ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.372 by root, Wed Feb 16 08:02:50 2011 UTC vs.
Revision 1.433 by root, Tue May 15 13:03:20 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 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
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* 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 */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
234# define EV_NSIG 65 249# define EV_NSIG 65
235#endif 250#endif
236 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
237#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 259# else
241# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
242# endif 261# endif
243#endif 262#endif
244 263
245#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 267# else
249# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
250# endif 269# endif
251#endif 270#endif
… …
341#endif 360#endif
342 361
343/* 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, */
344/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 365# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
351# else 370# else
… …
377# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
378#endif 397#endif
379 398
380#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 402# include <sys/select.h>
384# endif 403# endif
385#endif 404#endif
386 405
387#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
… …
390/* 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 */
391# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
394# endif 413# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 414#endif
400 415
401#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
402/* 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 */
403# include <stdint.h> 418# include <stdint.h>
… …
443#else 458#else
444# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
445#endif 460#endif
446 461
447/* 462/*
448 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 465 */
455#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 */
456 468
457#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) */
458#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) */
459 471
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 474
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;
463#if __GNUC__ >= 4 516 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
465# 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
466#else 523#else
467# define expect(expr,value) (expr) 524 #include <inttypes.h>
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# 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)))
472#endif 539 #endif
540#endif
473 541
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. */
474#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#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
476#define inline_size static inline 957#define inline_size ecb_inline
477 958
478#if EV_FEATURE_CODE 959#if EV_FEATURE_CODE
479# define inline_speed static inline 960# define inline_speed ecb_inline
480#else 961#else
481# define inline_speed static noinline 962# define inline_speed static noinline
482#endif 963#endif
483 964
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1004# include "ev_win32.c"
524#endif 1005#endif
525 1006
526/*****************************************************************************/ 1007/*****************************************************************************/
527 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
528#ifdef __linux 1057#ifdef __linux
529# include <sys/utsname.h> 1058# include <sys/utsname.h>
530#endif 1059#endif
531 1060
532static unsigned int noinline 1061static unsigned int noinline ecb_cold
533ev_linux_version (void) 1062ev_linux_version (void)
534{ 1063{
535#ifdef __linux 1064#ifdef __linux
536 unsigned int v = 0; 1065 unsigned int v = 0;
537 struct utsname buf; 1066 struct utsname buf;
… …
566} 1095}
567 1096
568/*****************************************************************************/ 1097/*****************************************************************************/
569 1098
570#if EV_AVOID_STDIO 1099#if EV_AVOID_STDIO
571static void noinline 1100static void noinline ecb_cold
572ev_printerr (const char *msg) 1101ev_printerr (const char *msg)
573{ 1102{
574 write (STDERR_FILENO, msg, strlen (msg)); 1103 write (STDERR_FILENO, msg, strlen (msg));
575} 1104}
576#endif 1105#endif
577 1106
578static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
579 1108
580void 1109void ecb_cold
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
582{ 1111{
583 syserr_cb = cb; 1112 syserr_cb = cb;
584} 1113}
585 1114
586static void noinline 1115static void noinline ecb_cold
587ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
588{ 1117{
589 if (!msg) 1118 if (!msg)
590 msg = "(libev) system error"; 1119 msg = "(libev) system error";
591 1120
… …
622 free (ptr); 1151 free (ptr);
623 return 0; 1152 return 0;
624#endif 1153#endif
625} 1154}
626 1155
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1157
629void 1158void ecb_cold
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
631{ 1160{
632 alloc = cb; 1161 alloc = cb;
633} 1162}
634 1163
635inline_speed void * 1164inline_speed void *
… …
723 #undef VAR 1252 #undef VAR
724 }; 1253 };
725 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
726 1255
727 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
728 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 */
729 1258
730#else 1259#else
731 1260
732 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 */
733 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1263 #include "ev_vars.h"
735 #undef VAR 1264 #undef VAR
736 1265
737 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
… …
752 1281
753/*****************************************************************************/ 1282/*****************************************************************************/
754 1283
755#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1285ev_tstamp
757ev_time (void) 1286ev_time (void) EV_THROW
758{ 1287{
759#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
761 { 1290 {
762 struct timespec ts; 1291 struct timespec ts;
… …
786 return ev_time (); 1315 return ev_time ();
787} 1316}
788 1317
789#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
790ev_tstamp 1319ev_tstamp
791ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
792{ 1321{
793 return ev_rt_now; 1322 return ev_rt_now;
794} 1323}
795#endif 1324#endif
796 1325
797void 1326void
798ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
799{ 1328{
800 if (delay > 0.) 1329 if (delay > 0.)
