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Comparing libev/ev.c (file contents):
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs.
Revision 1.430 by root, Wed May 9 16:50:23 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
194# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
199#endif 212#endif
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396# endif 413# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 414#endif
402 415
403#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 418# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
412# else 425# else
413# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
414# endif 427# endif
415# endif 428# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 430#endif
424 431
425#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 434# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
434# else 441# else
435# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
436# endif 443# endif
437# endif 444# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 446
443struct signalfd_siginfo 447struct signalfd_siginfo
444{ 448{
445 uint32_t ssi_signo; 449 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
447}; 451};
448# ifdef __cplusplus
449}
450# endif 452#endif
451#endif
452
453 453
454/**/ 454/**/
455 455
456#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 458#else
459# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
460#endif 460#endif
461 461
462/* 462/*
463 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 465 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 468
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 516 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
478#else 523#else
479# define expect(expr,value) (expr) 524 #include <inttypes.h>
480# define noinline
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
482# define inline
483# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 539 #endif
540#endif
485 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
488#define inline_size static inline 957#define inline_size ecb_inline
489 958
490#if EV_FEATURE_CODE 959#if EV_FEATURE_CODE
491# define inline_speed static inline 960# define inline_speed ecb_inline
492#else 961#else
493# define inline_speed static noinline 962# define inline_speed static noinline
494#endif 963#endif
495 964
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1004# include "ev_win32.c"
536#endif 1005#endif
537 1006
538/*****************************************************************************/ 1007/*****************************************************************************/
539 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
540#if EV_AVOID_STDIO 1099#if EV_AVOID_STDIO
541static void noinline 1100static void noinline ecb_cold
542ev_printerr (const char *msg) 1101ev_printerr (const char *msg)
543{ 1102{
544 write (STDERR_FILENO, msg, strlen (msg)); 1103 write (STDERR_FILENO, msg, strlen (msg));
545} 1104}
546#endif 1105#endif
547 1106
548static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
549 1108
550void 1109void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
552{ 1111{
553 syserr_cb = cb; 1112 syserr_cb = cb;
554} 1113}
555 1114
556static void noinline 1115static void noinline ecb_cold
557ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
558{ 1117{
559 if (!msg) 1118 if (!msg)
560 msg = "(libev) system error"; 1119 msg = "(libev) system error";
561 1120
562 if (syserr_cb) 1121 if (syserr_cb)
563 syserr_cb (msg); 1122 syserr_cb (msg);
564 else 1123 else
565 { 1124 {
566#if EV_AVOID_STDIO 1125#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1126 ev_printerr (msg);
570 ev_printerr (": "); 1127 ev_printerr (": ");
571 ev_printerr (err); 1128 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1129 ev_printerr ("\n");
573#else 1130#else
574 perror (msg); 1131 perror (msg);
575#endif 1132#endif
576 abort (); 1133 abort ();
… …
594 free (ptr); 1151 free (ptr);
595 return 0; 1152 return 0;
596#endif 1153#endif
597} 1154}
598 1155
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1157
601void 1158void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
603{ 1160{
604 alloc = cb; 1161 alloc = cb;
605} 1162}
606 1163
607inline_speed void * 1164inline_speed void *
… …
610 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
611 1168
612 if (!ptr && size) 1169 if (!ptr && size)
613 { 1170 {
614#if EV_AVOID_STDIO 1171#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1173#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1175#endif
619 abort (); 1176 abort ();
620 } 1177 }
621 1178
622 return ptr; 1179 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1197 unsigned char unused;
641#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1200#endif
644#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
646#endif 1206#endif
647} ANFD; 1207} ANFD;
648 1208
649/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
650typedef struct 1210typedef struct
… …
692 #undef VAR 1252 #undef VAR
693 }; 1253 };
694 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
695 1255
696 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1258
699#else 1259#else
700 1260
701 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1263 #include "ev_vars.h"
704 #undef VAR 1264 #undef VAR
705 1265
706 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1278#endif
719 1279
720#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
721 1281
722/*****************************************************************************/ 1282/*****************************************************************************/
723 1283
724#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1285ev_tstamp
726ev_time (void) 1286ev_time (void) EV_THROW
727{ 1287{
728#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
730 { 1290 {
731 struct timespec ts; 1291 struct timespec ts;
… …
755 return ev_time (); 1315 return ev_time ();
756} 1316}
757 1317
758#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
759ev_tstamp 1319ev_tstamp
760ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
761{ 1321{
762 return ev_rt_now; 1322 return ev_rt_now;
763} 1323}
764#endif 1324#endif
765 1325
766void 1326void
767ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
768{ 1328{
769 if (delay > 0.) 1329 if (delay > 0.)
