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Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.435 by root, Sat May 26 08:52:09 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 *
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,
… …
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) 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
… …
604 abort (); 1133 abort ();
605 } 1134 }
606} 1135}
607 1136
608static void * 1137static void *
609ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size) EV_THROW
610{ 1139{
611#if __GLIBC__ 1140#if __GLIBC__
612 return realloc (ptr, size); 1141 return realloc (ptr, size);
613#else 1142#else
614 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
… …
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) 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
… …
974inline_size void 1497inline_size void
975fd_reify (EV_P) 1498fd_reify (EV_P)
976{ 1499{
977 int i; 1500 int i;
978 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
979 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
980 { 1528 {
981 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
983 ev_io *w; 1531 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 1533 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 1534 unsigned char o_reify = anfd->reify;
987 1535
988 anfd->reify = 0; 1536 anfd->reify = 0;
989 1537
990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
991 if (o_reify & EV__IOFDSET)
992 {
993 unsigned long arg;
994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
997 }
998#endif
999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 1539 {
1002 anfd->events = 0; 1540 anfd->events = 0;
1003 1541
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1029 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
1030 } 1568 }
1031} 1569}
1032 1570
1033/* 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 */
1034inline_speed void 1572inline_speed void ecb_cold
1035fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
1036{ 1574{
1037 ev_io *w; 1575 ev_io *w;
1038 1576
1039 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
1042 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);
1043 } 1581 }
1044} 1582}
1045 1583
1046/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 1585inline_size int ecb_cold
1048fd_valid (int fd) 1586fd_valid (int fd)
1049{ 1587{
1050#ifdef _WIN32 1588#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 1590#else
1053 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1054#endif 1592#endif
1055} 1593}
1056 1594
1057/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1058static void noinline 1596static void noinline ecb_cold
1059fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1060{ 1598{
1061 int fd; 1599 int fd;
1062 1600
1063 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1067} 1605}
1068 1606
1069/* 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 */
1070static void noinline 1608static void noinline ecb_cold
1071fd_enomem (EV_P) 1609fd_enomem (EV_P)
1072{ 1610{
1073 int fd; 1611 int fd;
1074 1612
1075 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1270 1808
1271/*****************************************************************************/ 1809/*****************************************************************************/
1272 1810
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 1812
1275static void noinline 1813static void noinline ecb_cold
1276evpipe_init (EV_P) 1814evpipe_init (EV_P)
1277{ 1815{
1278 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1279 { 1817 {
1280# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1302 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 } 1842 }
1305} 1843}
1306 1844
1307inline_size void 1845inline_speed void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{ 1847{
1310 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)
1311 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1312 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316 1868
1317#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1318 if (evfd >= 0) 1870 if (evfd >= 0)
1319 { 1871 {
1320 uint64_t counter = 1; 1872 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1322 } 1874 }
1323 else 1875 else
1324#endif 1876#endif
1325 /* win32 people keep sending patches that change this write() to send() */ 1877 {
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1878#ifdef _WIN32
1327 /* so when you think this write should be a send instead, please find out */ 1879 WSABUF buf;
1328 /* where your send() is from - it's definitely not the microsoft send, and */ 1880 DWORD sent;
1329 /* 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
1330 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1331 1888
1332 errno = old_errno; 1889 errno = old_errno;
1333 } 1890 }
1334} 1891}
1335 1892
… …
1338static void 1895static void
1339pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1340{ 1897{
1341 int i; 1898 int i;
1342 1899
1900 if (revents & EV_READ)
1901 {
1343#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1344 if (evfd >= 0) 1903 if (evfd >= 0)
1345 { 1904 {
1346 uint64_t counter; 1905 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1348 } 1907 }
1349 else 1908 else
1350#endif 1909#endif
1351 { 1910 {
1352 char dummy; 1911 char dummy[4];
1353 /* 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
1354 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1355 } 1923 }
1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1356 1928
1357#if EV_SIGNAL_ENABLE 1929#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 1930 if (sig_pending)
1359 { 1931 {
1360 sig_pending = 0; 1932 sig_pending = 0;
1933
1934 ECB_MEMORY_FENCE_RELEASE;
1361 1935
1362 for (i = EV_NSIG - 1; i--; ) 1936 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 1937 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1365 } 1939 }
… …
1367 1941
