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Comparing libev/ev.c (file contents):
Revision 1.348 by root, Fri Oct 15 22:48:25 2010 UTC vs.
Revision 1.431 by root, Wed May 9 16:51:33 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
451#endif 452#endif
452 453
453/**/ 454/**/
454 455
455#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
… …
457#else 458#else
458# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
459#endif 460#endif
460 461
461/* 462/*
462 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 465 */
469#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 */
470 468
471#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) */
472#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) */
473 471
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 474
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;
477#if __GNUC__ >= 4 516 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
479# 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
480#else 523#else
481# define expect(expr,value) (expr) 524 #include <inttypes.h>
482# define noinline
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484# define inline
485# 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)))
486#endif 539 #endif
540#endif
487 541
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. */
488#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#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
490#define inline_size static inline 957#define inline_size ecb_inline
491 958
492#if EV_FEATURE_CODE 959#if EV_FEATURE_CODE
493# define inline_speed static inline 960# define inline_speed ecb_inline
494#else 961#else
495# define inline_speed static noinline 962# define inline_speed static noinline
496#endif 963#endif
497 964
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1004# include "ev_win32.c"
538#endif 1005#endif
539 1006
540/*****************************************************************************/ 1007/*****************************************************************************/
541 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
542#if EV_AVOID_STDIO 1099#if EV_AVOID_STDIO
543static void noinline 1100static void noinline ecb_cold
544ev_printerr (const char *msg) 1101ev_printerr (const char *msg)
545{ 1102{
546 write (STDERR_FILENO, msg, strlen (msg)); 1103 write (STDERR_FILENO, msg, strlen (msg));
547} 1104}
548#endif 1105#endif
549 1106
550static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
551 1108
552void 1109void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
554{ 1111{
555 syserr_cb = cb; 1112 syserr_cb = cb;
556} 1113}
557 1114
558static void noinline 1115static void noinline ecb_cold
559ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
560{ 1117{
561 if (!msg) 1118 if (!msg)
562 msg = "(libev) system error"; 1119 msg = "(libev) system error";
563 1120
564 if (syserr_cb) 1121 if (syserr_cb)
565 syserr_cb (msg); 1122 syserr_cb (msg);
566 else 1123 else
567 { 1124 {
568#if EV_AVOID_STDIO 1125#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1126 ev_printerr (msg);
572 ev_printerr (": "); 1127 ev_printerr (": ");
573 ev_printerr (err); 1128 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1129 ev_printerr ("\n");
575#else 1130#else
576 perror (msg); 1131 perror (msg);
577#endif 1132#endif
578 abort (); 1133 abort ();
… …
596 free (ptr); 1151 free (ptr);
597 return 0; 1152 return 0;
598#endif 1153#endif
599} 1154}
600 1155
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1157
603void 1158void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
605{ 1160{
606 alloc = cb; 1161 alloc = cb;
607} 1162}
608 1163
609inline_speed void * 1164inline_speed void *
… …
612 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
613 1168
614 if (!ptr && size) 1169 if (!ptr && size)
615 { 1170 {
616#if EV_AVOID_STDIO 1171#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1173#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1175#endif
621 abort (); 1176 abort ();
622 } 1177 }
623 1178
624 return ptr; 1179 return ptr;
… …
641 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 */
642 unsigned char unused; 1197 unsigned char unused;
643#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1200#endif
646#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
648#endif 1206#endif
649} ANFD; 1207} ANFD;
650 1208
651/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
652typedef struct 1210typedef struct
… …
694 #undef VAR 1252 #undef VAR
695 }; 1253 };
696 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
697 1255
698 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
699 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 */
700 1258
701#else 1259#else
702 1260
703 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 */
704 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1263 #include "ev_vars.h"
706 #undef VAR 1264 #undef VAR
707 1265
708 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1278#endif
721 1279
722#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
723 1281
724/*****************************************************************************/ 1282/*****************************************************************************/
725 1283
726#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1285ev_tstamp
728ev_time (void) 1286ev_time (void) EV_THROW
729{ 1287{
730#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
732 { 1290 {
733 struct timespec ts; 1291 struct timespec ts;
… …
757 return ev_time (); 1315 return ev_time ();
758} 1316}
759 1317
760#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
761ev_tstamp 1319ev_tstamp
762ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
763{ 1321{
764 return ev_rt_now; 1322 return ev_rt_now;
765} 1323}
766#endif 1324#endif
767 1325
768void 1326void
769ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
770{ 1328{
771 if (delay > 0.) 1329 if (delay > 0.)