801 { 1330 {
802#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
803 struct timespec ts; 1332 struct timespec ts;
804 1333
805 EV_TS_SET (ts, delay); 1334 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1336#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
809#else 1338#else
810 struct timeval tv; 1339 struct timeval tv;
811 1340
812 /* 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 */
… …
816 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
817#endif 1346#endif
818 } 1347 }
819} 1348}
820 1349
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1350/*****************************************************************************/
830 1351
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1353
833/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
… …
839 1360
840 do 1361 do
841 ncur <<= 1; 1362 ncur <<= 1;
842 while (cnt > ncur); 1363 while (cnt > ncur);
843 1364
844 /* 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 */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1367 {
847 ncur *= elem; 1368 ncur *= elem;
848 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);
849 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1372 }
852 1373
853 return ncur; 1374 return ncur;
854} 1375}
855 1376
856static noinline void * 1377static void * noinline ecb_cold
857array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1379{
859 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
861} 1382}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1386
866#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
868 { \ 1389 { \
869 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1394 }
874 1395
… …
892pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1414{
894} 1415}
895 1416
896void noinline 1417void noinline
897ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1419{
899 W w_ = (W)w; 1420 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
901 1422
902 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
910 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
911} 1434}
912 1435
913inline_speed void 1436inline_speed void
914feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
915{ 1438{
… …
961 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
963} 1486}
964 1487
965void 1488void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1490{
968 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
970} 1493}
971 1494
… …
980 for (i = 0; i < fdchangecnt; ++i) 1503 for (i = 0; i < fdchangecnt; ++i)
981 { 1504 {
982 int fd = fdchanges [i]; 1505 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 1506 ANFD *anfd = anfds + fd;
984 1507
985 if (anfd->reify & EV__IOFDSET) 1508 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 1509 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 1511
989 if (handle != anfd->handle) 1512 if (handle != anfd->handle)
990 { 1513 {
… …
1044 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
1045 } 1568 }
1046} 1569}
1047 1570
1048/* 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 */
1049inline_speed void 1572inline_speed void ecb_cold
1050fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
1051{ 1574{
1052 ev_io *w; 1575 ev_io *w;
1053 1576
1054 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
1057 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);
1058 } 1581 }
1059} 1582}
1060 1583
1061/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 1585inline_size int ecb_cold
1063fd_valid (int fd) 1586fd_valid (int fd)
1064{ 1587{
1065#ifdef _WIN32 1588#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 1590#else
1068 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1069#endif 1592#endif
1070} 1593}
1071 1594
1072/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1073static void noinline 1596static void noinline ecb_cold
1074fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1075{ 1598{
1076 int fd; 1599 int fd;
1077 1600
1078 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1082} 1605}
1083 1606
1084/* 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 */
1085static void noinline 1608static void noinline ecb_cold
1086fd_enomem (EV_P) 1609fd_enomem (EV_P)
1087{ 1610{
1088 int fd; 1611 int fd;
1089 1612
1090 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1285 1808
1286/*****************************************************************************/ 1809/*****************************************************************************/
1287 1810
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 1812
1290static void noinline 1813static void noinline ecb_cold
1291evpipe_init (EV_P) 1814evpipe_init (EV_P)
1292{ 1815{
1293 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1294 { 1817 {
1295# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1317 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 } 1842 }
1320} 1843}
1321 1844
1322inline_size void 1845inline_speed void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{ 1847{
1325 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)
1326 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1327 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331 1868
1332#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1333 if (evfd >= 0) 1870 if (evfd >= 0)
1334 { 1871 {
1335 uint64_t counter = 1; 1872 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1337 } 1874 }
1338 else 1875 else
1339#endif 1876#endif
1340 /* win32 people keep sending patches that change this write() to send() */ 1877 {
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1878#ifdef _WIN32
1342 /* so when you think this write should be a send instead, please find out */ 1879 WSABUF buf;
1343 /* where your send() is from - it's definitely not the microsoft send, and */ 1880 DWORD sent;
1344 /* tell me. thank you. */ 1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1345 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1346 1888
1347 errno = old_errno; 1889 errno = old_errno;
1348 } 1890 }
1349} 1891}
1350 1892
… …
1353static void 1895static void
1354pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1355{ 1897{
1356 int i; 1898 int i;
1357 1899
1900 if (revents & EV_READ)
1901 {
1358#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1903 if (evfd >= 0)
1360 { 1904 {
1361 uint64_t counter; 1905 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1363 } 1907 }
1364 else 1908 else
1365#endif 1909#endif
1366 { 1910 {
1367 char dummy; 1911 char dummy[4];
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1369 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1370 } 1923 }
1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 1928
1372#if EV_SIGNAL_ENABLE 1929#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 1930 if (sig_pending)
1374 { 1931 {
1375 sig_pending = 0; 1932 sig_pending = 0;
1933
1934 ECB_MEMORY_FENCE_RELEASE;
1376 1935
1377 for (i = EV_NSIG - 1; i--; ) 1936 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 1937 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1380 } 1939 }
… …