770 { 1330 {
771#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
772 struct timespec ts; 1332 struct timespec ts;
773 1333
774 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1336#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
780#else 1338#else
781 struct timeval tv; 1339 struct timeval tv;
782 1340
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
790#endif 1346#endif
791 } 1347 }
792} 1348}
793 1349
… …
804 1360
805 do 1361 do
806 ncur <<= 1; 1362 ncur <<= 1;
807 while (cnt > ncur); 1363 while (cnt > ncur);
808 1364
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1367 {
812 ncur *= elem; 1368 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1372 }
817 1373
818 return ncur; 1374 return ncur;
819} 1375}
820 1376
821static noinline void * 1377static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1379{
824 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
826} 1382}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1386
831#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
833 { \ 1389 { \
834 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1394 }
839 1395
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1414{
859} 1415}
860 1416
861void noinline 1417void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1419{
864 W w_ = (W)w; 1420 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
866 1422
867 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
875 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
876} 1434}
877 1435
878inline_speed void 1436inline_speed void
879feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
880{ 1438{
… …
926 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
928} 1486}
929 1487
930void 1488void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1490{
933 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
935} 1493}
936 1494
… …
939inline_size void 1497inline_size void
940fd_reify (EV_P) 1498fd_reify (EV_P)
941{ 1499{
942 int i; 1500 int i;
943 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
944 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
945 { 1528 {
946 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
948 ev_io *w; 1531 ev_io *w;
949 1532
950 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
951 1535
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1537
955#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1539 {
958 unsigned long arg; 1540 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1543 anfd->events |= (unsigned char)w->events;
1544
1545 if (o_events != anfd->events)
1546 o_reify = EV__IOFDSET; /* actually |= */
961 } 1547 }
962#endif
963 1548
964 { 1549 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1551 }
975 1552
976 fdchangecnt = 0; 1553 fdchangecnt = 0;
977} 1554}
978 1555
… …
990 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
991 } 1568 }
992} 1569}
993 1570
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1572inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
997{ 1574{
998 ev_io *w; 1575 ev_io *w;
999 1576
1000 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1581 }
1005} 1582}
1006 1583
1007/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1585inline_size int ecb_cold
1009fd_valid (int fd) 1586fd_valid (int fd)
1010{ 1587{
1011#ifdef _WIN32 1588#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1590#else
1014 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1015#endif 1592#endif
1016} 1593}
1017 1594
1018/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1019static void noinline 1596static void noinline ecb_cold
1020fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1021{ 1598{
1022 int fd; 1599 int fd;
1023 1600
1024 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1028} 1605}
1029 1606
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1608static void noinline ecb_cold
1032fd_enomem (EV_P) 1609fd_enomem (EV_P)
1033{ 1610{
1034 int fd; 1611 int fd;
1035 1612
1036 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1231 1808
1232/*****************************************************************************/ 1809/*****************************************************************************/
1233 1810
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1812
1236static void noinline 1813static void noinline ecb_cold
1237evpipe_init (EV_P) 1814evpipe_init (EV_P)
1238{ 1815{
1239 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1240 { 1817 {
1241# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1842 }
1266} 1843}
1267 1844
1268inline_size void 1845inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1847{
1271 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1272 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1273 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1868
1278#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1870 if (evfd >= 0)
1280 { 1871 {
1281 uint64_t counter = 1; 1872 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1283 } 1874 }
1284 else 1875 else
1285#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
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
1286 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1287 1888
1288 errno = old_errno; 1889 errno = old_errno;
1289 } 1890 }
1290} 1891}
1291 1892
… …
1294static void 1895static void
1295pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1296{ 1897{
1297 int i; 1898 int i;
1298 1899
1900 if (revents & EV_READ)
1901 {
1299#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1300 if (evfd >= 0) 1903 if (evfd >= 0)
1301 { 1904 {
1302 uint64_t counter; 1905 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1304 } 1907 }
1305 else 1908 else
1306#endif 1909#endif
1307 { 1910 {
1308 char dummy; 1911 char dummy[4];
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
1309 read (evpipe [0], &dummy, 1); 1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1310 } 1922 }
1311 1923
1924 pipe_write_skipped = 0;
1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 1929 if (sig_pending)
1313 { 1930 {
1314 sig_pending = 0; 1931 sig_pending = 0;
1932
1933 ECB_MEMORY_FENCE_RELEASE;
