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Comparing libev/ev.c (file contents):
Revision 1.348 by root, Fri Oct 15 22:48:25 2010 UTC vs.
Revision 1.429 by root, Tue May 8 15:50:49 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
194# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
199#endif 212#endif
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 428# define EFD_CLOEXEC O_CLOEXEC
412# else 429# else
413# define EFD_CLOEXEC 02000000 430# define EFD_CLOEXEC 02000000
414# endif 431# endif
415# endif 432# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 433EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 434#endif
424 435
425#if EV_USE_SIGNALFD 436#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 437/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 438# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 444# define SFD_CLOEXEC O_CLOEXEC
434# else 445# else
435# define SFD_CLOEXEC 02000000 446# define SFD_CLOEXEC 02000000
436# endif 447# endif
437# endif 448# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 449EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 450
443struct signalfd_siginfo 451struct signalfd_siginfo
444{ 452{
445 uint32_t ssi_signo; 453 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 454 char pad[128 - sizeof (uint32_t)];
447}; 455};
448# ifdef __cplusplus
449}
450# endif
451#endif 456#endif
452 457
453/**/ 458/**/
454 459
455#if EV_VERIFY >= 3 460#if EV_VERIFY >= 3
… …
457#else 462#else
458# define EV_FREQUENT_CHECK do { } while (0) 463# define EV_FREQUENT_CHECK do { } while (0)
459#endif 464#endif
460 465
461/* 466/*
462 * This is used to avoid floating point rounding problems. 467 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 468 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 469 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
471/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 472
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 473#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 474#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 475
474#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_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 477#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 478
479/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
480/* ECB.H BEGIN */
481/*
482 * libecb - http://software.schmorp.de/pkg/libecb
483 *
484 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
485 * Copyright (©) 2011 Emanuele Giaquinta
486 * All rights reserved.
487 *
488 * Redistribution and use in source and binary forms, with or without modifica-
489 * tion, are permitted provided that the following conditions are met:
490 *
491 * 1. Redistributions of source code must retain the above copyright notice,
492 * this list of conditions and the following disclaimer.
493 *
494 * 2. Redistributions in binary form must reproduce the above copyright
495 * notice, this list of conditions and the following disclaimer in the
496 * documentation and/or other materials provided with the distribution.
497 *
498 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
499 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
500 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
501 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
502 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
503 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
504 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
505 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
506 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
507 * OF THE POSSIBILITY OF SUCH DAMAGE.
508 */
509
510#ifndef ECB_H
511#define ECB_H
512
513#ifdef _WIN32
514 typedef signed char int8_t;
515 typedef unsigned char uint8_t;
516 typedef signed short int16_t;
517 typedef unsigned short uint16_t;
518 typedef signed int int32_t;
519 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 520 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 521 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 522 typedef unsigned long long uint64_t;
523 #else /* _MSC_VER || __BORLANDC__ */
524 typedef signed __int64 int64_t;
525 typedef unsigned __int64 uint64_t;
526 #endif
480#else 527#else
481# define expect(expr,value) (expr) 528 #include <inttypes.h>
482# define noinline
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484# define inline
485# endif 529#endif
530
531/* many compilers define _GNUC_ to some versions but then only implement
532 * what their idiot authors think are the "more important" extensions,
533 * causing enormous grief in return for some better fake benchmark numbers.
534 * or so.
535 * we try to detect these and simply assume they are not gcc - if they have
536 * an issue with that they should have done it right in the first place.
537 */
538#ifndef ECB_GCC_VERSION
539 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
540 #define ECB_GCC_VERSION(major,minor) 0
541 #else
542 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
486#endif 543 #endif
544#endif
487 545
546/*****************************************************************************/
547
548/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
549/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
550
551#if ECB_NO_THREADS
552# define ECB_NO_SMP 1
553#endif
554
555#if ECB_NO_THREADS || ECB_NO_SMP
556 #define ECB_MEMORY_FENCE do { } while (0)
557#endif
558
559#ifndef ECB_MEMORY_FENCE
560 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
561 #if __i386 || __i386__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
564 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
565 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
568 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
569 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
570 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
571 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
572 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
573 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
574 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
575 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
576 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
577 #elif __sparc || __sparc__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
579 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
580 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
581 #elif defined __s390__ || defined __s390x__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
583 #elif defined __mips__
584 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
585 #elif defined __alpha__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
587 #endif
588 #endif
589#endif
590
591#ifndef ECB_MEMORY_FENCE
592 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
593 #define ECB_MEMORY_FENCE __sync_synchronize ()
594 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
595 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
596 #elif _MSC_VER >= 1400 /* VC++ 2005 */
597 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
598 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
599 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
600 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
601 #elif defined _WIN32
602 #include <WinNT.h>
603 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
604 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
605 #include <mbarrier.h>
606 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
607 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
608 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
609 #elif __xlC__
610 #define ECB_MEMORY_FENCE __sync ()
611 #endif
612#endif
613
614#ifndef ECB_MEMORY_FENCE
615 #if !ECB_AVOID_PTHREADS
616 /*
617 * if you get undefined symbol references to pthread_mutex_lock,
618 * or failure to find pthread.h, then you should implement
619 * the ECB_MEMORY_FENCE operations for your cpu/compiler
620 * OR provide pthread.h and link against the posix thread library
621 * of your system.
622 */
623 #include <pthread.h>
624 #define ECB_NEEDS_PTHREADS 1
625 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
626
627 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
628 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
629 #endif
630#endif
631
632#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
634#endif
635
636#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
637 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
638#endif
639
640/*****************************************************************************/
641
642#define ECB_C99 (__STDC_VERSION__ >= 199901L)
643
644#if __cplusplus
645 #define ecb_inline static inline
646#elif ECB_GCC_VERSION(2,5)
647 #define ecb_inline static __inline__
648#elif ECB_C99
649 #define ecb_inline static inline
650#else
651 #define ecb_inline static
652#endif
653
654#if ECB_GCC_VERSION(3,3)
655 #define ecb_restrict __restrict__
656#elif ECB_C99
657 #define ecb_restrict restrict
658#else
659 #define ecb_restrict
660#endif
661
662typedef int ecb_bool;
663
664#define ECB_CONCAT_(a, b) a ## b
665#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
666#define ECB_STRINGIFY_(a) # a
667#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
668
669#define ecb_function_ ecb_inline
670
671#if ECB_GCC_VERSION(3,1)
672 #define ecb_attribute(attrlist) __attribute__(attrlist)
673 #define ecb_is_constant(expr) __builtin_constant_p (expr)
674 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
675 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
676#else
677 #define ecb_attribute(attrlist)
678 #define ecb_is_constant(expr) 0
679 #define ecb_expect(expr,value) (expr)
680 #define ecb_prefetch(addr,rw,locality)
681#endif
682
683/* no emulation for ecb_decltype */
684#if ECB_GCC_VERSION(4,5)
685 #define ecb_decltype(x) __decltype(x)
686#elif ECB_GCC_VERSION(3,0)
687 #define ecb_decltype(x) __typeof(x)
688#endif
689
690#define ecb_noinline ecb_attribute ((__noinline__))
691#define ecb_noreturn ecb_attribute ((__noreturn__))
692#define ecb_unused ecb_attribute ((__unused__))
693#define ecb_const ecb_attribute ((__const__))
694#define ecb_pure ecb_attribute ((__pure__))
695
696#if ECB_GCC_VERSION(4,3)
697 #define ecb_artificial ecb_attribute ((__artificial__))
698 #define ecb_hot ecb_attribute ((__hot__))
699 #define ecb_cold ecb_attribute ((__cold__))
700#else
701 #define ecb_artificial
702 #define ecb_hot
703 #define ecb_cold
704#endif
705
706/* put around conditional expressions if you are very sure that the */
707/* expression is mostly true or mostly false. note that these return */
708/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 709#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 710#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
711/* for compatibility to the rest of the world */
712#define ecb_likely(expr) ecb_expect_true (expr)
713#define ecb_unlikely(expr) ecb_expect_false (expr)
714
715/* count trailing zero bits and count # of one bits */
716#if ECB_GCC_VERSION(3,4)
717 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
718 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
719 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
720 #define ecb_ctz32(x) __builtin_ctz (x)
721 #define ecb_ctz64(x) __builtin_ctzll (x)
722 #define ecb_popcount32(x) __builtin_popcount (x)
723 /* no popcountll */
724#else
725 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_ctz32 (uint32_t x)
728 {
729 int r = 0;
730
731 x &= ~x + 1; /* this isolates the lowest bit */
732
733#if ECB_branchless_on_i386
734 r += !!(x & 0xaaaaaaaa) << 0;
735 r += !!(x & 0xcccccccc) << 1;
736 r += !!(x & 0xf0f0f0f0) << 2;
737 r += !!(x & 0xff00ff00) << 3;
738 r += !!(x & 0xffff0000) << 4;
739#else
740 if (x & 0xaaaaaaaa) r += 1;
741 if (x & 0xcccccccc) r += 2;
742 if (x & 0xf0f0f0f0) r += 4;
743 if (x & 0xff00ff00) r += 8;
744 if (x & 0xffff0000) r += 16;
745#endif
746
747 return r;
748 }
749
750 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
751 ecb_function_ int
752 ecb_ctz64 (uint64_t x)
753 {
754 int shift = x & 0xffffffffU ? 0 : 32;
755 return ecb_ctz32 (x >> shift) + shift;
756 }
757
758 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
759 ecb_function_ int
760 ecb_popcount32 (uint32_t x)
761 {
762 x -= (x >> 1) & 0x55555555;
763 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
764 x = ((x >> 4) + x) & 0x0f0f0f0f;
765 x *= 0x01010101;
766
767 return x >> 24;
768 }
769
770 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
771 ecb_function_ int ecb_ld32 (uint32_t x)
772 {
773 int r = 0;
774
775 if (x >> 16) { x >>= 16; r += 16; }
776 if (x >> 8) { x >>= 8; r += 8; }
777 if (x >> 4) { x >>= 4; r += 4; }
778 if (x >> 2) { x >>= 2; r += 2; }
779 if (x >> 1) { r += 1; }
780
781 return r;
782 }
783
784 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
785 ecb_function_ int ecb_ld64 (uint64_t x)
786 {
787 int r = 0;
788
789 if (x >> 32) { x >>= 32; r += 32; }
790
791 return r + ecb_ld32 (x);
792 }
793#endif
794
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
796ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
797{
798 return ( (x * 0x0802U & 0x22110U)
799 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
800}
801
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
803ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
804{
805 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
806 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
807 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
808 x = ( x >> 8 ) | ( x << 8);
809
810 return x;
811}
812
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
814ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
815{
816 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
817 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
818 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
819 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
820 x = ( x >> 16 ) | ( x << 16);
821
822 return x;
823}
824
825/* popcount64 is only available on 64 bit cpus as gcc builtin */
826/* so for this version we are lazy */
827ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
828ecb_function_ int
829ecb_popcount64 (uint64_t x)
830{
831 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
832}
833
834ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
841ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
842
843ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
844ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
845ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
846ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
847ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
848ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
849ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
850ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
851
852#if ECB_GCC_VERSION(4,3)
853 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
854 #define ecb_bswap32(x) __builtin_bswap32 (x)
855 #define ecb_bswap64(x) __builtin_bswap64 (x)
856#else
857 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
858 ecb_function_ uint16_t
859 ecb_bswap16 (uint16_t x)
860 {
861 return ecb_rotl16 (x, 8);
862 }
863
864 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
865 ecb_function_ uint32_t
866 ecb_bswap32 (uint32_t x)
867 {
868 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
869 }
870
871 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
872 ecb_function_ uint64_t
873 ecb_bswap64 (uint64_t x)
874 {
875 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
876 }
877#endif
878
879#if ECB_GCC_VERSION(4,5)
880 #define ecb_unreachable() __builtin_unreachable ()
881#else
882 /* this seems to work fine, but gcc always emits a warning for it :/ */
883 ecb_inline void ecb_unreachable (void) ecb_noreturn;
884 ecb_inline void ecb_unreachable (void) { }
885#endif
886
887/* try to tell the compiler that some condition is definitely true */
888#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
889
890ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
891ecb_inline unsigned char
892ecb_byteorder_helper (void)
893{
894 const uint32_t u = 0x11223344;
895 return *(unsigned char *)&u;
896}
897
898ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
899ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
900ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
901ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
902
903#if ECB_GCC_VERSION(3,0) || ECB_C99
904 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
905#else
906 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
907#endif
908
909#if __cplusplus
910 template<typename T>
911 static inline T ecb_div_rd (T val, T div)
912 {
913 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
914 }
915 template<typename T>
916 static inline T ecb_div_ru (T val, T div)
917 {
918 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
919 }
920#else
921 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
922 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
923#endif
924
925#if ecb_cplusplus_does_not_suck
926 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
927 template<typename T, int N>
928 static inline int ecb_array_length (const T (&arr)[N])
929 {
930 return N;
931 }
932#else
933 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
934#endif
935
936#endif
937
938/* ECB.H END */
939
940#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
941/* if your architecture doesn't need memory fences, e.g. because it is
942 * single-cpu/core, or if you use libev in a project that doesn't use libev
943 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
944 * libev, in which cases the memory fences become nops.
945 * alternatively, you can remove this #error and link against libpthread,
946 * which will then provide the memory fences.
947 */
948# error "memory fences not defined for your architecture, please report"
949#endif
950
951#ifndef ECB_MEMORY_FENCE
952# define ECB_MEMORY_FENCE do { } while (0)
953# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
954# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
955#endif
956
957#define expect_false(cond) ecb_expect_false (cond)
958#define expect_true(cond) ecb_expect_true (cond)
959#define noinline ecb_noinline
960
490#define inline_size static inline 961#define inline_size ecb_inline
491 962
492#if EV_FEATURE_CODE 963#if EV_FEATURE_CODE
493# define inline_speed static inline 964# define inline_speed ecb_inline
494#else 965#else
495# define inline_speed static noinline 966# define inline_speed static noinline
496#endif 967#endif
497 968
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 969#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1008# include "ev_win32.c"
538#endif 1009#endif
539 1010
540/*****************************************************************************/ 1011/*****************************************************************************/
541 1012
1013/* define a suitable floor function (only used by periodics atm) */
1014
1015#if EV_USE_FLOOR
1016# include <math.h>
1017# define ev_floor(v) floor (v)
1018#else
1019
1020#include <float.h>
1021
1022/* a floor() replacement function, should be independent of ev_tstamp type */
1023static ev_tstamp noinline
1024ev_floor (ev_tstamp v)
1025{
1026 /* the choice of shift factor is not terribly important */
1027#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1028 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1029#else
1030 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1031#endif
1032
1033 /* argument too large for an unsigned long? */
1034 if (expect_false (v >= shift))
1035 {
1036 ev_tstamp f;
1037
1038 if (v == v - 1.)
1039 return v; /* very large number */
1040
1041 f = shift * ev_floor (v * (1. / shift));
1042 return f + ev_floor (v - f);
1043 }
1044
1045 /* special treatment for negative args? */
1046 if (expect_false (v < 0.))