772 { 1330 {
773#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
774 struct timespec ts; 1332 struct timespec ts;
775 1333
776 EV_TS_SET (ts, delay); 1334 EV_TS_SET (ts, delay);
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 /* 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 */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 1343 /* by older ones */
786 EV_TS_SET (tv, delay); 1344 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
788#endif 1346#endif
789 } 1347 }
790} 1348}
791 1349
… …
802 1360
803 do 1361 do
804 ncur <<= 1; 1362 ncur <<= 1;
805 while (cnt > ncur); 1363 while (cnt > ncur);
806 1364
807 /* 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 */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1367 {
810 ncur *= elem; 1368 ncur *= elem;
811 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);
812 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1372 }
815 1373
816 return ncur; 1374 return ncur;
817} 1375}
818 1376
819static noinline void * 1377static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1379{
822 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
824} 1382}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1386
829#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
831 { \ 1389 { \
832 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1394 }
837 1395
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1414{
857} 1415}
858 1416
859void noinline 1417void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1419{
862 W w_ = (W)w; 1420 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
864 1422
865 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
873 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
874} 1434}
875 1435
876inline_speed void 1436inline_speed void
877feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
878{ 1438{
… …
924 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
926} 1486}
927 1487
928void 1488void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1490{
931 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
933} 1493}
934 1494
… …
937inline_size void 1497inline_size void
938fd_reify (EV_P) 1498fd_reify (EV_P)
939{ 1499{
940 int i; 1500 int i;
941 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
942 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
943 { 1528 {
944 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
946 ev_io *w; 1531 ev_io *w;
947 1532
948 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
949 1535
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1537
953#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1539 {
956 unsigned long arg; 1540 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541
958 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 |= */
959 } 1547 }
960#endif
961 1548
962 { 1549 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1551 }
973 1552
974 fdchangecnt = 0; 1553 fdchangecnt = 0;
975} 1554}
976 1555
… …
988 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
989 } 1568 }
990} 1569}
991 1570
992/* 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 */
993inline_speed void 1572inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
995{ 1574{
996 ev_io *w; 1575 ev_io *w;
997 1576
998 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
1001 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);
1002 } 1581 }
1003} 1582}
1004 1583
1005/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1585inline_size int ecb_cold
1007fd_valid (int fd) 1586fd_valid (int fd)
1008{ 1587{
1009#ifdef _WIN32 1588#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1590#else
1012 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1013#endif 1592#endif
1014} 1593}
1015 1594
1016/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1017static void noinline 1596static void noinline ecb_cold
1018fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1019{ 1598{
1020 int fd; 1599 int fd;
1021 1600
1022 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1026} 1605}
1027 1606
1028/* 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 */
1029static void noinline 1608static void noinline ecb_cold
1030fd_enomem (EV_P) 1609fd_enomem (EV_P)
1031{ 1610{
1032 int fd; 1611 int fd;
1033 1612
1034 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1229 1808
1230/*****************************************************************************/ 1809/*****************************************************************************/
1231 1810
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 1812
1234static void noinline 1813static void noinline ecb_cold
1235evpipe_init (EV_P) 1814evpipe_init (EV_P)
1236{ 1815{
1237 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1238 { 1817 {
1239# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1261 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 } 1842 }
1264} 1843}
1265 1844
1266inline_size void 1845inline_speed void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{ 1847{
1269 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)
1270 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1271 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275 1868
1276#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1277 if (evfd >= 0) 1870 if (evfd >= 0)
1278 { 1871 {
1279 uint64_t counter = 1; 1872 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1281 } 1874 }
1282 else 1875 else