1315 1934
1316 for (i = EV_NSIG - 1; i--; ) 1935 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 1936 if (expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 1937 ev_feed_signal_event (EV_A_ i + 1);
1319 } 1938 }
1939#endif
1320 1940
1321#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1322 if (async_pending) 1942 if (async_pending)
1323 { 1943 {
1324 async_pending = 0; 1944 async_pending = 0;
1945
1946 ECB_MEMORY_FENCE_RELEASE;
1325 1947
1326 for (i = asynccnt; i--; ) 1948 for (i = asynccnt; i--; )
1327 if (asyncs [i]->sent) 1949 if (asyncs [i]->sent)
1328 { 1950 {
1329 asyncs [i]->sent = 0; 1951 asyncs [i]->sent = 0;
… …
1333#endif 1955#endif
1334} 1956}
1335 1957
1336/*****************************************************************************/ 1958/*****************************************************************************/
1337 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
1338static void 1977static void
1339ev_sighandler (int signum) 1978ev_sighandler (int signum)
1340{ 1979{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 1980#ifdef _WIN32
1346 signal (signum, ev_sighandler); 1981 signal (signum, ev_sighandler);
1347#endif 1982#endif
1348 1983
1349 signals [signum - 1].pending = 1; 1984 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 1985}
1352 1986
1353void noinline 1987void noinline
1354ev_feed_signal_event (EV_P_ int signum) 1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1355{ 1989{
1356 WL w; 1990 WL w;
1357 1991
1358 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return; 1993 return;
… …
1455 2089
1456#endif 2090#endif
1457 2091
1458/*****************************************************************************/ 2092/*****************************************************************************/
1459 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
1460#if EV_USE_PORT 2097#if EV_USE_PORT
1461# include "ev_port.c" 2098# include "ev_port.c"
1462#endif 2099#endif
1463#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
… …
1471#endif 2108#endif
1472#if EV_USE_SELECT 2109#if EV_USE_SELECT
1473# include "ev_select.c" 2110# include "ev_select.c"
1474#endif 2111#endif
1475 2112
1476int 2113int ecb_cold
1477ev_version_major (void) 2114ev_version_major (void) EV_THROW
1478{ 2115{
1479 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
1480} 2117}
1481 2118
1482int 2119int ecb_cold
1483ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
1484{ 2121{
1485 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
1486} 2123}
1487 2124
1488/* 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 */
1489int inline_size 2126int inline_size ecb_cold
1490enable_secure (void) 2127enable_secure (void)
1491{ 2128{
1492#ifdef _WIN32 2129#ifdef _WIN32
1493 return 0; 2130 return 0;
1494#else 2131#else
1495 return getuid () != geteuid () 2132 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2133 || getgid () != getegid ();
1497#endif 2134#endif
1498} 2135}
1499 2136
1500unsigned int 2137unsigned int ecb_cold
1501ev_supported_backends (void) 2138ev_supported_backends (void) EV_THROW
1502{ 2139{
1503 unsigned int flags = 0; 2140 unsigned int flags = 0;
1504 2141
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1506 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1510 2147
1511 return flags; 2148 return flags;
1512} 2149}
1513 2150
1514unsigned int 2151unsigned int ecb_cold
1515ev_recommended_backends (void) 2152ev_recommended_backends (void) EV_THROW
1516{ 2153{
1517 unsigned int flags = ev_supported_backends (); 2154 unsigned int flags = ev_supported_backends ();
1518 2155
1519#ifndef __NetBSD__ 2156#ifndef __NetBSD__
1520 /* kqueue is borked on everything but netbsd apparently */ 2157 /* kqueue is borked on everything but netbsd apparently */
… …
1531#endif 2168#endif
1532 2169
1533 return flags; 2170 return flags;
1534} 2171}
1535 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
1536unsigned int 2185unsigned int
1537ev_embeddable_backends (void)
1538{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */
1543 flags &= ~EVBACKEND_EPOLL;
1544
1545 return flags;
1546}
1547
1548unsigned int
1549ev_backend (EV_P) 2186ev_backend (EV_P) EV_THROW
1550{ 2187{
1551 return backend; 2188 return backend;
1552} 2189}
1553 2190
1554#if EV_FEATURE_API 2191#if EV_FEATURE_API
1555unsigned int 2192unsigned int
1556ev_iteration (EV_P) 2193ev_iteration (EV_P) EV_THROW
1557{ 2194{
1558 return loop_count; 2195 return loop_count;
1559} 2196}
1560 2197
1561unsigned int 2198unsigned int
1562ev_depth (EV_P) 2199ev_depth (EV_P) EV_THROW
1563{ 2200{
1564 return loop_depth; 2201 return loop_depth;
1565} 2202}
1566 2203
1567void 2204void
1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1569{ 2206{
1570 io_blocktime = interval; 2207 io_blocktime = interval;
1571} 2208}
1572 2209
1573void 2210void
1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2212{
1576 timeout_blocktime = interval; 2213 timeout_blocktime = interval;
1577} 2214}
1578 2215
1579void 2216void
1580ev_set_userdata (EV_P_ void *data) 2217ev_set_userdata (EV_P_ void *data) EV_THROW
1581{ 2218{
1582 userdata = data; 2219 userdata = data;
1583} 2220}
1584 2221
1585void * 2222void *
1586ev_userdata (EV_P) 2223ev_userdata (EV_P) EV_THROW
1587{ 2224{
1588 return userdata; 2225 return userdata;
1589} 2226}
1590 2227
2228void
1591void 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
1592{ 2230{
1593 invoke_cb = invoke_pending_cb; 2231 invoke_cb = invoke_pending_cb;
1594} 2232}
1595 2233
2234void
1596void 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
1597{ 2236{
1598 release_cb = release; 2237 release_cb = release;
1599 acquire_cb = acquire; 2238 acquire_cb = acquire;
1600} 2239}
1601#endif 2240#endif
1602 2241
1603/* initialise a loop structure, must be zero-initialised */ 2242/* initialise a loop structure, must be zero-initialised */
1604static void noinline 2243static void noinline ecb_cold
1605loop_init (EV_P_ unsigned int flags) 2244loop_init (EV_P_ unsigned int flags) EV_THROW
1606{ 2245{
1607 if (!backend) 2246 if (!backend)
1608 { 2247 {
2248 origflags = flags;
2249