1368#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1369 if (async_pending) 1943 if (async_pending)
1370 { 1944 {
1371 async_pending = 0; 1945 async_pending = 0;
1946
1947 ECB_MEMORY_FENCE_RELEASE;
1372 1948
1373 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1374 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1375 { 1951 {
1376 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1381} 1957}
1382 1958
1383/*****************************************************************************/ 1959/*****************************************************************************/
1384 1960
1385void 1961void
1386ev_feed_signal (int signum) 1962ev_feed_signal (int signum) EV_THROW
1387{ 1963{
1388#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1389 EV_P = signals [signum - 1].loop; 1965 EV_P = signals [signum - 1].loop;
1390 1966
1391 if (!EV_A) 1967 if (!EV_A)
1392 return; 1968 return;
1393#endif 1969#endif
1394 1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1395 signals [signum - 1].pending = 1; 1974 signals [signum - 1].pending = 1;
1396 evpipe_write (EV_A_ &sig_pending); 1975 evpipe_write (EV_A_ &sig_pending);
1397} 1976}
1398 1977
1399static void 1978static void
… …
1405 1984
1406 ev_feed_signal (signum); 1985 ev_feed_signal (signum);
1407} 1986}
1408 1987
1409void noinline 1988void noinline
1410ev_feed_signal_event (EV_P_ int signum) 1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1411{ 1990{
1412 WL w; 1991 WL w;
1413 1992
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1415 return; 1994 return;
… …
1530#endif 2109#endif
1531#if EV_USE_SELECT 2110#if EV_USE_SELECT
1532# include "ev_select.c" 2111# include "ev_select.c"
1533#endif 2112#endif
1534 2113
1535int 2114int ecb_cold
1536ev_version_major (void) 2115ev_version_major (void) EV_THROW
1537{ 2116{
1538 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1539} 2118}
1540 2119
1541int 2120int ecb_cold
1542ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1543{ 2122{
1544 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1545} 2124}
1546 2125
1547/* 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 */
1548int inline_size 2127int inline_size ecb_cold
1549enable_secure (void) 2128enable_secure (void)
1550{ 2129{
1551#ifdef _WIN32 2130#ifdef _WIN32
1552 return 0; 2131 return 0;
1553#else 2132#else
1554 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2134 || getgid () != getegid ();
1556#endif 2135#endif
1557} 2136}
1558 2137
1559unsigned int 2138unsigned int ecb_cold
1560ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1561{ 2140{
1562 unsigned int flags = 0; 2141 unsigned int flags = 0;
1563 2142
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1569 2148
1570 return flags; 2149 return flags;
1571} 2150}
1572 2151
1573unsigned int 2152unsigned int ecb_cold
1574ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1575{ 2154{
1576 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1577 2156
1578#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1590#endif 2169#endif
1591 2170
1592 return flags; 2171 return flags;
1593} 2172}
1594 2173
1595unsigned int 2174unsigned int ecb_cold
1596ev_embeddable_backends (void) 2175ev_embeddable_backends (void) EV_THROW
1597{ 2176{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2178
1600 /* 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 */
1601 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 */
… …
1603 2182
1604 return flags; 2183 return flags;
1605} 2184}
1606 2185
1607unsigned int 2186unsigned int
1608ev_backend (EV_P) 2187ev_backend (EV_P) EV_THROW
1609{ 2188{
1610 return backend; 2189 return backend;
1611} 2190}
1612 2191
1613#if EV_FEATURE_API 2192#if EV_FEATURE_API
1614unsigned int 2193unsigned int
1615ev_iteration (EV_P) 2194ev_iteration (EV_P) EV_THROW
1616{ 2195{
1617 return loop_count; 2196 return loop_count;
1618} 2197}
1619 2198
1620unsigned int 2199unsigned int
1621ev_depth (EV_P) 2200ev_depth (EV_P) EV_THROW
1622{ 2201{
1623 return loop_depth; 2202 return loop_depth;
1624} 2203}
1625 2204
1626void 2205void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1628{ 2207{
1629 io_blocktime = interval; 2208 io_blocktime = interval;
1630} 2209}
1631 2210
1632void 2211void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1634{ 2213{
1635 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1636} 2215}
1637 2216
1638void 2217void
1639ev_set_userdata (EV_P_ void *data) 2218ev_set_userdata (EV_P_ void *data) EV_THROW
1640{ 2219{
1641 userdata = data; 2220 userdata = data;
1642} 2221}
1643 2222
1644void * 2223void *
1645ev_userdata (EV_P) 2224ev_userdata (EV_P) EV_THROW
1646{ 2225{
1647 return userdata; 2226 return userdata;
1648} 2227}
1649 2228
2229void
1650void 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
1651{ 2231{
1652 invoke_cb = invoke_pending_cb; 2232 invoke_cb = invoke_pending_cb;
1653} 2233}
1654 2234
2235void
1655void 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
1656{ 2237{
1657 release_cb = release; 2238 release_cb = release;
1658 acquire_cb = acquire; 2239 acquire_cb = acquire;
1659} 2240}
1660#endif 2241#endif
1661 2242
1662/* initialise a loop structure, must be zero-initialised */ 2243/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2244static void noinline ecb_cold
1664loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1665{ 2246{
1666 if (!backend) 2247 if (!backend)
1667 { 2248 {
1668 origflags = flags; 2249 origflags = flags;
1669 2250
… …
1696 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2278 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2281
1701 ev_rt_now = ev_time (); 2282 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2283 mn_now = get_clock ();
1703 now_floor = mn_now; 2284 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2285 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2286#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2287 invoke_cb = ev_invoke_pending;
1707#endif 2288#endif
1708 2289
