1874 int i; 2531 int i;
1875 2532
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2538
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2540 }
1884} 2541}
1885 2542
1886static void noinline 2543static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1888{ 2545{
1889 while (cnt--) 2546 while (cnt--)
1890 { 2547 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2550 }
1894} 2551}
1895#endif 2552#endif
1896 2553
1897#if EV_FEATURE_API 2554#if EV_FEATURE_API
1898void 2555void ecb_cold
1899ev_verify (EV_P) 2556ev_verify (EV_P) EV_THROW
1900{ 2557{
1901#if EV_VERIFY 2558#if EV_VERIFY
1902 int i; 2559 int i, j;
1903 WL w; 2560 WL w, w2;
1904 2561
1905 assert (activecnt >= -1); 2562 assert (activecnt >= -1);
1906 2563
1907 assert (fdchangemax >= fdchangecnt); 2564 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2565 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2567
1911 assert (anfdmax >= 0); 2568 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2569 for (i = j = 0; i < anfdmax; ++i)
1913 for (w = anfds [i].head; w; w = w->next) 2570 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2571 {
1915 verify_watcher (EV_A_ (W)w); 2572 verify_watcher (EV_A_ (W)w);
2573
2574 if (++j & 1)
2575 w2 = w2->next;
2576
2577 assert (("libev: io watcher list contains a loop", w != w2));
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2580 }
1919 2581
1920 assert (timermax >= timercnt); 2582 assert (timermax >= timercnt);
… …
1938#if EV_FORK_ENABLE 2600#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2601 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2602 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2603#endif
1942 2604
2605#if EV_CLEANUP_ENABLE
2606 assert (cleanupmax >= cleanupcnt);
2607 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2608#endif
2609
1943#if EV_ASYNC_ENABLE 2610#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2611 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2612 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2613#endif
1947 2614
… …
1964#endif 2631#endif
1965} 2632}
1966#endif 2633#endif
1967 2634
1968#if EV_MULTIPLICITY 2635#if EV_MULTIPLICITY
1969struct ev_loop * 2636struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2637#else
1972int 2638int
2639#endif
1973ev_default_loop (unsigned int flags) 2640ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2641{
1976 if (!ev_default_loop_ptr) 2642 if (!ev_default_loop_ptr)
1977 { 2643 {
1978#if EV_MULTIPLICITY 2644#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2645 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 2664
1999 return ev_default_loop_ptr; 2665 return ev_default_loop_ptr;
2000} 2666}
2001 2667
2002void 2668void
2003ev_default_destroy (void) 2669ev_loop_fork (EV_P) EV_THROW
2004{ 2670{
2005#if EV_MULTIPLICITY
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */ 2671 postfork = 1; /* must be in line with ev_default_fork */
2027} 2672}
2028 2673
2029/*****************************************************************************/ 2674/*****************************************************************************/
2030 2675
2031void 2676void
… …
2033{ 2678{
2034 EV_CB_INVOKE ((W)w, revents); 2679 EV_CB_INVOKE ((W)w, revents);
2035} 2680}
2036 2681
2037unsigned int 2682unsigned int
2038ev_pending_count (EV_P) 2683ev_pending_count (EV_P) EV_THROW
2039{ 2684{
2040 int pri; 2685 int pri;
2041 unsigned int count = 0; 2686 unsigned int count = 0;
2042 2687
2043 for (pri = NUMPRI; pri--; ) 2688 for (pri = NUMPRI; pri--; )
… …
2047} 2692}
2048 2693
2049void noinline 2694void noinline
2050ev_invoke_pending (EV_P) 2695ev_invoke_pending (EV_P)
2051{ 2696{
2052 int pri; 2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2053
2054 for (pri = NUMPRI; pri--; )
2055 while (pendingcnt [pri]) 2698 while (pendingcnt [pendingpri])
2056 { 2699 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061 2701
2062 p->w->pending = 0; 2702 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 2703 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
2065 } 2705 }
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 2767 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 2768 }
2129} 2769}
2130 2770
2131#if EV_PERIODIC_ENABLE 2771#if EV_PERIODIC_ENABLE
2772
2773static void noinline
2774periodic_recalc (EV_P_ ev_periodic *w)
2775{
2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2777 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2778