1609#if EV_USE_REALTIME 2250#if EV_USE_REALTIME
1610 if (!have_realtime) 2251 if (!have_realtime)
1611 { 2252 {
1612 struct timespec ts; 2253 struct timespec ts;
1613 2254
… …
1635 if (!(flags & EVFLAG_NOENV) 2276 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 2277 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 2278 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 2279 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 2280
1640 ev_rt_now = ev_time (); 2281 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 2282 mn_now = get_clock ();
1642 now_floor = mn_now; 2283 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 2284 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 2285#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 2286 invoke_cb = ev_invoke_pending;
1646#endif 2287#endif
1647 2288
1648 io_blocktime = 0.; 2289 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 2290 timeout_blocktime = 0.;
1650 backend = 0; 2291 backend = 0;
1651 backend_fd = -1; 2292 backend_fd = -1;
1652 sig_pending = 0; 2293 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 2294#if EV_ASYNC_ENABLE
1654 async_pending = 0; 2295 async_pending = 0;
1655#endif 2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
1656#if EV_USE_INOTIFY 2299#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 2301#endif
1659#if EV_USE_SIGNALFD 2302#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 2304#endif
1662 2305
1663 if (!(flags & 0x0000ffffU)) 2306 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 2307 flags |= ev_recommended_backends ();
1665 2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
1666#if EV_USE_PORT 2312#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 2314#endif
1669#if EV_USE_KQUEUE 2315#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 2333#endif
1688 } 2334 }
1689} 2335}
1690 2336
1691/* free up a loop structure */ 2337/* free up a loop structure */
1692static void noinline 2338void ecb_cold
1693loop_destroy (EV_P) 2339ev_loop_destroy (EV_P)
1694{ 2340{
1695 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
1696 2365
1697 if (ev_is_active (&pipe_w)) 2366 if (ev_is_active (&pipe_w))
1698 { 2367 {
1699 /*ev_ref (EV_A);*/ 2368 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 2369 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1722#endif 2391#endif
1723 2392
1724 if (backend_fd >= 0) 2393 if (backend_fd >= 0)
1725 close (backend_fd); 2394 close (backend_fd);
1726 2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
1727#if EV_USE_PORT 2399#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 2401#endif
1730#if EV_USE_KQUEUE 2402#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 2430 array_free (periodic, EMPTY);
1759#endif 2431#endif
1760#if EV_FORK_ENABLE 2432#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 2433 array_free (fork, EMPTY);
1762#endif 2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
1763 array_free (prepare, EMPTY); 2438 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 2439 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 2440#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 2441 array_free (async, EMPTY);
1767#endif 2442#endif
1768 2443
1769 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
1770} 2454}
1771 2455
1772#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 2457inline_size void infy_fork (EV_P);
1774#endif 2458#endif
… …
1789 infy_fork (EV_A); 2473 infy_fork (EV_A);
1790#endif 2474#endif
1791 2475
1792 if (ev_is_active (&pipe_w)) 2476 if (ev_is_active (&pipe_w))
1793 { 2477 {
1794 /* this "locks" the handlers against writing to the pipe */ 2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1795 /* while we modify the fd vars */
1796 sig_pending = 1;
1797#if EV_ASYNC_ENABLE
1798 async_pending = 1;
1799#endif
1800 2479
1801 ev_ref (EV_A); 2480 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 2481 ev_io_stop (EV_A_ &pipe_w);
1803 2482
1804#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
… …
1822 postfork = 0; 2501 postfork = 0;
1823} 2502}
1824 2503
1825#if EV_MULTIPLICITY 2504#if EV_MULTIPLICITY
1826 2505
1827struct ev_loop * 2506struct ev_loop * ecb_cold
1828ev_loop_new (unsigned int flags) 2507ev_loop_new (unsigned int flags) EV_THROW
1829{ 2508{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 2510
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 2511 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 2512 loop_init (EV_A_ flags);
1834 2513
1835 if (ev_backend (EV_A)) 2514 if (ev_backend (EV_A))
1836 return EV_A; 2515 return EV_A;
1837 2516
2517 ev_free (EV_A);
1838 return 0; 2518 return 0;
1839} 2519}
1840 2520
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 2521#endif /* multiplicity */
1854 2522
1855#if EV_VERIFY 2523#if EV_VERIFY
1856static void noinline 2524static void noinline ecb_cold
1857verify_watcher (EV_P_ W w) 2525verify_watcher (EV_P_ W w)
1858{ 2526{
1859 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));
1860 2528
1861 if (w->pending) 2529 if (w->pending)
1862 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));
1863} 2531}
1864 2532
1865static void noinline 2533static void noinline ecb_cold
1866verify_heap (EV_P_ ANHE *heap, int N) 2534verify_heap (EV_P_ ANHE *heap, int N)
1867{ 2535{
1868 int i; 2536 int i;
1869 2537
1870 for (i = HEAP0; i < N + HEAP0; ++i) 2538 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 2543
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 2545 }
1878} 2546}
1879 2547
1880static void noinline 2548static void noinline ecb_cold
1881array_verify (EV_P_ W *ws, int cnt) 2549array_verify (EV_P_ W *ws, int cnt)
1882{ 2550{
1883 while (cnt--) 2551 while (cnt--)
1884 { 2552 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 2555 }
1888} 2556}
1889#endif 2557#endif
1890 2558
1891#if EV_FEATURE_API 2559#if EV_FEATURE_API
1892void 2560void ecb_cold
1893ev_verify (EV_P) 2561ev_verify (EV_P) EV_THROW
1894{ 2562{
1895#if EV_VERIFY 2563#if EV_VERIFY
1896 int i; 2564 int i;
1897 WL w; 2565 WL w, w2;
1898 2566
1899 assert (activecnt >= -1); 2567 assert (activecnt >= -1);
1900 2568