1709 io_blocktime = 0.; 2290 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2291 timeout_blocktime = 0.;
1711 backend = 0; 2292 backend = 0;
1712 backend_fd = -1; 2293 backend_fd = -1;
1713 sig_pending = 0; 2294 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2295#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2296 async_pending = 0;
1716#endif 2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
1717#if EV_USE_INOTIFY 2300#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2302#endif
1720#if EV_USE_SIGNALFD 2303#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2305#endif
1723 2306
1724 if (!(flags & EVBACKEND_MASK)) 2307 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1726 2309
… …
1751#endif 2334#endif
1752 } 2335 }
1753} 2336}
1754 2337
1755/* free up a loop structure */ 2338/* free up a loop structure */
1756void 2339void ecb_cold
1757ev_loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1758{ 2341{
1759 int i; 2342 int i;
1760 2343
1761#if EV_MULTIPLICITY 2344#if EV_MULTIPLICITY
… …
1772 EV_INVOKE_PENDING; 2355 EV_INVOKE_PENDING;
1773 } 2356 }
1774#endif 2357#endif
1775 2358
1776#if EV_CHILD_ENABLE 2359#if EV_CHILD_ENABLE
1777 if (ev_is_active (&childev)) 2360 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1778 { 2361 {
1779 ev_ref (EV_A); /* child watcher */ 2362 ev_ref (EV_A); /* child watcher */
1780 ev_signal_stop (EV_A_ &childev); 2363 ev_signal_stop (EV_A_ &childev);
1781 } 2364 }
1782#endif 2365#endif
… …
1891 infy_fork (EV_A); 2474 infy_fork (EV_A);
1892#endif 2475#endif
1893 2476
1894 if (ev_is_active (&pipe_w)) 2477 if (ev_is_active (&pipe_w))
1895 { 2478 {
1896 /* this "locks" the handlers against writing to the pipe */ 2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1897 /* while we modify the fd vars */
1898 sig_pending = 1;
1899#if EV_ASYNC_ENABLE
1900 async_pending = 1;
1901#endif
1902 2480
1903 ev_ref (EV_A); 2481 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 2482 ev_io_stop (EV_A_ &pipe_w);
1905 2483
1906#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
… …
1924 postfork = 0; 2502 postfork = 0;
1925} 2503}
1926 2504
1927#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1928 2506
1929struct ev_loop * 2507struct ev_loop * ecb_cold
1930ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1931{ 2509{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 2511
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
… …
1942} 2520}
1943 2521
1944#endif /* multiplicity */ 2522#endif /* multiplicity */
1945 2523
1946#if EV_VERIFY 2524#if EV_VERIFY
1947static void noinline 2525static void noinline ecb_cold
1948verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1949{ 2527{
1950 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));
1951 2529
1952 if (w->pending) 2530 if (w->pending)
1953 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));
1954} 2532}
1955 2533
1956static void noinline 2534static void noinline ecb_cold
1957verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1958{ 2536{
1959 int i; 2537 int i;
1960 2538
1961 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 2544
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 2546 }
1969} 2547}
1970 2548
1971static void noinline 2549static void noinline ecb_cold
1972array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1973{ 2551{
1974 while (cnt--) 2552 while (cnt--)
1975 { 2553 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 2556 }
1979} 2557}
1980#endif 2558#endif
1981 2559
1982#if EV_FEATURE_API 2560#if EV_FEATURE_API
1983void 2561void ecb_cold
1984ev_verify (EV_P) 2562ev_verify (EV_P) EV_THROW
1985{ 2563{
1986#if EV_VERIFY 2564#if EV_VERIFY
1987 int i; 2565 int i;
1988 WL w; 2566 WL w, w2;
1989 2567
1990 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
1991 2569
1992 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
1993 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
1994 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1995 2573
1996 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
1997 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
1998 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1999 { 2580 {
2000 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
2001 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));
2002 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));
2003 } 2591 }
2592 }
2004 2593
2005 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
2006 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
2007 2596
2008#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
2054#endif 2643#endif
2055} 2644}
2056#endif 2645#endif
2057 2646
2058#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
2059struct ev_loop * 2648struct ev_loop * ecb_cold
2060#else 2649#else
2061int 2650int
2062#endif 2651#endif
2063ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
2064{ 2653{
2065 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
2066 { 2655 {
2067#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 2676
2088 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
2089} 2678}
2090 2679
2091void 2680void
2092ev_loop_fork (EV_P) 2681ev_loop_fork (EV_P) EV_THROW
2093{ 2682{
2094 postfork = 1; /* must be in line with ev_default_fork */ 2683 postfork = 1; /* must be in line with ev_default_fork */
2095} 2684}
2096 2685
2097/*****************************************************************************/ 2686/*****************************************************************************/
… …
2101{ 2690{
2102 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
2103} 2692}
2104 2693
2105unsigned int 2694unsigned int
2106ev_pending_count (EV_P) 2695ev_pending_count (EV_P) EV_THROW
2107{ 2696{
2108 int pri; 2697 int pri;
2109 unsigned int count = 0; 2698 unsigned int count = 0;
2110 2699
2111 for (pri = NUMPRI; pri--; ) 2700 for (pri = NUMPRI; pri--; )
… …
2115} 2704}
2116 2705
2117void noinline 2706void noinline