1283#endif 1876#endif
1284 /* win32 people keep sending patches that change this write() to send() */ 1877 {
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1878#ifdef _WIN32
1286 /* so when you think this write should be a send instead, please find out */ 1879 WSABUF buf;
1287 /* where your send() is from - it's definitely not the microsoft send, and */ 1880 DWORD sent;
1288 /* 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
1289 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1290 1888
1291 errno = old_errno; 1889 errno = old_errno;
1292 } 1890 }
1293} 1891}
1294 1892
… …
1297static void 1895static void
1298pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1299{ 1897{
1300 int i; 1898 int i;
1301 1899
1900 if (revents & EV_READ)
1901 {
1302#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1303 if (evfd >= 0) 1903 if (evfd >= 0)
1304 { 1904 {
1305 uint64_t counter; 1905 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1307 } 1907 }
1308 else 1908 else
1309#endif 1909#endif
1310 { 1910 {
1311 char dummy; 1911 char dummy[4];
1312 /* 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 buf.buf = dummy;
1916 buf.len = sizeof (dummy);
1917 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1918#else
1313 read (evpipe [0], &dummy, 1); 1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1314 } 1922 }
1315 1923
1924 pipe_write_skipped = 0;
1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 1929 if (sig_pending)
1317 { 1930 {
1318 sig_pending = 0; 1931 sig_pending = 0;
1932
1933 ECB_MEMORY_FENCE_RELEASE;
1319 1934
1320 for (i = EV_NSIG - 1; i--; ) 1935 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 1936 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 1937 ev_feed_signal_event (EV_A_ i + 1);
1323 } 1938 }
1939#endif
1324 1940
1325#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1326 if (async_pending) 1942 if (async_pending)
1327 { 1943 {
1328 async_pending = 0; 1944 async_pending = 0;
1945
1946 ECB_MEMORY_FENCE_RELEASE;
1329 1947
1330 for (i = asynccnt; i--; ) 1948 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 1949 if (asyncs [i]->sent)
1332 { 1950 {
1333 asyncs [i]->sent = 0; 1951 asyncs [i]->sent = 0;
… …
1337#endif 1955#endif
1338} 1956}
1339 1957
1340/*****************************************************************************/ 1958/*****************************************************************************/
1341 1959
1960void
1961ev_feed_signal (int signum) EV_THROW
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = signals [signum - 1].loop;
1965
1966 if (!EV_A)
1967 return;
1968#endif
1969
1970 if (!ev_active (&pipe_w))
1971 return;
1972
1973 signals [signum - 1].pending = 1;
1974 evpipe_write (EV_A_ &sig_pending);
1975}
1976
1342static void 1977static void
1343ev_sighandler (int signum) 1978ev_sighandler (int signum)
1344{ 1979{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 1980#ifdef _WIN32
1350 signal (signum, ev_sighandler); 1981 signal (signum, ev_sighandler);
1351#endif 1982#endif
1352 1983
1353 signals [signum - 1].pending = 1; 1984 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 1985}
1356 1986
1357void noinline 1987void noinline
1358ev_feed_signal_event (EV_P_ int signum) 1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 1989{
1360 WL w; 1990 WL w;
1361 1991
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return; 1993 return;
… …
1459 2089
1460#endif 2090#endif
1461 2091
1462/*****************************************************************************/ 2092/*****************************************************************************/
1463 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
1464#if EV_USE_PORT 2097#if EV_USE_PORT
1465# include "ev_port.c" 2098# include "ev_port.c"
1466#endif 2099#endif
1467#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
… …
1475#endif 2108#endif
1476#if EV_USE_SELECT 2109#if EV_USE_SELECT
1477# include "ev_select.c" 2110# include "ev_select.c"
1478#endif 2111#endif
1479 2112
1480int 2113int ecb_cold
1481ev_version_major (void) 2114ev_version_major (void) EV_THROW
1482{ 2115{
1483 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
1484} 2117}
1485 2118
1486int 2119int ecb_cold
1487ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
1488{ 2121{
1489 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
1490} 2123}
1491 2124
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2125/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2126int inline_size ecb_cold
1494enable_secure (void) 2127enable_secure (void)
1495{ 2128{
1496#ifdef _WIN32 2129#ifdef _WIN32
1497 return 0; 2130 return 0;
1498#else 2131#else
1499 return getuid () != geteuid () 2132 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2133 || getgid () != getegid ();
1501#endif 2134#endif
1502} 2135}
1503 2136
1504unsigned int 2137unsigned int ecb_cold
1505ev_supported_backends (void) 2138ev_supported_backends (void) EV_THROW
1506{ 2139{
1507 unsigned int flags = 0; 2140 unsigned int flags = 0;
1508 2141
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2147
1515 return flags; 2148 return flags;
1516} 2149}
1517 2150
1518unsigned int 2151unsigned int ecb_cold
1519ev_recommended_backends (void) 2152ev_recommended_backends (void) EV_THROW
1520{ 2153{
1521 unsigned int flags = ev_supported_backends (); 2154 unsigned int flags = ev_supported_backends ();
1522 2155