1382 1941
1383#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1384 if (async_pending) 1943 if (async_pending)
1385 { 1944 {
1386 async_pending = 0; 1945 async_pending = 0;
1946
1947 ECB_MEMORY_FENCE_RELEASE;
1387 1948
1388 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1390 { 1951 {
1391 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1396} 1957}
1397 1958
1398/*****************************************************************************/ 1959/*****************************************************************************/
1399 1960
1400void 1961void
1401ev_feed_signal (int signum) 1962ev_feed_signal (int signum) EV_THROW
1402{ 1963{
1403#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop; 1965 EV_P = signals [signum - 1].loop;
1405 1966
1406 if (!EV_A) 1967 if (!EV_A)
1407 return; 1968 return;
1408#endif 1969#endif
1409 1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1410 signals [signum - 1].pending = 1; 1974 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending); 1975 evpipe_write (EV_A_ &sig_pending);
1412} 1976}
1413 1977
1414static void 1978static void
… …
1420 1984
1421 ev_feed_signal (signum); 1985 ev_feed_signal (signum);
1422} 1986}
1423 1987
1424void noinline 1988void noinline
1425ev_feed_signal_event (EV_P_ int signum) 1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1426{ 1990{
1427 WL w; 1991 WL w;
1428 1992
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return; 1994 return;
… …
1545#endif 2109#endif
1546#if EV_USE_SELECT 2110#if EV_USE_SELECT
1547# include "ev_select.c" 2111# include "ev_select.c"
1548#endif 2112#endif
1549 2113
1550int 2114int ecb_cold
1551ev_version_major (void) 2115ev_version_major (void) EV_THROW
1552{ 2116{
1553 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1554} 2118}
1555 2119
1556int 2120int ecb_cold
1557ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1558{ 2122{
1559 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1560} 2124}
1561 2125
1562/* return true if we are running with elevated privileges and should ignore env variables */ 2126/* return true if we are running with elevated privileges and should ignore env variables */
1563int inline_size 2127int inline_size ecb_cold
1564enable_secure (void) 2128enable_secure (void)
1565{ 2129{
1566#ifdef _WIN32 2130#ifdef _WIN32
1567 return 0; 2131 return 0;
1568#else 2132#else
1569 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2134 || getgid () != getegid ();
1571#endif 2135#endif
1572} 2136}
1573 2137
1574unsigned int 2138unsigned int ecb_cold
1575ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1576{ 2140{
1577 unsigned int flags = 0; 2141 unsigned int flags = 0;
1578 2142
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1584 2148
1585 return flags; 2149 return flags;
1586} 2150}
1587 2151
1588unsigned int 2152unsigned int ecb_cold
1589ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1590{ 2154{
1591 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1592 2156
1593#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1605#endif 2169#endif
1606 2170
1607 return flags; 2171 return flags;
1608} 2172}
1609 2173
1610unsigned int 2174unsigned int ecb_cold
1611ev_embeddable_backends (void) 2175ev_embeddable_backends (void) EV_THROW
1612{ 2176{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2178
1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1618 2182
1619 return flags; 2183 return flags;
1620} 2184}
1621 2185
1622unsigned int 2186unsigned int
1623ev_backend (EV_P) 2187ev_backend (EV_P) EV_THROW
1624{ 2188{
1625 return backend; 2189 return backend;
1626} 2190}
1627 2191
1628#if EV_FEATURE_API 2192#if EV_FEATURE_API
1629unsigned int 2193unsigned int
1630ev_iteration (EV_P) 2194ev_iteration (EV_P) EV_THROW
1631{ 2195{
1632 return loop_count; 2196 return loop_count;
1633} 2197}
1634 2198
1635unsigned int 2199unsigned int
1636ev_depth (EV_P) 2200ev_depth (EV_P) EV_THROW
1637{ 2201{
1638 return loop_depth; 2202 return loop_depth;
1639} 2203}
1640 2204
1641void 2205void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1643{ 2207{
1644 io_blocktime = interval; 2208 io_blocktime = interval;
1645} 2209}
1646 2210
1647void 2211void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1649{ 2213{
1650 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1651} 2215}
1652 2216
1653void 2217void
1654ev_set_userdata (EV_P_ void *data) 2218ev_set_userdata (EV_P_ void *data) EV_THROW
1655{ 2219{
1656 userdata = data; 2220 userdata = data;
1657} 2221}
1658 2222
1659void * 2223void *
1660ev_userdata (EV_P) 2224ev_userdata (EV_P) EV_THROW
1661{ 2225{
1662 return userdata; 2226 return userdata;
1663} 2227}
1664 2228
2229void
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1666{ 2231{
1667 invoke_cb = invoke_pending_cb; 2232 invoke_cb = invoke_pending_cb;
1668} 2233}
1669 2234
2235void
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1671{ 2237{
1672 release_cb = release; 2238 release_cb = release;
1673 acquire_cb = acquire; 2239 acquire_cb = acquire;
1674} 2240}
1675#endif 2241#endif
1676 2242
1677/* initialise a loop structure, must be zero-initialised */ 2243/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2244static void noinline ecb_cold
1679loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1680{ 2246{
1681 if (!backend) 2247 if (!backend)
1682 { 2248 {
1683 origflags = flags; 2249 origflags = flags;
1684 2250
… …
1711 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2278 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2281
1716 ev_rt_now = ev_time (); 2282 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2283 mn_now = get_clock ();
1718 now_floor = mn_now; 2284 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2285 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2286#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2287 invoke_cb = ev_invoke_pending;
1722#endif 2288#endif
1723 2289
1724 io_blocktime = 0.; 2290 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2291 timeout_blocktime = 0.;
1726 backend = 0; 2292 backend = 0;
1727 backend_fd = -1; 2293 backend_fd = -1;
1728 sig_pending = 0; 2294 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2295#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2296 async_pending = 0;
1731#endif 2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
1732#if EV_USE_INOTIFY 2300#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2302#endif
1735#if EV_USE_SIGNALFD 2303#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2305#endif
1738 2306
1739 if (!(flags & EVBACKEND_MASK)) 2307 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1741 2309
… …
1766#endif 2334#endif
1767 } 2335 }
1768} 2336}
1769 2337
1770/* free up a loop structure */ 2338/* free up a loop structure */
1771void 2339void ecb_cold
1772ev_loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1773{ 2341{
1774 int i; 2342 int i;
1775 2343
1776#if EV_MULTIPLICITY 2344#if EV_MULTIPLICITY
… …
1787 EV_INVOKE_PENDING; 2355 EV_INVOKE_PENDING;
1788 } 2356 }