1901 assert (fdchangemax >= fdchangecnt); 2569 assert (fdchangemax >= fdchangecnt);
1902 for (i = 0; i < fdchangecnt; ++i) 2570 for (i = 0; i < fdchangecnt; ++i)
1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1904 2572
1905 assert (anfdmax >= 0); 2573 assert (anfdmax >= 0);
1906 for (i = 0; i < anfdmax; ++i) 2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
1907 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1908 { 2579 {
1909 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
1910 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));
1911 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));
1912 } 2590 }
2591 }
1913 2592
1914 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
1915 verify_heap (EV_A_ timers, timercnt); 2594 verify_heap (EV_A_ timers, timercnt);
1916 2595
1917#if EV_PERIODIC_ENABLE 2596#if EV_PERIODIC_ENABLE
… …
1932#if EV_FORK_ENABLE 2611#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2612 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2613 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2614#endif
1936 2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
1937#if EV_ASYNC_ENABLE 2621#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2622 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2624#endif
1941 2625
… …
1958#endif 2642#endif
1959} 2643}
1960#endif 2644#endif
1961 2645
1962#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1963struct ev_loop * 2647struct ev_loop * ecb_cold
1964ev_default_loop_init (unsigned int flags)
1965#else 2648#else
1966int 2649int
2650#endif
1967ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1968#endif
1969{ 2652{
1970 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1971 { 2654 {
1972#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2675
1993 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1994} 2677}
1995 2678
1996void 2679void
1997ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
1998{ 2681{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
2021} 2683}
2022 2684
2023/*****************************************************************************/ 2685/*****************************************************************************/
2024 2686
2025void 2687void
… …
2027{ 2689{
2028 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
2029} 2691}
2030 2692
2031unsigned int 2693unsigned int
2032ev_pending_count (EV_P) 2694ev_pending_count (EV_P) EV_THROW
2033{ 2695{
2034 int pri; 2696 int pri;
2035 unsigned int count = 0; 2697 unsigned int count = 0;
2036 2698
2037 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
… …
2041} 2703}
2042 2704
2043void noinline 2705void noinline
2044ev_invoke_pending (EV_P) 2706ev_invoke_pending (EV_P)
2045{ 2707{
2046 int pri; 2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2047
2048 for (pri = NUMPRI; pri--; )
2049 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
2050 { 2710 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2052
2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
2055 2712
2056 p->w->pending = 0; 2713 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2059 } 2716 }
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 2778 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 2779 }
2123} 2780}
2124 2781
2125#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
2126/* make periodics pending */ 2808/* make periodics pending */
2127inline_size void 2809inline_size void
2128periodics_reify (EV_P) 2810periodics_reify (EV_P)
2129{ 2811{
2130 EV_FREQUENT_CHECK; 2812 EV_FREQUENT_CHECK;
… …
2149 ANHE_at_cache (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2151 } 2833 }
2152 else if (w->interval) 2834 else if (w->interval)
2153 { 2835 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2836 periodic_recalc (EV_A_ w);
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
2170 } 2839 }
2171 else 2840 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2180 } 2849 }
2181} 2850}
2182 2851
2183/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
2184/* 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? */
2185static void noinline 2854static void noinline ecb_cold
2186periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
2187{ 2856{
2188 int i; 2857 int i;
2189 2858
2190 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 2863
2195 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 2866 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
2199 2868
2200 ANHE_at_cache (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
2201 } 2870 }
2202 2871
2203 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
2204} 2873}
2205#endif 2874#endif
2206 2875
2207/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
2208static void noinline 2877static void noinline ecb_cold
2209timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 2879{
2211 int i; 2880 int i;
2212 2881
2213 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
2250 * 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
2251 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
2252 */ 2921 */
2253 for (i = 4; --i; ) 2922 for (i = 4; --i; )
2254 { 2923 {
2924 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
2256 2926
2927 diff = odiff - rtmn_diff;
2928
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258 return; /* all is well */ 2930 return; /* all is well */
2259 2931
2260 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 2933 mn_now = get_clock ();
2262 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2284 2956
2285 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2286 } 2958 }
2287} 2959}
2288 2960
2289void 2961int
2290ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2291{ 2963{
2292#if EV_FEATURE_API 2964#if EV_FEATURE_API
2293 ++loop_depth; 2965 ++loop_depth;
2294#endif 2966#endif
2295 2967
2296 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));
2297 2969
2298 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
2299 2971
2300 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 */
2301 2973
2302 do 2974 do
2303 { 2975 {
… …
2346 /* calculate blocking time */ 3018 /* calculate blocking time */