2779 /* the above almost always errs on the low side */
2780 while (at <= ev_rt_now)
2781 {
2782 ev_tstamp nat = at + w->interval;
2783
2784 /* when resolution fails us, we use ev_rt_now */
2785 if (expect_false (nat == at))
2786 {
2787 at = ev_rt_now;
2788 break;
2789 }
2790
2791 at = nat;
2792 }
2793
2794 ev_at (w) = at;
2795}
2796
2132/* make periodics pending */ 2797/* make periodics pending */
2133inline_size void 2798inline_size void
2134periodics_reify (EV_P) 2799periodics_reify (EV_P)
2135{ 2800{
2136 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2155 ANHE_at_cache (periodics [HEAP0]); 2820 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 2821 downheap (periodics, periodiccnt, HEAP0);
2157 } 2822 }
2158 else if (w->interval) 2823 else if (w->interval)
2159 { 2824 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2825 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 2826 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 2827 downheap (periodics, periodiccnt, HEAP0);
2176 } 2828 }
2177 else 2829 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2830 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 2838 }
2187} 2839}
2188 2840
2189/* simply recalculate all periodics */ 2841/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2842/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 2843static void noinline ecb_cold
2192periodics_reschedule (EV_P) 2844periodics_reschedule (EV_P)
2193{ 2845{
2194 int i; 2846 int i;
2195 2847
2196 /* adjust periodics after time jump */ 2848 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2851 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 2852
2201 if (w->reschedule_cb) 2853 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2854 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 2855 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2856 periodic_recalc (EV_A_ w);
2205 2857
2206 ANHE_at_cache (periodics [i]); 2858 ANHE_at_cache (periodics [i]);
2207 } 2859 }
2208 2860
2209 reheap (periodics, periodiccnt); 2861 reheap (periodics, periodiccnt);
2210} 2862}
2211#endif 2863#endif
2212 2864
2213/* adjust all timers by a given offset */ 2865/* adjust all timers by a given offset */
2214static void noinline 2866static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 2867timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 2868{
2217 int i; 2869 int i;
2218 2870
2219 for (i = 0; i < timercnt; ++i) 2871 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 2908 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 2909 * in the unlikely event of having been preempted here.
2258 */ 2910 */
2259 for (i = 4; --i; ) 2911 for (i = 4; --i; )
2260 { 2912 {
2913 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 2914 rtmn_diff = ev_rt_now - mn_now;
2262 2915
2916 diff = odiff - rtmn_diff;
2917
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2918 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 2919 return; /* all is well */
2265 2920
2266 ev_rt_now = ev_time (); 2921 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 2922 mn_now = get_clock ();
2268 now_floor = mn_now; 2923 now_floor = mn_now;
… …
2290 2945
2291 mn_now = ev_rt_now; 2946 mn_now = ev_rt_now;
2292 } 2947 }
2293} 2948}
2294 2949
2295void 2950int
2296ev_loop (EV_P_ int flags) 2951ev_run (EV_P_ int flags)
2297{ 2952{
2298#if EV_FEATURE_API 2953#if EV_FEATURE_API
2299 ++loop_depth; 2954 ++loop_depth;
2300#endif 2955#endif
2301 2956
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2957 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 2958
2304 loop_done = EVUNLOOP_CANCEL; 2959 loop_done = EVBREAK_CANCEL;
2305 2960
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2961 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 2962
2308 do 2963 do
2309 { 2964 {
… …
2352 /* calculate blocking time */ 3007 /* calculate blocking time */
2353 { 3008 {
2354 ev_tstamp waittime = 0.; 3009 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3010 ev_tstamp sleeptime = 0.;
2356 3011
3012 /* remember old timestamp for io_blocktime calculation */
3013 ev_tstamp prev_mn_now = mn_now;
3014
3015 /* update time to cancel out callback processing overhead */
3016 time_update (EV_A_ 1e100);
3017
3018 /* from now on, we want a pipe-wake-up */
3019 pipe_write_wanted = 1;
3020
3021 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3022
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3023 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3024 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3025 waittime = MAX_BLOCKTIME;