1789#endif 2357#endif
1790 2358
1791#if EV_CHILD_ENABLE 2359#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 2360 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 2361 {
1794 ev_ref (EV_A); /* child watcher */ 2362 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 2363 ev_signal_stop (EV_A_ &childev);
1796 } 2364 }
1797#endif 2365#endif
… …
1906 infy_fork (EV_A); 2474 infy_fork (EV_A);
1907#endif 2475#endif
1908 2476
1909 if (ev_is_active (&pipe_w)) 2477 if (ev_is_active (&pipe_w))
1910 { 2478 {
1911 /* this "locks" the handlers against writing to the pipe */ 2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 2480
1918 ev_ref (EV_A); 2481 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 2482 ev_io_stop (EV_A_ &pipe_w);
1920 2483
1921#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
… …
1939 postfork = 0; 2502 postfork = 0;
1940} 2503}
1941 2504
1942#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1943 2506
1944struct ev_loop * 2507struct ev_loop * ecb_cold
1945ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1946{ 2509{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 2511
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
… …
1957} 2520}
1958 2521
1959#endif /* multiplicity */ 2522#endif /* multiplicity */
1960 2523
1961#if EV_VERIFY 2524#if EV_VERIFY
1962static void noinline 2525static void noinline ecb_cold
1963verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1964{ 2527{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966 2529
1967 if (w->pending) 2530 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969} 2532}
1970 2533
1971static void noinline 2534static void noinline ecb_cold
1972verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1973{ 2536{
1974 int i; 2537 int i;
1975 2538
1976 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 2544
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 2546 }
1984} 2547}
1985 2548
1986static void noinline 2549static void noinline ecb_cold
1987array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1988{ 2551{
1989 while (cnt--) 2552 while (cnt--)
1990 { 2553 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 2556 }
1994} 2557}
1995#endif 2558#endif
1996 2559
1997#if EV_FEATURE_API 2560#if EV_FEATURE_API
1998void 2561void ecb_cold
1999ev_verify (EV_P) 2562ev_verify (EV_P) EV_THROW
2000{ 2563{
2001#if EV_VERIFY 2564#if EV_VERIFY
2002 int i; 2565 int i;
2003 WL w; 2566 WL w, w2;
2004 2567
2005 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
2006 2569
2007 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 2573
2011 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
2013 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 2580 {
2015 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 } 2591 }
2592 }
2019 2593
2020 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
2022 2596
2023#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
2069#endif 2643#endif
2070} 2644}
2071#endif 2645#endif
2072 2646
2073#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
2074struct ev_loop * 2648struct ev_loop * ecb_cold
2075#else 2649#else
2076int 2650int
2077#endif 2651#endif
2078ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
2079{ 2653{
2080 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
2081 { 2655 {
2082#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 2676
2103 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
2104} 2678}
2105 2679
2106void 2680void
2107ev_loop_fork (EV_P) 2681ev_loop_fork (EV_P) EV_THROW
2108{ 2682{
2109 postfork = 1; /* must be in line with ev_default_fork */ 2683 postfork = 1; /* must be in line with ev_default_fork */
2110} 2684}
2111 2685
2112/*****************************************************************************/ 2686/*****************************************************************************/
… …
2116{ 2690{
2117 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
2118} 2692}
2119 2693
2120unsigned int 2694unsigned int
2121ev_pending_count (EV_P) 2695ev_pending_count (EV_P) EV_THROW
2122{ 2696{
2123 int pri; 2697 int pri;
2124 unsigned int count = 0; 2698 unsigned int count = 0;
2125 2699
2126 for (pri = NUMPRI; pri--; ) 2700 for (pri = NUMPRI; pri--; )
… …
2130} 2704}
2131 2705
2132void noinline 2706void noinline
2133ev_invoke_pending (EV_P) 2707ev_invoke_pending (EV_P)
2134{ 2708{
2135 int pri; 2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2136
2137 for (pri = NUMPRI; pri--; )
2138 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
2139 { 2711 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 2713
2142 p->w->pending = 0; 2714 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
2145 } 2717 }
… …
2208 } 2780 }
2209} 2781}
2210 2782
2211#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
2212 2784
2213inline_speed void 2785static void noinline
2214periodic_recalc (EV_P_ ev_periodic *w) 2786periodic_recalc (EV_P_ ev_periodic *w)
2215{ 2787{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2790
2791 /* the above almost always errs on the low side */
2792 while (at <= ev_rt_now)
2793 {
2794 ev_tstamp nat = at + w->interval;
2795
2796 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at))
2798 {
2799 at = ev_rt_now;
2800 break;
2801 }
2802
2803 at = nat;
2804 }
2805
2806 ev_at (w) = at;
2219} 2807}
2220 2808
2221/* make periodics pending */ 2809/* make periodics pending */
2222inline_size void 2810inline_size void
2223periodics_reify (EV_P) 2811periodics_reify (EV_P)
… …
2245 downheap (periodics, periodiccnt, HEAP0); 2833 downheap (periodics, periodiccnt, HEAP0);
2246 } 2834 }
2247 else if (w->interval) 2835 else if (w->interval)
2248 { 2836 {
2249 periodic_recalc (EV_A_ w); 2837 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 2838 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 2839 downheap (periodics, periodiccnt, HEAP0);
2266 } 2840 }
2267 else 2841 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 2850 }
2277} 2851}
2278 2852
2279/* simply recalculate all periodics */ 2853/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2854/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline 2855static void noinline ecb_cold
2282periodics_reschedule (EV_P) 2856periodics_reschedule (EV_P)
2283{ 2857{
2284 int i; 2858 int i;
2285 2859
2286 /* adjust periodics after time jump */ 2860 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 2873 reheap (periodics, periodiccnt);
2300} 2874}
2301#endif 2875#endif
2302 2876
2303/* adjust all timers by a given offset */ 2877/* adjust all timers by a given offset */
2304static void noinline 2878static void noinline ecb_cold
2305timers_reschedule (EV_P_ ev_tstamp adjust) 2879timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 2880{
2307 int i; 2881 int i;
2308 2882
2309 for (i = 0; i < timercnt; ++i) 2883 for (i = 0; i < timercnt; ++i)
… …
2346 * doesn't hurt either as we only do this on time-jumps or 2920 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 2921 * in the unlikely event of having been preempted here.
