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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.419 by root, Thu Apr 12 04:10:15 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>
… …
196# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
197# endif 209# endif
198# undef EV_AVOID_STDIO 210# undef EV_AVOID_STDIO
199#endif 211#endif
200 212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
201/* 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 */
202 222
203/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 224#if defined EV_NSIG
205/* use what's provided */ 225/* use what's provided */
206#elif defined (NSIG) 226#elif defined NSIG
207# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 228#elif defined _NSIG
209# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 230#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 232#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 236#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 238#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 242#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 244#else
225# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
226/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
228# define EV_NSIG 65 248# define EV_NSIG 65
229#endif 249#endif
230 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
231#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 258# else
235# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
236# endif 260# endif
237#endif 261#endif
238 262
239#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 265# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 266# else
243# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
244# endif 268# endif
245#endif 269#endif
… …
370# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
372#endif 396#endif
373 397
374#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 401# include <sys/select.h>
377# endif 402# endif
378#endif 403#endif
379 404
380#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 406# include <sys/statfs.h>
383# include <sys/inotify.h> 407# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
403# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
404# else 428# else
405# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
406# endif 430# endif
407# endif 431# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 433#endif
416 434
417#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
418/* 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 */
419# include <stdint.h> 437# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
426# else 444# else
427# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
428# endif 446# endif
429# endif 447# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 449
435struct signalfd_siginfo 450struct signalfd_siginfo
436{ 451{
437 uint32_t ssi_signo; 452 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
439}; 454};
440# ifdef __cplusplus
441}
442# endif 455#endif
443#endif
444
445 456
446/**/ 457/**/
447 458
448#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 461#else
451# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
452#endif 463#endif
453 464
454/* 465/*
455 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 468 */
462#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 */
463 471
464#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) */
465#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) */
466 474
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;
467#if __GNUC__ >= 4 519 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
469# 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
470#else 526#else
471# define expect(expr,value) (expr) 527 #include <inttypes.h>
472# define noinline
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474# define inline
475# 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)))
476#endif 542 #endif
543#endif
477 544
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. */
478#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#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
480#define inline_size static inline 960#define inline_size ecb_inline
481 961
482#if EV_FEATURE_CODE 962#if EV_FEATURE_CODE
483# define inline_speed static inline 963# define inline_speed ecb_inline
484#else 964#else
485# define inline_speed static noinline 965# define inline_speed static noinline
486#endif 966#endif
487 967
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
505 985
506#if EV_USE_REALTIME 986#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 990#endif
511 991
512#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1007# include "ev_win32.c"
528#endif 1008#endif
529 1009
530/*****************************************************************************/ 1010/*****************************************************************************/