2118ev_invoke_pending (EV_P) 2707ev_invoke_pending (EV_P)
2119{ 2708{
2120 int pri; 2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2121
2122 for (pri = NUMPRI; pri--; )
2123 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
2124 { 2711 {
2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2126 2713
2127 p->w->pending = 0; 2714 p->w->pending = 0;
2128 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
2129 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
2130 } 2717 }
… …
2193 } 2780 }
2194} 2781}
2195 2782
2196#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
2197 2784
2198inline_speed 2785static void noinline
2199periodic_recalc (EV_P_ ev_periodic *w) 2786periodic_recalc (EV_P_ ev_periodic *w)
2200{ 2787{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2203 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;
2204} 2807}
2205 2808
2206/* make periodics pending */ 2809/* make periodics pending */
2207inline_size void 2810inline_size void
2208periodics_reify (EV_P) 2811periodics_reify (EV_P)
2209{ 2812{
2210 EV_FREQUENT_CHECK; 2813 EV_FREQUENT_CHECK;
2211 2814
2212 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2213 { 2816 {
2214 int feed_count = 0;
2215
2216 do 2817 do
2217 { 2818 {
2218 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2819 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2219 2820
2220 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2821 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2230 downheap (periodics, periodiccnt, HEAP0); 2831 downheap (periodics, periodiccnt, HEAP0);
2231 } 2832 }
2232 else if (w->interval) 2833 else if (w->interval)
2233 { 2834 {
2234 periodic_recalc (EV_A_ w); 2835 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]); 2836 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 2837 downheap (periodics, periodiccnt, HEAP0);
2251 } 2838 }
2252 else 2839 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2840 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 2848 }
2262} 2849}
2263 2850
2264/* simply recalculate all periodics */ 2851/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2852/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 2853static void noinline ecb_cold
2267periodics_reschedule (EV_P) 2854periodics_reschedule (EV_P)
2268{ 2855{
2269 int i; 2856 int i;
2270 2857
2271 /* adjust periodics after time jump */ 2858 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 2871 reheap (periodics, periodiccnt);
2285} 2872}
2286#endif 2873#endif
2287 2874
2288/* adjust all timers by a given offset */ 2875/* adjust all timers by a given offset */
2289static void noinline 2876static void noinline ecb_cold
2290timers_reschedule (EV_P_ ev_tstamp adjust) 2877timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 2878{
2292 int i; 2879 int i;
2293 2880
2294 for (i = 0; i < timercnt; ++i) 2881 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 2918 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 2919 * in the unlikely event of having been preempted here.
2333 */ 2920 */
2334 for (i = 4; --i; ) 2921 for (i = 4; --i; )
2335 { 2922 {
2923 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 2924 rtmn_diff = ev_rt_now - mn_now;
2337 2925
2926 diff = odiff - rtmn_diff;
2927
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2928 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 2929 return; /* all is well */
2340 2930
2341 ev_rt_now = ev_time (); 2931 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 2932 mn_now = get_clock ();
2343 now_floor = mn_now; 2933 now_floor = mn_now;
… …
2365 2955
2366 mn_now = ev_rt_now; 2956 mn_now = ev_rt_now;
2367 } 2957 }
2368} 2958}
2369 2959
2370void 2960int
2371ev_run (EV_P_ int flags) 2961ev_run (EV_P_ int flags)
2372{ 2962{
2373#if EV_FEATURE_API 2963#if EV_FEATURE_API
2374 ++loop_depth; 2964 ++loop_depth;
2375#endif 2965#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3023 ev_tstamp prev_mn_now = mn_now;
2434 3024
2435 /* update time to cancel out callback processing overhead */ 3025 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3026 time_update (EV_A_ 1e100);
2437 3027
3028 /* from now on, we want a pipe-wake-up */
3029 pipe_write_wanted = 1;
3030
3031 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3032
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3033 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3034 {
2440 waittime = MAX_BLOCKTIME; 3035 waittime = MAX_BLOCKTIME;
2441 3036
2442 if (timercnt) 3037 if (timercnt)
2443 { 3038 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3039 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3040 if (waittime > to) waittime = to;
2446 } 3041 }
2447 3042
2448#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3044 if (periodiccnt)
2450 { 3045 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3046 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3047 if (waittime > to) waittime = to;
2453 } 3048 }
2454#endif 3049#endif
2455 3050
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3051 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3052 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3053 waittime = timeout_blocktime;
3054
3055 /* at this point, we NEED to wait, so we have to ensure */
3056 /* to pass a minimum nonzero value to the backend */
3057 if (expect_false (waittime < backend_mintime))
3058 waittime = backend_mintime;
2459 3059
2460 /* extra check because io_blocktime is commonly 0 */ 3060 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3061 if (expect_false (io_blocktime))
2462 { 3062 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3063 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3064
2465 if (sleeptime > waittime - backend_fudge) 3065 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3066 sleeptime = waittime - backend_mintime;
2467 3067
2468 if (expect_true (sleeptime > 0.)) 3068 if (expect_true (sleeptime > 0.))