2366 3026
2367 if (timercnt) 3027 if (timercnt)
2368 { 3028 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3029 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3030 if (waittime > to) waittime = to;
2371 } 3031 }
2372 3032
2373#if EV_PERIODIC_ENABLE 3033#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3034 if (periodiccnt)
2375 { 3035 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3036 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3037 if (waittime > to) waittime = to;
2378 } 3038 }
2379#endif 3039#endif
2380 3040
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3041 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3042 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3043 waittime = timeout_blocktime;
3044
3045 /* at this point, we NEED to wait, so we have to ensure */
3046 /* to pass a minimum nonzero value to the backend */
3047 if (expect_false (waittime < backend_mintime))
3048 waittime = backend_mintime;
2384 3049
2385 /* extra check because io_blocktime is commonly 0 */ 3050 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3051 if (expect_false (io_blocktime))
2387 { 3052 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3053 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3054
2390 if (sleeptime > waittime - backend_fudge) 3055 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3056 sleeptime = waittime - backend_mintime;
2392 3057
2393 if (expect_true (sleeptime > 0.)) 3058 if (expect_true (sleeptime > 0.))
2394 { 3059 {
2395 ev_sleep (sleeptime); 3060 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3061 waittime -= sleeptime;
… …
2399 } 3064 }
2400 3065
2401#if EV_FEATURE_API 3066#if EV_FEATURE_API
2402 ++loop_count; 3067 ++loop_count;
2403#endif 3068#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3069 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3070 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3072
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074
3075 if (pipe_write_skipped)
3076 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 }
3080
2407 3081
2408 /* update ev_rt_now, do magic */ 3082 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3083 time_update (EV_A_ waittime + sleeptime);
2410 } 3084 }
2411 3085
… …
2429 EV_INVOKE_PENDING; 3103 EV_INVOKE_PENDING;
2430 } 3104 }
2431 while (expect_true ( 3105 while (expect_true (
2432 activecnt 3106 activecnt
2433 && !loop_done 3107 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3108 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3109 ));
2436 3110
2437 if (loop_done == EVUNLOOP_ONE) 3111 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3112 loop_done = EVBREAK_CANCEL;
2439 3113
2440#if EV_FEATURE_API 3114#if EV_FEATURE_API
2441 --loop_depth; 3115 --loop_depth;
2442#endif 3116#endif
3117
3118 return activecnt;
2443} 3119}
2444 3120
2445void 3121void
2446ev_unloop (EV_P_ int how) 3122ev_break (EV_P_ int how) EV_THROW
2447{ 3123{
2448 loop_done = how; 3124 loop_done = how;
2449} 3125}
2450 3126
2451void 3127void
2452ev_ref (EV_P) 3128ev_ref (EV_P) EV_THROW
2453{ 3129{
2454 ++activecnt; 3130 ++activecnt;
2455} 3131}
2456 3132
2457void 3133void
2458ev_unref (EV_P) 3134ev_unref (EV_P) EV_THROW
2459{ 3135{
2460 --activecnt; 3136 --activecnt;
2461} 3137}
2462 3138
2463void 3139void
2464ev_now_update (EV_P) 3140ev_now_update (EV_P) EV_THROW
2465{ 3141{
2466 time_update (EV_A_ 1e100); 3142 time_update (EV_A_ 1e100);
2467} 3143}
2468 3144
2469void 3145void
2470ev_suspend (EV_P) 3146ev_suspend (EV_P) EV_THROW
2471{ 3147{
2472 ev_now_update (EV_A); 3148 ev_now_update (EV_A);
2473} 3149}
2474 3150
2475void 3151void
2476ev_resume (EV_P) 3152ev_resume (EV_P) EV_THROW
2477{ 3153{
2478 ev_tstamp mn_prev = mn_now; 3154 ev_tstamp mn_prev = mn_now;
2479 3155
2480 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3157 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3196 w->pending = 0;
2521 } 3197 }
2522} 3198}
2523 3199
2524int 3200int
2525ev_clear_pending (EV_P_ void *w) 3201ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3202{
2527 W w_ = (W)w; 3203 W w_ = (W)w;
2528 int pending = w_->pending; 3204 int pending = w_->pending;
2529 3205
2530 if (expect_true (pending)) 3206 if (expect_true (pending))
… …
2563} 3239}
2564 3240
2565/*****************************************************************************/ 3241/*****************************************************************************/