531 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
532#if EV_AVOID_STDIO 1102#if EV_AVOID_STDIO
533static void noinline 1103static void noinline ecb_cold
534ev_printerr (const char *msg) 1104ev_printerr (const char *msg)
535{ 1105{
536 write (STDERR_FILENO, msg, strlen (msg)); 1106 write (STDERR_FILENO, msg, strlen (msg));
537} 1107}
538#endif 1108#endif
539 1109
540static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg);
541 1111
542void 1112void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg))
544{ 1114{
545 syserr_cb = cb; 1115 syserr_cb = cb;
546} 1116}
547 1117
548static void noinline 1118static void noinline ecb_cold
549ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
550{ 1120{
551 if (!msg) 1121 if (!msg)
552 msg = "(libev) system error"; 1122 msg = "(libev) system error";
553 1123
554 if (syserr_cb) 1124 if (syserr_cb)
555 syserr_cb (msg); 1125 syserr_cb (msg);
556 else 1126 else
557 { 1127 {
558#if EV_AVOID_STDIO 1128#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1129 ev_printerr (msg);
562 ev_printerr (": "); 1130 ev_printerr (": ");
563 ev_printerr (err); 1131 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1132 ev_printerr ("\n");
565#else 1133#else
566 perror (msg); 1134 perror (msg);
567#endif 1135#endif
568 abort (); 1136 abort ();
… …
588#endif 1156#endif
589} 1157}
590 1158
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
592 1160
593void 1161void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size))
595{ 1163{
596 alloc = cb; 1164 alloc = cb;
597} 1165}
598 1166
… …
602 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
603 1171
604 if (!ptr && size) 1172 if (!ptr && size)
605 { 1173 {
606#if EV_AVOID_STDIO 1174#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1176#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1178#endif
611 abort (); 1179 abort ();
612 } 1180 }
613 1181
614 return ptr; 1182 return ptr;
… …
631 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 */
632 unsigned char unused; 1200 unsigned char unused;
633#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1203#endif
636#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
638#endif 1209#endif
639} ANFD; 1210} ANFD;
640 1211
641/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
642typedef struct 1213typedef struct
… …
684 #undef VAR 1255 #undef VAR
685 }; 1256 };
686 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
687 1258
688 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
689 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 */
690 1261
691#else 1262#else
692 1263
693 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 */
694 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1266 #include "ev_vars.h"
696 #undef VAR 1267 #undef VAR
697 1268
698 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1281#endif
711 1282
712#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
713 1284
714/*****************************************************************************/ 1285/*****************************************************************************/
715 1286
716#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1288ev_tstamp
… …
761 if (delay > 0.) 1332 if (delay > 0.)
762 { 1333 {
763#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
764 struct timespec ts; 1335 struct timespec ts;
765 1336
766 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1339#elif defined _WIN32
771 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
772#else 1341#else
773 struct timeval tv; 1342 struct timeval tv;
774 1343
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* 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 */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
782#endif 1349#endif
783 } 1350 }
784} 1351}
785 1352
786/*****************************************************************************/ 1353/*****************************************************************************/
787 1354
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1356
790/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1359inline_size int
793array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
794{ 1361{
795 int ncur = cur + 1; 1362 int ncur = cur + 1;
796 1363
797 do 1364 do
798 ncur <<= 1; 1365 ncur <<= 1;
799 while (cnt > ncur); 1366 while (cnt > ncur);
800 1367
801 /* 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 */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1370 {
804 ncur *= elem; 1371 ncur *= elem;
805 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);
806 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1375 }
809 1376
810 return ncur; 1377 return ncur;
811} 1378}
812 1379
813static noinline void * 1380static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1382{
816 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
818} 1385}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1389