2469 { 3069 {
2470 ev_sleep (sleeptime); 3070 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3071 waittime -= sleeptime;
… …
2478#endif 3078#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3079 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3080 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3081 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3082
3083 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3084
3085 if (pipe_write_skipped)
3086 {
3087 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3089 }
3090
3091
2483 /* update ev_rt_now, do magic */ 3092 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3093 time_update (EV_A_ waittime + sleeptime);
2485 } 3094 }
2486 3095
2487 /* queue pending timers and reschedule them */ 3096 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3122 loop_done = EVBREAK_CANCEL;
2514 3123
2515#if EV_FEATURE_API 3124#if EV_FEATURE_API
2516 --loop_depth; 3125 --loop_depth;
2517#endif 3126#endif
3127
3128 return activecnt;
2518} 3129}
2519 3130
2520void 3131void
2521ev_break (EV_P_ int how) 3132ev_break (EV_P_ int how) EV_THROW
2522{ 3133{
2523 loop_done = how; 3134 loop_done = how;
2524} 3135}
2525 3136
2526void 3137void
2527ev_ref (EV_P) 3138ev_ref (EV_P) EV_THROW
2528{ 3139{
2529 ++activecnt; 3140 ++activecnt;
2530} 3141}
2531 3142
2532void 3143void
2533ev_unref (EV_P) 3144ev_unref (EV_P) EV_THROW
2534{ 3145{
2535 --activecnt; 3146 --activecnt;
2536} 3147}
2537 3148
2538void 3149void
2539ev_now_update (EV_P) 3150ev_now_update (EV_P) EV_THROW
2540{ 3151{
2541 time_update (EV_A_ 1e100); 3152 time_update (EV_A_ 1e100);
2542} 3153}
2543 3154
2544void 3155void
2545ev_suspend (EV_P) 3156ev_suspend (EV_P) EV_THROW
2546{ 3157{
2547 ev_now_update (EV_A); 3158 ev_now_update (EV_A);
2548} 3159}
2549 3160
2550void 3161void
2551ev_resume (EV_P) 3162ev_resume (EV_P) EV_THROW
2552{ 3163{
2553 ev_tstamp mn_prev = mn_now; 3164 ev_tstamp mn_prev = mn_now;
2554 3165
2555 ev_now_update (EV_A); 3166 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3167 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3206 w->pending = 0;
2596 } 3207 }
2597} 3208}
2598 3209
2599int 3210int
2600ev_clear_pending (EV_P_ void *w) 3211ev_clear_pending (EV_P_ void *w) EV_THROW
2601{ 3212{
2602 W w_ = (W)w; 3213 W w_ = (W)w;
2603 int pending = w_->pending; 3214 int pending = w_->pending;
2604 3215
2605 if (expect_true (pending)) 3216 if (expect_true (pending))
… …
2638} 3249}
2639 3250
2640/*****************************************************************************/ 3251/*****************************************************************************/
2641 3252
2642void noinline 3253void noinline
2643ev_io_start (EV_P_ ev_io *w) 3254ev_io_start (EV_P_ ev_io *w) EV_THROW
2644{ 3255{
2645 int fd = w->fd; 3256 int fd = w->fd;
2646 3257
2647 if (expect_false (ev_is_active (w))) 3258 if (expect_false (ev_is_active (w)))
2648 return; 3259 return;
… …
2654 3265
2655 ev_start (EV_A_ (W)w, 1); 3266 ev_start (EV_A_ (W)w, 1);
2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3267 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2657 wlist_add (&anfds[fd].head, (WL)w); 3268 wlist_add (&anfds[fd].head, (WL)w);
2658 3269
3270 /* common bug, apparently */
3271 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3272
2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3273 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2660 w->events &= ~EV__IOFDSET; 3274 w->events &= ~EV__IOFDSET;
2661 3275
2662 EV_FREQUENT_CHECK; 3276 EV_FREQUENT_CHECK;
2663} 3277}
2664 3278
2665void noinline 3279void noinline
2666ev_io_stop (EV_P_ ev_io *w) 3280ev_io_stop (EV_P_ ev_io *w) EV_THROW
2667{ 3281{
2668 clear_pending (EV_A_ (W)w); 3282 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3283 if (expect_false (!ev_is_active (w)))
2670 return; 3284 return;
2671 3285
… …
2680 3294
2681 EV_FREQUENT_CHECK; 3295 EV_FREQUENT_CHECK;
2682} 3296}
2683 3297
2684void noinline 3298void noinline
2685ev_timer_start (EV_P_ ev_timer *w) 3299ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2686{ 3300{
2687 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2688 return; 3302 return;
2689 3303
2690 ev_at (w) += mn_now; 3304 ev_at (w) += mn_now;
… …
2704 3318
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3319 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3320}
2707 3321
2708void noinline 3322void noinline
2709ev_timer_stop (EV_P_ ev_timer *w) 3323ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2710{ 3324{
2711 clear_pending (EV_A_ (W)w); 3325 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3326 if (expect_false (!ev_is_active (w)))
2713 return; 3327 return;