1523#ifndef __NetBSD__ 2156#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2157 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2168#endif
1536 2169
1537 return flags; 2170 return flags;
1538} 2171}
1539 2172
2173unsigned int ecb_cold
2174ev_embeddable_backends (void) EV_THROW
2175{
2176 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2177
2178 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2179 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2180 flags &= ~EVBACKEND_EPOLL;
2181
2182 return flags;
2183}
2184
1540unsigned int 2185unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2186ev_backend (EV_P) EV_THROW
1554{ 2187{
1555 return backend; 2188 return backend;
1556} 2189}
1557 2190
1558#if EV_FEATURE_API 2191#if EV_FEATURE_API
1559unsigned int 2192unsigned int
1560ev_iteration (EV_P) 2193ev_iteration (EV_P) EV_THROW
1561{ 2194{
1562 return loop_count; 2195 return loop_count;
1563} 2196}
1564 2197
1565unsigned int 2198unsigned int
1566ev_depth (EV_P) 2199ev_depth (EV_P) EV_THROW
1567{ 2200{
1568 return loop_depth; 2201 return loop_depth;
1569} 2202}
1570 2203
1571void 2204void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2206{
1574 io_blocktime = interval; 2207 io_blocktime = interval;
1575} 2208}
1576 2209
1577void 2210void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2212{
1580 timeout_blocktime = interval; 2213 timeout_blocktime = interval;
1581} 2214}
1582 2215
1583void 2216void
1584ev_set_userdata (EV_P_ void *data) 2217ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2218{
1586 userdata = data; 2219 userdata = data;
1587} 2220}
1588 2221
1589void * 2222void *
1590ev_userdata (EV_P) 2223ev_userdata (EV_P) EV_THROW
1591{ 2224{
1592 return userdata; 2225 return userdata;
1593} 2226}
1594 2227
2228void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2229ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2230{
1597 invoke_cb = invoke_pending_cb; 2231 invoke_cb = invoke_pending_cb;
1598} 2232}
1599 2233
2234void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2235ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2236{
1602 release_cb = release; 2237 release_cb = release;
1603 acquire_cb = acquire; 2238 acquire_cb = acquire;
1604} 2239}
1605#endif 2240#endif
1606 2241
1607/* initialise a loop structure, must be zero-initialised */ 2242/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2243static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2244loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2245{
1611 if (!backend) 2246 if (!backend)
1612 { 2247 {
2248 origflags = flags;
2249
1613#if EV_USE_REALTIME 2250#if EV_USE_REALTIME
1614 if (!have_realtime) 2251 if (!have_realtime)
1615 { 2252 {
1616 struct timespec ts; 2253 struct timespec ts;
1617 2254
… …
1639 if (!(flags & EVFLAG_NOENV) 2276 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2277 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2278 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2279 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2280
1644 ev_rt_now = ev_time (); 2281 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2282 mn_now = get_clock ();
1646 now_floor = mn_now; 2283 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2284 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2285#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2286 invoke_cb = ev_invoke_pending;
1650#endif 2287#endif
1651 2288
1652 io_blocktime = 0.; 2289 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2290 timeout_blocktime = 0.;
1654 backend = 0; 2291 backend = 0;
1655 backend_fd = -1; 2292 backend_fd = -1;
1656 sig_pending = 0; 2293 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2294#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2295 async_pending = 0;
1659#endif 2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
1660#if EV_USE_INOTIFY 2299#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2301#endif
1663#if EV_USE_SIGNALFD 2302#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2304#endif
1666 2305
1667 if (!(flags & 0x0000ffffU)) 2306 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2307 flags |= ev_recommended_backends ();
1669 2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
1670#if EV_USE_PORT 2312#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2314#endif
1673#if EV_USE_KQUEUE 2315#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2333#endif
1692 } 2334 }
1693} 2335}
1694 2336
1695/* free up a loop structure */ 2337/* free up a loop structure */
1696static void noinline 2338void ecb_cold
1697loop_destroy (EV_P) 2339ev_loop_destroy (EV_P)
1698{ 2340{
1699 int i; 2341 int i;
2342
2343#if EV_MULTIPLICITY
2344 /* mimic free (0) */
2345 if (!EV_A)
2346 return;
2347#endif
2348
2349#if EV_CLEANUP_ENABLE
2350 /* queue cleanup watchers (and execute them) */
2351 if (expect_false (cleanupcnt))
2352 {
2353 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2354 EV_INVOKE_PENDING;
2355 }
2356#endif
2357
2358#if EV_CHILD_ENABLE
2359 if (ev_is_active (&childev))
2360 {
2361 ev_ref (EV_A); /* child watcher */
2362 ev_signal_stop (EV_A_ &childev);
2363 }
2364#endif
1700 2365
1701 if (ev_is_active (&pipe_w)) 2366 if (ev_is_active (&pipe_w))
1702 { 2367 {
1703 /*ev_ref (EV_A);*/ 2368 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2369 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1726#endif 2391#endif
1727 2392