1047 {
1048 ev_tstamp f = -ev_floor (-v);
1049
1050 return f - (f == v ? 0 : 1);
1051 }
1052
1053 /* fits into an unsigned long */
1054 return (unsigned long)v;
1055}
1056
1057#endif
1058
1059/*****************************************************************************/
1060
1061#ifdef __linux
1062# include <sys/utsname.h>
1063#endif
1064
1065static unsigned int noinline ecb_cold
1066ev_linux_version (void)
1067{
1068#ifdef __linux
1069 unsigned int v = 0;
1070 struct utsname buf;
1071 int i;
1072 char *p = buf.release;
1073
1074 if (uname (&buf))
1075 return 0;
1076
1077 for (i = 3+1; --i; )
1078 {
1079 unsigned int c = 0;
1080
1081 for (;;)
1082 {
1083 if (*p >= '0' && *p <= '9')
1084 c = c * 10 + *p++ - '0';
1085 else
1086 {
1087 p += *p == '.';
1088 break;
1089 }
1090 }
1091
1092 v = (v << 8) | c;
1093 }
1094
1095 return v;
1096#else
1097 return 0;
1098#endif
1099}
1100
1101/*****************************************************************************/
1102
542#if EV_AVOID_STDIO 1103#if EV_AVOID_STDIO
543static void noinline 1104static void noinline ecb_cold
544ev_printerr (const char *msg) 1105ev_printerr (const char *msg)
545{ 1106{
546 write (STDERR_FILENO, msg, strlen (msg)); 1107 write (STDERR_FILENO, msg, strlen (msg));
547} 1108}
548#endif 1109#endif
549 1110
550static void (*syserr_cb)(const char *msg); 1111static void (*syserr_cb)(const char *msg) EV_THROW;
551 1112
552void 1113void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1114ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
554{ 1115{
555 syserr_cb = cb; 1116 syserr_cb = cb;
556} 1117}
557 1118
558static void noinline 1119static void noinline ecb_cold
559ev_syserr (const char *msg) 1120ev_syserr (const char *msg)
560{ 1121{
561 if (!msg) 1122 if (!msg)
562 msg = "(libev) system error"; 1123 msg = "(libev) system error";
563 1124
564 if (syserr_cb) 1125 if (syserr_cb)
565 syserr_cb (msg); 1126 syserr_cb (msg);
566 else 1127 else
567 { 1128 {
568#if EV_AVOID_STDIO 1129#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1130 ev_printerr (msg);
572 ev_printerr (": "); 1131 ev_printerr (": ");
573 ev_printerr (err); 1132 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1133 ev_printerr ("\n");
575#else 1134#else
576 perror (msg); 1135 perror (msg);
577#endif 1136#endif
578 abort (); 1137 abort ();
… …
596 free (ptr); 1155 free (ptr);
597 return 0; 1156 return 0;
598#endif 1157#endif
599} 1158}
600 1159
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1160static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1161
603void 1162void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1163ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
605{ 1164{
606 alloc = cb; 1165 alloc = cb;
607} 1166}
608 1167
609inline_speed void * 1168inline_speed void *
… …
612 ptr = alloc (ptr, size); 1171 ptr = alloc (ptr, size);
613 1172
614 if (!ptr && size) 1173 if (!ptr && size)
615 { 1174 {
616#if EV_AVOID_STDIO 1175#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1176 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1177#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1178 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1179#endif
621 abort (); 1180 abort ();
622 } 1181 }
623 1182
624 return ptr; 1183 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1200 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1201 unsigned char unused;
643#if EV_USE_EPOLL 1202#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1203 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1204#endif
646#if EV_SELECT_IS_WINSOCKET 1205#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1206 SOCKET handle;
1207#endif
1208#if EV_USE_IOCP
1209 OVERLAPPED or, ow;
648#endif 1210#endif
649} ANFD; 1211} ANFD;
650 1212
651/* stores the pending event set for a given watcher */ 1213/* stores the pending event set for a given watcher */
652typedef struct 1214typedef struct
… …
694 #undef VAR 1256 #undef VAR
695 }; 1257 };
696 #include "ev_wrap.h" 1258 #include "ev_wrap.h"
697 1259
698 static struct ev_loop default_loop_struct; 1260 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1261 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1262
701#else 1263#else
702 1264
703 ev_tstamp ev_rt_now; 1265 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1266 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1267 #include "ev_vars.h"
706 #undef VAR 1268 #undef VAR
707 1269
708 static int ev_default_loop_ptr; 1270 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1279# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1280# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1281# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1282#endif
721 1283
722#define EVUNLOOP_RECURSE 0x80 1284#define EVBREAK_RECURSE 0x80
723 1285
724/*****************************************************************************/ 1286/*****************************************************************************/
725 1287
726#ifndef EV_HAVE_EV_TIME 1288#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1289ev_tstamp
728ev_time (void) 1290ev_time (void) EV_THROW
729{ 1291{
730#if EV_USE_REALTIME 1292#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1293 if (expect_true (have_realtime))
732 { 1294 {
733 struct timespec ts; 1295 struct timespec ts;
… …
757 return ev_time (); 1319 return ev_time ();
758} 1320}
759 1321
760#if EV_MULTIPLICITY 1322#if EV_MULTIPLICITY
761ev_tstamp 1323ev_tstamp
762ev_now (EV_P) 1324ev_now (EV_P) EV_THROW
763{ 1325{
764 return ev_rt_now; 1326 return ev_rt_now;
765} 1327}
766#endif 1328#endif
767 1329
768void 1330void
769ev_sleep (ev_tstamp delay) 1331ev_sleep (ev_tstamp delay) EV_THROW
770{ 1332{
771 if (delay > 0.) 1333 if (delay > 0.)
772 { 1334 {
773#if EV_USE_NANOSLEEP 1335#if EV_USE_NANOSLEEP
774 struct timespec ts; 1336 struct timespec ts;
775 1337
776 EV_TS_SET (ts, delay); 1338 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1339 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1340#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1341 Sleep ((unsigned long)(delay * 1e3));
780#else 1342#else
781 struct timeval tv; 1343 struct timeval tv;
782 1344
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1345 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 1346 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 1347 /* by older ones */
786 EV_TS_SET (tv, delay); 1348 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 1349 select (0, 0, 0, 0, &tv);
788#endif 1350#endif
789 } 1351 }
790} 1352}
791 1353
… …
802 1364
803 do 1365 do
804 ncur <<= 1; 1366 ncur <<= 1;
805 while (cnt > ncur); 1367 while (cnt > ncur);
806 1368
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1369 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1370 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1371 {
810 ncur *= elem; 1372 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1373 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1374 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1376 }
815 1377
816 return ncur; 1378 return ncur;
817} 1379}
818 1380
819static noinline void * 1381static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1382array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1383{
822 *cur = array_nextsize (elem, *cur, cnt); 1384 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1385 return ev_realloc (base, elem * *cur);
824} 1386}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1389 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1390
829#define array_needsize(type,base,cur,cnt,init) \ 1391#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1392 if (expect_false ((cnt) > (cur))) \
831 { \ 1393 { \
832 int ocur_ = (cur); \ 1394 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1395 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1396 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1397 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1398 }
837 1399
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1417pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1418{
857} 1419}
858 1420
859void noinline 1421void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1422ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1423{
862 W w_ = (W)w; 1424 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1425 int pri = ABSPRI (w_);
864 1426
865 if (expect_false (w_->pending)) 1427 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1431 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1432 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1433 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1434 pendings [pri][w_->pending - 1].events = revents;
873 } 1435 }
1436
1437 pendingpri = NUMPRI - 1;
874} 1438}
875 1439
876inline_speed void 1440inline_speed void
877feed_reverse (EV_P_ W w) 1441feed_reverse (EV_P_ W w)
878{ 1442{
… …
924 if (expect_true (!anfd->reify)) 1488 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
926} 1490}
927 1491
928void 1492void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1493ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1494{
931 if (fd >= 0 && fd < anfdmax) 1495 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1496 fd_event_nocheck (EV_A_ fd, revents);
933} 1497}
934 1498
… …
937inline_size void 1501inline_size void
938fd_reify (EV_P) 1502fd_reify (EV_P)
939{ 1503{
940 int i; 1504 int i;
941 1505
1506#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1507 for (i = 0; i < fdchangecnt; ++i)
1508 {
1509 int fd = fdchanges [i];
1510 ANFD *anfd = anfds + fd;
1511
1512 if (anfd->reify & EV__IOFDSET && anfd->head)
1513 {
1514 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1515
1516 if (handle != anfd->handle)
1517 {
1518 unsigned long arg;
1519
1520 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1521
1522 /* handle changed, but fd didn't - we need to do it in two steps */
1523 backend_modify (EV_A_ fd, anfd->events, 0);
1524 anfd->events = 0;
1525 anfd->handle = handle;
1526 }
1527 }
1528 }
1529#endif
1530
942 for (i = 0; i < fdchangecnt; ++i) 1531 for (i = 0; i < fdchangecnt; ++i)