2348 */ 2922 */
2349 for (i = 4; --i; ) 2923 for (i = 4; --i; )
2350 { 2924 {
2925 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 2926 rtmn_diff = ev_rt_now - mn_now;
2352 2927
2928 diff = odiff - rtmn_diff;
2929
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2930 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 2931 return; /* all is well */
2355 2932
2356 ev_rt_now = ev_time (); 2933 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 2934 mn_now = get_clock ();
2358 now_floor = mn_now; 2935 now_floor = mn_now;
… …
2380 2957
2381 mn_now = ev_rt_now; 2958 mn_now = ev_rt_now;
2382 } 2959 }
2383} 2960}
2384 2961
2385void 2962int
2386ev_run (EV_P_ int flags) 2963ev_run (EV_P_ int flags)
2387{ 2964{
2388#if EV_FEATURE_API 2965#if EV_FEATURE_API
2389 ++loop_depth; 2966 ++loop_depth;
2390#endif 2967#endif
… …
2448 ev_tstamp prev_mn_now = mn_now; 3025 ev_tstamp prev_mn_now = mn_now;
2449 3026
2450 /* update time to cancel out callback processing overhead */ 3027 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3028 time_update (EV_A_ 1e100);
2452 3029
3030 /* from now on, we want a pipe-wake-up */
3031 pipe_write_wanted = 1;
3032
3033 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3034
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3035 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3036 {
2455 waittime = MAX_BLOCKTIME; 3037 waittime = MAX_BLOCKTIME;
2456 3038
2457 if (timercnt) 3039 if (timercnt)
2458 { 3040 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3042 if (waittime > to) waittime = to;
2461 } 3043 }
2462 3044
2463#if EV_PERIODIC_ENABLE 3045#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3046 if (periodiccnt)
2465 { 3047 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3049 if (waittime > to) waittime = to;
2468 } 3050 }
2469#endif 3051#endif
2470 3052
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3053 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3054 if (expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime; 3055 waittime = timeout_blocktime;
3056
3057 /* at this point, we NEED to wait, so we have to ensure */
3058 /* to pass a minimum nonzero value to the backend */
3059 if (expect_false (waittime < backend_mintime))
3060 waittime = backend_mintime;
2474 3061
2475 /* extra check because io_blocktime is commonly 0 */ 3062 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3063 if (expect_false (io_blocktime))
2477 { 3064 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3065 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3066
2480 if (sleeptime > waittime - backend_fudge) 3067 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3068 sleeptime = waittime - backend_mintime;
2482 3069
2483 if (expect_true (sleeptime > 0.)) 3070 if (expect_true (sleeptime > 0.))