1728 if (backend_fd >= 0) 2393 if (backend_fd >= 0)
1729 close (backend_fd); 2394 close (backend_fd);
1730 2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
1731#if EV_USE_PORT 2399#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2401#endif
1734#if EV_USE_KQUEUE 2402#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2430 array_free (periodic, EMPTY);
1763#endif 2431#endif
1764#if EV_FORK_ENABLE 2432#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2433 array_free (fork, EMPTY);
1766#endif 2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
1767 array_free (prepare, EMPTY); 2438 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2439 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2440#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2441 array_free (async, EMPTY);
1771#endif 2442#endif
1772 2443
1773 backend = 0; 2444 backend = 0;
2445
2446#if EV_MULTIPLICITY
2447 if (ev_is_default_loop (EV_A))
2448#endif
2449 ev_default_loop_ptr = 0;
2450#if EV_MULTIPLICITY
2451 else
2452 ev_free (EV_A);
2453#endif
1774} 2454}
1775 2455
1776#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2457inline_size void infy_fork (EV_P);
1778#endif 2458#endif
… …
1793 infy_fork (EV_A); 2473 infy_fork (EV_A);
1794#endif 2474#endif
1795 2475
1796 if (ev_is_active (&pipe_w)) 2476 if (ev_is_active (&pipe_w))
1797 { 2477 {
1798 /* this "locks" the handlers against writing to the pipe */ 2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2479
1805 ev_ref (EV_A); 2480 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2481 ev_io_stop (EV_A_ &pipe_w);
1807 2482
1808#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
… …
1826 postfork = 0; 2501 postfork = 0;
1827} 2502}
1828 2503
1829#if EV_MULTIPLICITY 2504#if EV_MULTIPLICITY
1830 2505
1831struct ev_loop * 2506struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2507ev_loop_new (unsigned int flags) EV_THROW
1833{ 2508{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2510
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2511 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2512 loop_init (EV_A_ flags);
1838 2513
1839 if (ev_backend (EV_A)) 2514 if (ev_backend (EV_A))
1840 return EV_A; 2515 return EV_A;
1841 2516
2517 ev_free (EV_A);
1842 return 0; 2518 return 0;
1843} 2519}
1844 2520
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2521#endif /* multiplicity */
1858 2522
1859#if EV_VERIFY 2523#if EV_VERIFY
1860static void noinline 2524static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2525verify_watcher (EV_P_ W w)
1862{ 2526{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2527 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2528
1865 if (w->pending) 2529 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2530 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2531}
1868 2532
1869static void noinline 2533static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2534verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2535{
1872 int i; 2536 int i;
1873 2537
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2538 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2543
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2545 }
1882} 2546}
1883 2547
1884static void noinline 2548static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2549array_verify (EV_P_ W *ws, int cnt)
1886{ 2550{
1887 while (cnt--) 2551 while (cnt--)
1888 { 2552 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2555 }
1892} 2556}
1893#endif 2557#endif
1894 2558
1895#if EV_FEATURE_API 2559#if EV_FEATURE_API
1896void 2560void ecb_cold
1897ev_verify (EV_P) 2561ev_verify (EV_P) EV_THROW
1898{ 2562{
1899#if EV_VERIFY 2563#if EV_VERIFY
1900 int i; 2564 int i;
1901 WL w; 2565 WL w, w2;
1902 2566
1903 assert (activecnt >= -1); 2567 assert (activecnt >= -1);
1904 2568
1905 assert (fdchangemax >= fdchangecnt); 2569 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2570 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2572
1909 assert (anfdmax >= 0); 2573 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
1911 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2579 {
1913 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (j++ & 1)
2583 {
2584 assert (("libev: io watcher list contains a loop", w != w2));
2585 w2 = w2->next;
2586 }
2587
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2588 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2589 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2590 }
2591 }
1917 2592
1918 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2594 verify_heap (EV_A_ timers, timercnt);
1920 2595
1921#if EV_PERIODIC_ENABLE 2596#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2611#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2612 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2613 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2614#endif
1940 2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
1941#if EV_ASYNC_ENABLE 2621#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2622 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2624#endif
1945 2625
… …
1962#endif 2642#endif
1963} 2643}
1964#endif 2644#endif
1965 2645
1966#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1967struct ev_loop * 2647struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2648#else
1970int 2649int
2650#endif
1971ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2652{