823#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
825 { \ 1392 { \
826 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1397 }
831 1398
… …
931inline_size void 1498inline_size void
932fd_reify (EV_P) 1499fd_reify (EV_P)
933{ 1500{
934 int i; 1501 int i;
935 1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
1527
936 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
937 { 1529 {
938 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
940 ev_io *w; 1532 ev_io *w;
941 1533
942 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
943 1536
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1538
947#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1540 {
950 unsigned long arg; 1541 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1544 anfd->events |= (unsigned char)w->events;
1545
1546 if (o_events != anfd->events)
1547 o_reify = EV__IOFDSET; /* actually |= */
953 } 1548 }
954#endif
955 1549
956 { 1550 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1552 }
967 1553
968 fdchangecnt = 0; 1554 fdchangecnt = 0;
969} 1555}
970 1556
… …
982 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
983 } 1569 }
984} 1570}
985 1571
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1573inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
989{ 1575{
990 ev_io *w; 1576 ev_io *w;
991 1577
992 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1582 }
997} 1583}
998 1584
999/* check whether the given fd is actually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1586inline_size int ecb_cold
1001fd_valid (int fd) 1587fd_valid (int fd)
1002{ 1588{
1003#ifdef _WIN32 1589#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1591#else
1006 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
1007#endif 1593#endif
1008} 1594}
1009 1595
1010/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
1011static void noinline 1597static void noinline ecb_cold
1012fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
1013{ 1599{
1014 int fd; 1600 int fd;
1015 1601
1016 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
1020} 1606}
1021 1607
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1609static void noinline ecb_cold
1024fd_enomem (EV_P) 1610fd_enomem (EV_P)
1025{ 1611{
1026 int fd; 1612 int fd;
1027 1613
1028 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
… …
1063} 1649}
1064 1650
1065/*****************************************************************************/ 1651/*****************************************************************************/
1066 1652
1067/* 1653/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1654 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1655 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
1071 */ 1657 */
1072 1658
1073/* 1659/*
… …
1223 1809
1224/*****************************************************************************/ 1810/*****************************************************************************/
1225 1811
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 1813
1228static void noinline 1814static void noinline ecb_cold
1229evpipe_init (EV_P) 1815evpipe_init (EV_P)
1230{ 1816{
1231 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1232 { 1818 {
1233# if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
… …
1255 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 } 1843 }
1258} 1844}
1259 1845
1260inline_size void 1846inline_speed void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{ 1848{
1263 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1264 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1265 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269 1867
1270#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1271 if (evfd >= 0) 1869 if (evfd >= 0)
1272 { 1870 {
1273 uint64_t counter = 1; 1871 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1275 } 1873 }
1276 else 1874 else
1277#endif 1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1278 write (evpipe [1], &dummy, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1279 1886
1280 errno = old_errno; 1887 errno = old_errno;
1281 } 1888 }
1282} 1889}
1283 1890
… …
1286static void 1893static void
1287pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1288{ 1895{
1289 int i; 1896 int i;
1290 1897
1898 if (revents & EV_READ)
1899 {
1291#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1292 if (evfd >= 0) 1901 if (evfd >= 0)
1293 { 1902 {
1294 uint64_t counter; 1903 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1296 } 1905 }
1297 else 1906 else
1298#endif 1907#endif
1299 { 1908 {
1300 char dummy; 1909 char dummy;
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1301 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1302 } 1913 }
1303 1914
1915 pipe_write_skipped = 0;
1916
1917#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 1918 if (sig_pending)
1305 { 1919 {
1306 sig_pending = 0; 1920 sig_pending = 0;
1307 1921