2484 { 3071 {
2485 ev_sleep (sleeptime); 3072 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3073 waittime -= sleeptime;
… …
2493#endif 3080#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3081 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3082 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 3084
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086
3087 if (pipe_write_skipped)
3088 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 }
3092
3093
2498 /* update ev_rt_now, do magic */ 3094 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3095 time_update (EV_A_ waittime + sleeptime);
2500 } 3096 }
2501 3097
2502 /* queue pending timers and reschedule them */ 3098 /* queue pending timers and reschedule them */
… …
2528 loop_done = EVBREAK_CANCEL; 3124 loop_done = EVBREAK_CANCEL;
2529 3125
2530#if EV_FEATURE_API 3126#if EV_FEATURE_API
2531 --loop_depth; 3127 --loop_depth;
2532#endif 3128#endif
3129
3130 return activecnt;
2533} 3131}
2534 3132
2535void 3133void
2536ev_break (EV_P_ int how) 3134ev_break (EV_P_ int how) EV_THROW
2537{ 3135{
2538 loop_done = how; 3136 loop_done = how;
2539} 3137}
2540 3138
2541void 3139void
2542ev_ref (EV_P) 3140ev_ref (EV_P) EV_THROW
2543{ 3141{
2544 ++activecnt; 3142 ++activecnt;
2545} 3143}
2546 3144
2547void 3145void
2548ev_unref (EV_P) 3146ev_unref (EV_P) EV_THROW
2549{ 3147{
2550 --activecnt; 3148 --activecnt;
2551} 3149}
2552 3150
2553void 3151void
2554ev_now_update (EV_P) 3152ev_now_update (EV_P) EV_THROW
2555{ 3153{
2556 time_update (EV_A_ 1e100); 3154 time_update (EV_A_ 1e100);
2557} 3155}
2558 3156
2559void 3157void
2560ev_suspend (EV_P) 3158ev_suspend (EV_P) EV_THROW
2561{ 3159{
2562 ev_now_update (EV_A); 3160 ev_now_update (EV_A);
2563} 3161}
2564 3162
2565void 3163void
2566ev_resume (EV_P) 3164ev_resume (EV_P) EV_THROW
2567{ 3165{
2568 ev_tstamp mn_prev = mn_now; 3166 ev_tstamp mn_prev = mn_now;
2569 3167
2570 ev_now_update (EV_A); 3168 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3169 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2610 w->pending = 0; 3208 w->pending = 0;
2611 } 3209 }
2612} 3210}
2613 3211
2614int 3212int
2615ev_clear_pending (EV_P_ void *w) 3213ev_clear_pending (EV_P_ void *w) EV_THROW
2616{ 3214{
2617 W w_ = (W)w; 3215 W w_ = (W)w;
2618 int pending = w_->pending; 3216 int pending = w_->pending;
2619 3217
2620 if (expect_true (pending)) 3218 if (expect_true (pending))
… …
2653} 3251}
2654 3252
2655/*****************************************************************************/ 3253/*****************************************************************************/
2656 3254
2657void noinline 3255void noinline
2658ev_io_start (EV_P_ ev_io *w) 3256ev_io_start (EV_P_ ev_io *w) EV_THROW
2659{ 3257{
2660 int fd = w->fd; 3258 int fd = w->fd;
2661 3259
2662 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2663 return; 3261 return;
… …
2669 3267
2670 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2672 wlist_add (&anfds[fd].head, (WL)w); 3270 wlist_add (&anfds[fd].head, (WL)w);
2673 3271
3272 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274
2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3275 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2675 w->events &= ~EV__IOFDSET; 3276 w->events &= ~EV__IOFDSET;
2676 3277
2677 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2678} 3279}
2679 3280
2680void noinline 3281void noinline
2681ev_io_stop (EV_P_ ev_io *w) 3282ev_io_stop (EV_P_ ev_io *w) EV_THROW
2682{ 3283{
2683 clear_pending (EV_A_ (W)w); 3284 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3285 if (expect_false (!ev_is_active (w)))
2685 return; 3286 return;
2686 3287
… …
2695 3296
2696 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2697} 3298}
2698 3299
2699void noinline 3300void noinline
2700ev_timer_start (EV_P_ ev_timer *w) 3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2701{ 3302{
2702 if (expect_false (ev_is_active (w))) 3303 if (expect_false (ev_is_active (w)))
2703 return; 3304 return;
2704 3305
2705 ev_at (w) += mn_now; 3306 ev_at (w) += mn_now;
… …
2719 3320
2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2721} 3322}
2722 3323
2723void noinline 3324void noinline
2724ev_timer_stop (EV_P_ ev_timer *w) 3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2725{ 3326{
2726 clear_pending (EV_A_ (W)w); 3327 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3328 if (expect_false (!ev_is_active (w)))
2728 return; 3329 return;
2729 3330
… …
2749 3350
2750 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2751} 3352}
2752 3353
2753void noinline 3354void noinline
2754ev_timer_again (EV_P_ ev_timer *w) 3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2755{ 3356{
2756 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
3358
3359 clear_pending (EV_A_ (W)w);
2757 3360
2758 if (ev_is_active (w)) 3361 if (ev_is_active (w))
2759 { 3362 {
2760 if (w->repeat) 3363 if (w->repeat)
2761 { 3364 {
… …
2774 3377
2775 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
2776} 3379}
2777 3380
2778ev_tstamp 3381ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2780{ 3383{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 3385}
2783 3386
2784#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2785void noinline 3388void noinline
2786ev_periodic_start (EV_P_ ev_periodic *w) 3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2787{ 3390{
2788 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2789 return; 3392 return;
2790 3393
2791 if (w->reschedule_cb) 3394 if (w->reschedule_cb)
… …
2811 3414
2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2813} 3416}
2814 3417
2815void noinline 3418void noinline
2816ev_periodic_stop (EV_P_ ev_periodic *w) 3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2817{ 3420{