2714 3328
… …
2734 3348
2735 EV_FREQUENT_CHECK; 3349 EV_FREQUENT_CHECK;
2736} 3350}
2737 3351
2738void noinline 3352void noinline
2739ev_timer_again (EV_P_ ev_timer *w) 3353ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2740{ 3354{
2741 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
3356
3357 clear_pending (EV_A_ (W)w);
2742 3358
2743 if (ev_is_active (w)) 3359 if (ev_is_active (w))
2744 { 3360 {
2745 if (w->repeat) 3361 if (w->repeat)
2746 { 3362 {
… …
2759 3375
2760 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2761} 3377}
2762 3378
2763ev_tstamp 3379ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 3380ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2765{ 3381{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3382 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 3383}
2768 3384
2769#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
2770void noinline 3386void noinline
2771ev_periodic_start (EV_P_ ev_periodic *w) 3387ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2772{ 3388{
2773 if (expect_false (ev_is_active (w))) 3389 if (expect_false (ev_is_active (w)))
2774 return; 3390 return;
2775 3391
2776 if (w->reschedule_cb) 3392 if (w->reschedule_cb)
… …
2796 3412
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3413 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 3414}
2799 3415
2800void noinline 3416void noinline
2801ev_periodic_stop (EV_P_ ev_periodic *w) 3417ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2802{ 3418{
2803 clear_pending (EV_A_ (W)w); 3419 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 3420 if (expect_false (!ev_is_active (w)))
2805 return; 3421 return;
2806 3422
… …
2824 3440
2825 EV_FREQUENT_CHECK; 3441 EV_FREQUENT_CHECK;
2826} 3442}
2827 3443
2828void noinline 3444void noinline
2829ev_periodic_again (EV_P_ ev_periodic *w) 3445ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2830{ 3446{
2831 /* TODO: use adjustheap and recalculation */ 3447 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 3448 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 3449 ev_periodic_start (EV_A_ w);
2834} 3450}
… …
2839#endif 3455#endif
2840 3456
2841#if EV_SIGNAL_ENABLE 3457#if EV_SIGNAL_ENABLE
2842 3458
2843void noinline 3459void noinline
2844ev_signal_start (EV_P_ ev_signal *w) 3460ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2845{ 3461{
2846 if (expect_false (ev_is_active (w))) 3462 if (expect_false (ev_is_active (w)))
2847 return; 3463 return;
2848 3464
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2920 3536
2921 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2922} 3538}
2923 3539
2924void noinline 3540void noinline
2925ev_signal_stop (EV_P_ ev_signal *w) 3541ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2926{ 3542{
2927 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2929 return; 3545 return;
2930 3546
… …
2961#endif 3577#endif
2962 3578
2963#if EV_CHILD_ENABLE 3579#if EV_CHILD_ENABLE
2964 3580
2965void 3581void
2966ev_child_start (EV_P_ ev_child *w) 3582ev_child_start (EV_P_ ev_child *w) EV_THROW
2967{ 3583{
2968#if EV_MULTIPLICITY 3584#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3585 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 3586#endif
2971 if (expect_false (ev_is_active (w))) 3587 if (expect_false (ev_is_active (w)))
… …
2978 3594
2979 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2980} 3596}
2981 3597
2982void 3598void
2983ev_child_stop (EV_P_ ev_child *w) 3599ev_child_stop (EV_P_ ev_child *w) EV_THROW
2984{ 3600{
2985 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2987 return; 3603 return;
2988 3604
… …
3063 if (!pend || pend == path) 3679 if (!pend || pend == path)
3064 break; 3680 break;
3065 3681
3066 *pend = 0; 3682 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 3683 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 3684 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3685 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 3686 }
3071 } 3687 }
3072 3688
3073 if (w->wd >= 0) 3689 if (w->wd >= 0)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3756 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 3757 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 3758 }
3143} 3759}
3144 3760
3145inline_size void 3761inline_size void ecb_cold
3146ev_check_2625 (EV_P) 3762ev_check_2625 (EV_P)
3147{ 3763{
3148 /* kernels < 2.6.25 are borked 3764 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3765 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 3766 */
… …
3155} 3771}
3156 3772
3157inline_size int 3773inline_size int
3158infy_newfd (void) 3774infy_newfd (void)
