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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.434 by root, Fri May 18 00:04:52 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396# endif 413# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 414#endif
402 415
403#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 418# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
412# else 425# else
413# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
414# endif 427# endif
415# endif 428# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 430#endif
424 431
425#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 434# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
434# else 441# else
435# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
436# endif 443# endif
437# endif 444# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 446
443struct signalfd_siginfo 447struct signalfd_siginfo
444{ 448{
445 uint32_t ssi_signo; 449 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
447}; 451};
448# ifdef __cplusplus
449}
450# endif 452#endif
451#endif
452
453 453
454/**/ 454/**/
455 455
456#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 458#else
459# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
460#endif 460#endif
461 461
462/* 462/*
463 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 465 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 468
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 516 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
478#else 523#else
479# define expect(expr,value) (expr) 524 #include <inttypes.h>
480# define noinline
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
482# define inline
483# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 539 #endif
540#endif
485 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
488#define inline_size static inline 957#define inline_size ecb_inline
489 958
490#if EV_FEATURE_CODE 959#if EV_FEATURE_CODE
491# define inline_speed static inline 960# define inline_speed ecb_inline
492#else 961#else
493# define inline_speed static noinline 962# define inline_speed static noinline
494#endif 963#endif
495 964
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1004# include "ev_win32.c"
536#endif 1005#endif
537 1006
538/*****************************************************************************/ 1007/*****************************************************************************/
539 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
540#if EV_AVOID_STDIO 1099#if EV_AVOID_STDIO
541static void noinline 1100static void noinline ecb_cold
542ev_printerr (const char *msg) 1101ev_printerr (const char *msg)
543{ 1102{
544 write (STDERR_FILENO, msg, strlen (msg)); 1103 write (STDERR_FILENO, msg, strlen (msg));
545} 1104}
546#endif 1105#endif
547 1106
548static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
549 1108
550void 1109void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1111{
553 syserr_cb = cb; 1112 syserr_cb = cb;
554} 1113}
555 1114
556static void noinline 1115static void noinline ecb_cold
557ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
558{ 1117{
559 if (!msg) 1118 if (!msg)
560 msg = "(libev) system error"; 1119 msg = "(libev) system error";
561 1120
562 if (syserr_cb) 1121 if (syserr_cb)
563 syserr_cb (msg); 1122 syserr_cb (msg);
564 else 1123 else
565 { 1124 {
566#if EV_AVOID_STDIO 1125#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1126 ev_printerr (msg);
570 ev_printerr (": "); 1127 ev_printerr (": ");
571 ev_printerr (err); 1128 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1129 ev_printerr ("\n");
573#else 1130#else
574 perror (msg); 1131 perror (msg);
575#endif 1132#endif
576 abort (); 1133 abort ();
577 } 1134 }
578} 1135}
579 1136
580static void * 1137static void *
581ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1139{
583#if __GLIBC__ 1140#if __GLIBC__
584 return realloc (ptr, size); 1141 return realloc (ptr, size);
585#else 1142#else
586 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
… …
594 free (ptr); 1151 free (ptr);
595 return 0; 1152 return 0;
596#endif 1153#endif
597} 1154}
598 1155
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1157
601void 1158void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1160{
604 alloc = cb; 1161 alloc = cb;
605} 1162}
606 1163
607inline_speed void * 1164inline_speed void *
… …
610 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
611 1168
612 if (!ptr && size) 1169 if (!ptr && size)
613 { 1170 {
614#if EV_AVOID_STDIO 1171#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1173#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1175#endif
619 abort (); 1176 abort ();
620 } 1177 }
621 1178
622 return ptr; 1179 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1197 unsigned char unused;
641#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1200#endif
644#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
646#endif 1206#endif
647} ANFD; 1207} ANFD;
648 1208
649/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
650typedef struct 1210typedef struct
… …
692 #undef VAR 1252 #undef VAR
693 }; 1253 };
694 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
695 1255
696 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1258
699#else 1259#else
700 1260
701 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1263 #include "ev_vars.h"
704 #undef VAR 1264 #undef VAR
705 1265
706 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1278#endif
719 1279
720#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
721 1281
722/*****************************************************************************/ 1282/*****************************************************************************/
723 1283
724#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1285ev_tstamp
726ev_time (void) 1286ev_time (void) EV_THROW
727{ 1287{
728#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
730 { 1290 {
731 struct timespec ts; 1291 struct timespec ts;
… …
755 return ev_time (); 1315 return ev_time ();
756} 1316}
757 1317
758#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
759ev_tstamp 1319ev_tstamp
760ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
761{ 1321{
762 return ev_rt_now; 1322 return ev_rt_now;
763} 1323}
764#endif 1324#endif
765 1325
766void 1326void
767ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
768{ 1328{
769 if (delay > 0.) 1329 if (delay > 0.)