2566 3242
2567void noinline 3243void noinline
2568ev_io_start (EV_P_ ev_io *w) 3244ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3245{
2570 int fd = w->fd; 3246 int fd = w->fd;
2571 3247
2572 if (expect_false (ev_is_active (w))) 3248 if (expect_false (ev_is_active (w)))
2573 return; 3249 return;
… …
2579 3255
2580 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3257 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3258 wlist_add (&anfds[fd].head, (WL)w);
2583 3259
3260 /* common bug, apparently */
3261 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3262
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3263 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3264 w->events &= ~EV__IOFDSET;
2586 3265
2587 EV_FREQUENT_CHECK; 3266 EV_FREQUENT_CHECK;
2588} 3267}
2589 3268
2590void noinline 3269void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3270ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3271{
2593 clear_pending (EV_A_ (W)w); 3272 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3273 if (expect_false (!ev_is_active (w)))
2595 return; 3274 return;
2596 3275
… …
2599 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2600 3279
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3280 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3281 ev_stop (EV_A_ (W)w);
2603 3282
2604 fd_change (EV_A_ w->fd, 1); 3283 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3284
2606 EV_FREQUENT_CHECK; 3285 EV_FREQUENT_CHECK;
2607} 3286}
2608 3287
2609void noinline 3288void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3290{
2612 if (expect_false (ev_is_active (w))) 3291 if (expect_false (ev_is_active (w)))
2613 return; 3292 return;
2614 3293
2615 ev_at (w) += mn_now; 3294 ev_at (w) += mn_now;
… …
2629 3308
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3310}
2632 3311
2633void noinline 3312void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3314{
2636 clear_pending (EV_A_ (W)w); 3315 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3316 if (expect_false (!ev_is_active (w)))
2638 return; 3317 return;
2639 3318
… …
2659 3338
2660 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
2661} 3340}
2662 3341
2663void noinline 3342void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3344{
2666 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
3346
3347 clear_pending (EV_A_ (W)w);
2667 3348
2668 if (ev_is_active (w)) 3349 if (ev_is_active (w))
2669 { 3350 {
2670 if (w->repeat) 3351 if (w->repeat)
2671 { 3352 {
… …
2684 3365
2685 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
2686} 3367}
2687 3368
2688ev_tstamp 3369ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3370ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3371{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3373}
2693 3374
2694#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
2695void noinline 3376void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3378{
2698 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2699 return; 3380 return;
2700 3381
2701 if (w->reschedule_cb) 3382 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3383 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3384 else if (w->interval)
2704 { 3385 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3386 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3387 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3388 }
2709 else 3389 else
2710 ev_at (w) = w->offset; 3390 ev_at (w) = w->offset;
2711 3391
2712 EV_FREQUENT_CHECK; 3392 EV_FREQUENT_CHECK;
… …
2722 3402
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3404}
2725 3405
2726void noinline 3406void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3408{
2729 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2731 return; 3411 return;
2732 3412
… …
2750 3430
2751 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2752} 3432}
2753 3433
2754void noinline 3434void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3436{
2757 /* TODO: use adjustheap and recalculation */ 3437 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3438 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3439 ev_periodic_start (EV_A_ w);
2760} 3440}
… …
2765#endif 3445#endif
2766 3446
2767#if EV_SIGNAL_ENABLE 3447#if EV_SIGNAL_ENABLE
2768 3448
2769void noinline 3449void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3451{
2772 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2773 return; 3453 return;
2774 3454
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3455 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2833 sa.sa_handler = ev_sighandler; 3513 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3514 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3515 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3516 sigaction (w->signum, &sa, 0);
2837 3517
3518 if (origflags & EVFLAG_NOSIGMASK)
3519 {
2838 sigemptyset (&sa.sa_mask); 3520 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3521 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3522 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3523 }
2841#endif 3524#endif
2842 } 3525 }
2843 3526
2844 EV_FREQUENT_CHECK; 3527 EV_FREQUENT_CHECK;
2845} 3528}
2846 3529
2847void noinline 3530void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3532{
2850 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2852 return; 3535 return;
2853 3536
… …
2884#endif 3567#endif
2885 3568
2886#if EV_CHILD_ENABLE 3569#if EV_CHILD_ENABLE
2887 3570
2888void 3571void
2889ev_child_start (EV_P_ ev_child *w) 3572ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3573{
2891#if EV_MULTIPLICITY 3574#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3575 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3576#endif
2894 if (expect_false (ev_is_active (w))) 3577 if (expect_false (ev_is_active (w)))
… …
2901 3584
2902 EV_FREQUENT_CHECK; 3585 EV_FREQUENT_CHECK;
2903} 3586}
2904 3587
2905void 3588void
2906ev_child_stop (EV_P_ ev_child *w) 3589ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3590{
2908 clear_pending (EV_A_ (W)w); 3591 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3592 if (expect_false (!ev_is_active (w)))
2910 return; 3593 return;
2911 3594
… …
2986 if (!pend || pend == path) 3669 if (!pend || pend == path)
2987 break; 3670 break;
2988 3671
2989 *pend = 0; 3672 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 3673 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 3674 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 3676 }
2994 } 3677 }
2995 3678
2996 if (w->wd >= 0) 3679 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3746 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 3747 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 3748 }
3066} 3749}
3067 3750
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 3751inline_size void ecb_cold
3101ev_check_2625 (EV_P) 3752ev_check_2625 (EV_P)
3102{ 3753{
3103 /* kernels < 2.6.25 are borked 3754 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 3756 */
… …
3110} 3761}
3111 3762
3112inline_size int 3763inline_size int
3113infy_newfd (void) 3764infy_newfd (void)
3114{ 3765{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3766#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3767 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 3768 if (fd >= 0)
3118 return fd; 3769 return fd;
3119#endif 3770#endif
3120 return inotify_init (); 3771 return inotify_init ();
… …
3195#else 3846#else
3196# define EV_LSTAT(p,b) lstat (p, b) 3847# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 3848#endif
3198 3849
3199void 3850void
3200ev_stat_stat (EV_P_ ev_stat *w) 3851ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 3852{
3202 if (lstat (w->path, &w->attr) < 0) 3853 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 3854 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 3855 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 3856 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 3895 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 3896 }
3246} 3897}
3247 3898
3248void 3899void
3249ev_stat_start (EV_P_ ev_stat *w) 3900ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 3901{
3251 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
3252 return; 3903 return;
3253 3904
3254 ev_stat_stat (EV_A_ w); 3905 ev_stat_stat (EV_A_ w);
… …
3275 3926
3276 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
3277} 3928}
3278 3929
3279void 3930void
3280ev_stat_stop (EV_P_ ev_stat *w) 3931ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 3932{
3282 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3284 return; 3935 return;
3285 3936
… …
3301} 3952}
3302#endif 3953#endif
3303 3954
3304#if EV_IDLE_ENABLE 3955#if EV_IDLE_ENABLE
3305void 3956void
3306ev_idle_start (EV_P_ ev_idle *w) 3957ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 3958{
3308 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3309 return; 3960 return;
3310 3961
3311 pri_adjust (EV_A_ (W)w); 3962 pri_adjust (EV_A_ (W)w);
… …
3324 3975
3325 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3326} 3977}
3327 3978
3328void 3979void
3329ev_idle_stop (EV_P_ ev_idle *w) 3980ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 3981{
3331 clear_pending (EV_A_ (W)w); 3982 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 3983 if (expect_false (!ev_is_active (w)))
3333 return; 3984 return;
3334 3985
… …
3348} 3999}
3349#endif 4000#endif
3350 4001
3351#if EV_PREPARE_ENABLE 4002#if EV_PREPARE_ENABLE
3352void 4003void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4004ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4005{
3355 if (expect_false (ev_is_active (w))) 4006 if (expect_false (ev_is_active (w)))
3356 return; 4007 return;
3357 4008
3358 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
… …
3363 4014
3364 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
3365} 4016}
3366 4017
3367void 4018void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4019ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4020{
3370 clear_pending (EV_A_ (W)w); 4021 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4022 if (expect_false (!ev_is_active (w)))
3372 return; 4023 return;
3373 4024
… …
3386} 4037}
3387#endif 4038#endif
3388 4039
3389#if EV_CHECK_ENABLE 4040#if EV_CHECK_ENABLE
3390void 4041void
3391ev_check_start (EV_P_ ev_check *w) 4042ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4043{
3393 if (expect_false (ev_is_active (w))) 4044 if (expect_false (ev_is_active (w)))
3394 return; 4045 return;
3395 4046
3396 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
… …
3401 4052
3402 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
3403} 4054}
3404 4055
3405void 4056void
3406ev_check_stop (EV_P_ ev_check *w) 4057ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4058{
3408 clear_pending (EV_A_ (W)w); 4059 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4060 if (expect_false (!ev_is_active (w)))
3410 return; 4061 return;
3411 4062
… …
3424} 4075}
3425#endif 4076#endif
3426 4077
3427#if EV_EMBED_ENABLE 4078#if EV_EMBED_ENABLE
3428void noinline 4079void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4081{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4082 ev_run (w->other, EVRUN_NOWAIT);
3432} 4083}
3433 4084
3434static void 4085static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4086embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4087{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4088 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4089
3439 if (ev_cb (w)) 4090 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4091 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4092 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3443} 4094}
3444 4095
3445static void 4096static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4097embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4098{
… …
3451 EV_P = w->other; 4102 EV_P = w->other;
3452 4103
3453 while (fdchangecnt) 4104 while (fdchangecnt)
3454 { 4105 {
3455 fd_reify (EV_A); 4106 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4108 }
3458 } 4109 }
3459} 4110}
3460 4111
3461static void 4112static void
… …
3467 4118
3468 { 4119 {
3469 EV_P = w->other; 4120 EV_P = w->other;
3470 4121
3471 ev_loop_fork (EV_A); 4122 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4123 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4124 }
3474 4125
3475 ev_embed_start (EV_A_ w); 4126 ev_embed_start (EV_A_ w);
3476} 4127}
3477 4128
… …
3482 ev_idle_stop (EV_A_ idle); 4133 ev_idle_stop (EV_A_ idle);
3483} 4134}
3484#endif 4135#endif
3485 4136
3486void 4137void
3487ev_embed_start (EV_P_ ev_embed *w) 4138ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4139{
3489 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3490 return; 4141 return;
3491 4142
3492 { 4143 {
… …
3513 4164
3514 EV_FREQUENT_CHECK; 4165 EV_FREQUENT_CHECK;
3515} 4166}
3516 4167
3517void 4168void
3518ev_embed_stop (EV_P_ ev_embed *w) 4169ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4170{
3520 clear_pending (EV_A_ (W)w); 4171 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4172 if (expect_false (!ev_is_active (w)))
3522 return; 4173 return;
3523 4174
… …
3533} 4184}
3534#endif 4185#endif
3535 4186
3536#if EV_FORK_ENABLE 4187#if EV_FORK_ENABLE
3537void 4188void
3538ev_fork_start (EV_P_ ev_fork *w) 4189ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4190{
3540 if (expect_false (ev_is_active (w))) 4191 if (expect_false (ev_is_active (w)))
3541 return; 4192 return;
3542 4193
3543 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
… …
3548 4199
3549 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3550} 4201}
3551 4202
3552void 4203void
3553ev_fork_stop (EV_P_ ev_fork *w) 4204ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4205{
3555 clear_pending (EV_A_ (W)w); 4206 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4207 if (expect_false (!ev_is_active (w)))
3557 return; 4208 return;
3558 4209
… …
3569 4220
3570 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3571} 4222}
3572#endif 4223#endif
3573 4224
4225#if EV_CLEANUP_ENABLE
4226void
4227ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4228{
4229 if (expect_false (ev_is_active (w)))
4230 return;
4231
4232 EV_FREQUENT_CHECK;
4233
4234 ev_start (EV_A_ (W)w, ++cleanupcnt);
4235 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4236 cleanups [cleanupcnt - 1] = w;
4237
4238 /* cleanup watchers should never keep a refcount on the loop */
4239 ev_unref (EV_A);
4240 EV_FREQUENT_CHECK;
4241}
4242
4243void
4244ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4245{
4246 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w)))
4248 return;
4249
4250 EV_FREQUENT_CHECK;
4251 ev_ref (EV_A);
4252
4253 {
4254 int active = ev_active (w);
4255
4256 cleanups [active - 1] = cleanups [--cleanupcnt];
4257 ev_active (cleanups [active - 1]) = active;
4258 }
4259
4260 ev_stop (EV_A_ (W)w);
4261
4262 EV_FREQUENT_CHECK;
4263}
4264#endif
4265
3574#if EV_ASYNC_ENABLE 4266#if EV_ASYNC_ENABLE
3575void 4267void
3576ev_async_start (EV_P_ ev_async *w) 4268ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4269{
3578 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3579 return; 4271 return;
4272
4273 w->sent = 0;
3580 4274
3581 evpipe_init (EV_A); 4275 evpipe_init (EV_A);
3582 4276
3583 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3584 4278
… …
3588 4282
3589 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
3590} 4284}
3591 4285
3592void 4286void
3593ev_async_stop (EV_P_ ev_async *w) 4287ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4288{
3595 clear_pending (EV_A_ (W)w); 4289 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4290 if (expect_false (!ev_is_active (w)))
3597 return; 4291 return;
3598 4292
… …
3609 4303
3610 EV_FREQUENT_CHECK; 4304 EV_FREQUENT_CHECK;
3611} 4305}
3612 4306
3613void 4307void
3614ev_async_send (EV_P_ ev_async *w) 4308ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4309{
3616 w->sent = 1; 4310 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4311 evpipe_write (EV_A_ &async_pending);
3618} 4312}
3619#endif 4313#endif
… …
3656 4350
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4352}
3659 4353
3660void 4354void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4355ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4356{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4357 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4358
3665 if (expect_false (!once)) 4359 if (expect_false (!once))
3666 { 4360 {
… …
3687} 4381}
3688 4382
3689/*****************************************************************************/ 4383/*****************************************************************************/
3690 4384
3691#if EV_WALK_ENABLE 4385#if EV_WALK_ENABLE
3692void 4386void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4388{
3695 int i, j; 4389 int i, j;
3696 ev_watcher_list *wl, *wn; 4390 ev_watcher_list *wl, *wn;
3697 4391
3698 if (types & (EV_IO | EV_EMBED)) 4392 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4435 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4436#endif
3743 4437
3744#if EV_IDLE_ENABLE 4438#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4439 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4440 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4441 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4442 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4443#endif
3750 4444
3751#if EV_FORK_ENABLE 4445#if EV_FORK_ENABLE
… …
3804 4498
3805#if EV_MULTIPLICITY 4499#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4500 #include "ev_wrap.h"
3807#endif 4501#endif
3808 4502
3809#ifdef __cplusplus
3810}
3811#endif
3812

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