3159{ 3775{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3776#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3777 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 3778 if (fd >= 0)
3163 return fd; 3779 return fd;
3164#endif 3780#endif
3165 return inotify_init (); 3781 return inotify_init ();
… …
3240#else 3856#else
3241# define EV_LSTAT(p,b) lstat (p, b) 3857# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 3858#endif
3243 3859
3244void 3860void
3245ev_stat_stat (EV_P_ ev_stat *w) 3861ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3246{ 3862{
3247 if (lstat (w->path, &w->attr) < 0) 3863 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 3864 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 3865 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 3866 w->attr.st_nlink = 1;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 3905 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 3906 }
3291} 3907}
3292 3908
3293void 3909void
3294ev_stat_start (EV_P_ ev_stat *w) 3910ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3295{ 3911{
3296 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
3297 return; 3913 return;
3298 3914
3299 ev_stat_stat (EV_A_ w); 3915 ev_stat_stat (EV_A_ w);
… …
3320 3936
3321 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
3322} 3938}
3323 3939
3324void 3940void
3325ev_stat_stop (EV_P_ ev_stat *w) 3941ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3326{ 3942{
3327 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
3329 return; 3945 return;
3330 3946
… …
3346} 3962}
3347#endif 3963#endif
3348 3964
3349#if EV_IDLE_ENABLE 3965#if EV_IDLE_ENABLE
3350void 3966void
3351ev_idle_start (EV_P_ ev_idle *w) 3967ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3352{ 3968{
3353 if (expect_false (ev_is_active (w))) 3969 if (expect_false (ev_is_active (w)))
3354 return; 3970 return;
3355 3971
3356 pri_adjust (EV_A_ (W)w); 3972 pri_adjust (EV_A_ (W)w);
… …
3369 3985
3370 EV_FREQUENT_CHECK; 3986 EV_FREQUENT_CHECK;
3371} 3987}
3372 3988
3373void 3989void
3374ev_idle_stop (EV_P_ ev_idle *w) 3990ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3375{ 3991{
3376 clear_pending (EV_A_ (W)w); 3992 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 3993 if (expect_false (!ev_is_active (w)))
3378 return; 3994 return;
3379 3995
… …
3393} 4009}
3394#endif 4010#endif
3395 4011
3396#if EV_PREPARE_ENABLE 4012#if EV_PREPARE_ENABLE
3397void 4013void
3398ev_prepare_start (EV_P_ ev_prepare *w) 4014ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3399{ 4015{
3400 if (expect_false (ev_is_active (w))) 4016 if (expect_false (ev_is_active (w)))
3401 return; 4017 return;
3402 4018
3403 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
… …
3408 4024
3409 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
3410} 4026}
3411 4027
3412void 4028void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4029ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3414{ 4030{
3415 clear_pending (EV_A_ (W)w); 4031 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4032 if (expect_false (!ev_is_active (w)))
3417 return; 4033 return;
3418 4034
… …
3431} 4047}
3432#endif 4048#endif
3433 4049
3434#if EV_CHECK_ENABLE 4050#if EV_CHECK_ENABLE
3435void 4051void
3436ev_check_start (EV_P_ ev_check *w) 4052ev_check_start (EV_P_ ev_check *w) EV_THROW
3437{ 4053{
3438 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
3439 return; 4055 return;
3440 4056
3441 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
… …
3446 4062
3447 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3448} 4064}
3449 4065
3450void 4066void
3451ev_check_stop (EV_P_ ev_check *w) 4067ev_check_stop (EV_P_ ev_check *w) EV_THROW
3452{ 4068{
3453 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4070 if (expect_false (!ev_is_active (w)))
3455 return; 4071 return;
3456 4072
… …
3469} 4085}
3470#endif 4086#endif
3471 4087
3472#if EV_EMBED_ENABLE 4088#if EV_EMBED_ENABLE
3473void noinline 4089void noinline
3474ev_embed_sweep (EV_P_ ev_embed *w) 4090ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3475{ 4091{
3476 ev_run (w->other, EVRUN_NOWAIT); 4092 ev_run (w->other, EVRUN_NOWAIT);
3477} 4093}
3478 4094
3479static void 4095static void
… …
3527 ev_idle_stop (EV_A_ idle); 4143 ev_idle_stop (EV_A_ idle);
3528} 4144}
3529#endif 4145#endif
3530 4146
3531void 4147void
3532ev_embed_start (EV_P_ ev_embed *w) 4148ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3533{ 4149{
3534 if (expect_false (ev_is_active (w))) 4150 if (expect_false (ev_is_active (w)))
3535 return; 4151 return;
3536 4152
3537 { 4153 {
… …
3558 4174
3559 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
3560} 4176}
3561 4177
3562void 4178void