770 { 1330 {
771#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
772 struct timespec ts; 1332 struct timespec ts;
773 1333
774 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1336#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
780#else 1338#else
781 struct timeval tv; 1339 struct timeval tv;
782 1340
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
790#endif 1346#endif
791 } 1347 }
792} 1348}
793 1349
… …
804 1360
805 do 1361 do
806 ncur <<= 1; 1362 ncur <<= 1;
807 while (cnt > ncur); 1363 while (cnt > ncur);
808 1364
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1367 {
812 ncur *= elem; 1368 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1372 }
817 1373
818 return ncur; 1374 return ncur;
819} 1375}
820 1376
821static noinline void * 1377static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1379{
824 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
826} 1382}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1386
831#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
833 { \ 1389 { \
834 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1394 }
839 1395
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1414{
859} 1415}
860 1416
861void noinline 1417void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1419{
864 W w_ = (W)w; 1420 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
866 1422
867 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
875 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
876} 1434}
877 1435
878inline_speed void 1436inline_speed void
879feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
880{ 1438{
… …
926 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
928} 1486}
929 1487
930void 1488void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1490{
933 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
935} 1493}
936 1494
… …
939inline_size void 1497inline_size void
940fd_reify (EV_P) 1498fd_reify (EV_P)
941{ 1499{
942 int i; 1500 int i;
943 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
944 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
945 { 1528 {
946 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
948 ev_io *w; 1531 ev_io *w;
949 1532
950 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
951 1535
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1537
955#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1539 {
958 unsigned long arg; 1540 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1543 anfd->events |= (unsigned char)w->events;
1544
1545 if (o_events != anfd->events)
1546 o_reify = EV__IOFDSET; /* actually |= */
961 } 1547 }
962#endif
963 1548
964 { 1549 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1551 }
975 1552
976 fdchangecnt = 0; 1553 fdchangecnt = 0;
977} 1554}
978 1555
… …
990 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
991 } 1568 }
992} 1569}
993 1570
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1572inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
997{ 1574{
998 ev_io *w; 1575 ev_io *w;
999 1576
1000 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1581 }
1005} 1582}
1006 1583
1007/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1585inline_size int ecb_cold
1009fd_valid (int fd) 1586fd_valid (int fd)
1010{ 1587{
1011#ifdef _WIN32 1588#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1590#else
1014 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1015#endif 1592#endif
1016} 1593}
1017 1594
1018/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1019static void noinline 1596static void noinline ecb_cold
1020fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1021{ 1598{
1022 int fd; 1599 int fd;
1023 1600
1024 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1028} 1605}
1029 1606
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1608static void noinline ecb_cold
1032fd_enomem (EV_P) 1609fd_enomem (EV_P)
1033{ 1610{
1034 int fd; 1611 int fd;
1035 1612
1036 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1231 1808
1232/*****************************************************************************/ 1809/*****************************************************************************/
1233 1810
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1812
1236static void noinline 1813static void noinline ecb_cold
1237evpipe_init (EV_P) 1814evpipe_init (EV_P)
1238{ 1815{
1239 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1240 { 1817 {
1241# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1842 }
1266} 1843}
1267 1844
1268inline_size void 1845inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1847{
1271 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1272 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1273 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1868
1278#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1870 if (evfd >= 0)
1280 { 1871 {
1281 uint64_t counter = 1; 1872 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1283 } 1874 }
1284 else 1875 else
1285#endif 1876#endif
1286 /* win32 people keep sending patches that change this write() to send() */ 1877 {
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1878#ifdef _WIN32
1288 /* so when you think this write should be a send instead, please find out */ 1879 WSABUF buf;
1289 /* where your send() is from - it's definitely not the microsoft send, and */ 1880 DWORD sent;
1290 /* tell me. thank you. */ 1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1291 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1292 1888
1293 errno = old_errno; 1889 errno = old_errno;
1294 } 1890 }
1295} 1891}
1296 1892
… …
1299static void 1895static void
1300pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1301{ 1897{
1302 int i; 1898 int i;
1303 1899
1900 if (revents & EV_READ)
1901 {
1304#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1305 if (evfd >= 0) 1903 if (evfd >= 0)
1306 { 1904 {
1307 uint64_t counter; 1905 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1309 } 1907 }
1310 else 1908 else
1311#endif 1909#endif
1312 { 1910 {
1313 char dummy; 1911 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1315 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1316 } 1923 }
1317 1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1928
1929#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 1930 if (sig_pending)
1319 { 1931 {
1320 sig_pending = 0; 1932 sig_pending = 0;
1933
1934 ECB_MEMORY_FENCE_RELEASE;
1321 1935
1322 for (i = EV_NSIG - 1; i--; ) 1936 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 1937 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1325 } 1939 }
1940#endif
1326 1941
1327#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1328 if (async_pending) 1943 if (async_pending)
1329 { 1944 {
1330 async_pending = 0; 1945 async_pending = 0;
1946
1947 ECB_MEMORY_FENCE_RELEASE;
1331 1948
1332 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1334 { 1951 {
1335 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1339#endif 1956#endif
1340} 1957}
1341 1958
1342/*****************************************************************************/ 1959/*****************************************************************************/
1343 1960
1961void
1962ev_feed_signal (int signum) EV_THROW
1963{
1964#if EV_MULTIPLICITY
1965 EV_P = signals [signum - 1].loop;
1966
1967 if (!EV_A)
1968 return;
1969#endif
1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending);
1976}
1977
1344static void 1978static void
1345ev_sighandler (int signum) 1979ev_sighandler (int signum)
1346{ 1980{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 1981#ifdef _WIN32
1352 signal (signum, ev_sighandler); 1982 signal (signum, ev_sighandler);
1353#endif 1983#endif
1354 1984
1355 signals [signum - 1].pending = 1; 1985 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 1986}
1358 1987
1359void noinline 1988void noinline
1360ev_feed_signal_event (EV_P_ int signum) 1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 1990{
1362 WL w; 1991 WL w;
1363 1992
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1365 return; 1994 return;
… …
1461 2090
1462#endif 2091#endif
1463 2092
1464/*****************************************************************************/ 2093/*****************************************************************************/
1465 2094
2095#if EV_USE_IOCP
2096# include "ev_iocp.c"
2097#endif
1466#if EV_USE_PORT 2098#if EV_USE_PORT
1467# include "ev_port.c" 2099# include "ev_port.c"
1468#endif 2100#endif
1469#if EV_USE_KQUEUE 2101#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2102# include "ev_kqueue.c"
… …
1477#endif 2109#endif
1478#if EV_USE_SELECT 2110#if EV_USE_SELECT
1479# include "ev_select.c" 2111# include "ev_select.c"
1480#endif 2112#endif
1481 2113
1482int 2114int ecb_cold
1483ev_version_major (void) 2115ev_version_major (void) EV_THROW
1484{ 2116{
1485 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1486} 2118}
1487 2119
1488int 2120int ecb_cold
1489ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1490{ 2122{
1491 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1492} 2124}
1493 2125
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2126/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2127int inline_size ecb_cold
1496enable_secure (void) 2128enable_secure (void)
1497{ 2129{
1498#ifdef _WIN32 2130#ifdef _WIN32
1499 return 0; 2131 return 0;
1500#else 2132#else
1501 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2134 || getgid () != getegid ();
1503#endif 2135#endif
1504} 2136}
1505 2137
1506unsigned int 2138unsigned int ecb_cold
1507ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1508{ 2140{
1509 unsigned int flags = 0; 2141 unsigned int flags = 0;
1510 2142
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2148
1517 return flags; 2149 return flags;
1518} 2150}
1519 2151
1520unsigned int 2152unsigned int ecb_cold
1521ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1522{ 2154{
1523 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1524 2156
1525#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2169#endif
1538 2170
1539 return flags; 2171 return flags;
1540} 2172}
1541 2173
2174unsigned int ecb_cold
2175ev_embeddable_backends (void) EV_THROW
2176{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2181 flags &= ~EVBACKEND_EPOLL;
2182
2183 return flags;
2184}
2185
1542unsigned int 2186unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2187ev_backend (EV_P) EV_THROW
1556{ 2188{
1557 return backend; 2189 return backend;
1558} 2190}
1559 2191
1560#if EV_FEATURE_API 2192#if EV_FEATURE_API
1561unsigned int 2193unsigned int
1562ev_iteration (EV_P) 2194ev_iteration (EV_P) EV_THROW
1563{ 2195{
1564 return loop_count; 2196 return loop_count;
1565} 2197}
1566 2198
1567unsigned int 2199unsigned int
1568ev_depth (EV_P) 2200ev_depth (EV_P) EV_THROW
1569{ 2201{
1570 return loop_depth; 2202 return loop_depth;
1571} 2203}
1572 2204
1573void 2205void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2207{
1576 io_blocktime = interval; 2208 io_blocktime = interval;
1577} 2209}
1578 2210
1579void 2211void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2213{
1582 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1583} 2215}
1584 2216
1585void 2217void
1586ev_set_userdata (EV_P_ void *data) 2218ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2219{
1588 userdata = data; 2220 userdata = data;
1589} 2221}
1590 2222
1591void * 2223void *
1592ev_userdata (EV_P) 2224ev_userdata (EV_P) EV_THROW
1593{ 2225{
1594 return userdata; 2226 return userdata;
1595} 2227}
1596 2228
2229void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1598{ 2231{
1599 invoke_cb = invoke_pending_cb; 2232 invoke_cb = invoke_pending_cb;
1600} 2233}
1601 2234
2235void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2237{
1604 release_cb = release; 2238 release_cb = release;
1605 acquire_cb = acquire; 2239 acquire_cb = acquire;
1606} 2240}
1607#endif 2241#endif
1608 2242
1609/* initialise a loop structure, must be zero-initialised */ 2243/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2244static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2246{
1613 if (!backend) 2247 if (!backend)
1614 { 2248 {
2249 origflags = flags;
2250
1615#if EV_USE_REALTIME 2251#if EV_USE_REALTIME
1616 if (!have_realtime) 2252 if (!have_realtime)
1617 { 2253 {
1618 struct timespec ts; 2254 struct timespec ts;
1619 2255
… …
1641 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2278 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2281
1646 ev_rt_now = ev_time (); 2282 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2283 mn_now = get_clock ();
1648 now_floor = mn_now; 2284 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2285 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2286#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2287 invoke_cb = ev_invoke_pending;
1652#endif 2288#endif
1653 2289
1654 io_blocktime = 0.; 2290 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2291 timeout_blocktime = 0.;
1656 backend = 0; 2292 backend = 0;
1657 backend_fd = -1; 2293 backend_fd = -1;
1658 sig_pending = 0; 2294 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2295#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2296 async_pending = 0;
1661#endif 2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
1662#if EV_USE_INOTIFY 2300#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2302#endif
1665#if EV_USE_SIGNALFD 2303#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2305#endif
1668 2306
1669 if (!(flags & 0x0000ffffU)) 2307 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1671 2309