1308 for (i = EV_NSIG - 1; i--; ) 1922 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 1923 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 1924 ev_feed_signal_event (EV_A_ i + 1);
1311 } 1925 }
1926#endif
1312 1927
1313#if EV_ASYNC_ENABLE 1928#if EV_ASYNC_ENABLE
1314 if (async_pending) 1929 if (async_pending)
1315 { 1930 {
1316 async_pending = 0; 1931 async_pending = 0;
… …
1325#endif 1940#endif
1326} 1941}
1327 1942
1328/*****************************************************************************/ 1943/*****************************************************************************/
1329 1944
1945void
1946ev_feed_signal (int signum)
1947{
1948#if EV_MULTIPLICITY
1949 EV_P = signals [signum - 1].loop;
1950
1951 if (!EV_A)
1952 return;
1953#endif
1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending);
1960}
1961
1330static void 1962static void
1331ev_sighandler (int signum) 1963ev_sighandler (int signum)
1332{ 1964{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 1965#ifdef _WIN32
1338 signal (signum, ev_sighandler); 1966 signal (signum, ev_sighandler);
1339#endif 1967#endif
1340 1968
1341 signals [signum - 1].pending = 1; 1969 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 1970}
1344 1971
1345void noinline 1972void noinline
1346ev_feed_signal_event (EV_P_ int signum) 1973ev_feed_signal_event (EV_P_ int signum)
1347{ 1974{
… …
1447 2074
1448#endif 2075#endif
1449 2076
1450/*****************************************************************************/ 2077/*****************************************************************************/
1451 2078
2079#if EV_USE_IOCP
2080# include "ev_iocp.c"
2081#endif
1452#if EV_USE_PORT 2082#if EV_USE_PORT
1453# include "ev_port.c" 2083# include "ev_port.c"
1454#endif 2084#endif
1455#if EV_USE_KQUEUE 2085#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2086# include "ev_kqueue.c"
… …
1463#endif 2093#endif
1464#if EV_USE_SELECT 2094#if EV_USE_SELECT
1465# include "ev_select.c" 2095# include "ev_select.c"
1466#endif 2096#endif
1467 2097
1468int 2098int ecb_cold
1469ev_version_major (void) 2099ev_version_major (void)
1470{ 2100{
1471 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1472} 2102}
1473 2103
1474int 2104int ecb_cold
1475ev_version_minor (void) 2105ev_version_minor (void)
1476{ 2106{
1477 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1478} 2108}
1479 2109
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2111int inline_size ecb_cold
1482enable_secure (void) 2112enable_secure (void)
1483{ 2113{
1484#ifdef _WIN32 2114#ifdef _WIN32
1485 return 0; 2115 return 0;
1486#else 2116#else
1487 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2118 || getgid () != getegid ();
1489#endif 2119#endif
1490} 2120}
1491 2121
1492unsigned int 2122unsigned int ecb_cold
1493ev_supported_backends (void) 2123ev_supported_backends (void)
1494{ 2124{
1495 unsigned int flags = 0; 2125 unsigned int flags = 0;
1496 2126
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2132
1503 return flags; 2133 return flags;
1504} 2134}
1505 2135
1506unsigned int 2136unsigned int ecb_cold
1507ev_recommended_backends (void) 2137ev_recommended_backends (void)
1508{ 2138{
1509 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1510 2140
1511#ifndef __NetBSD__ 2141#ifndef __NetBSD__
… …
1523#endif 2153#endif
1524 2154
1525 return flags; 2155 return flags;
1526} 2156}
1527 2157
1528unsigned int 2158unsigned int ecb_cold
1529ev_embeddable_backends (void) 2159ev_embeddable_backends (void)
1530{ 2160{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2162
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2165 flags &= ~EVBACKEND_EPOLL;
1536 2166
1537 return flags; 2167 return flags;
1538} 2168}
1539 2169
1540unsigned int 2170unsigned int
… …
1578ev_userdata (EV_P) 2208ev_userdata (EV_P)
1579{ 2209{
1580 return userdata; 2210 return userdata;
1581} 2211}
1582 2212
2213void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{ 2215{
1585 invoke_cb = invoke_pending_cb; 2216 invoke_cb = invoke_pending_cb;
1586} 2217}
1587 2218
2219void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{ 2221{
1590 release_cb = release; 2222 release_cb = release;
1591 acquire_cb = acquire; 2223 acquire_cb = acquire;
1592} 2224}
1593#endif 2225#endif
1594 2226
1595/* initialise a loop structure, must be zero-initialised */ 2227/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2228static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags)
1598{ 2230{
1599 if (!backend) 2231 if (!backend)
1600 { 2232 {
2233 origflags = flags;
2234
1601#if EV_USE_REALTIME 2235#if EV_USE_REALTIME
1602 if (!have_realtime) 2236 if (!have_realtime)
1603 { 2237 {
1604 struct timespec ts; 2238 struct timespec ts;
1605 2239
… …
1627 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2262 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2265