3563ev_embed_stop (EV_P_ ev_embed *w) 4179ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3564{ 4180{
3565 clear_pending (EV_A_ (W)w); 4181 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4182 if (expect_false (!ev_is_active (w)))
3567 return; 4183 return;
3568 4184
… …
3578} 4194}
3579#endif 4195#endif
3580 4196
3581#if EV_FORK_ENABLE 4197#if EV_FORK_ENABLE
3582void 4198void
3583ev_fork_start (EV_P_ ev_fork *w) 4199ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3584{ 4200{
3585 if (expect_false (ev_is_active (w))) 4201 if (expect_false (ev_is_active (w)))
3586 return; 4202 return;
3587 4203
3588 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
… …
3593 4209
3594 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
3595} 4211}
3596 4212
3597void 4213void
3598ev_fork_stop (EV_P_ ev_fork *w) 4214ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3599{ 4215{
3600 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
3602 return; 4218 return;
3603 4219
… …
3616} 4232}
3617#endif 4233#endif
3618 4234
3619#if EV_CLEANUP_ENABLE 4235#if EV_CLEANUP_ENABLE
3620void 4236void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4237ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4238{
3623 if (expect_false (ev_is_active (w))) 4239 if (expect_false (ev_is_active (w)))
3624 return; 4240 return;
3625 4241
3626 EV_FREQUENT_CHECK; 4242 EV_FREQUENT_CHECK;
… …
3633 ev_unref (EV_A); 4249 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4250 EV_FREQUENT_CHECK;
3635} 4251}
3636 4252
3637void 4253void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4254ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3639{ 4255{
3640 clear_pending (EV_A_ (W)w); 4256 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4257 if (expect_false (!ev_is_active (w)))
3642 return; 4258 return;
3643 4259
… …
3657} 4273}
3658#endif 4274#endif
3659 4275
3660#if EV_ASYNC_ENABLE 4276#if EV_ASYNC_ENABLE
3661void 4277void
3662ev_async_start (EV_P_ ev_async *w) 4278ev_async_start (EV_P_ ev_async *w) EV_THROW
3663{ 4279{
3664 if (expect_false (ev_is_active (w))) 4280 if (expect_false (ev_is_active (w)))
3665 return; 4281 return;
3666 4282
3667 w->sent = 0; 4283 w->sent = 0;
… …
3676 4292
3677 EV_FREQUENT_CHECK; 4293 EV_FREQUENT_CHECK;
3678} 4294}
3679 4295
3680void 4296void
3681ev_async_stop (EV_P_ ev_async *w) 4297ev_async_stop (EV_P_ ev_async *w) EV_THROW
3682{ 4298{
3683 clear_pending (EV_A_ (W)w); 4299 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4300 if (expect_false (!ev_is_active (w)))
3685 return; 4301 return;
3686 4302
… …
3697 4313
3698 EV_FREQUENT_CHECK; 4314 EV_FREQUENT_CHECK;
3699} 4315}
3700 4316
3701void 4317void
3702ev_async_send (EV_P_ ev_async *w) 4318ev_async_send (EV_P_ ev_async *w) EV_THROW
3703{ 4319{
3704 w->sent = 1; 4320 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 4321 evpipe_write (EV_A_ &async_pending);
3706} 4322}
3707#endif 4323#endif
… …
3744 4360
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4361 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 4362}
3747 4363
3748void 4364void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4365ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3750{ 4366{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4367 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752 4368
3753 if (expect_false (!once)) 4369 if (expect_false (!once))
3754 { 4370 {
… …
3775} 4391}
3776 4392
3777/*****************************************************************************/ 4393/*****************************************************************************/
3778 4394
3779#if EV_WALK_ENABLE 4395#if EV_WALK_ENABLE
3780void 4396void ecb_cold
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4397ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3782{ 4398{
3783 int i, j; 4399 int i, j;
3784 ev_watcher_list *wl, *wn; 4400 ev_watcher_list *wl, *wn;
3785 4401
3786 if (types & (EV_IO | EV_EMBED)) 4402 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4445 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 4446#endif
3831 4447
3832#if EV_IDLE_ENABLE 4448#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 4449 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 4450 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 4451 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 4452 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 4453#endif
3838 4454
3839#if EV_FORK_ENABLE 4455#if EV_FORK_ENABLE
… …
3892 4508
3893#if EV_MULTIPLICITY 4509#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 4510 #include "ev_wrap.h"
3895#endif 4511#endif
3896 4512
3897EV_CPP(})
3898

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