2310#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif
1672#if EV_USE_PORT 2313#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2315#endif
1675#if EV_USE_KQUEUE 2316#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2334#endif
1694 } 2335 }
1695} 2336}
1696 2337
1697/* free up a loop structure */ 2338/* free up a loop structure */
1698static void noinline 2339void ecb_cold
1699loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1700{ 2341{
1701 int i; 2342 int i;
2343
2344#if EV_MULTIPLICITY
2345 /* mimic free (0) */
2346 if (!EV_A)
2347 return;
2348#endif
2349
2350#if EV_CLEANUP_ENABLE
2351 /* queue cleanup watchers (and execute them) */
2352 if (expect_false (cleanupcnt))
2353 {
2354 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2355 EV_INVOKE_PENDING;
2356 }
2357#endif
2358
2359#if EV_CHILD_ENABLE
2360 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2361 {
2362 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev);
2364 }
2365#endif
1702 2366
1703 if (ev_is_active (&pipe_w)) 2367 if (ev_is_active (&pipe_w))
1704 { 2368 {
1705 /*ev_ref (EV_A);*/ 2369 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2370 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1728#endif 2392#endif
1729 2393
1730 if (backend_fd >= 0) 2394 if (backend_fd >= 0)
1731 close (backend_fd); 2395 close (backend_fd);
1732 2396
2397#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif
1733#if EV_USE_PORT 2400#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2402#endif
1736#if EV_USE_KQUEUE 2403#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2431 array_free (periodic, EMPTY);
1765#endif 2432#endif
1766#if EV_FORK_ENABLE 2433#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2434 array_free (fork, EMPTY);
1768#endif 2435#endif
2436#if EV_CLEANUP_ENABLE
2437 array_free (cleanup, EMPTY);
2438#endif
1769 array_free (prepare, EMPTY); 2439 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2440 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2441#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2442 array_free (async, EMPTY);
1773#endif 2443#endif
1774 2444
1775 backend = 0; 2445 backend = 0;
2446
2447#if EV_MULTIPLICITY
2448 if (ev_is_default_loop (EV_A))
2449#endif
2450 ev_default_loop_ptr = 0;
2451#if EV_MULTIPLICITY
2452 else
2453 ev_free (EV_A);
2454#endif
1776} 2455}
1777 2456
1778#if EV_USE_INOTIFY 2457#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2458inline_size void infy_fork (EV_P);
1780#endif 2459#endif
… …
1795 infy_fork (EV_A); 2474 infy_fork (EV_A);
1796#endif 2475#endif
1797 2476
1798 if (ev_is_active (&pipe_w)) 2477 if (ev_is_active (&pipe_w))
1799 { 2478 {
1800 /* this "locks" the handlers against writing to the pipe */ 2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2480
1807 ev_ref (EV_A); 2481 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2482 ev_io_stop (EV_A_ &pipe_w);
1809 2483
1810#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
… …
1828 postfork = 0; 2502 postfork = 0;
1829} 2503}
1830 2504
1831#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1832 2506
1833struct ev_loop * 2507struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1835{ 2509{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2511
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
1840 2514
1841 if (ev_backend (EV_A)) 2515 if (ev_backend (EV_A))
1842 return EV_A; 2516 return EV_A;
1843 2517
2518 ev_free (EV_A);
1844 return 0; 2519 return 0;
1845} 2520}
1846 2521
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2522#endif /* multiplicity */
1860 2523
1861#if EV_VERIFY 2524#if EV_VERIFY
1862static void noinline 2525static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1864{ 2527{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2529
1867 if (w->pending) 2530 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2532}
1870 2533
1871static void noinline 2534static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2536{
1874 int i; 2537 int i;
1875 2538
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2544
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2546 }
1884} 2547}
1885 2548
1886static void noinline 2549static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1888{ 2551{
1889 while (cnt--) 2552 while (cnt--)
1890 { 2553 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2556 }
1894} 2557}
1895#endif 2558#endif
1896 2559
1897#if EV_FEATURE_API 2560#if EV_FEATURE_API
1898void 2561void ecb_cold
1899ev_verify (EV_P) 2562ev_verify (EV_P) EV_THROW
1900{ 2563{
1901#if EV_VERIFY 2564#if EV_VERIFY
1902 int i; 2565 int i;
1903 WL w; 2566 WL w, w2;
1904 2567
1905 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
1906 2569
1907 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2573
1911 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
1913 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2580 {
1915 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2591 }
2592 }
1919 2593
1920 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
1922 2596
1923#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 2612#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2613 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2614 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2615#endif
1942 2616
2617#if EV_CLEANUP_ENABLE
2618 assert (cleanupmax >= cleanupcnt);
2619 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2620#endif
2621
1943#if EV_ASYNC_ENABLE 2622#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2623 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2624 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2625#endif
1947 2626
… …
1964#endif 2643#endif
1965} 2644}
1966#endif 2645#endif
1967 2646
1968#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
1969struct ev_loop * 2648struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2649#else
1972int 2650int
2651#endif
1973ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2653{
1976 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
1977 { 2655 {
1978#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 2676
1999 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
2000} 2678}
2001 2679
2002void 2680void
2003ev_default_destroy (void) 2681ev_loop_fork (EV_P) EV_THROW
2004{ 2682{
2005#if EV_MULTIPLICITY
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */ 2683 postfork = 1; /* must be in line with ev_default_fork */
2027} 2684}
2028 2685
2029/*****************************************************************************/ 2686/*****************************************************************************/
2030 2687
2031void 2688void
… …
2033{ 2690{
2034 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
2035} 2692}
2036 2693
2037unsigned int 2694unsigned int
2038ev_pending_count (EV_P) 2695ev_pending_count (EV_P) EV_THROW