1974 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1975 { 2654 {
1976#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2675
1997 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1998} 2677}
1999 2678
2000void 2679void
2001ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
2002{ 2681{
2003#if EV_MULTIPLICITY
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
2025} 2683}
2026 2684
2027/*****************************************************************************/ 2685/*****************************************************************************/
2028 2686
2029void 2687void
… …
2031{ 2689{
2032 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
2033} 2691}
2034 2692
2035unsigned int 2693unsigned int
2036ev_pending_count (EV_P) 2694ev_pending_count (EV_P) EV_THROW
2037{ 2695{
2038 int pri; 2696 int pri;
2039 unsigned int count = 0; 2697 unsigned int count = 0;
2040 2698
2041 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
… …
2045} 2703}
2046 2704
2047void noinline 2705void noinline
2048ev_invoke_pending (EV_P) 2706ev_invoke_pending (EV_P)
2049{ 2707{
2050 int pri; 2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2051
2052 for (pri = NUMPRI; pri--; )
2053 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
2054 { 2710 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059 2712
2060 p->w->pending = 0; 2713 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2063 } 2716 }
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 2778 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 2779 }
2127} 2780}
2128 2781
2129#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
2130/* make periodics pending */ 2808/* make periodics pending */
2131inline_size void 2809inline_size void
2132periodics_reify (EV_P) 2810periodics_reify (EV_P)
2133{ 2811{
2134 EV_FREQUENT_CHECK; 2812 EV_FREQUENT_CHECK;
… …
2153 ANHE_at_cache (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2155 } 2833 }
2156 else if (w->interval) 2834 else if (w->interval)
2157 { 2835 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2836 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
2174 } 2839 }
2175 else 2840 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 2849 }
2185} 2850}
2186 2851
2187/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 2854static void noinline ecb_cold
2190periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
2191{ 2856{
2192 int i; 2857 int i;
2193 2858
2194 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 2863
2199 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 2866 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
2203 2868
2204 ANHE_at_cache (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
2205 } 2870 }
2206 2871
2207 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
2208} 2873}
2209#endif 2874#endif
2210 2875
2211/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
2212static void noinline 2877static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 2879{
2215 int i; 2880 int i;
2216 2881
2217 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
2256 */ 2921 */
2257 for (i = 4; --i; ) 2922 for (i = 4; --i; )
2258 { 2923 {
2924 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
2260 2926
2927 diff = odiff - rtmn_diff;
2928
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 2930 return; /* all is well */
2263 2931
2264 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 2933 mn_now = get_clock ();
2266 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2288 2956
2289 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2290 } 2958 }
2291} 2959}
2292 2960
2293void 2961int
2294ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2295{ 2963{
2296#if EV_FEATURE_API 2964#if EV_FEATURE_API
2297 ++loop_depth; 2965 ++loop_depth;
2298#endif 2966#endif
2299 2967
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 2969
2302 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
2303 2971
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 2973
2306 do 2974 do
2307 { 2975 {
… …
2350 /* calculate blocking time */ 3018 /* calculate blocking time */
2351 { 3019 {
2352 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
2354 3022
3023 /* remember old timestamp for io_blocktime calculation */
3024 ev_tstamp prev_mn_now = mn_now;
3025
3026 /* update time to cancel out callback processing overhead */
3027 time_update (EV_A_ 1e100);
3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3035 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2364 3037
2365 if (timercnt) 3038 if (timercnt)
2366 { 3039 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2369 } 3042 }
2370 3043
2371#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3045 if (periodiccnt)
2373 { 3046 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2376 } 3049 }
2377#endif 3050#endif
2378 3051
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
3055
3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
2382 3060
2383 /* extra check because io_blocktime is commonly 0 */ 3061 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3062 if (expect_false (io_blocktime))
2385 { 3063 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3065
2388 if (sleeptime > waittime - backend_fudge) 3066 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3067 sleeptime = waittime - backend_mintime;
2390 3068
2391 if (expect_true (sleeptime > 0.)) 3069 if (expect_true (sleeptime > 0.))