2347 { 3019 {
2348 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
2350 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
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 3035 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2360 3037
2361 if (timercnt) 3038 if (timercnt)
2362 { 3039 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2365 } 3042 }
2366 3043
2367#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 3045 if (periodiccnt)
2369 { 3046 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2372 } 3049 }
2373#endif 3050#endif
2374 3051
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2377 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;
2378 3060
2379 /* extra check because io_blocktime is commonly 0 */ 3061 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3062 if (expect_false (io_blocktime))
2381 { 3063 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3065
2384 if (sleeptime > waittime - backend_fudge) 3066 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3067 sleeptime = waittime - backend_mintime;
2386 3068
2387 if (expect_true (sleeptime > 0.)) 3069 if (expect_true (sleeptime > 0.))
2388 { 3070 {
2389 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3072 waittime -= sleeptime;
… …
2393 } 3075 }
2394 3076
2395#if EV_FEATURE_API 3077#if EV_FEATURE_API
2396 ++loop_count; 3078 ++loop_count;
2397#endif 3079#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
2400 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
2401 3092
2402 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2404 } 3095 }
2405 3096
… …
2423 EV_INVOKE_PENDING; 3114 EV_INVOKE_PENDING;
2424 } 3115 }
2425 while (expect_true ( 3116 while (expect_true (
2426 activecnt 3117 activecnt
2427 && !loop_done 3118 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 3120 ));
2430 3121
2431 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
2433 3124
2434#if EV_FEATURE_API 3125#if EV_FEATURE_API
2435 --loop_depth; 3126 --loop_depth;
2436#endif 3127#endif
3128
3129 return activecnt;
2437} 3130}
2438 3131
2439void 3132void
2440ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2441{ 3134{
2442 loop_done = how; 3135 loop_done = how;
2443} 3136}
2444 3137
2445void 3138void
2446ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2447{ 3140{
2448 ++activecnt; 3141 ++activecnt;
2449} 3142}
2450 3143
2451void 3144void
2452ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2453{ 3146{
2454 --activecnt; 3147 --activecnt;
2455} 3148}
2456 3149
2457void 3150void
2458ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2459{ 3152{
2460 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2461} 3154}
2462 3155
2463void 3156void
2464ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2465{ 3158{
2466 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2467} 3160}
2468 3161
2469void 3162void
2470ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2471{ 3164{
2472 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2473 3166
2474 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2514 w->pending = 0; 3207 w->pending = 0;
2515 } 3208 }
2516} 3209}
2517 3210
2518int 3211int
2519ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2520{ 3213{
2521 W w_ = (W)w; 3214 W w_ = (W)w;
2522 int pending = w_->pending; 3215 int pending = w_->pending;
2523 3216
2524 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2557} 3250}
2558 3251
2559/*****************************************************************************/ 3252/*****************************************************************************/
2560 3253
2561void noinline 3254void noinline
2562ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2563{ 3256{
2564 int fd = w->fd; 3257 int fd = w->fd;
2565 3258
2566 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2567 return; 3260 return;
… …
2573 3266
2574 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2576 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2577 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2578 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);
2579 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2580 3276
2581 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2582} 3278}
2583 3279
2584void noinline 3280void noinline
2585ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2586{ 3282{
2587 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2588 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2589 return; 3285 return;
2590 3286
… …
2593 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2594 3290
2595 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2597 3293
2598 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 3295
2600 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2601} 3297}
2602 3298
2603void noinline 3299void noinline
2604ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2605{ 3301{
2606 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2607 return; 3303 return;
2608 3304
2609 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2623 3319
2624 /*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));*/
2625} 3321}
2626 3322
2627void noinline 3323void noinline
2628ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2629{ 3325{
2630 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2631 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2632 return; 3328 return;
2633 3329
… …
2653 3349
2654 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2655} 3351}
2656 3352
2657void noinline 3353void noinline
2658ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2659{ 3355{
2660 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2661 3359
2662 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2663 { 3361 {
2664 if (w->repeat) 3362 if (w->repeat)
2665 { 3363 {
… …
2678 3376
2679 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2680} 3378}
2681 3379
2682ev_tstamp 3380ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w) 3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2684{ 3382{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2686} 3384}
2687 3385