2039{ 2696{
2040 int pri; 2697 int pri;
2041 unsigned int count = 0; 2698 unsigned int count = 0;
2042 2699
2043 for (pri = NUMPRI; pri--; ) 2700 for (pri = NUMPRI; pri--; )
… …
2047} 2704}
2048 2705
2049void noinline 2706void noinline
2050ev_invoke_pending (EV_P) 2707ev_invoke_pending (EV_P)
2051{ 2708{
2052 int pri; 2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2053
2054 for (pri = NUMPRI; pri--; )
2055 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
2056 { 2711 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061 2713
2062 p->w->pending = 0; 2714 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
2065 } 2717 }
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 2779 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 2780 }
2129} 2781}
2130 2782
2131#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
2784
2785static void noinline
2786periodic_recalc (EV_P_ ev_periodic *w)
2787{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790
2791 /* the above almost always errs on the low side */
2792 while (at <= ev_rt_now)
2793 {
2794 ev_tstamp nat = at + w->interval;
2795
2796 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at))
2798 {
2799 at = ev_rt_now;
2800 break;
2801 }
2802
2803 at = nat;
2804 }
2805
2806 ev_at (w) = at;
2807}
2808
2132/* make periodics pending */ 2809/* make periodics pending */
2133inline_size void 2810inline_size void
2134periodics_reify (EV_P) 2811periodics_reify (EV_P)
2135{ 2812{
2136 EV_FREQUENT_CHECK; 2813 EV_FREQUENT_CHECK;
… …
2155 ANHE_at_cache (periodics [HEAP0]); 2832 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 2833 downheap (periodics, periodiccnt, HEAP0);
2157 } 2834 }
2158 else if (w->interval) 2835 else if (w->interval)
2159 { 2836 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 2838 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 2839 downheap (periodics, periodiccnt, HEAP0);
2176 } 2840 }
2177 else 2841 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 2850 }
2187} 2851}
2188 2852
2189/* simply recalculate all periodics */ 2853/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2854/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 2855static void noinline ecb_cold
2192periodics_reschedule (EV_P) 2856periodics_reschedule (EV_P)
2193{ 2857{
2194 int i; 2858 int i;
2195 2859
2196 /* adjust periodics after time jump */ 2860 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2863 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 2864
2201 if (w->reschedule_cb) 2865 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2866 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 2867 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2868 periodic_recalc (EV_A_ w);
2205 2869
2206 ANHE_at_cache (periodics [i]); 2870 ANHE_at_cache (periodics [i]);
2207 } 2871 }
2208 2872
2209 reheap (periodics, periodiccnt); 2873 reheap (periodics, periodiccnt);
2210} 2874}
2211#endif 2875#endif
2212 2876
2213/* adjust all timers by a given offset */ 2877/* adjust all timers by a given offset */
2214static void noinline 2878static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 2879timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 2880{
2217 int i; 2881 int i;
2218 2882
2219 for (i = 0; i < timercnt; ++i) 2883 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 2920 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 2921 * in the unlikely event of having been preempted here.
2258 */ 2922 */
2259 for (i = 4; --i; ) 2923 for (i = 4; --i; )
2260 { 2924 {
2925 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 2926 rtmn_diff = ev_rt_now - mn_now;
2262 2927
2928 diff = odiff - rtmn_diff;
2929
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2930 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 2931 return; /* all is well */
2265 2932
2266 ev_rt_now = ev_time (); 2933 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 2934 mn_now = get_clock ();
2268 now_floor = mn_now; 2935 now_floor = mn_now;
… …
2290 2957
2291 mn_now = ev_rt_now; 2958 mn_now = ev_rt_now;
2292 } 2959 }
2293} 2960}
2294 2961
2295void 2962int
2296ev_loop (EV_P_ int flags) 2963ev_run (EV_P_ int flags)
2297{ 2964{
2298#if EV_FEATURE_API 2965#if EV_FEATURE_API
2299 ++loop_depth; 2966 ++loop_depth;
2300#endif 2967#endif
2301 2968
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2969 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 2970
2304 loop_done = EVUNLOOP_CANCEL; 2971 loop_done = EVBREAK_CANCEL;
2305 2972
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2973 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 2974
2308 do 2975 do
2309 { 2976 {
… …
2352 /* calculate blocking time */ 3019 /* calculate blocking time */
2353 { 3020 {
2354 ev_tstamp waittime = 0.; 3021 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3022 ev_tstamp sleeptime = 0.;
2356 3023
3024 /* remember old timestamp for io_blocktime calculation */
3025 ev_tstamp prev_mn_now = mn_now;
3026
3027 /* update time to cancel out callback processing overhead */
3028 time_update (EV_A_ 1e100);
3029
3030 /* from now on, we want a pipe-wake-up */
3031 pipe_write_wanted = 1;
3032
3033 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3034
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3035 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3036 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3037 waittime = MAX_BLOCKTIME;
2366 3038
2367 if (timercnt) 3039 if (timercnt)
2368 { 3040 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3042 if (waittime > to) waittime = to;
2371 } 3043 }
2372 3044
2373#if EV_PERIODIC_ENABLE 3045#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3046 if (periodiccnt)
2375 { 3047 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3049 if (waittime > to) waittime = to;
2378 } 3050 }
2379#endif 3051#endif
2380 3052
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3053 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3054 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3055 waittime = timeout_blocktime;
3056
3057 /* at this point, we NEED to wait, so we have to ensure */
3058 /* to pass a minimum nonzero value to the backend */
3059 if (expect_false (waittime < backend_mintime))
3060 waittime = backend_mintime;
2384 3061
2385 /* extra check because io_blocktime is commonly 0 */ 3062 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3063 if (expect_false (io_blocktime))
2387 { 3064 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3065 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3066
2390 if (sleeptime > waittime - backend_fudge) 3067 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3068 sleeptime = waittime - backend_mintime;
2392 3069
2393 if (expect_true (sleeptime > 0.)) 3070 if (expect_true (sleeptime > 0.))
2394 { 3071 {
2395 ev_sleep (sleeptime); 3072 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3073 waittime -= sleeptime;
… …
2399 } 3076 }
2400 3077
2401#if EV_FEATURE_API 3078#if EV_FEATURE_API
2402 ++loop_count; 3079 ++loop_count;
2403#endif 3080#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3081 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3082 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086
3087 if (pipe_write_skipped)
3088 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 }
3092
2407 3093
2408 /* update ev_rt_now, do magic */ 3094 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3095 time_update (EV_A_ waittime + sleeptime);
2410 } 3096 }
2411 3097
… …
2429 EV_INVOKE_PENDING; 3115 EV_INVOKE_PENDING;
2430 } 3116 }
2431 while (expect_true ( 3117 while (expect_true (
2432 activecnt 3118 activecnt
2433 && !loop_done 3119 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3120 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3121 ));
2436 3122
2437 if (loop_done == EVUNLOOP_ONE) 3123 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3124 loop_done = EVBREAK_CANCEL;
2439 3125
2440#if EV_FEATURE_API 3126#if EV_FEATURE_API
2441 --loop_depth; 3127 --loop_depth;
2442#endif 3128#endif
3129
3130 return activecnt;
2443} 3131}
2444 3132
2445void 3133void
2446ev_unloop (EV_P_ int how) 3134ev_break (EV_P_ int how) EV_THROW
2447{ 3135{
2448 loop_done = how; 3136 loop_done = how;
2449} 3137}
2450 3138
2451void 3139void
2452ev_ref (EV_P) 3140ev_ref (EV_P) EV_THROW
2453{ 3141{
2454 ++activecnt; 3142 ++activecnt;
2455} 3143}
2456 3144
2457void 3145void
2458ev_unref (EV_P) 3146ev_unref (EV_P) EV_THROW
2459{ 3147{
2460 --activecnt; 3148 --activecnt;
2461} 3149}
2462 3150
2463void 3151void
2464ev_now_update (EV_P) 3152ev_now_update (EV_P) EV_THROW
2465{ 3153{
2466 time_update (EV_A_ 1e100); 3154 time_update (EV_A_ 1e100);
2467} 3155}
2468 3156
2469void 3157void
2470ev_suspend (EV_P) 3158ev_suspend (EV_P) EV_THROW
2471{ 3159{
2472 ev_now_update (EV_A); 3160 ev_now_update (EV_A);
2473} 3161}
2474 3162
2475void 3163void
2476ev_resume (EV_P) 3164ev_resume (EV_P) EV_THROW
2477{ 3165{
2478 ev_tstamp mn_prev = mn_now; 3166 ev_tstamp mn_prev = mn_now;
2479 3167
2480 ev_now_update (EV_A); 3168 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3169 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3208 w->pending = 0;
2521 } 3209 }
2522} 3210}
2523 3211
2524int 3212int
2525ev_clear_pending (EV_P_ void *w) 3213ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3214{
2527 W w_ = (W)w; 3215 W w_ = (W)w;
2528 int pending = w_->pending; 3216 int pending = w_->pending;
2529 3217
2530 if (expect_true (pending)) 3218 if (expect_true (pending))
… …
2563} 3251}
2564 3252
2565/*****************************************************************************/ 3253/*****************************************************************************/
2566 3254
2567void noinline 3255void noinline
2568ev_io_start (EV_P_ ev_io *w) 3256ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3257{
2570 int fd = w->fd; 3258 int fd = w->fd;
2571 3259
2572 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2573 return; 3261 return;
… …
2579 3267
2580 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3270 wlist_add (&anfds[fd].head, (WL)w);
2583 3271
3272 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3275 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3276 w->events &= ~EV__IOFDSET;
2586 3277
2587 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2588} 3279}
2589 3280
2590void noinline 3281void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3282ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3283{
2593 clear_pending (EV_A_ (W)w); 3284 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3285 if (expect_false (!ev_is_active (w)))
2595 return; 3286 return;
2596 3287
… …
2599 EV_FREQUENT_CHECK; 3290 EV_FREQUENT_CHECK;
2600 3291
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3292 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3293 ev_stop (EV_A_ (W)w);
2603 3294
2604 fd_change (EV_A_ w->fd, 1); 3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3296
2606 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2607} 3298}
2608 3299
2609void noinline 3300void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3302{
2612 if (expect_false (ev_is_active (w))) 3303 if (expect_false (ev_is_active (w)))
2613 return; 3304 return;
2614 3305
2615 ev_at (w) += mn_now; 3306 ev_at (w) += mn_now;
… …
2629 3320
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3322}
2632 3323
2633void noinline 3324void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3326{
2636 clear_pending (EV_A_ (W)w); 3327 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3328 if (expect_false (!ev_is_active (w)))
2638 return; 3329 return;
2639 3330
… …
2659 3350
2660 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2661} 3352}
2662 3353
2663void noinline 3354void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3356{
2666 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
3358
3359 clear_pending (EV_A_ (W)w);
2667 3360
2668 if (ev_is_active (w)) 3361 if (ev_is_active (w))
2669 { 3362 {
2670 if (w->repeat) 3363 if (w->repeat)
2671 { 3364 {
… …
2684 3377
2685 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
2686} 3379}
2687 3380
2688ev_tstamp 3381ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3383{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3385}
2693 3386
2694#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2695void noinline 3388void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3390{
2698 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2699 return; 3392 return;
2700 3393
2701 if (w->reschedule_cb) 3394 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3395 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3396 else if (w->interval)
2704 { 3397 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3398 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3399 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3400 }
2709 else 3401 else
2710 ev_at (w) = w->offset; 3402 ev_at (w) = w->offset;
2711 3403
2712 EV_FREQUENT_CHECK; 3404 EV_FREQUENT_CHECK;
… …
2722 3414
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3416}
2725 3417
2726void noinline 3418void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3420{
2729 clear_pending (EV_A_ (W)w); 3421 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3422 if (expect_false (!ev_is_active (w)))
2731 return; 3423 return;
2732 3424
… …
2750 3442
2751 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2752} 3444}
2753 3445
2754void noinline 3446void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3448{
2757 /* TODO: use adjustheap and recalculation */ 3449 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3450 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3451 ev_periodic_start (EV_A_ w);
2760} 3452}
… …
2765#endif 3457#endif
2766 3458
2767#if EV_SIGNAL_ENABLE 3459#if EV_SIGNAL_ENABLE
2768 3460
2769void noinline 3461void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3463{
2772 if (expect_false (ev_is_active (w))) 3464 if (expect_false (ev_is_active (w)))
2773 return; 3465 return;
2774 3466
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2833 sa.sa_handler = ev_sighandler; 3525 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3526 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3527 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3528 sigaction (w->signum, &sa, 0);
2837 3529
3530 if (origflags & EVFLAG_NOSIGMASK)
3531 {
2838 sigemptyset (&sa.sa_mask); 3532 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3533 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3534 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3535 }
2841#endif 3536#endif
2842 } 3537 }
2843 3538
2844 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2845} 3540}
2846 3541
2847void noinline 3542void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3544{
2850 clear_pending (EV_A_ (W)w); 3545 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3546 if (expect_false (!ev_is_active (w)))
2852 return; 3547 return;
2853 3548
… …
2884#endif 3579#endif
2885 3580
2886#if EV_CHILD_ENABLE 3581#if EV_CHILD_ENABLE
2887 3582
2888void 3583void
2889ev_child_start (EV_P_ ev_child *w) 3584ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3585{
2891#if EV_MULTIPLICITY 3586#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3588#endif
2894 if (expect_false (ev_is_active (w))) 3589 if (expect_false (ev_is_active (w)))
… …
2901 3596
2902 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2903} 3598}
2904 3599
2905void 3600void
2906ev_child_stop (EV_P_ ev_child *w) 3601ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3602{
2908 clear_pending (EV_A_ (W)w); 3603 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3604 if (expect_false (!ev_is_active (w)))
2910 return; 3605 return;
2911 3606
… …
2986 if (!pend || pend == path) 3681 if (!pend || pend == path)
2987 break; 3682 break;
2988 3683
2989 *pend = 0; 3684 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 3685 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 3686 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3687 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 3688 }
2994 } 3689 }
2995 3690
2996 if (w->wd >= 0) 3691 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3758 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 3759 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 3760 }
3066} 3761}
3067 3762
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 3763inline_size void ecb_cold
3101ev_check_2625 (EV_P) 3764ev_check_2625 (EV_P)
3102{ 3765{
3103 /* kernels < 2.6.25 are borked 3766 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 3768 */
… …
3110} 3773}
3111 3774
3112inline_size int 3775inline_size int
3113infy_newfd (void) 3776infy_newfd (void)
3114{ 3777{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3778#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3779 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 3780 if (fd >= 0)
3118 return fd; 3781 return fd;
3119#endif 3782#endif
3120 return inotify_init (); 3783 return inotify_init ();
… …
3195#else 3858#else
3196# define EV_LSTAT(p,b) lstat (p, b) 3859# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 3860#endif
3198 3861
3199void 3862void
3200ev_stat_stat (EV_P_ ev_stat *w) 3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 3864{
3202 if (lstat (w->path, &w->attr) < 0) 3865 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 3866 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 3867 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 3868 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 3907 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 3908 }
3246} 3909}
3247 3910
3248void 3911void
3249ev_stat_start (EV_P_ ev_stat *w) 3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 3913{
3251 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3252 return; 3915 return;
3253 3916
3254 ev_stat_stat (EV_A_ w); 3917 ev_stat_stat (EV_A_ w);
… …
3275 3938
3276 EV_FREQUENT_CHECK; 3939 EV_FREQUENT_CHECK;
3277} 3940}
3278 3941
3279void 3942void
3280ev_stat_stop (EV_P_ ev_stat *w) 3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 3944{
3282 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
3284 return; 3947 return;
3285 3948
… …
3301} 3964}
3302#endif 3965#endif
3303 3966
3304#if EV_IDLE_ENABLE 3967#if EV_IDLE_ENABLE
3305void 3968void
3306ev_idle_start (EV_P_ ev_idle *w) 3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 3970{
3308 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
3309 return; 3972 return;
3310 3973
3311 pri_adjust (EV_A_ (W)w); 3974 pri_adjust (EV_A_ (W)w);
… …
3324 3987
3325 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3326} 3989}
3327 3990
3328void 3991void
3329ev_idle_stop (EV_P_ ev_idle *w) 3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 3993{
3331 clear_pending (EV_A_ (W)w); 3994 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 3995 if (expect_false (!ev_is_active (w)))
3333 return; 3996 return;
3334 3997
… …
3348} 4011}
3349#endif 4012#endif
3350 4013
3351#if EV_PREPARE_ENABLE 4014#if EV_PREPARE_ENABLE
3352void 4015void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4017{
3355 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3356 return; 4019 return;
3357 4020
3358 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
3363 4026
3364 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3365} 4028}
3366 4029
3367void 4030void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4032{
3370 clear_pending (EV_A_ (W)w); 4033 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4034 if (expect_false (!ev_is_active (w)))
3372 return; 4035 return;
3373 4036
… …
3386} 4049}
3387#endif 4050#endif
3388 4051
3389#if EV_CHECK_ENABLE 4052#if EV_CHECK_ENABLE
3390void 4053void
3391ev_check_start (EV_P_ ev_check *w) 4054ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4055{
3393 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3394 return; 4057 return;
3395 4058
3396 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
… …
3401 4064
3402 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
3403} 4066}
3404 4067
3405void 4068void
3406ev_check_stop (EV_P_ ev_check *w) 4069ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4070{
3408 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4072 if (expect_false (!ev_is_active (w)))
3410 return; 4073 return;
3411 4074
… …
3424} 4087}
3425#endif 4088#endif
3426 4089
3427#if EV_EMBED_ENABLE 4090#if EV_EMBED_ENABLE
3428void noinline 4091void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4093{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4094 ev_run (w->other, EVRUN_NOWAIT);
3432} 4095}
3433 4096
3434static void 4097static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4098embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4099{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4100 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4101
3439 if (ev_cb (w)) 4102 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4103 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4104 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4105 ev_run (w->other, EVRUN_NOWAIT);
3443} 4106}
3444 4107
3445static void 4108static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4109embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4110{
… …
3451 EV_P = w->other; 4114 EV_P = w->other;
3452 4115
3453 while (fdchangecnt) 4116 while (fdchangecnt)
3454 { 4117 {
3455 fd_reify (EV_A); 4118 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4119 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4120 }
3458 } 4121 }
3459} 4122}
3460 4123
3461static void 4124static void
… …
3467 4130
3468 { 4131 {
3469 EV_P = w->other; 4132 EV_P = w->other;
3470 4133
3471 ev_loop_fork (EV_A); 4134 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4135 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4136 }
3474 4137
3475 ev_embed_start (EV_A_ w); 4138 ev_embed_start (EV_A_ w);
3476} 4139}
3477 4140
… …
3482 ev_idle_stop (EV_A_ idle); 4145 ev_idle_stop (EV_A_ idle);
3483} 4146}
3484#endif 4147#endif
3485 4148
3486void 4149void
3487ev_embed_start (EV_P_ ev_embed *w) 4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4151{
3489 if (expect_false (ev_is_active (w))) 4152 if (expect_false (ev_is_active (w)))
3490 return; 4153 return;
3491 4154
3492 { 4155 {
… …
3513 4176
3514 EV_FREQUENT_CHECK; 4177 EV_FREQUENT_CHECK;
3515} 4178}
3516 4179
3517void 4180void
3518ev_embed_stop (EV_P_ ev_embed *w) 4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4182{
3520 clear_pending (EV_A_ (W)w); 4183 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4184 if (expect_false (!ev_is_active (w)))
3522 return; 4185 return;
3523 4186
… …
3533} 4196}
3534#endif 4197#endif
3535 4198
3536#if EV_FORK_ENABLE 4199#if EV_FORK_ENABLE
3537void 4200void
3538ev_fork_start (EV_P_ ev_fork *w) 4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4202{
3540 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3541 return; 4204 return;
3542 4205
3543 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
… …
3548 4211
3549 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3550} 4213}
3551 4214
3552void 4215void
3553ev_fork_stop (EV_P_ ev_fork *w) 4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4217{
3555 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
3557 return; 4220 return;
3558 4221
… …
3569 4232
3570 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3571} 4234}
3572#endif 4235#endif
3573 4236
4237#if EV_CLEANUP_ENABLE
4238void
4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4240{
4241 if (expect_false (ev_is_active (w)))
4242 return;
4243
4244 EV_FREQUENT_CHECK;
4245
4246 ev_start (EV_A_ (W)w, ++cleanupcnt);
4247 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4248 cleanups [cleanupcnt - 1] = w;
4249
4250 /* cleanup watchers should never keep a refcount on the loop */
4251 ev_unref (EV_A);
4252 EV_FREQUENT_CHECK;
4253}
4254
4255void
4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4257{
4258 clear_pending (EV_A_ (W)w);
4259 if (expect_false (!ev_is_active (w)))
4260 return;
4261
4262 EV_FREQUENT_CHECK;
4263 ev_ref (EV_A);
4264
4265 {
4266 int active = ev_active (w);
4267
4268 cleanups [active - 1] = cleanups [--cleanupcnt];
4269 ev_active (cleanups [active - 1]) = active;
4270 }
4271
4272 ev_stop (EV_A_ (W)w);
4273
4274 EV_FREQUENT_CHECK;
4275}
4276#endif
4277
3574#if EV_ASYNC_ENABLE 4278#if EV_ASYNC_ENABLE
3575void 4279void
3576ev_async_start (EV_P_ ev_async *w) 4280ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4281{
3578 if (expect_false (ev_is_active (w))) 4282 if (expect_false (ev_is_active (w)))
3579 return; 4283 return;
4284
4285 w->sent = 0;
3580 4286
3581 evpipe_init (EV_A); 4287 evpipe_init (EV_A);
3582 4288
3583 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3584 4290
… …
3588 4294
3589 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3590} 4296}
3591 4297
3592void 4298void
3593ev_async_stop (EV_P_ ev_async *w) 4299ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4300{
3595 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3597 return; 4303 return;
3598 4304
… …
3609 4315
3610 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3611} 4317}
3612 4318
3613void 4319void
3614ev_async_send (EV_P_ ev_async *w) 4320ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4321{
3616 w->sent = 1; 4322 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4323 evpipe_write (EV_A_ &async_pending);
3618} 4324}
3619#endif 4325#endif
… …
3656 4362
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4364}
3659 4365
3660void 4366void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4368{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4370
3665 if (expect_false (!once)) 4371 if (expect_false (!once))
3666 { 4372 {
… …
3687} 4393}
3688 4394
3689/*****************************************************************************/ 4395/*****************************************************************************/
3690 4396
3691#if EV_WALK_ENABLE 4397#if EV_WALK_ENABLE
3692void 4398void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4400{
3695 int i, j; 4401 int i, j;
3696 ev_watcher_list *wl, *wn; 4402 ev_watcher_list *wl, *wn;
3697 4403
3698 if (types & (EV_IO | EV_EMBED)) 4404 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4447 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4448#endif
3743 4449
3744#if EV_IDLE_ENABLE 4450#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4451 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4452 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4453 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4454 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4455#endif
3750 4456
3751#if EV_FORK_ENABLE 4457#if EV_FORK_ENABLE
… …
3804 4510
3805#if EV_MULTIPLICITY 4511#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4512 #include "ev_wrap.h"
3807#endif 4513#endif
3808 4514
3809#ifdef __cplusplus
3810}
3811#endif
3812

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