1632 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2267 mn_now = get_clock ();
1634 now_floor = mn_now; 2268 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2269 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2270#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2271 invoke_cb = ev_invoke_pending;
1638#endif 2272#endif
1639 2273
1640 io_blocktime = 0.; 2274 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2275 timeout_blocktime = 0.;
1642 backend = 0; 2276 backend = 0;
1643 backend_fd = -1; 2277 backend_fd = -1;
1644 sig_pending = 0; 2278 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2279#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2280 async_pending = 0;
1647#endif 2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
1648#if EV_USE_INOTIFY 2284#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2286#endif
1651#if EV_USE_SIGNALFD 2287#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2289#endif
1654 2290
1655 if (!(flags & 0x0000ffffU)) 2291 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1657 2293
2294#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif
1658#if EV_USE_PORT 2297#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2299#endif
1661#if EV_USE_KQUEUE 2300#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2318#endif
1680 } 2319 }
1681} 2320}
1682 2321
1683/* free up a loop structure */ 2322/* free up a loop structure */
1684static void noinline 2323void ecb_cold
1685loop_destroy (EV_P) 2324ev_loop_destroy (EV_P)
1686{ 2325{
1687 int i; 2326 int i;
2327
2328#if EV_MULTIPLICITY
2329 /* mimic free (0) */
2330 if (!EV_A)
2331 return;
2332#endif
2333
2334#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt))
2337 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING;
2340 }
2341#endif
2342
2343#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev))
2345 {
2346 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev);
2348 }
2349#endif
1688 2350
1689 if (ev_is_active (&pipe_w)) 2351 if (ev_is_active (&pipe_w))
1690 { 2352 {
1691 /*ev_ref (EV_A);*/ 2353 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2354 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1714#endif 2376#endif
1715 2377
1716 if (backend_fd >= 0) 2378 if (backend_fd >= 0)
1717 close (backend_fd); 2379 close (backend_fd);
1718 2380
2381#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif
1719#if EV_USE_PORT 2384#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2386#endif
1722#if EV_USE_KQUEUE 2387#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2415 array_free (periodic, EMPTY);
1751#endif 2416#endif
1752#if EV_FORK_ENABLE 2417#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2418 array_free (fork, EMPTY);
1754#endif 2419#endif
2420#if EV_CLEANUP_ENABLE
2421 array_free (cleanup, EMPTY);
2422#endif
1755 array_free (prepare, EMPTY); 2423 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2424 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2425#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2426 array_free (async, EMPTY);
1759#endif 2427#endif
1760 2428
1761 backend = 0; 2429 backend = 0;
2430
2431#if EV_MULTIPLICITY
2432 if (ev_is_default_loop (EV_A))
2433#endif
2434 ev_default_loop_ptr = 0;
2435#if EV_MULTIPLICITY
2436 else
2437 ev_free (EV_A);
2438#endif
1762} 2439}
1763 2440
1764#if EV_USE_INOTIFY 2441#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2442inline_size void infy_fork (EV_P);
1766#endif 2443#endif
… …
1781 infy_fork (EV_A); 2458 infy_fork (EV_A);
1782#endif 2459#endif
1783 2460
1784 if (ev_is_active (&pipe_w)) 2461 if (ev_is_active (&pipe_w))
1785 { 2462 {
1786 /* this "locks" the handlers against writing to the pipe */ 2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 2464
1793 ev_ref (EV_A); 2465 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2466 ev_io_stop (EV_A_ &pipe_w);
1795 2467
1796#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
… …
1814 postfork = 0; 2486 postfork = 0;
1815} 2487}
1816 2488
1817#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1818 2490
1819struct ev_loop * 2491struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags)
1821{ 2493{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2495
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
1826 2498
1827 if (ev_backend (EV_A)) 2499 if (ev_backend (EV_A))
1828 return EV_A; 2500 return EV_A;
1829 2501
2502 ev_free (EV_A);
1830 return 0; 2503 return 0;
1831} 2504}
1832 2505
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 2506#endif /* multiplicity */
1846 2507
1847#if EV_VERIFY 2508#if EV_VERIFY
1848static void noinline 2509static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1850{ 2511{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2513
1853 if (w->pending) 2514 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2516}
1856 2517
1857static void noinline 2518static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2520{