2392 { 3070 {
2393 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3072 waittime -= sleeptime;
… …
2397 } 3075 }
2398 3076
2399#if EV_FEATURE_API 3077#if EV_FEATURE_API
2400 ++loop_count; 3078 ++loop_count;
2401#endif 3079#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
2405 3092
2406 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2408 } 3095 }
2409 3096
… …
2427 EV_INVOKE_PENDING; 3114 EV_INVOKE_PENDING;
2428 } 3115 }
2429 while (expect_true ( 3116 while (expect_true (
2430 activecnt 3117 activecnt
2431 && !loop_done 3118 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3120 ));
2434 3121
2435 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
2437 3124
2438#if EV_FEATURE_API 3125#if EV_FEATURE_API
2439 --loop_depth; 3126 --loop_depth;
2440#endif 3127#endif
3128
3129 return activecnt;
2441} 3130}
2442 3131
2443void 3132void
2444ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2445{ 3134{
2446 loop_done = how; 3135 loop_done = how;
2447} 3136}
2448 3137
2449void 3138void
2450ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2451{ 3140{
2452 ++activecnt; 3141 ++activecnt;
2453} 3142}
2454 3143
2455void 3144void
2456ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2457{ 3146{
2458 --activecnt; 3147 --activecnt;
2459} 3148}
2460 3149
2461void 3150void
2462ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2463{ 3152{
2464 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2465} 3154}
2466 3155
2467void 3156void
2468ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2469{ 3158{
2470 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2471} 3160}
2472 3161
2473void 3162void
2474ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2475{ 3164{
2476 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2477 3166
2478 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3207 w->pending = 0;
2519 } 3208 }
2520} 3209}
2521 3210
2522int 3211int
2523ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3213{
2525 W w_ = (W)w; 3214 W w_ = (W)w;
2526 int pending = w_->pending; 3215 int pending = w_->pending;
2527 3216
2528 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2561} 3250}
2562 3251
2563/*****************************************************************************/ 3252/*****************************************************************************/
2564 3253
2565void noinline 3254void noinline
2566ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3256{
2568 int fd = w->fd; 3257 int fd = w->fd;
2569 3258
2570 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2571 return; 3260 return;
… …
2577 3266
2578 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2581 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2584 3276
2585 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2586} 3278}
2587 3279
2588void noinline 3280void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3282{
2591 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2593 return; 3285 return;
2594 3286
… …
2597 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2598 3290
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2601 3293
2602 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3295
2604 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2605} 3297}
2606 3298
2607void noinline 3299void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3301{
2610 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2611 return; 3303 return;
2612 3304
2613 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2627 3319
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3321}
2630 3322
2631void noinline 3323void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3325{
2634 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2636 return; 3328 return;
2637 3329
… …
2657 3349
2658 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2659} 3351}
2660 3352
2661void noinline 3353void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3355{
2664 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2665 3359
2666 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2667 { 3361 {
2668 if (w->repeat) 3362 if (w->repeat)
2669 { 3363 {
… …
2682 3376
2683 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2684} 3378}
2685 3379
2686ev_tstamp 3380ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3382{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3384}
2691 3385
2692#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2693void noinline 3387void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3389{
2696 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2697 return; 3391 return;
2698 3392
2699 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3395 else if (w->interval)
2702 { 3396 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3399 }
2707 else 3400 else
2708 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2709 3402
2710 EV_FREQUENT_CHECK; 3403 EV_FREQUENT_CHECK;
… …
2720 3413
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3415}
2723 3416
2724void noinline 3417void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3419{
2727 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2729 return; 3422 return;
2730 3423
… …
2748 3441
2749 EV_FREQUENT_CHECK; 3442 EV_FREQUENT_CHECK;
2750} 3443}
2751 3444
2752void noinline 3445void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3447{
2755 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2758} 3451}
… …
2763#endif 3456#endif
2764 3457
2765#if EV_SIGNAL_ENABLE 3458#if EV_SIGNAL_ENABLE
2766 3459
2767void noinline 3460void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3462{
2770 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2771 return; 3464 return;
2772 3465
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2831 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
2835 3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
2836 sigemptyset (&sa.sa_mask); 3531 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3532 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
2839#endif 3535#endif
2840 } 3536 }
2841 3537
2842 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2843} 3539}
2844 3540
2845void noinline 3541void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3543{
2848 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2850 return; 3546 return;
2851 3547
… …
2882#endif 3578#endif
2883 3579
2884#if EV_CHILD_ENABLE 3580#if EV_CHILD_ENABLE
2885 3581
2886void 3582void
2887ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3584{
2889#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3587#endif
2892 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
… …
2899 3595
2900 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2901} 3597}
2902 3598
2903void 3599void
2904ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3601{
2906 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2908 return; 3604 return;
2909 3605
… …
2984 if (!pend || pend == path) 3680 if (!pend || pend == path)
2985 break; 3681 break;
2986 3682
2987 *pend = 0; 3683 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3685 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3687 }
2992 } 3688 }
2993 3689
2994 if (w->wd >= 0) 3690 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 3758 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 3759 }
3064} 3760}
3065 3761
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 3762inline_size void ecb_cold
3099ev_check_2625 (EV_P) 3763ev_check_2625 (EV_P)
3100{ 3764{
3101 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 3767 */
… …
3108} 3772}
3109 3773
3110inline_size int 3774inline_size int
3111infy_newfd (void) 3775infy_newfd (void)
3112{ 3776{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 3779 if (fd >= 0)
3116 return fd; 3780 return fd;
3117#endif 3781#endif
3118 return inotify_init (); 3782 return inotify_init ();
… …
3193#else 3857#else
3194# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 3859#endif
3196 3860
3197void 3861void
3198ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 3863{
3200 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 3907 }
3244} 3908}
3245 3909
3246void 3910void
3247ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 3912{
3249 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
3250 return; 3914 return;
3251 3915
3252 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
3273 3937
3274 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3275} 3939}
3276 3940
3277void 3941void
3278ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 3943{
3280 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
3282 return; 3946 return;
3283 3947
… …
3299} 3963}
3300#endif 3964#endif
3301 3965
3302#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
3303void 3967void
3304ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 3969{
3306 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3307 return; 3971 return;
3308 3972
3309 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
3322 3986
3323 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3324} 3988}
3325 3989
3326void 3990void
3327ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 3992{
3329 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
3331 return; 3995 return;
3332 3996
… …
3346} 4010}
3347#endif 4011#endif
3348 4012
3349#if EV_PREPARE_ENABLE 4013#if EV_PREPARE_ENABLE
3350void 4014void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4016{
3353 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
3354 return; 4018 return;
3355 4019
3356 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
3361 4025
3362 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
3363} 4027}
3364 4028
3365void 4029void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4031{
3368 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3370 return; 4034 return;
3371 4035
… …
3384} 4048}
3385#endif 4049#endif
3386 4050
3387#if EV_CHECK_ENABLE 4051#if EV_CHECK_ENABLE
3388void 4052void
3389ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4054{
3391 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
3392 return; 4056 return;
3393 4057
3394 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
3399 4063
3400 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3401} 4065}
3402 4066
3403void 4067void
3404ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4069{
3406 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
3408 return; 4072 return;
3409 4073
… …
3422} 4086}
3423#endif 4087#endif
3424 4088
3425#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
3426void noinline 4090void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4092{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3430} 4094}
3431 4095
3432static void 4096static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4098{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4100
3437 if (ev_cb (w)) 4101 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4103 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
3441} 4105}
3442 4106
3443static void 4107static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4109{
… …
3449 EV_P = w->other; 4113 EV_P = w->other;
3450 4114
3451 while (fdchangecnt) 4115 while (fdchangecnt)
3452 { 4116 {
3453 fd_reify (EV_A); 4117 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4119 }
3456 } 4120 }
3457} 4121}
3458 4122
3459static void 4123static void
… …
3465 4129
3466 { 4130 {
3467 EV_P = w->other; 4131 EV_P = w->other;
3468 4132
3469 ev_loop_fork (EV_A); 4133 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4134 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4135 }
3472 4136
3473 ev_embed_start (EV_A_ w); 4137 ev_embed_start (EV_A_ w);
3474} 4138}
3475 4139
… …
3480 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3481} 4145}
3482#endif 4146#endif
3483 4147
3484void 4148void
3485ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4150{
3487 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3488 return; 4152 return;
3489 4153
3490 { 4154 {
… …
3511 4175
3512 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3513} 4177}
3514 4178
3515void 4179void
3516ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4181{
3518 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3520 return; 4184 return;
3521 4185
… …
3531} 4195}
3532#endif 4196#endif
3533 4197
3534#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3535void 4199void
3536ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4201{
3538 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3539 return; 4203 return;
3540 4204
3541 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3546 4210
3547 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3548} 4212}
3549 4213
3550void 4214void
3551ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4216{
3553 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3555 return; 4219 return;
3556 4220
… …
3567 4231
3568 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3569} 4233}
3570#endif 4234#endif
3571 4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
4274}
4275#endif
4276
3572#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3573void 4278void
3574ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4280{
3576 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3577 return; 4282 return;
4283
4284 w->sent = 0;
3578 4285
3579 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
3580 4287
3581 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3582 4289
… …
3586 4293
3587 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3588} 4295}
3589 4296
3590void 4297void
3591ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4299{
3593 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3595 return; 4302 return;
3596 4303
… …
3607 4314
3608 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3609} 4316}
3610 4317
3611void 4318void
3612ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4320{
3614 w->sent = 1; 4321 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4322 evpipe_write (EV_A_ &async_pending);
3616} 4323}
3617#endif 4324#endif
… …
3654 4361
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4363}
3657 4364
3658void 4365void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4367{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4369
3663 if (expect_false (!once)) 4370 if (expect_false (!once))
3664 { 4371 {
… …
3685} 4392}
3686 4393
3687/*****************************************************************************/ 4394/*****************************************************************************/
3688 4395
3689#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3690void 4397void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4399{
3693 int i, j; 4400 int i, j;
3694 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3695 4402
3696 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4447#endif
3741 4448
3742#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4454#endif
3748 4455
3749#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3802 4509
3803#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3805#endif 4512#endif
3806 4513
3807#ifdef __cplusplus
3808}
3809#endif
3810

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