2688#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2689void noinline 3387void noinline
2690ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2691{ 3389{
2692 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2693 return; 3391 return;
2694 3392
2695 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 3395 else if (w->interval)
2698 { 3396 {
2699 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.));
2700 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 3399 }
2703 else 3400 else
2704 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2705 3402
2706 EV_FREQUENT_CHECK; 3403 EV_FREQUENT_CHECK;
… …
2716 3413
2717 /*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));*/
2718} 3415}
2719 3416
2720void noinline 3417void noinline
2721ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2722{ 3419{
2723 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2725 return; 3422 return;
2726 3423
… …
2744 3441
2745 EV_FREQUENT_CHECK; 3442 EV_FREQUENT_CHECK;
2746} 3443}
2747 3444
2748void noinline 3445void noinline
2749ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2750{ 3447{
2751 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2752 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2753 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2754} 3451}
… …
2759#endif 3456#endif
2760 3457
2761#if EV_SIGNAL_ENABLE 3458#if EV_SIGNAL_ENABLE
2762 3459
2763void noinline 3460void noinline
2764ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2765{ 3462{
2766 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2767 return; 3464 return;
2768 3465
2769 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));
… …
2827 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2829 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 */
2830 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
2831 3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
2832 sigemptyset (&sa.sa_mask); 3531 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 3532 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
2835#endif 3535#endif
2836 } 3536 }
2837 3537
2838 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2839} 3539}
2840 3540
2841void noinline 3541void noinline
2842ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2843{ 3543{
2844 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2845 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2846 return; 3546 return;
2847 3547
… …
2878#endif 3578#endif
2879 3579
2880#if EV_CHILD_ENABLE 3580#if EV_CHILD_ENABLE
2881 3581
2882void 3582void
2883ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2884{ 3584{
2885#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2886 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));
2887#endif 3587#endif
2888 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
… …
2895 3595
2896 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2897} 3597}
2898 3598
2899void 3599void
2900ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2901{ 3601{
2902 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2903 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2904 return; 3604 return;
2905 3605
… …
2980 if (!pend || pend == path) 3680 if (!pend || pend == path)
2981 break; 3681 break;
2982 3682
2983 *pend = 0; 3683 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 3685 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 3687 }
2988 } 3688 }
2989 3689
2990 if (w->wd >= 0) 3690 if (w->wd >= 0)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3758 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3759 }
3060} 3760}
3061 3761
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void 3762inline_size void ecb_cold
3095ev_check_2625 (EV_P) 3763ev_check_2625 (EV_P)
3096{ 3764{
3097 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
3098 * 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
3099 */ 3767 */
… …
3104} 3772}
3105 3773
3106inline_size int 3774inline_size int
3107infy_newfd (void) 3775infy_newfd (void)
3108{ 3776{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0) 3779 if (fd >= 0)
3112 return fd; 3780 return fd;
3113#endif 3781#endif
3114 return inotify_init (); 3782 return inotify_init ();
… …
3189#else 3857#else
3190# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
3191#endif 3859#endif
3192 3860
3193void 3861void
3194ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3195{ 3863{
3196 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
3197 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
3198 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
3199 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
3238 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
3239 } 3907 }
3240} 3908}
3241 3909
3242void 3910void
3243ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3244{ 3912{
3245 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
3246 return; 3914 return;
3247 3915
3248 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
3269 3937
3270 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3271} 3939}
3272 3940
3273void 3941void
3274ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3275{ 3943{
3276 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
3277 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
3278 return; 3946 return;
3279 3947
… …
3295} 3963}
3296#endif 3964#endif
3297 3965
3298#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
3299void 3967void
3300ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3301{ 3969{
3302 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3303 return; 3971 return;
3304 3972
3305 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
3318 3986
3319 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3320} 3988}
3321 3989
3322void 3990void
3323ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3324{ 3992{
3325 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
3327 return; 3995 return;
3328 3996
… …
3342} 4010}
3343#endif 4011#endif
3344 4012
3345#if EV_PREPARE_ENABLE 4013#if EV_PREPARE_ENABLE
3346void 4014void
3347ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3348{ 4016{