1860 int i; 2521 int i;
1861 2522
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2528
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2530 }
1870} 2531}
1871 2532
1872static void noinline 2533static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1874{ 2535{
1875 while (cnt--) 2536 while (cnt--)
1876 { 2537 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2540 }
1880} 2541}
1881#endif 2542#endif
1882 2543
1883#if EV_FEATURE_API 2544#if EV_FEATURE_API
1884void 2545void ecb_cold
1885ev_verify (EV_P) 2546ev_verify (EV_P)
1886{ 2547{
1887#if EV_VERIFY 2548#if EV_VERIFY
1888 int i; 2549 int i;
1889 WL w; 2550 WL w;
… …
1924#if EV_FORK_ENABLE 2585#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2586 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2587 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2588#endif
1928 2589
2590#if EV_CLEANUP_ENABLE
2591 assert (cleanupmax >= cleanupcnt);
2592 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2593#endif
2594
1929#if EV_ASYNC_ENABLE 2595#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2596 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2597 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2598#endif
1933 2599
… …
1950#endif 2616#endif
1951} 2617}
1952#endif 2618#endif
1953 2619
1954#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
1955struct ev_loop * 2621struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 2622#else
1958int 2623int
2624#endif
1959ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags)
1960#endif
1961{ 2626{
1962 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
1963 { 2628 {
1964#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2649
1985 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
1986} 2651}
1987 2652
1988void 2653void
1989ev_default_destroy (void) 2654ev_loop_fork (EV_P)
1990{ 2655{
1991#if EV_MULTIPLICITY
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */ 2656 postfork = 1; /* must be in line with ev_default_fork */
2013} 2657}
2014 2658
2015/*****************************************************************************/ 2659/*****************************************************************************/
2016 2660
2017void 2661void
… …
2039 2683
2040 for (pri = NUMPRI; pri--; ) 2684 for (pri = NUMPRI; pri--; )
2041 while (pendingcnt [pri]) 2685 while (pendingcnt [pri])
2042 { 2686 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2044
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047 2688
2048 p->w->pending = 0; 2689 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 2690 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
2051 } 2692 }
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 2754 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 2755 }
2115} 2756}
2116 2757
2117#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2759
2760static void noinline
2761periodic_recalc (EV_P_ ev_periodic *w)
2762{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2782}
2783
2118/* make periodics pending */ 2784/* make periodics pending */
2119inline_size void 2785inline_size void
2120periodics_reify (EV_P) 2786periodics_reify (EV_P)
2121{ 2787{
2122 EV_FREQUENT_CHECK; 2788 EV_FREQUENT_CHECK;
… …
2141 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
2143 } 2809 }
2144 else if (w->interval) 2810 else if (w->interval)
2145 { 2811 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2812 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 2813 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
2162 } 2815 }
2163 else 2816 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 2824 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 2825 }
2173} 2826}
2174 2827
2175/* simply recalculate all periodics */ 2828/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 2830static void noinline ecb_cold
2178periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
2179{ 2832{
2180 int i; 2833 int i;
2181 2834
2182 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 2839
2187 if (w->reschedule_cb) 2840 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 2842 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2843 periodic_recalc (EV_A_ w);
2191 2844
2192 ANHE_at_cache (periodics [i]); 2845 ANHE_at_cache (periodics [i]);
2193 } 2846 }
2194 2847
2195 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
2196} 2849}
2197#endif 2850#endif
2198 2851
2199/* adjust all timers by a given offset */ 2852/* adjust all timers by a given offset */
2200static void noinline 2853static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 2855{
2203 int i; 2856 int i;
2204 2857
2205 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 2895 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
2244 */ 2897 */
2245 for (i = 4; --i; ) 2898 for (i = 4; --i; )
2246 { 2899 {
2900 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
2248 2902
2903 diff = odiff - rtmn_diff;
2904
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 2906 return; /* all is well */
2251 2907
2252 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 2909 mn_now = get_clock ();
2254 now_floor = mn_now; 2910 now_floor = mn_now;
… …
2276 2932
2277 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
2278 } 2934 }
2279} 2935}
2280 2936
2281void 2937int
2282ev_loop (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
2283{ 2939{
2284#if EV_FEATURE_API 2940#if EV_FEATURE_API
2285 ++loop_depth; 2941 ++loop_depth;
2286#endif 2942#endif
2287 2943
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2944 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 2945
2290 loop_done = EVUNLOOP_CANCEL; 2946 loop_done = EVBREAK_CANCEL;
2291 2947
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2948 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 2949
2294 do 2950 do
2295 { 2951 {
… …
2338 /* calculate blocking time */ 2994 /* calculate blocking time */
2339 { 2995 {
2340 ev_tstamp waittime = 0.; 2996 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 2997 ev_tstamp sleeptime = 0.;
2342 2998
2999 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now;
3001
3002 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100);
3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3011 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3012 waittime = MAX_BLOCKTIME;
2352 3013
2353 if (timercnt) 3014 if (timercnt)
2354 { 3015 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2357 } 3018 }
2358 3019
2359#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3021 if (periodiccnt)
2361 { 3022 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2364 } 3025 }
2365#endif 3026#endif
2366 3027
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
3031
3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2370 3036
2371 /* extra check because io_blocktime is commonly 0 */ 3037 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3038 if (expect_false (io_blocktime))
2373 { 3039 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3041
2376 if (sleeptime > waittime - backend_fudge) 3042 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3043 sleeptime = waittime - backend_mintime;
2378 3044
2379 if (expect_true (sleeptime > 0.)) 3045 if (expect_true (sleeptime > 0.))
2380 { 3046 {
2381 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3048 waittime -= sleeptime;
… …
2385 } 3051 }
2386 3052
2387#if EV_FEATURE_API 3053#if EV_FEATURE_API
2388 ++loop_count; 3054 ++loop_count;
2389#endif 3055#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
2393 3068
2394 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2396 } 3071 }
2397 3072
… …
2415 EV_INVOKE_PENDING; 3090 EV_INVOKE_PENDING;
2416 } 3091 }
2417 while (expect_true ( 3092 while (expect_true (
2418 activecnt 3093 activecnt
2419 && !loop_done 3094 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3096 ));
2422 3097
2423 if (loop_done == EVUNLOOP_ONE) 3098 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
2425 3100
2426#if EV_FEATURE_API 3101#if EV_FEATURE_API
2427 --loop_depth; 3102 --loop_depth;
2428#endif 3103#endif
3104
3105 return activecnt;
2429} 3106}
2430 3107
2431void 3108void
2432ev_unloop (EV_P_ int how) 3109ev_break (EV_P_ int how)
2433{ 3110{
2434 loop_done = how; 3111 loop_done = how;
2435} 3112}
2436 3113
2437void 3114void
… …
2585 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2586 3263
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3264 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3265 ev_stop (EV_A_ (W)w);
2589 3266
2590 fd_change (EV_A_ w->fd, 1); 3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3268
2592 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2593} 3270}
2594 3271
2595void noinline 3272void noinline
… …
2648 3325
2649void noinline 3326void noinline
2650ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w)
2651{ 3328{
2652 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2653 3332
2654 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2655 { 3334 {
2656 if (w->repeat) 3335 if (w->repeat)
2657 { 3336 {
… …
2687 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3368 else if (w->interval)
2690 { 3369 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3370 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 3371 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3372 }
2695 else 3373 else
2696 ev_at (w) = w->offset; 3374 ev_at (w) = w->offset;
2697 3375
2698 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
… …
2819 sa.sa_handler = ev_sighandler; 3497 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3498 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3500 sigaction (w->signum, &sa, 0);
2823 3501
3502 if (origflags & EVFLAG_NOSIGMASK)
3503 {
2824 sigemptyset (&sa.sa_mask); 3504 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3505 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3506 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3507 }
2827#endif 3508#endif
2828 } 3509 }
2829 3510
2830 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2831} 3512}
… …
2972 if (!pend || pend == path) 3653 if (!pend || pend == path)
2973 break; 3654 break;
2974 3655
2975 *pend = 0; 3656 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 3658 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 3660 }
2980 } 3661 }
2981 3662
2982 if (w->wd >= 0) 3663 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 3731 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 3732 }
3052} 3733}
3053 3734
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 3735inline_size void ecb_cold
3087ev_check_2625 (EV_P) 3736ev_check_2625 (EV_P)
3088{ 3737{
3089 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 3740 */
… …
3096} 3745}
3097 3746
3098inline_size int 3747inline_size int
3099infy_newfd (void) 3748infy_newfd (void)
3100{ 3749{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 3752 if (fd >= 0)
3104 return fd; 3753 return fd;
3105#endif 3754#endif
3106 return inotify_init (); 3755 return inotify_init ();
… …
3412 4061
3413#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
3414void noinline 4063void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w)
3416{ 4065{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4066 ev_run (w->other, EVRUN_NOWAIT);
3418} 4067}
3419 4068
3420static void 4069static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4070embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4071{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4072 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4073
3425 if (ev_cb (w)) 4074 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4075 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4076 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4077 ev_run (w->other, EVRUN_NOWAIT);
3429} 4078}
3430 4079
3431static void 4080static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4081embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4082{
… …
3437 EV_P = w->other; 4086 EV_P = w->other;
3438 4087
3439 while (fdchangecnt) 4088 while (fdchangecnt)
3440 { 4089 {
3441 fd_reify (EV_A); 4090 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4091 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4092 }
3444 } 4093 }
3445} 4094}
3446 4095
3447static void 4096static void
… …
3453 4102
3454 { 4103 {
3455 EV_P = w->other; 4104 EV_P = w->other;
3456 4105
3457 ev_loop_fork (EV_A); 4106 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4108 }
3460 4109
3461 ev_embed_start (EV_A_ w); 4110 ev_embed_start (EV_A_ w);
3462} 4111}
3463 4112
… …
3555 4204
3556 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3557} 4206}
3558#endif 4207#endif
3559 4208
4209#if EV_CLEANUP_ENABLE
4210void
4211ev_cleanup_start (EV_P_ ev_cleanup *w)
4212{
4213 if (expect_false (ev_is_active (w)))
4214 return;
4215
4216 EV_FREQUENT_CHECK;
4217
4218 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4220 cleanups [cleanupcnt - 1] = w;
4221
4222 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK;
4225}
4226
4227void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w)
4229{
4230 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w)))
4232 return;
4233
4234 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A);
4236
4237 {
4238 int active = ev_active (w);
4239
4240 cleanups [active - 1] = cleanups [--cleanupcnt];
4241 ev_active (cleanups [active - 1]) = active;
4242 }
4243
4244 ev_stop (EV_A_ (W)w);
4245
4246 EV_FREQUENT_CHECK;
4247}
4248#endif
4249
3560#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3561void 4251void
3562ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w)
3563{ 4253{
3564 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3565 return; 4255 return;
4256
4257 w->sent = 0;
3566 4258
3567 evpipe_init (EV_A); 4259 evpipe_init (EV_A);
3568 4260
3569 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3570 4262
… …
3673} 4365}
3674 4366
3675/*****************************************************************************/ 4367/*****************************************************************************/
3676 4368
3677#if EV_WALK_ENABLE 4369#if EV_WALK_ENABLE
3678void 4370void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{ 4372{
3681 int i, j; 4373 int i, j;
3682 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3683 4375
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4420#endif
3729 4421
3730#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4427#endif
3736 4428
3737#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3790 4482
3791#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3793#endif 4485#endif
3794 4486
3795#ifdef __cplusplus
3796}
3797#endif
3798

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