2818 clear_pending (EV_A_ (W)w); 3421 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 3422 if (expect_false (!ev_is_active (w)))
2820 return; 3423 return;
2821 3424
… …
2839 3442
2840 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2841} 3444}
2842 3445
2843void noinline 3446void noinline
2844ev_periodic_again (EV_P_ ev_periodic *w) 3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2845{ 3448{
2846 /* TODO: use adjustheap and recalculation */ 3449 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 3450 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 3451 ev_periodic_start (EV_A_ w);
2849} 3452}
… …
2854#endif 3457#endif
2855 3458
2856#if EV_SIGNAL_ENABLE 3459#if EV_SIGNAL_ENABLE
2857 3460
2858void noinline 3461void noinline
2859ev_signal_start (EV_P_ ev_signal *w) 3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2860{ 3463{
2861 if (expect_false (ev_is_active (w))) 3464 if (expect_false (ev_is_active (w)))
2862 return; 3465 return;
2863 3466
2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2935 3538
2936 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2937} 3540}
2938 3541
2939void noinline 3542void noinline
2940ev_signal_stop (EV_P_ ev_signal *w) 3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2941{ 3544{
2942 clear_pending (EV_A_ (W)w); 3545 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 3546 if (expect_false (!ev_is_active (w)))
2944 return; 3547 return;
2945 3548
… …
2976#endif 3579#endif
2977 3580
2978#if EV_CHILD_ENABLE 3581#if EV_CHILD_ENABLE
2979 3582
2980void 3583void
2981ev_child_start (EV_P_ ev_child *w) 3584ev_child_start (EV_P_ ev_child *w) EV_THROW
2982{ 3585{
2983#if EV_MULTIPLICITY 3586#if EV_MULTIPLICITY
2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2985#endif 3588#endif
2986 if (expect_false (ev_is_active (w))) 3589 if (expect_false (ev_is_active (w)))
… …
2993 3596
2994 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2995} 3598}
2996 3599
2997void 3600void
2998ev_child_stop (EV_P_ ev_child *w) 3601ev_child_stop (EV_P_ ev_child *w) EV_THROW
2999{ 3602{
3000 clear_pending (EV_A_ (W)w); 3603 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 3604 if (expect_false (!ev_is_active (w)))
3002 return; 3605 return;
3003 3606
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3758 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 3759 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 3760 }
3158} 3761}
3159 3762
3160inline_size void 3763inline_size void ecb_cold
3161ev_check_2625 (EV_P) 3764ev_check_2625 (EV_P)
3162{ 3765{
3163 /* kernels < 2.6.25 are borked 3766 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */ 3768 */
… …
3170} 3773}
3171 3774
3172inline_size int 3775inline_size int
3173infy_newfd (void) 3776infy_newfd (void)
3174{ 3777{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3778#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3779 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 3780 if (fd >= 0)
3178 return fd; 3781 return fd;
3179#endif 3782#endif
3180 return inotify_init (); 3783 return inotify_init ();
… …
3255#else 3858#else
3256# define EV_LSTAT(p,b) lstat (p, b) 3859# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 3860#endif
3258 3861
3259void 3862void
3260ev_stat_stat (EV_P_ ev_stat *w) 3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3261{ 3864{
3262 if (lstat (w->path, &w->attr) < 0) 3865 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 3866 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 3867 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 3868 w->attr.st_nlink = 1;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 3907 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 3908 }
3306} 3909}
3307 3910
3308void 3911void
3309ev_stat_start (EV_P_ ev_stat *w) 3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3310{ 3913{
3311 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3312 return; 3915 return;
3313 3916
3314 ev_stat_stat (EV_A_ w); 3917 ev_stat_stat (EV_A_ w);
… …
3335 3938
3336 EV_FREQUENT_CHECK; 3939 EV_FREQUENT_CHECK;
3337} 3940}
3338 3941
3339void 3942void
3340ev_stat_stop (EV_P_ ev_stat *w) 3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3341{ 3944{
3342 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
3344 return; 3947 return;
3345 3948
… …
3361} 3964}
3362#endif 3965#endif
3363 3966
3364#if EV_IDLE_ENABLE 3967#if EV_IDLE_ENABLE
3365void 3968void
3366ev_idle_start (EV_P_ ev_idle *w) 3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3367{ 3970{
3368 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
3369 return; 3972 return;
3370 3973
3371 pri_adjust (EV_A_ (W)w); 3974 pri_adjust (EV_A_ (W)w);
… …
3384 3987
3385 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3386} 3989}
3387 3990
3388void 3991void
3389ev_idle_stop (EV_P_ ev_idle *w) 3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3390{ 3993{
3391 clear_pending (EV_A_ (W)w); 3994 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 3995 if (expect_false (!ev_is_active (w)))
3393 return; 3996 return;
3394 3997
… …
3408} 4011}
3409#endif 4012#endif
3410 4013
3411#if EV_PREPARE_ENABLE 4014#if EV_PREPARE_ENABLE
3412void 4015void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3414{ 4017{
3415 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3416 return; 4019 return;
3417 4020
3418 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
3423 4026
3424 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3425} 4028}
3426 4029
3427void 4030void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3429{ 4032{
3430 clear_pending (EV_A_ (W)w); 4033 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4034 if (expect_false (!ev_is_active (w)))
3432 return; 4035 return;
3433 4036
… …
3446} 4049}
3447#endif 4050#endif