3349 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
3350 return; 4018 return;
3351 4019
3352 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
3357 4025
3358 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
3359} 4027}
3360 4028
3361void 4029void
3362ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3363{ 4031{
3364 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3366 return; 4034 return;
3367 4035
… …
3380} 4048}
3381#endif 4049#endif
3382 4050
3383#if EV_CHECK_ENABLE 4051#if EV_CHECK_ENABLE
3384void 4052void
3385ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
3386{ 4054{
3387 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
3388 return; 4056 return;
3389 4057
3390 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
3395 4063
3396 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3397} 4065}
3398 4066
3399void 4067void
3400ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
3401{ 4069{
3402 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
3403 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
3404 return; 4072 return;
3405 4073
… …
3418} 4086}
3419#endif 4087#endif
3420 4088
3421#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
3422void noinline 4090void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3424{ 4092{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3426} 4094}
3427 4095
3428static void 4096static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 4098{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 4100
3433 if (ev_cb (w)) 4101 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 4103 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
3437} 4105}
3438 4106
3439static void 4107static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 4109{
… …
3445 EV_P = w->other; 4113 EV_P = w->other;
3446 4114
3447 while (fdchangecnt) 4115 while (fdchangecnt)
3448 { 4116 {
3449 fd_reify (EV_A); 4117 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 4119 }
3452 } 4120 }
3453} 4121}
3454 4122
3455static void 4123static void
… …
3461 4129
3462 { 4130 {
3463 EV_P = w->other; 4131 EV_P = w->other;
3464 4132
3465 ev_loop_fork (EV_A); 4133 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4134 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 4135 }
3468 4136
3469 ev_embed_start (EV_A_ w); 4137 ev_embed_start (EV_A_ w);
3470} 4138}
3471 4139
… …
3476 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3477} 4145}
3478#endif 4146#endif
3479 4147
3480void 4148void
3481ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3482{ 4150{
3483 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3484 return; 4152 return;
3485 4153
3486 { 4154 {
… …
3507 4175
3508 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3509} 4177}
3510 4178
3511void 4179void
3512ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3513{ 4181{
3514 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3515 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3516 return; 4184 return;
3517 4185
… …
3527} 4195}
3528#endif 4196#endif
3529 4197
3530#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3531void 4199void
3532ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3533{ 4201{
3534 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3535 return; 4203 return;
3536 4204
3537 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3542 4210
3543 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3544} 4212}
3545 4213
3546void 4214void
3547ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3548{ 4216{
3549 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3550 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3551 return; 4219 return;
3552 4220
… …
3563 4231
3564 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3565} 4233}
3566#endif 4234#endif
3567 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
3568#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3569void 4278void
3570ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3571{ 4280{
3572 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3573 return; 4282 return;
4283
4284 w->sent = 0;
3574 4285
3575 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
3576 4287
3577 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3578 4289
… …
3582 4293
3583 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3584} 4295}
3585 4296
3586void 4297void
3587ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3588{ 4299{
3589 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3590 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3591 return; 4302 return;
3592 4303
… …
3603 4314
3604 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3605} 4316}
3606 4317
3607void 4318void
3608ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3609{ 4320{
3610 w->sent = 1; 4321 w->sent = 1;
3611 evpipe_write (EV_A_ &async_pending); 4322 evpipe_write (EV_A_ &async_pending);
3612} 4323}
3613#endif 4324#endif
… …
3650 4361
3651 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));
3652} 4363}
3653 4364
3654void 4365void
3655ev_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
3656{ 4367{
3657 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));
3658 4369
3659 if (expect_false (!once)) 4370 if (expect_false (!once))
3660 { 4371 {
… …
3681} 4392}
3682 4393
3683/*****************************************************************************/ 4394/*****************************************************************************/
3684 4395
3685#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3686void 4397void ecb_cold
3687ev_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
3688{ 4399{
3689 int i, j; 4400 int i, j;
3690 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3691 4402
3692 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 4447#endif
3737 4448
3738#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 4454#endif
3744 4455
3745#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3798 4509
3799#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3801#endif 4512#endif
3802 4513
3803#ifdef __cplusplus
3804}
3805#endif
3806

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