943 { 1532 {
944 int fd = fdchanges [i]; 1533 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1534 ANFD *anfd = anfds + fd;
946 ev_io *w; 1535 ev_io *w;
947 1536
948 unsigned char events = 0; 1537 unsigned char o_events = anfd->events;
1538 unsigned char o_reify = anfd->reify;
949 1539
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1540 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1541
953#if EV_SELECT_IS_WINSOCKET 1542 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1543 {
956 unsigned long arg; 1544 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1547 anfd->events |= (unsigned char)w->events;
1548
1549 if (o_events != anfd->events)
1550 o_reify = EV__IOFDSET; /* actually |= */
959 } 1551 }
960#endif
961 1552
962 { 1553 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1554 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1555 }
973 1556
974 fdchangecnt = 0; 1557 fdchangecnt = 0;
975} 1558}
976 1559
… …
988 fdchanges [fdchangecnt - 1] = fd; 1571 fdchanges [fdchangecnt - 1] = fd;
989 } 1572 }
990} 1573}
991 1574
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1575/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1576inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1577fd_kill (EV_P_ int fd)
995{ 1578{
996 ev_io *w; 1579 ev_io *w;
997 1580
998 while ((w = (ev_io *)anfds [fd].head)) 1581 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1584 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1585 }
1003} 1586}
1004 1587
1005/* check whether the given fd is actually valid, for error recovery */ 1588/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1589inline_size int ecb_cold
1007fd_valid (int fd) 1590fd_valid (int fd)
1008{ 1591{
1009#ifdef _WIN32 1592#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1593 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1594#else
1012 return fcntl (fd, F_GETFD) != -1; 1595 return fcntl (fd, F_GETFD) != -1;
1013#endif 1596#endif
1014} 1597}
1015 1598
1016/* called on EBADF to verify fds */ 1599/* called on EBADF to verify fds */
1017static void noinline 1600static void noinline ecb_cold
1018fd_ebadf (EV_P) 1601fd_ebadf (EV_P)
1019{ 1602{
1020 int fd; 1603 int fd;
1021 1604
1022 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1607 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1608 fd_kill (EV_A_ fd);
1026} 1609}
1027 1610
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1611/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1612static void noinline ecb_cold
1030fd_enomem (EV_P) 1613fd_enomem (EV_P)
1031{ 1614{
1032 int fd; 1615 int fd;
1033 1616
1034 for (fd = anfdmax; fd--; ) 1617 for (fd = anfdmax; fd--; )
… …
1229 1812
1230/*****************************************************************************/ 1813/*****************************************************************************/
1231 1814
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 1816
1234static void noinline 1817static void noinline ecb_cold
1235evpipe_init (EV_P) 1818evpipe_init (EV_P)
1236{ 1819{
1237 if (!ev_is_active (&pipe_w)) 1820 if (!ev_is_active (&pipe_w))
1238 { 1821 {
1239# if EV_USE_EVENTFD 1822# if EV_USE_EVENTFD
… …
1261 ev_io_start (EV_A_ &pipe_w); 1844 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */ 1845 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 } 1846 }
1264} 1847}
1265 1848
1266inline_size void 1849inline_speed void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1850evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{ 1851{
1269 if (!*flag) 1852 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1853
1854 if (expect_true (*flag))
1855 return;
1856
1857 *flag = 1;
1858
1859 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1860
1861 pipe_write_skipped = 1;
1862
1863 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1864
1865 if (pipe_write_wanted)
1270 { 1866 {
1867 int old_errno;
1868
1869 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1870
1271 int old_errno = errno; /* save errno because write might clobber it */ 1871 old_errno = errno; /* save errno because write will clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275 1872
1276#if EV_USE_EVENTFD 1873#if EV_USE_EVENTFD
1277 if (evfd >= 0) 1874 if (evfd >= 0)
1278 { 1875 {
1279 uint64_t counter = 1; 1876 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t)); 1877 write (evfd, &counter, sizeof (uint64_t));
1281 } 1878 }
1282 else 1879 else
1283#endif 1880#endif
1284 /* win32 people keep sending patches that change this write() to send() */ 1881 {
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1882#ifdef _WIN32
1286 /* so when you think this write should be a send instead, please find out */ 1883 WSABUF buf;
1287 /* where your send() is from - it's definitely not the microsoft send, and */ 1884 DWORD sent;
1288 /* tell me. thank you. */ 1885 buf.buf = &buf;
1886 buf.len = 1;
1887 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1888#else
1289 write (evpipe [1], &dummy, 1); 1889 write (evpipe [1], &(evpipe [1]), 1);
1890#endif
1891 }
1290 1892
1291 errno = old_errno; 1893 errno = old_errno;
1292 } 1894 }
1293} 1895}
1294 1896
… …
1297static void 1899static void
1298pipecb (EV_P_ ev_io *iow, int revents) 1900pipecb (EV_P_ ev_io *iow, int revents)
1299{ 1901{
1300 int i; 1902 int i;
1301 1903
1904 if (revents & EV_READ)
1905 {
1302#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1303 if (evfd >= 0) 1907 if (evfd >= 0)
1304 { 1908 {
1305 uint64_t counter; 1909 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 1910 read (evfd, &counter, sizeof (uint64_t));
1307 } 1911 }
1308 else 1912 else
1309#endif 1913#endif
1310 { 1914 {
1311 char dummy; 1915 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1916#ifdef _WIN32
1917 WSABUF buf;
1918 DWORD recvd;
1919 buf.buf = dummy;
1920 buf.len = sizeof (dummy);
1921 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1922#else
1313 read (evpipe [0], &dummy, 1); 1923 read (evpipe [0], &dummy, sizeof (dummy));
1924#endif
1925 }
1314 } 1926 }
1315 1927
1928 pipe_write_skipped = 0;
1929
1930 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1931
1932#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 1933 if (sig_pending)
1317 { 1934 {
1318 sig_pending = 0; 1935 sig_pending = 0;
1936
1937 ECB_MEMORY_FENCE_RELEASE;
1319 1938
1320 for (i = EV_NSIG - 1; i--; ) 1939 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 1940 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 1941 ev_feed_signal_event (EV_A_ i + 1);
1323 } 1942 }
1943#endif
1324 1944
1325#if EV_ASYNC_ENABLE 1945#if EV_ASYNC_ENABLE
1326 if (async_pending) 1946 if (async_pending)
1327 { 1947 {
1328 async_pending = 0; 1948 async_pending = 0;
1949
1950 ECB_MEMORY_FENCE_RELEASE;
1329 1951
1330 for (i = asynccnt; i--; ) 1952 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 1953 if (asyncs [i]->sent)
1332 { 1954 {
1333 asyncs [i]->sent = 0; 1955 asyncs [i]->sent = 0;
… …
1337#endif 1959#endif
1338} 1960}
1339 1961
1340/*****************************************************************************/ 1962/*****************************************************************************/
1341 1963
1964void
1965ev_feed_signal (int signum) EV_THROW
1966{
1967#if EV_MULTIPLICITY
1968 EV_P = signals [signum - 1].loop;
1969
1970 if (!EV_A)
1971 return;
1972#endif
1973
1974 if (!ev_active (&pipe_w))
1975 return;
1976
1977 signals [signum - 1].pending = 1;
1978 evpipe_write (EV_A_ &sig_pending);
1979}
1980
1342static void 1981static void
1343ev_sighandler (int signum) 1982ev_sighandler (int signum)
1344{ 1983{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 1984#ifdef _WIN32
1350 signal (signum, ev_sighandler); 1985 signal (signum, ev_sighandler);
1351#endif 1986#endif
1352 1987
1353 signals [signum - 1].pending = 1; 1988 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 1989}
1356 1990
1357void noinline 1991void noinline
1358ev_feed_signal_event (EV_P_ int signum) 1992ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 1993{
1360 WL w; 1994 WL w;
1361 1995
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1996 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return; 1997 return;
… …
1459 2093
1460#endif 2094#endif
1461 2095
1462/*****************************************************************************/ 2096/*****************************************************************************/
1463 2097
2098#if EV_USE_IOCP
2099# include "ev_iocp.c"
2100#endif
1464#if EV_USE_PORT 2101#if EV_USE_PORT
1465# include "ev_port.c" 2102# include "ev_port.c"
1466#endif 2103#endif
1467#if EV_USE_KQUEUE 2104#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2105# include "ev_kqueue.c"
… …
1475#endif 2112#endif
1476#if EV_USE_SELECT 2113#if EV_USE_SELECT
1477# include "ev_select.c" 2114# include "ev_select.c"
1478#endif 2115#endif
1479 2116
1480int 2117int ecb_cold
1481ev_version_major (void) 2118ev_version_major (void) EV_THROW
1482{ 2119{
1483 return EV_VERSION_MAJOR; 2120 return EV_VERSION_MAJOR;
1484} 2121}
1485 2122
1486int 2123int ecb_cold
1487ev_version_minor (void) 2124ev_version_minor (void) EV_THROW
1488{ 2125{
1489 return EV_VERSION_MINOR; 2126 return EV_VERSION_MINOR;
1490} 2127}
1491 2128
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2129/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2130int inline_size ecb_cold
1494enable_secure (void) 2131enable_secure (void)
1495{ 2132{
1496#ifdef _WIN32 2133#ifdef _WIN32
1497 return 0; 2134 return 0;
1498#else 2135#else
1499 return getuid () != geteuid () 2136 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2137 || getgid () != getegid ();
1501#endif 2138#endif
1502} 2139}
1503 2140
1504unsigned int 2141unsigned int ecb_cold
1505ev_supported_backends (void) 2142ev_supported_backends (void) EV_THROW
1506{ 2143{
1507 unsigned int flags = 0; 2144 unsigned int flags = 0;
1508 2145
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2146 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2147 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2150 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2151
1515 return flags; 2152 return flags;
1516} 2153}
1517 2154
1518unsigned int 2155unsigned int ecb_cold
1519ev_recommended_backends (void) 2156ev_recommended_backends (void) EV_THROW
1520{ 2157{
1521 unsigned int flags = ev_supported_backends (); 2158 unsigned int flags = ev_supported_backends ();
1522 2159
1523#ifndef __NetBSD__ 2160#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2161 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2172#endif
1536 2173
1537 return flags; 2174 return flags;
1538} 2175}
1539 2176
2177unsigned int ecb_cold
2178ev_embeddable_backends (void) EV_THROW
2179{
2180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2181
2182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2184 flags &= ~EVBACKEND_EPOLL;
2185
2186 return flags;
2187}
2188
1540unsigned int 2189unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2190ev_backend (EV_P) EV_THROW
1554{ 2191{
1555 return backend; 2192 return backend;
1556} 2193}
1557 2194
1558#if EV_FEATURE_API 2195#if EV_FEATURE_API
1559unsigned int 2196unsigned int
1560ev_iteration (EV_P) 2197ev_iteration (EV_P) EV_THROW
1561{ 2198{
1562 return loop_count; 2199 return loop_count;
1563} 2200}
1564 2201
1565unsigned int 2202unsigned int
1566ev_depth (EV_P) 2203ev_depth (EV_P) EV_THROW
1567{ 2204{
1568 return loop_depth; 2205 return loop_depth;
1569} 2206}
1570 2207
1571void 2208void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2209ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2210{
1574 io_blocktime = interval; 2211 io_blocktime = interval;
1575} 2212}
1576 2213
1577void 2214void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2215ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2216{
1580 timeout_blocktime = interval; 2217 timeout_blocktime = interval;
1581} 2218}
1582 2219
1583void 2220void
1584ev_set_userdata (EV_P_ void *data) 2221ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2222{
1586 userdata = data; 2223 userdata = data;
1587} 2224}
1588 2225
1589void * 2226void *
1590ev_userdata (EV_P) 2227ev_userdata (EV_P) EV_THROW
1591{ 2228{
1592 return userdata; 2229 return userdata;
1593} 2230}
1594 2231
2232void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2233ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2234{
1597 invoke_cb = invoke_pending_cb; 2235 invoke_cb = invoke_pending_cb;
1598} 2236}
1599 2237
2238void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2239ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2240{
1602 release_cb = release; 2241 release_cb = release;
1603 acquire_cb = acquire; 2242 acquire_cb = acquire;
1604} 2243}
1605#endif 2244#endif
1606 2245
1607/* initialise a loop structure, must be zero-initialised */ 2246/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2247static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2248loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2249{
1611 if (!backend) 2250 if (!backend)
1612 { 2251 {
2252 origflags = flags;
2253
1613#if EV_USE_REALTIME 2254#if EV_USE_REALTIME
1614 if (!have_realtime) 2255 if (!have_realtime)
1615 { 2256 {
1616 struct timespec ts; 2257 struct timespec ts;
1617 2258
… …
1639 if (!(flags & EVFLAG_NOENV) 2280 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2281 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2282 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2283 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2284
1644 ev_rt_now = ev_time (); 2285 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2286 mn_now = get_clock ();
1646 now_floor = mn_now; 2287 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2288 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2289#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2290 invoke_cb = ev_invoke_pending;
1650#endif 2291#endif
1651 2292
1652 io_blocktime = 0.; 2293 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2294 timeout_blocktime = 0.;
1654 backend = 0; 2295 backend = 0;
1655 backend_fd = -1; 2296 backend_fd = -1;
1656 sig_pending = 0; 2297 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2298#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2299 async_pending = 0;
1659#endif 2300#endif
2301 pipe_write_skipped = 0;
2302 pipe_write_wanted = 0;
1660#if EV_USE_INOTIFY 2303#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2304 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2305#endif
1663#if EV_USE_SIGNALFD 2306#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2307 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2308#endif
1666 2309
1667 if (!(flags & 0x0000ffffU)) 2310 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2311 flags |= ev_recommended_backends ();
1669 2312
2313#if EV_USE_IOCP
2314 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2315#endif
1670#if EV_USE_PORT 2316#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2318#endif
1673#if EV_USE_KQUEUE 2319#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2337#endif
1692 } 2338 }
1693} 2339}
1694 2340
1695/* free up a loop structure */ 2341/* free up a loop structure */
1696static void noinline 2342void ecb_cold
1697loop_destroy (EV_P) 2343ev_loop_destroy (EV_P)
1698{ 2344{
1699 int i; 2345 int i;
2346
2347#if EV_MULTIPLICITY
2348 /* mimic free (0) */
2349 if (!EV_A)
2350 return;
2351#endif
2352
2353#if EV_CLEANUP_ENABLE
2354 /* queue cleanup watchers (and execute them) */
2355 if (expect_false (cleanupcnt))
2356 {
2357 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2358 EV_INVOKE_PENDING;
2359 }
2360#endif
2361
2362#if EV_CHILD_ENABLE
2363 if (ev_is_active (&childev))
2364 {
2365 ev_ref (EV_A); /* child watcher */
2366 ev_signal_stop (EV_A_ &childev);
2367 }
2368#endif
1700 2369
1701 if (ev_is_active (&pipe_w)) 2370 if (ev_is_active (&pipe_w))
1702 { 2371 {
1703 /*ev_ref (EV_A);*/ 2372 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2373 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1726#endif 2395#endif
1727 2396
1728 if (backend_fd >= 0) 2397 if (backend_fd >= 0)
1729 close (backend_fd); 2398 close (backend_fd);
1730 2399
2400#if EV_USE_IOCP
2401 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2402#endif
1731#if EV_USE_PORT 2403#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2404 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2405#endif
1734#if EV_USE_KQUEUE 2406#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2407 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2434 array_free (periodic, EMPTY);
1763#endif 2435#endif
1764#if EV_FORK_ENABLE 2436#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2437 array_free (fork, EMPTY);
1766#endif 2438#endif
2439#if EV_CLEANUP_ENABLE
2440 array_free (cleanup, EMPTY);
2441#endif
1767 array_free (prepare, EMPTY); 2442 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2443 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2444#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2445 array_free (async, EMPTY);
1771#endif 2446#endif
1772 2447
1773 backend = 0; 2448 backend = 0;
2449
2450#if EV_MULTIPLICITY
2451 if (ev_is_default_loop (EV_A))
2452#endif
2453 ev_default_loop_ptr = 0;
2454#if EV_MULTIPLICITY
2455 else
2456 ev_free (EV_A);
2457#endif
1774} 2458}
1775 2459
1776#if EV_USE_INOTIFY 2460#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2461inline_size void infy_fork (EV_P);
1778#endif 2462#endif
… …
1793 infy_fork (EV_A); 2477 infy_fork (EV_A);
1794#endif 2478#endif
1795 2479
1796 if (ev_is_active (&pipe_w)) 2480 if (ev_is_active (&pipe_w))
1797 { 2481 {
1798 /* this "locks" the handlers against writing to the pipe */ 2482 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2483
1805 ev_ref (EV_A); 2484 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2485 ev_io_stop (EV_A_ &pipe_w);
1807 2486
1808#if EV_USE_EVENTFD 2487#if EV_USE_EVENTFD
… …
1826 postfork = 0; 2505 postfork = 0;
1827} 2506}
1828 2507
1829#if EV_MULTIPLICITY 2508#if EV_MULTIPLICITY
1830 2509
1831struct ev_loop * 2510struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2511ev_loop_new (unsigned int flags) EV_THROW
1833{ 2512{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2513 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2514
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2515 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2516 loop_init (EV_A_ flags);
1838 2517
1839 if (ev_backend (EV_A)) 2518 if (ev_backend (EV_A))
1840 return EV_A; 2519 return EV_A;
1841 2520
2521 ev_free (EV_A);
1842 return 0; 2522 return 0;
1843} 2523}
1844 2524
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2525#endif /* multiplicity */
1858 2526
1859#if EV_VERIFY 2527#if EV_VERIFY
1860static void noinline 2528static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2529verify_watcher (EV_P_ W w)
1862{ 2530{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2531 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2532
1865 if (w->pending) 2533 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2534 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2535}
1868 2536
1869static void noinline 2537static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2538verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2539{
1872 int i; 2540 int i;
1873 2541
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2542 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2547
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2548 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2549 }
1882} 2550}
1883 2551
1884static void noinline 2552static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2553array_verify (EV_P_ W *ws, int cnt)
1886{ 2554{
1887 while (cnt--) 2555 while (cnt--)
1888 { 2556 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2557 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2559 }
1892} 2560}
1893#endif 2561#endif
1894 2562
1895#if EV_FEATURE_API 2563#if EV_FEATURE_API
1896void 2564void ecb_cold
1897ev_verify (EV_P) 2565ev_verify (EV_P) EV_THROW
1898{ 2566{
1899#if EV_VERIFY 2567#if EV_VERIFY
1900 int i; 2568 int i;
1901 WL w; 2569 WL w, w2;
1902 2570
1903 assert (activecnt >= -1); 2571 assert (activecnt >= -1);
1904 2572
1905 assert (fdchangemax >= fdchangecnt); 2573 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2574 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2575 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2576
1909 assert (anfdmax >= 0); 2577 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2578 for (i = 0; i < anfdmax; ++i)
2579 {
2580 int j = 0;
2581
1911 for (w = anfds [i].head; w; w = w->next) 2582 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2583 {
1913 verify_watcher (EV_A_ (W)w); 2584 verify_watcher (EV_A_ (W)w);
2585
2586 if (j++ & 1)
2587 {
2588 assert (("libev: io watcher list contains a loop", w != w2));
2589 w2 = w2->next;
2590 }
2591
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2592 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2593 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2594 }
2595 }
1917 2596
1918 assert (timermax >= timercnt); 2597 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2598 verify_heap (EV_A_ timers, timercnt);
1920 2599
1921#if EV_PERIODIC_ENABLE 2600#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2615#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2616 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2617 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2618#endif
1940 2619
2620#if EV_CLEANUP_ENABLE
2621 assert (cleanupmax >= cleanupcnt);
2622 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2623#endif
2624
1941#if EV_ASYNC_ENABLE 2625#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2626 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2627 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2628#endif
1945 2629
… …
1962#endif 2646#endif
1963} 2647}
1964#endif 2648#endif
1965 2649
1966#if EV_MULTIPLICITY 2650#if EV_MULTIPLICITY
1967struct ev_loop * 2651struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2652#else
1970int 2653int
2654#endif
1971ev_default_loop (unsigned int flags) 2655ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2656{
1974 if (!ev_default_loop_ptr) 2657 if (!ev_default_loop_ptr)
1975 { 2658 {
1976#if EV_MULTIPLICITY 2659#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2660 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2679
1997 return ev_default_loop_ptr; 2680 return ev_default_loop_ptr;
1998} 2681}
1999 2682
2000void 2683void
2001ev_default_destroy (void) 2684ev_loop_fork (EV_P) EV_THROW
2002{ 2685{
2003#if EV_MULTIPLICITY
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */ 2686 postfork = 1; /* must be in line with ev_default_fork */
2025} 2687}
2026 2688
2027/*****************************************************************************/ 2689/*****************************************************************************/
2028 2690
2029void 2691void
… …
2031{ 2693{
2032 EV_CB_INVOKE ((W)w, revents); 2694 EV_CB_INVOKE ((W)w, revents);
2033} 2695}
2034 2696
2035unsigned int 2697unsigned int
2036ev_pending_count (EV_P) 2698ev_pending_count (EV_P) EV_THROW
2037{ 2699{
2038 int pri; 2700 int pri;
2039 unsigned int count = 0; 2701 unsigned int count = 0;
2040 2702
2041 for (pri = NUMPRI; pri--; ) 2703 for (pri = NUMPRI; pri--; )
… …
2045} 2707}
2046 2708
2047void noinline 2709void noinline
2048ev_invoke_pending (EV_P) 2710ev_invoke_pending (EV_P)
2049{ 2711{
2050 int pri; 2712 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2051
2052 for (pri = NUMPRI; pri--; )
2053 while (pendingcnt [pri]) 2713 while (pendingcnt [pendingpri])
2054 { 2714 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2715 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059 2716
2060 p->w->pending = 0; 2717 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2718 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2063 } 2720 }
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 2782 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 2783 }
2127} 2784}
2128 2785
2129#if EV_PERIODIC_ENABLE 2786#if EV_PERIODIC_ENABLE
2787
2788static void noinline
2789periodic_recalc (EV_P_ ev_periodic *w)
2790{
2791 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2792 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2793
2794 /* the above almost always errs on the low side */
2795 while (at <= ev_rt_now)
2796 {
2797 ev_tstamp nat = at + w->interval;
2798
2799 /* when resolution fails us, we use ev_rt_now */
2800 if (expect_false (nat == at))
2801 {
2802 at = ev_rt_now;
2803 break;
2804 }
2805
2806 at = nat;
2807 }
2808
2809 ev_at (w) = at;
2810}
2811
2130/* make periodics pending */ 2812/* make periodics pending */
2131inline_size void 2813inline_size void
2132periodics_reify (EV_P) 2814periodics_reify (EV_P)
2133{ 2815{
2134 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
… …
2153 ANHE_at_cache (periodics [HEAP0]); 2835 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 2836 downheap (periodics, periodiccnt, HEAP0);
2155 } 2837 }
2156 else if (w->interval) 2838 else if (w->interval)
2157 { 2839 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2840 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 2841 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 2842 downheap (periodics, periodiccnt, HEAP0);
2174 } 2843 }
2175 else 2844 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2845 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 2853 }
2185} 2854}
2186 2855
2187/* simply recalculate all periodics */ 2856/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2857/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 2858static void noinline ecb_cold
2190periodics_reschedule (EV_P) 2859periodics_reschedule (EV_P)
2191{ 2860{
2192 int i; 2861 int i;
2193 2862
2194 /* adjust periodics after time jump */ 2863 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2866 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 2867
2199 if (w->reschedule_cb) 2868 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2869 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 2870 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2871 periodic_recalc (EV_A_ w);
2203 2872
2204 ANHE_at_cache (periodics [i]); 2873 ANHE_at_cache (periodics [i]);
2205 } 2874 }
2206 2875
2207 reheap (periodics, periodiccnt); 2876 reheap (periodics, periodiccnt);
2208} 2877}
2209#endif 2878#endif
2210 2879
2211/* adjust all timers by a given offset */ 2880/* adjust all timers by a given offset */
2212static void noinline 2881static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 2882timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 2883{
2215 int i; 2884 int i;
2216 2885
2217 for (i = 0; i < timercnt; ++i) 2886 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 2923 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 2924 * in the unlikely event of having been preempted here.
2256 */ 2925 */
2257 for (i = 4; --i; ) 2926 for (i = 4; --i; )
2258 { 2927 {
2928 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 2929 rtmn_diff = ev_rt_now - mn_now;
2260 2930
2931 diff = odiff - rtmn_diff;
2932
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2933 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 2934 return; /* all is well */
2263 2935
2264 ev_rt_now = ev_time (); 2936 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 2937 mn_now = get_clock ();
2266 now_floor = mn_now; 2938 now_floor = mn_now;
… …
2288 2960
2289 mn_now = ev_rt_now; 2961 mn_now = ev_rt_now;
2290 } 2962 }
2291} 2963}
2292 2964
2293void 2965int
2294ev_loop (EV_P_ int flags) 2966ev_run (EV_P_ int flags)
2295{ 2967{
2296#if EV_FEATURE_API 2968#if EV_FEATURE_API
2297 ++loop_depth; 2969 ++loop_depth;
2298#endif 2970#endif
2299 2971
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2972 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 2973
2302 loop_done = EVUNLOOP_CANCEL; 2974 loop_done = EVBREAK_CANCEL;
2303 2975
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2976 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 2977
2306 do 2978 do
2307 { 2979 {
… …
2350 /* calculate blocking time */ 3022 /* calculate blocking time */
2351 { 3023 {
2352 ev_tstamp waittime = 0.; 3024 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3025 ev_tstamp sleeptime = 0.;
2354 3026
3027 /* remember old timestamp for io_blocktime calculation */
3028 ev_tstamp prev_mn_now = mn_now;
3029
3030 /* update time to cancel out callback processing overhead */
3031 time_update (EV_A_ 1e100);
3032
3033 /* from now on, we want a pipe-wake-up */
3034 pipe_write_wanted = 1;
3035
3036 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3037
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3038 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3039 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3040 waittime = MAX_BLOCKTIME;
2364 3041
2365 if (timercnt) 3042 if (timercnt)
2366 { 3043 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
2369 } 3046 }
2370 3047
2371#if EV_PERIODIC_ENABLE 3048#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3049 if (periodiccnt)
2373 { 3050 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3051 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3052 if (waittime > to) waittime = to;
2376 } 3053 }
2377#endif 3054#endif
2378 3055
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3056 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3057 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3058 waittime = timeout_blocktime;
3059
3060 /* at this point, we NEED to wait, so we have to ensure */
3061 /* to pass a minimum nonzero value to the backend */
3062 if (expect_false (waittime < backend_mintime))
3063 waittime = backend_mintime;
2382 3064
2383 /* extra check because io_blocktime is commonly 0 */ 3065 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3066 if (expect_false (io_blocktime))
2385 { 3067 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3068 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3069
2388 if (sleeptime > waittime - backend_fudge) 3070 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3071 sleeptime = waittime - backend_mintime;
2390 3072
2391 if (expect_true (sleeptime > 0.)) 3073 if (expect_true (sleeptime > 0.))
2392 { 3074 {
2393 ev_sleep (sleeptime); 3075 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3076 waittime -= sleeptime;
… …
2397 } 3079 }
2398 3080
2399#if EV_FEATURE_API 3081#if EV_FEATURE_API
2400 ++loop_count; 3082 ++loop_count;
2401#endif 3083#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3084 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3085 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3086 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3087
3088 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3089
3090 if (pipe_write_skipped)
3091 {
3092 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3094 }
3095
2405 3096
2406 /* update ev_rt_now, do magic */ 3097 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3098 time_update (EV_A_ waittime + sleeptime);
2408 } 3099 }
2409 3100
… …
2427 EV_INVOKE_PENDING; 3118 EV_INVOKE_PENDING;
2428 } 3119 }
2429 while (expect_true ( 3120 while (expect_true (
2430 activecnt 3121 activecnt
2431 && !loop_done 3122 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3123 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3124 ));
2434 3125
2435 if (loop_done == EVUNLOOP_ONE) 3126 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3127 loop_done = EVBREAK_CANCEL;
2437 3128
2438#if EV_FEATURE_API 3129#if EV_FEATURE_API
2439 --loop_depth; 3130 --loop_depth;
2440#endif 3131#endif
3132
3133 return activecnt;
2441} 3134}
2442 3135
2443void 3136void
2444ev_unloop (EV_P_ int how) 3137ev_break (EV_P_ int how) EV_THROW
2445{ 3138{
2446 loop_done = how; 3139 loop_done = how;
2447} 3140}
2448 3141
2449void 3142void
2450ev_ref (EV_P) 3143ev_ref (EV_P) EV_THROW
2451{ 3144{
2452 ++activecnt; 3145 ++activecnt;
2453} 3146}
2454 3147
2455void 3148void
2456ev_unref (EV_P) 3149ev_unref (EV_P) EV_THROW
2457{ 3150{
2458 --activecnt; 3151 --activecnt;
2459} 3152}
2460 3153
2461void 3154void
2462ev_now_update (EV_P) 3155ev_now_update (EV_P) EV_THROW
2463{ 3156{
2464 time_update (EV_A_ 1e100); 3157 time_update (EV_A_ 1e100);
2465} 3158}
2466 3159
2467void 3160void
2468ev_suspend (EV_P) 3161ev_suspend (EV_P) EV_THROW
2469{ 3162{
2470 ev_now_update (EV_A); 3163 ev_now_update (EV_A);
2471} 3164}
2472 3165
2473void 3166void
2474ev_resume (EV_P) 3167ev_resume (EV_P) EV_THROW
2475{ 3168{
2476 ev_tstamp mn_prev = mn_now; 3169 ev_tstamp mn_prev = mn_now;
2477 3170
2478 ev_now_update (EV_A); 3171 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3172 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3211 w->pending = 0;
2519 } 3212 }
2520} 3213}
2521 3214
2522int 3215int
2523ev_clear_pending (EV_P_ void *w) 3216ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3217{
2525 W w_ = (W)w; 3218 W w_ = (W)w;
2526 int pending = w_->pending; 3219 int pending = w_->pending;
2527 3220
2528 if (expect_true (pending)) 3221 if (expect_true (pending))
… …
2561} 3254}
2562 3255
2563/*****************************************************************************/ 3256/*****************************************************************************/
2564 3257
2565void noinline 3258void noinline
2566ev_io_start (EV_P_ ev_io *w) 3259ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3260{
2568 int fd = w->fd; 3261 int fd = w->fd;
2569 3262
2570 if (expect_false (ev_is_active (w))) 3263 if (expect_false (ev_is_active (w)))
2571 return; 3264 return;
… …
2577 3270
2578 ev_start (EV_A_ (W)w, 1); 3271 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3272 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3273 wlist_add (&anfds[fd].head, (WL)w);
2581 3274
3275 /* common bug, apparently */
3276 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3277
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3279 w->events &= ~EV__IOFDSET;
2584 3280
2585 EV_FREQUENT_CHECK; 3281 EV_FREQUENT_CHECK;
2586} 3282}
2587 3283
2588void noinline 3284void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3285ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3286{
2591 clear_pending (EV_A_ (W)w); 3287 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3288 if (expect_false (!ev_is_active (w)))
2593 return; 3289 return;
2594 3290
… …
2597 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2598 3294
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3295 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
2601 3297
2602 fd_change (EV_A_ w->fd, 1); 3298 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3299
2604 EV_FREQUENT_CHECK; 3300 EV_FREQUENT_CHECK;
2605} 3301}
2606 3302
2607void noinline 3303void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3304ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3305{
2610 if (expect_false (ev_is_active (w))) 3306 if (expect_false (ev_is_active (w)))
2611 return; 3307 return;
2612 3308
2613 ev_at (w) += mn_now; 3309 ev_at (w) += mn_now;
… …
2627 3323
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3324 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3325}
2630 3326
2631void noinline 3327void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3328ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3329{
2634 clear_pending (EV_A_ (W)w); 3330 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3331 if (expect_false (!ev_is_active (w)))
2636 return; 3332 return;
2637 3333
… …
2657 3353
2658 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2659} 3355}
2660 3356
2661void noinline 3357void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3358ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3359{
2664 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
3361
3362 clear_pending (EV_A_ (W)w);
2665 3363
2666 if (ev_is_active (w)) 3364 if (ev_is_active (w))
2667 { 3365 {
2668 if (w->repeat) 3366 if (w->repeat)
2669 { 3367 {
… …
2682 3380
2683 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2684} 3382}
2685 3383
2686ev_tstamp 3384ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3385ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3386{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3387 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3388}
2691 3389
2692#if EV_PERIODIC_ENABLE 3390#if EV_PERIODIC_ENABLE
2693void noinline 3391void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3392ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3393{
2696 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2697 return; 3395 return;
2698 3396
2699 if (w->reschedule_cb) 3397 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3398 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3399 else if (w->interval)
2702 { 3400 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3401 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3402 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3403 }
2707 else 3404 else
2708 ev_at (w) = w->offset; 3405 ev_at (w) = w->offset;
2709 3406
2710 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
… …
2720 3417
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3419}
2723 3420
2724void noinline 3421void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3422ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3423{
2727 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2729 return; 3426 return;
2730 3427
… …
2748 3445
2749 EV_FREQUENT_CHECK; 3446 EV_FREQUENT_CHECK;
2750} 3447}
2751 3448
2752void noinline 3449void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3450ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3451{
2755 /* TODO: use adjustheap and recalculation */ 3452 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3453 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3454 ev_periodic_start (EV_A_ w);
2758} 3455}
… …
2763#endif 3460#endif
2764 3461
2765#if EV_SIGNAL_ENABLE 3462#if EV_SIGNAL_ENABLE
2766 3463
2767void noinline 3464void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3465ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3466{
2770 if (expect_false (ev_is_active (w))) 3467 if (expect_false (ev_is_active (w)))
2771 return; 3468 return;
2772 3469
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3470 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2831 sa.sa_handler = ev_sighandler; 3528 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3529 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3530 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3531 sigaction (w->signum, &sa, 0);
2835 3532
3533 if (origflags & EVFLAG_NOSIGMASK)
3534 {
2836 sigemptyset (&sa.sa_mask); 3535 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3536 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3537 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3538 }
2839#endif 3539#endif
2840 } 3540 }
2841 3541
2842 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2843} 3543}
2844 3544
2845void noinline 3545void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3546ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3547{
2848 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2850 return; 3550 return;
2851 3551
… …
2882#endif 3582#endif
2883 3583
2884#if EV_CHILD_ENABLE 3584#if EV_CHILD_ENABLE
2885 3585
2886void 3586void
2887ev_child_start (EV_P_ ev_child *w) 3587ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3588{
2889#if EV_MULTIPLICITY 3589#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3590 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3591#endif
2892 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
… …
2899 3599
2900 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2901} 3601}
2902 3602
2903void 3603void
2904ev_child_stop (EV_P_ ev_child *w) 3604ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3605{
2906 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2908 return; 3608 return;
2909 3609
… …
2984 if (!pend || pend == path) 3684 if (!pend || pend == path)
2985 break; 3685 break;
2986 3686
2987 *pend = 0; 3687 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3688 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3689 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3690 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3691 }
2992 } 3692 }
2993 3693
2994 if (w->wd >= 0) 3694 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3761 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 3762 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 3763 }
3064} 3764}
3065 3765
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 3766inline_size void ecb_cold
3099ev_check_2625 (EV_P) 3767ev_check_2625 (EV_P)
3100{ 3768{
3101 /* kernels < 2.6.25 are borked 3769 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3770 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 3771 */
… …
3108} 3776}
3109 3777
3110inline_size int 3778inline_size int
3111infy_newfd (void) 3779infy_newfd (void)
3112{ 3780{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3781#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3782 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 3783 if (fd >= 0)
3116 return fd; 3784 return fd;
3117#endif 3785#endif
3118 return inotify_init (); 3786 return inotify_init ();
… …
3193#else 3861#else
3194# define EV_LSTAT(p,b) lstat (p, b) 3862# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 3863#endif
3196 3864
3197void 3865void
3198ev_stat_stat (EV_P_ ev_stat *w) 3866ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 3867{
3200 if (lstat (w->path, &w->attr) < 0) 3868 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 3869 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 3870 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 3871 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 3910 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 3911 }
3244} 3912}
3245 3913
3246void 3914void
3247ev_stat_start (EV_P_ ev_stat *w) 3915ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 3916{
3249 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3250 return; 3918 return;
3251 3919
3252 ev_stat_stat (EV_A_ w); 3920 ev_stat_stat (EV_A_ w);
… …
3273 3941
3274 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
3275} 3943}
3276 3944
3277void 3945void
3278ev_stat_stop (EV_P_ ev_stat *w) 3946ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 3947{
3280 clear_pending (EV_A_ (W)w); 3948 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 3949 if (expect_false (!ev_is_active (w)))
3282 return; 3950 return;
3283 3951
… …
3299} 3967}
3300#endif 3968#endif
3301 3969
3302#if EV_IDLE_ENABLE 3970#if EV_IDLE_ENABLE
3303void 3971void
3304ev_idle_start (EV_P_ ev_idle *w) 3972ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 3973{
3306 if (expect_false (ev_is_active (w))) 3974 if (expect_false (ev_is_active (w)))
3307 return; 3975 return;
3308 3976
3309 pri_adjust (EV_A_ (W)w); 3977 pri_adjust (EV_A_ (W)w);
… …
3322 3990
3323 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3324} 3992}
3325 3993
3326void 3994void
3327ev_idle_stop (EV_P_ ev_idle *w) 3995ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 3996{
3329 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
3331 return; 3999 return;
3332 4000
… …
3346} 4014}
3347#endif 4015#endif
3348 4016
3349#if EV_PREPARE_ENABLE 4017#if EV_PREPARE_ENABLE
3350void 4018void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4019ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4020{
3353 if (expect_false (ev_is_active (w))) 4021 if (expect_false (ev_is_active (w)))
3354 return; 4022 return;
3355 4023
3356 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
… …
3361 4029
3362 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3363} 4031}
3364 4032
3365void 4033void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4034ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4035{
3368 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3370 return; 4038 return;
3371 4039
… …
3384} 4052}
3385#endif 4053#endif
3386 4054
3387#if EV_CHECK_ENABLE 4055#if EV_CHECK_ENABLE
3388void 4056void
3389ev_check_start (EV_P_ ev_check *w) 4057ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4058{
3391 if (expect_false (ev_is_active (w))) 4059 if (expect_false (ev_is_active (w)))
3392 return; 4060 return;
3393 4061
3394 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
… …
3399 4067
3400 EV_FREQUENT_CHECK; 4068 EV_FREQUENT_CHECK;
3401} 4069}
3402 4070
3403void 4071void
3404ev_check_stop (EV_P_ ev_check *w) 4072ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4073{
3406 clear_pending (EV_A_ (W)w); 4074 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4075 if (expect_false (!ev_is_active (w)))
3408 return; 4076 return;
3409 4077
… …
3422} 4090}
3423#endif 4091#endif
3424 4092
3425#if EV_EMBED_ENABLE 4093#if EV_EMBED_ENABLE
3426void noinline 4094void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4095ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4096{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4097 ev_run (w->other, EVRUN_NOWAIT);
3430} 4098}
3431 4099
3432static void 4100static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4101embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4102{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4103 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4104
3437 if (ev_cb (w)) 4105 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4106 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4107 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4108 ev_run (w->other, EVRUN_NOWAIT);
3441} 4109}
3442 4110
3443static void 4111static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4112embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4113{
… …
3449 EV_P = w->other; 4117 EV_P = w->other;
3450 4118
3451 while (fdchangecnt) 4119 while (fdchangecnt)
3452 { 4120 {
3453 fd_reify (EV_A); 4121 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4122 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4123 }
3456 } 4124 }
3457} 4125}
3458 4126
3459static void 4127static void
… …
3465 4133
3466 { 4134 {
3467 EV_P = w->other; 4135 EV_P = w->other;
3468 4136
3469 ev_loop_fork (EV_A); 4137 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4138 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4139 }
3472 4140
3473 ev_embed_start (EV_A_ w); 4141 ev_embed_start (EV_A_ w);
3474} 4142}
3475 4143
… …
3480 ev_idle_stop (EV_A_ idle); 4148 ev_idle_stop (EV_A_ idle);
3481} 4149}
3482#endif 4150#endif
3483 4151
3484void 4152void
3485ev_embed_start (EV_P_ ev_embed *w) 4153ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4154{
3487 if (expect_false (ev_is_active (w))) 4155 if (expect_false (ev_is_active (w)))
3488 return; 4156 return;
3489 4157
3490 { 4158 {
… …
3511 4179
3512 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
3513} 4181}
3514 4182
3515void 4183void
3516ev_embed_stop (EV_P_ ev_embed *w) 4184ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4185{
3518 clear_pending (EV_A_ (W)w); 4186 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4187 if (expect_false (!ev_is_active (w)))
3520 return; 4188 return;
3521 4189
… …
3531} 4199}
3532#endif 4200#endif
3533 4201
3534#if EV_FORK_ENABLE 4202#if EV_FORK_ENABLE
3535void 4203void
3536ev_fork_start (EV_P_ ev_fork *w) 4204ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4205{
3538 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
3539 return; 4207 return;
3540 4208
3541 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
… …
3546 4214
3547 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
3548} 4216}
3549 4217
3550void 4218void
3551ev_fork_stop (EV_P_ ev_fork *w) 4219ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4220{
3553 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4222 if (expect_false (!ev_is_active (w)))
3555 return; 4223 return;
3556 4224
… …
3567 4235
3568 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3569} 4237}
3570#endif 4238#endif
3571 4239
4240#if EV_CLEANUP_ENABLE
4241void
4242ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4243{
4244 if (expect_false (ev_is_active (w)))
4245 return;
4246
4247 EV_FREQUENT_CHECK;
4248
4249 ev_start (EV_A_ (W)w, ++cleanupcnt);
4250 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4251 cleanups [cleanupcnt - 1] = w;
4252
4253 /* cleanup watchers should never keep a refcount on the loop */
4254 ev_unref (EV_A);
4255 EV_FREQUENT_CHECK;
4256}
4257
4258void
4259ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4260{
4261 clear_pending (EV_A_ (W)w);
4262 if (expect_false (!ev_is_active (w)))
4263 return;
4264
4265 EV_FREQUENT_CHECK;
4266 ev_ref (EV_A);
4267
4268 {
4269 int active = ev_active (w);
4270
4271 cleanups [active - 1] = cleanups [--cleanupcnt];
4272 ev_active (cleanups [active - 1]) = active;
4273 }
4274
4275 ev_stop (EV_A_ (W)w);
4276
4277 EV_FREQUENT_CHECK;
4278}
4279#endif
4280
3572#if EV_ASYNC_ENABLE 4281#if EV_ASYNC_ENABLE
3573void 4282void
3574ev_async_start (EV_P_ ev_async *w) 4283ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4284{
3576 if (expect_false (ev_is_active (w))) 4285 if (expect_false (ev_is_active (w)))
3577 return; 4286 return;
4287
4288 w->sent = 0;
3578 4289
3579 evpipe_init (EV_A); 4290 evpipe_init (EV_A);
3580 4291
3581 EV_FREQUENT_CHECK; 4292 EV_FREQUENT_CHECK;
3582 4293
… …
3586 4297
3587 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3588} 4299}
3589 4300
3590void 4301void
3591ev_async_stop (EV_P_ ev_async *w) 4302ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4303{
3593 clear_pending (EV_A_ (W)w); 4304 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4305 if (expect_false (!ev_is_active (w)))
3595 return; 4306 return;
3596 4307
… …
3607 4318
3608 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
3609} 4320}
3610 4321
3611void 4322void
3612ev_async_send (EV_P_ ev_async *w) 4323ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4324{
3614 w->sent = 1; 4325 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4326 evpipe_write (EV_A_ &async_pending);
3616} 4327}
3617#endif 4328#endif
… …
3654 4365
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4366 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4367}
3657 4368
3658void 4369void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4370ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4371{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4372 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4373
3663 if (expect_false (!once)) 4374 if (expect_false (!once))
3664 { 4375 {
… …
3685} 4396}
3686 4397
3687/*****************************************************************************/ 4398/*****************************************************************************/
3688 4399
3689#if EV_WALK_ENABLE 4400#if EV_WALK_ENABLE
3690void 4401void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4402ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4403{
3693 int i, j; 4404 int i, j;
3694 ev_watcher_list *wl, *wn; 4405 ev_watcher_list *wl, *wn;
3695 4406
3696 if (types & (EV_IO | EV_EMBED)) 4407 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4450 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4451#endif
3741 4452
3742#if EV_IDLE_ENABLE 4453#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4454 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4455 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4456 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4457 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4458#endif
3748 4459
3749#if EV_FORK_ENABLE 4460#if EV_FORK_ENABLE
… …
3802 4513
3803#if EV_MULTIPLICITY 4514#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4515 #include "ev_wrap.h"
3805#endif 4516#endif
3806 4517
3807#ifdef __cplusplus
3808}
3809#endif
3810

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