3448 4051
3449#if EV_CHECK_ENABLE 4052#if EV_CHECK_ENABLE
3450void 4053void
3451ev_check_start (EV_P_ ev_check *w) 4054ev_check_start (EV_P_ ev_check *w) EV_THROW
3452{ 4055{
3453 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3454 return; 4057 return;
3455 4058
3456 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
… …
3461 4064
3462 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
3463} 4066}
3464 4067
3465void 4068void
3466ev_check_stop (EV_P_ ev_check *w) 4069ev_check_stop (EV_P_ ev_check *w) EV_THROW
3467{ 4070{
3468 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4072 if (expect_false (!ev_is_active (w)))
3470 return; 4073 return;
3471 4074
… …
3484} 4087}
3485#endif 4088#endif
3486 4089
3487#if EV_EMBED_ENABLE 4090#if EV_EMBED_ENABLE
3488void noinline 4091void noinline
3489ev_embed_sweep (EV_P_ ev_embed *w) 4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3490{ 4093{
3491 ev_run (w->other, EVRUN_NOWAIT); 4094 ev_run (w->other, EVRUN_NOWAIT);
3492} 4095}
3493 4096
3494static void 4097static void
… …
3542 ev_idle_stop (EV_A_ idle); 4145 ev_idle_stop (EV_A_ idle);
3543} 4146}
3544#endif 4147#endif
3545 4148
3546void 4149void
3547ev_embed_start (EV_P_ ev_embed *w) 4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3548{ 4151{
3549 if (expect_false (ev_is_active (w))) 4152 if (expect_false (ev_is_active (w)))
3550 return; 4153 return;
3551 4154
3552 { 4155 {
… …
3573 4176
3574 EV_FREQUENT_CHECK; 4177 EV_FREQUENT_CHECK;
3575} 4178}
3576 4179
3577void 4180void
3578ev_embed_stop (EV_P_ ev_embed *w) 4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3579{ 4182{
3580 clear_pending (EV_A_ (W)w); 4183 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4184 if (expect_false (!ev_is_active (w)))
3582 return; 4185 return;
3583 4186
… …
3593} 4196}
3594#endif 4197#endif
3595 4198
3596#if EV_FORK_ENABLE 4199#if EV_FORK_ENABLE
3597void 4200void
3598ev_fork_start (EV_P_ ev_fork *w) 4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3599{ 4202{
3600 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3601 return; 4204 return;
3602 4205
3603 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
… …
3608 4211
3609 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3610} 4213}
3611 4214
3612void 4215void
3613ev_fork_stop (EV_P_ ev_fork *w) 4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3614{ 4217{
3615 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
3617 return; 4220 return;
3618 4221
… …
3631} 4234}
3632#endif 4235#endif
3633 4236
3634#if EV_CLEANUP_ENABLE 4237#if EV_CLEANUP_ENABLE
3635void 4238void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3637{ 4240{
3638 if (expect_false (ev_is_active (w))) 4241 if (expect_false (ev_is_active (w)))
3639 return; 4242 return;
3640 4243
3641 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
… …
3648 ev_unref (EV_A); 4251 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
3650} 4253}
3651 4254
3652void 4255void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3654{ 4257{
3655 clear_pending (EV_A_ (W)w); 4258 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4259 if (expect_false (!ev_is_active (w)))
3657 return; 4260 return;
3658 4261
… …
3672} 4275}
3673#endif 4276#endif
3674 4277
3675#if EV_ASYNC_ENABLE 4278#if EV_ASYNC_ENABLE
3676void 4279void
3677ev_async_start (EV_P_ ev_async *w) 4280ev_async_start (EV_P_ ev_async *w) EV_THROW
3678{ 4281{
3679 if (expect_false (ev_is_active (w))) 4282 if (expect_false (ev_is_active (w)))
3680 return; 4283 return;
3681 4284
3682 w->sent = 0; 4285 w->sent = 0;
… …
3691 4294
3692 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3693} 4296}
3694 4297
3695void 4298void
3696ev_async_stop (EV_P_ ev_async *w) 4299ev_async_stop (EV_P_ ev_async *w) EV_THROW
3697{ 4300{
3698 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3700 return; 4303 return;
3701 4304
… …
3712 4315
3713 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3714} 4317}
3715 4318
3716void 4319void
3717ev_async_send (EV_P_ ev_async *w) 4320ev_async_send (EV_P_ ev_async *w) EV_THROW
3718{ 4321{
3719 w->sent = 1; 4322 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 4323 evpipe_write (EV_A_ &async_pending);
3721} 4324}
3722#endif 4325#endif
… …
3759 4362
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3761} 4364}
3762 4365
3763void 4366void
3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3765{ 4368{
3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3767 4370
3768 if (expect_false (!once)) 4371 if (expect_false (!once))
3769 { 4372 {
… …
3790} 4393}
3791 4394
3792/*****************************************************************************/ 4395/*****************************************************************************/
3793 4396
3794#if EV_WALK_ENABLE 4397#if EV_WALK_ENABLE
3795void 4398void ecb_cold
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3797{ 4400{
3798 int i, j; 4401 int i, j;
3799 ev_watcher_list *wl, *wn; 4402 ev_watcher_list *wl, *wn;
3800 4403
3801 if (types & (EV_IO | EV_EMBED)) 4404 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4447 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 4448#endif
3846 4449
3847#if EV_IDLE_ENABLE 4450#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 4451 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 4452 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 4453 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 4454 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 4455#endif
3853 4456
3854#if EV_FORK_ENABLE 4457#if EV_FORK_ENABLE
… …
3907 4510
3908#if EV_MULTIPLICITY 4511#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 4512 #include "ev_wrap.h"
3910#endif 4513#endif
3911 4514
3912EV_CPP(})
3913

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines