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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.428 by root, Tue May 8 15:44:09 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
194# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
199#endif 212#endif
200 213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
201/* 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 */
202 223
203/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 225#if defined EV_NSIG
205/* use what's provided */ 226/* use what's provided */
206#elif defined (NSIG) 227#elif defined NSIG
207# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 229#elif defined _NSIG
209# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 231#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 233#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 237#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 239#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 243#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 245#else
225# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
226/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
228# define EV_NSIG 65 249# define EV_NSIG 65
229#endif 250#endif
230 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
231#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 259# else
235# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
236# endif 261# endif
237#endif 262#endif
238 263
239#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 267# else
243# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
244# endif 269# endif
245#endif 270#endif
… …
335#endif 360#endif
336 361
337/* 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, */
338/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 365# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
345# else 370# else
… …
370# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
372#endif 397#endif
373 398
374#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 402# include <sys/select.h>
377# endif 403# endif
378#endif 404#endif
379 405
380#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 407# include <sys/statfs.h>
383# include <sys/inotify.h> 408# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
… …
403# define EFD_CLOEXEC O_CLOEXEC 428# define EFD_CLOEXEC O_CLOEXEC
404# else 429# else
405# define EFD_CLOEXEC 02000000 430# define EFD_CLOEXEC 02000000
406# endif 431# endif
407# endif 432# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 433EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 434#endif
416 435
417#if EV_USE_SIGNALFD 436#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 437/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 438# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 444# define SFD_CLOEXEC O_CLOEXEC
426# else 445# else
427# define SFD_CLOEXEC 02000000 446# define SFD_CLOEXEC 02000000
428# endif 447# endif
429# endif 448# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 449EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 450
435struct signalfd_siginfo 451struct signalfd_siginfo
436{ 452{
437 uint32_t ssi_signo; 453 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 454 char pad[128 - sizeof (uint32_t)];
439}; 455};
440# ifdef __cplusplus
441}
442# endif 456#endif
443#endif
444
445 457
446/**/ 458/**/
447 459
448#if EV_VERIFY >= 3 460#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 461# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 462#else
451# define EV_FREQUENT_CHECK do { } while (0) 463# define EV_FREQUENT_CHECK do { } while (0)
452#endif 464#endif
453 465
454/* 466/*
455 * This is used to avoid floating point rounding problems. 467 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 468 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 469 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
471/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 472
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 473#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 474#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 475
476#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
477#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
478
479/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
480/* ECB.H BEGIN */
481/*
482 * libecb - http://software.schmorp.de/pkg/libecb
483 *
484 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
485 * Copyright (©) 2011 Emanuele Giaquinta
486 * All rights reserved.
487 *
488 * Redistribution and use in source and binary forms, with or without modifica-
489 * tion, are permitted provided that the following conditions are met:
490 *
491 * 1. Redistributions of source code must retain the above copyright notice,
492 * this list of conditions and the following disclaimer.
493 *
494 * 2. Redistributions in binary form must reproduce the above copyright
495 * notice, this list of conditions and the following disclaimer in the
496 * documentation and/or other materials provided with the distribution.
497 *
498 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
499 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
500 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
501 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
502 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
503 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
504 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
505 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
506 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
507 * OF THE POSSIBILITY OF SUCH DAMAGE.
508 */
509
510#ifndef ECB_H
511#define ECB_H
512
513#ifdef _WIN32
514 typedef signed char int8_t;
515 typedef unsigned char uint8_t;
516 typedef signed short int16_t;
517 typedef unsigned short uint16_t;
518 typedef signed int int32_t;
519 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 520 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 521 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 522 typedef unsigned long long uint64_t;
523 #else /* _MSC_VER || __BORLANDC__ */
524 typedef signed __int64 int64_t;
525 typedef unsigned __int64 uint64_t;
526 #endif
470#else 527#else
471# define expect(expr,value) (expr) 528 #include <inttypes.h>
472# define noinline
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474# define inline
475# endif 529#endif
530
531/* many compilers define _GNUC_ to some versions but then only implement
532 * what their idiot authors think are the "more important" extensions,
533 * causing enormous grief in return for some better fake benchmark numbers.
534 * or so.
535 * we try to detect these and simply assume they are not gcc - if they have
536 * an issue with that they should have done it right in the first place.
537 */
538#ifndef ECB_GCC_VERSION
539 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
540 #define ECB_GCC_VERSION(major,minor) 0
541 #else
542 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
476#endif 543 #endif
544#endif
477 545
546/*****************************************************************************/
547
548/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
549/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
550
551#if ECB_NO_THREADS
552# define ECB_NO_SMP 1
553#endif
554
555#if ECB_NO_THREADS || ECB_NO_SMP
556 #define ECB_MEMORY_FENCE do { } while (0)
557#endif
558
559#ifndef ECB_MEMORY_FENCE
560 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
561 #if __i386 || __i386__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
564 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
565 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
568 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
569 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
570 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
571 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
572 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
573 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
574 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
575 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
576 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
577 #elif __sparc || __sparc__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
579 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
580 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
581 #elif defined __s390__ || defined __s390x__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
583 #elif defined __mips__
584 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
585 #elif defined __alpha__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
587 #endif
588 #endif
589#endif
590
591#ifndef ECB_MEMORY_FENCE
592 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
593 #define ECB_MEMORY_FENCE __sync_synchronize ()
594 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
595 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
596 #elif _MSC_VER >= 1400 /* VC++ 2005 */
597 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
598 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
599 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
600 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
601 #elif defined _WIN32
602 #include <WinNT.h>
603 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
604 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
605 #include <mbarrier.h>
606 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
607 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
608 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
609 #elif __xlC__
610 #define ECB_MEMORY_FENCE __sync ()
611 #endif
612#endif
613
614#ifndef ECB_MEMORY_FENCE
615 #if !ECB_AVOID_PTHREADS
616 /*
617 * if you get undefined symbol references to pthread_mutex_lock,
618 * or failure to find pthread.h, then you should implement
619 * the ECB_MEMORY_FENCE operations for your cpu/compiler
620 * OR provide pthread.h and link against the posix thread library
621 * of your system.
622 */
623 #include <pthread.h>
624 #define ECB_NEEDS_PTHREADS 1
625 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
626
627 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
628 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
629 #endif
630#endif
631
632#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
634#endif
635
636#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
637 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
638#endif
639
640/*****************************************************************************/
641
642#define ECB_C99 (__STDC_VERSION__ >= 199901L)
643
644#if __cplusplus
645 #define ecb_inline static inline
646#elif ECB_GCC_VERSION(2,5)
647 #define ecb_inline static __inline__
648#elif ECB_C99
649 #define ecb_inline static inline
650#else
651 #define ecb_inline static
652#endif
653
654#if ECB_GCC_VERSION(3,3)
655 #define ecb_restrict __restrict__
656#elif ECB_C99
657 #define ecb_restrict restrict
658#else
659 #define ecb_restrict
660#endif
661
662typedef int ecb_bool;
663
664#define ECB_CONCAT_(a, b) a ## b
665#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
666#define ECB_STRINGIFY_(a) # a
667#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
668
669#define ecb_function_ ecb_inline
670
671#if ECB_GCC_VERSION(3,1)
672 #define ecb_attribute(attrlist) __attribute__(attrlist)
673 #define ecb_is_constant(expr) __builtin_constant_p (expr)
674 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
675 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
676#else
677 #define ecb_attribute(attrlist)
678 #define ecb_is_constant(expr) 0
679 #define ecb_expect(expr,value) (expr)
680 #define ecb_prefetch(addr,rw,locality)
681#endif
682
683/* no emulation for ecb_decltype */
684#if ECB_GCC_VERSION(4,5)
685 #define ecb_decltype(x) __decltype(x)
686#elif ECB_GCC_VERSION(3,0)
687 #define ecb_decltype(x) __typeof(x)
688#endif
689
690#define ecb_noinline ecb_attribute ((__noinline__))
691#define ecb_noreturn ecb_attribute ((__noreturn__))
692#define ecb_unused ecb_attribute ((__unused__))
693#define ecb_const ecb_attribute ((__const__))
694#define ecb_pure ecb_attribute ((__pure__))
695
696#if ECB_GCC_VERSION(4,3)
697 #define ecb_artificial ecb_attribute ((__artificial__))
698 #define ecb_hot ecb_attribute ((__hot__))
699 #define ecb_cold ecb_attribute ((__cold__))
700#else
701 #define ecb_artificial
702 #define ecb_hot
703 #define ecb_cold
704#endif
705
706/* put around conditional expressions if you are very sure that the */
707/* expression is mostly true or mostly false. note that these return */
708/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 709#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 710#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
711/* for compatibility to the rest of the world */
712#define ecb_likely(expr) ecb_expect_true (expr)
713#define ecb_unlikely(expr) ecb_expect_false (expr)
714
715/* count trailing zero bits and count # of one bits */
716#if ECB_GCC_VERSION(3,4)
717 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
718 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
719 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
720 #define ecb_ctz32(x) __builtin_ctz (x)
721 #define ecb_ctz64(x) __builtin_ctzll (x)
722 #define ecb_popcount32(x) __builtin_popcount (x)
723 /* no popcountll */
724#else
725 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_ctz32 (uint32_t x)
728 {
729 int r = 0;
730
731 x &= ~x + 1; /* this isolates the lowest bit */
732
733#if ECB_branchless_on_i386
734 r += !!(x & 0xaaaaaaaa) << 0;
735 r += !!(x & 0xcccccccc) << 1;
736 r += !!(x & 0xf0f0f0f0) << 2;
737 r += !!(x & 0xff00ff00) << 3;
738 r += !!(x & 0xffff0000) << 4;
739#else
740 if (x & 0xaaaaaaaa) r += 1;
741 if (x & 0xcccccccc) r += 2;
742 if (x & 0xf0f0f0f0) r += 4;
743 if (x & 0xff00ff00) r += 8;
744 if (x & 0xffff0000) r += 16;
745#endif
746
747 return r;
748 }
749
750 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
751 ecb_function_ int
752 ecb_ctz64 (uint64_t x)
753 {
754 int shift = x & 0xffffffffU ? 0 : 32;
755 return ecb_ctz32 (x >> shift) + shift;
756 }
757
758 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
759 ecb_function_ int
760 ecb_popcount32 (uint32_t x)
761 {
762 x -= (x >> 1) & 0x55555555;
763 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
764 x = ((x >> 4) + x) & 0x0f0f0f0f;
765 x *= 0x01010101;
766
767 return x >> 24;
768 }
769
770 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
771 ecb_function_ int ecb_ld32 (uint32_t x)
772 {
773 int r = 0;
774
775 if (x >> 16) { x >>= 16; r += 16; }
776 if (x >> 8) { x >>= 8; r += 8; }
777 if (x >> 4) { x >>= 4; r += 4; }
778 if (x >> 2) { x >>= 2; r += 2; }
779 if (x >> 1) { r += 1; }
780
781 return r;
782 }
783
784 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
785 ecb_function_ int ecb_ld64 (uint64_t x)
786 {
787 int r = 0;
788
789 if (x >> 32) { x >>= 32; r += 32; }
790
791 return r + ecb_ld32 (x);
792 }
793#endif
794
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
796ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
797{
798 return ( (x * 0x0802U & 0x22110U)
799 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
800}
801
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
803ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
804{
805 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
806 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
807 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
808 x = ( x >> 8 ) | ( x << 8);
809
810 return x;
811}
812
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
814ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
815{
816 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
817 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
818 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
819 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
820 x = ( x >> 16 ) | ( x << 16);
821
822 return x;
823}
824
825/* popcount64 is only available on 64 bit cpus as gcc builtin */
826/* so for this version we are lazy */
827ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
828ecb_function_ int
829ecb_popcount64 (uint64_t x)
830{
831 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
832}
833
834ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
841ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
842
843ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
844ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
845ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
846ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
847ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
848ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
849ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
850ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
851
852#if ECB_GCC_VERSION(4,3)
853 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
854 #define ecb_bswap32(x) __builtin_bswap32 (x)
855 #define ecb_bswap64(x) __builtin_bswap64 (x)
856#else
857 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
858 ecb_function_ uint16_t
859 ecb_bswap16 (uint16_t x)
860 {
861 return ecb_rotl16 (x, 8);
862 }
863
864 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
865 ecb_function_ uint32_t
866 ecb_bswap32 (uint32_t x)
867 {
868 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
869 }
870
871 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
872 ecb_function_ uint64_t
873 ecb_bswap64 (uint64_t x)
874 {
875 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
876 }
877#endif
878
879#if ECB_GCC_VERSION(4,5)
880 #define ecb_unreachable() __builtin_unreachable ()
881#else
882 /* this seems to work fine, but gcc always emits a warning for it :/ */
883 ecb_inline void ecb_unreachable (void) ecb_noreturn;
884 ecb_inline void ecb_unreachable (void) { }
885#endif
886
887/* try to tell the compiler that some condition is definitely true */
888#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
889
890ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
891ecb_inline unsigned char
892ecb_byteorder_helper (void)
893{
894 const uint32_t u = 0x11223344;
895 return *(unsigned char *)&u;
896}
897
898ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
899ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
900ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
901ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
902
903#if ECB_GCC_VERSION(3,0) || ECB_C99
904 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
905#else
906 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
907#endif
908
909#if __cplusplus
910 template<typename T>
911 static inline T ecb_div_rd (T val, T div)
912 {
913 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
914 }
915 template<typename T>
916 static inline T ecb_div_ru (T val, T div)
917 {
918 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
919 }
920#else
921 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
922 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
923#endif
924
925#if ecb_cplusplus_does_not_suck
926 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
927 template<typename T, int N>
928 static inline int ecb_array_length (const T (&arr)[N])
929 {
930 return N;
931 }
932#else
933 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
934#endif
935
936#endif
937
938/* ECB.H END */
939
940#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
941/* if your architecture doesn't need memory fences, e.g. because it is
942 * single-cpu/core, or if you use libev in a project that doesn't use libev
943 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
944 * libev, in which cases the memory fences become nops.
945 * alternatively, you can remove this #error and link against libpthread,
946 * which will then provide the memory fences.
947 */
948# error "memory fences not defined for your architecture, please report"
949#endif
950
951#ifndef ECB_MEMORY_FENCE
952# define ECB_MEMORY_FENCE do { } while (0)
953# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
954# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
955#endif
956
957#define expect_false(cond) ecb_expect_false (cond)
958#define expect_true(cond) ecb_expect_true (cond)
959#define noinline ecb_noinline
960
480#define inline_size static inline 961#define inline_size ecb_inline
481 962
482#if EV_FEATURE_CODE 963#if EV_FEATURE_CODE
483# define inline_speed static inline 964# define inline_speed ecb_inline
484#else 965#else
485# define inline_speed static noinline 966# define inline_speed static noinline
486#endif 967#endif
487 968
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 969#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 984#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 985#define ev_at(w) ((WT)(w))->at
505 986
506#if EV_USE_REALTIME 987#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 988/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 989/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 990static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 991#endif
511 992
512#if EV_USE_MONOTONIC 993#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 994static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1008# include "ev_win32.c"
528#endif 1009#endif
529 1010
530/*****************************************************************************/ 1011/*****************************************************************************/
531 1012
1013/* define a suitable floor function (only used by periodics atm) */
1014
1015#if EV_USE_FLOOR
1016# include <math.h>
1017# define ev_floor(v) floor (v)
1018#else
1019
1020#include <float.h>
1021
1022/* a floor() replacement function, should be independent of ev_tstamp type */
1023static ev_tstamp noinline
1024ev_floor (ev_tstamp v)
1025{
1026 /* the choice of shift factor is not terribly important */
1027#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1028 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1029#else
1030 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1031#endif
1032
1033 /* argument too large for an unsigned long? */
1034 if (expect_false (v >= shift))
1035 {
1036 ev_tstamp f;
1037
1038 if (v == v - 1.)
1039 return v; /* very large number */
1040
1041 f = shift * ev_floor (v * (1. / shift));
1042 return f + ev_floor (v - f);
1043 }
1044
1045 /* special treatment for negative args? */
1046 if (expect_false (v < 0.))
1047 {
1048 ev_tstamp f = -ev_floor (-v);
1049
1050 return f - (f == v ? 0 : 1);
1051 }
1052
1053 /* fits into an unsigned long */
1054 return (unsigned long)v;
1055}
1056
1057#endif
1058
1059/*****************************************************************************/
1060
1061#ifdef __linux
1062# include <sys/utsname.h>
1063#endif
1064
1065static unsigned int noinline ecb_cold
1066ev_linux_version (void)
1067{
1068#ifdef __linux
1069 unsigned int v = 0;
1070 struct utsname buf;
1071 int i;
1072 char *p = buf.release;
1073
1074 if (uname (&buf))
1075 return 0;
1076
1077 for (i = 3+1; --i; )
1078 {
1079 unsigned int c = 0;
1080
1081 for (;;)
1082 {
1083 if (*p >= '0' && *p <= '9')
1084 c = c * 10 + *p++ - '0';
1085 else
1086 {
1087 p += *p == '.';
1088 break;
1089 }
1090 }
1091
1092 v = (v << 8) | c;
1093 }
1094
1095 return v;
1096#else
1097 return 0;
1098#endif
1099}
1100
1101/*****************************************************************************/
1102
532#if EV_AVOID_STDIO 1103#if EV_AVOID_STDIO
533static void noinline 1104static void noinline ecb_cold
534ev_printerr (const char *msg) 1105ev_printerr (const char *msg)
535{ 1106{
536 write (STDERR_FILENO, msg, strlen (msg)); 1107 write (STDERR_FILENO, msg, strlen (msg));
537} 1108}
538#endif 1109#endif
539 1110
540static void (*syserr_cb)(const char *msg); 1111static void (*syserr_cb)(const char *msg) EV_THROW;
541 1112
542void 1113void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1114ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
544{ 1115{
545 syserr_cb = cb; 1116 syserr_cb = cb;
546} 1117}
547 1118
548static void noinline 1119static void noinline ecb_cold
549ev_syserr (const char *msg) 1120ev_syserr (const char *msg)
550{ 1121{
551 if (!msg) 1122 if (!msg)
552 msg = "(libev) system error"; 1123 msg = "(libev) system error";
553 1124
554 if (syserr_cb) 1125 if (syserr_cb)
555 syserr_cb (msg); 1126 syserr_cb (msg);
556 else 1127 else
557 { 1128 {
558#if EV_AVOID_STDIO 1129#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1130 ev_printerr (msg);
562 ev_printerr (": "); 1131 ev_printerr (": ");
563 ev_printerr (err); 1132 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1133 ev_printerr ("\n");
565#else 1134#else
566 perror (msg); 1135 perror (msg);
567#endif 1136#endif
568 abort (); 1137 abort ();
… …
586 free (ptr); 1155 free (ptr);
587 return 0; 1156 return 0;
588#endif 1157#endif
589} 1158}
590 1159
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1160static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
592 1161
593void 1162void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1163ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
595{ 1164{
596 alloc = cb; 1165 alloc = cb;
597} 1166}
598 1167
599inline_speed void * 1168inline_speed void *
… …
602 ptr = alloc (ptr, size); 1171 ptr = alloc (ptr, size);
603 1172
604 if (!ptr && size) 1173 if (!ptr && size)
605 { 1174 {
606#if EV_AVOID_STDIO 1175#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1176 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1177#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1178 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1179#endif
611 abort (); 1180 abort ();
612 } 1181 }
613 1182
614 return ptr; 1183 return ptr;
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1200 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 1201 unsigned char unused;
633#if EV_USE_EPOLL 1202#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1203 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1204#endif
636#if EV_SELECT_IS_WINSOCKET 1205#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1206 SOCKET handle;
1207#endif
1208#if EV_USE_IOCP
1209 OVERLAPPED or, ow;
638#endif 1210#endif
639} ANFD; 1211} ANFD;
640 1212
641/* stores the pending event set for a given watcher */ 1213/* stores the pending event set for a given watcher */
642typedef struct 1214typedef struct
… …
684 #undef VAR 1256 #undef VAR
685 }; 1257 };
686 #include "ev_wrap.h" 1258 #include "ev_wrap.h"
687 1259
688 static struct ev_loop default_loop_struct; 1260 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1261 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1262
691#else 1263#else
692 1264
693 ev_tstamp ev_rt_now; 1265 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1266 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1267 #include "ev_vars.h"
696 #undef VAR 1268 #undef VAR
697 1269
698 static int ev_default_loop_ptr; 1270 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1279# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1280# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1281# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1282#endif
711 1283
712#define EVUNLOOP_RECURSE 0x80 1284#define EVBREAK_RECURSE 0x80
713 1285
714/*****************************************************************************/ 1286/*****************************************************************************/
715 1287
716#ifndef EV_HAVE_EV_TIME 1288#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1289ev_tstamp
718ev_time (void) 1290ev_time (void) EV_THROW
719{ 1291{
720#if EV_USE_REALTIME 1292#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 1293 if (expect_true (have_realtime))
722 { 1294 {
723 struct timespec ts; 1295 struct timespec ts;
… …
747 return ev_time (); 1319 return ev_time ();
748} 1320}
749 1321
750#if EV_MULTIPLICITY 1322#if EV_MULTIPLICITY
751ev_tstamp 1323ev_tstamp
752ev_now (EV_P) 1324ev_now (EV_P) EV_THROW
753{ 1325{
754 return ev_rt_now; 1326 return ev_rt_now;
755} 1327}
756#endif 1328#endif
757 1329
758void 1330void
759ev_sleep (ev_tstamp delay) 1331ev_sleep (ev_tstamp delay) EV_THROW
760{ 1332{
761 if (delay > 0.) 1333 if (delay > 0.)
762 { 1334 {
763#if EV_USE_NANOSLEEP 1335#if EV_USE_NANOSLEEP
764 struct timespec ts; 1336 struct timespec ts;
765 1337
766 ts.tv_sec = (time_t)delay; 1338 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1339 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1340#elif defined _WIN32
771 Sleep ((unsigned long)(delay * 1e3)); 1341 Sleep ((unsigned long)(delay * 1e3));
772#else 1342#else
773 struct timeval tv; 1343 struct timeval tv;
774 1344
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1345 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1346 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1347 /* by older ones */
1348 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1349 select (0, 0, 0, 0, &tv);
782#endif 1350#endif
783 } 1351 }
784} 1352}
785 1353
786/*****************************************************************************/ 1354/*****************************************************************************/
787 1355
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1356#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1357
790/* find a suitable new size for the given array, */ 1358/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1359/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1360inline_size int
793array_nextsize (int elem, int cur, int cnt) 1361array_nextsize (int elem, int cur, int cnt)
794{ 1362{
795 int ncur = cur + 1; 1363 int ncur = cur + 1;
796 1364
797 do 1365 do
798 ncur <<= 1; 1366 ncur <<= 1;
799 while (cnt > ncur); 1367 while (cnt > ncur);
800 1368
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1369 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1370 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1371 {
804 ncur *= elem; 1372 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1373 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1374 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1376 }
809 1377
810 return ncur; 1378 return ncur;
811} 1379}
812 1380
813static noinline void * 1381static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1382array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1383{
816 *cur = array_nextsize (elem, *cur, cnt); 1384 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1385 return ev_realloc (base, elem * *cur);
818} 1386}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1389 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1390
823#define array_needsize(type,base,cur,cnt,init) \ 1391#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1392 if (expect_false ((cnt) > (cur))) \
825 { \ 1393 { \
826 int ocur_ = (cur); \ 1394 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1395 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1396 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1397 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1398 }
831 1399
… …
849pendingcb (EV_P_ ev_prepare *w, int revents) 1417pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 1418{
851} 1419}
852 1420
853void noinline 1421void noinline
854ev_feed_event (EV_P_ void *w, int revents) 1422ev_feed_event (EV_P_ void *w, int revents) EV_THROW
855{ 1423{
856 W w_ = (W)w; 1424 W w_ = (W)w;
857 int pri = ABSPRI (w_); 1425 int pri = ABSPRI (w_);
858 1426
859 if (expect_false (w_->pending)) 1427 if (expect_false (w_->pending))
… …
863 w_->pending = ++pendingcnt [pri]; 1431 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1432 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
865 pendings [pri][w_->pending - 1].w = w_; 1433 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 1434 pendings [pri][w_->pending - 1].events = revents;
867 } 1435 }
1436
1437 pendingpri = NUMPRI - 1;
868} 1438}
869 1439
870inline_speed void 1440inline_speed void
871feed_reverse (EV_P_ W w) 1441feed_reverse (EV_P_ W w)
872{ 1442{
… …
918 if (expect_true (!anfd->reify)) 1488 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
920} 1490}
921 1491
922void 1492void
923ev_feed_fd_event (EV_P_ int fd, int revents) 1493ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
924{ 1494{
925 if (fd >= 0 && fd < anfdmax) 1495 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 1496 fd_event_nocheck (EV_A_ fd, revents);
927} 1497}
928 1498
… …
931inline_size void 1501inline_size void
932fd_reify (EV_P) 1502fd_reify (EV_P)
933{ 1503{
934 int i; 1504 int i;
935 1505
1506#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1507 for (i = 0; i < fdchangecnt; ++i)
1508 {
1509 int fd = fdchanges [i];
1510 ANFD *anfd = anfds + fd;
1511
1512 if (anfd->reify & EV__IOFDSET && anfd->head)
1513 {
1514 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1515
1516 if (handle != anfd->handle)
1517 {
1518 unsigned long arg;
1519
1520 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1521
1522 /* handle changed, but fd didn't - we need to do it in two steps */
1523 backend_modify (EV_A_ fd, anfd->events, 0);
1524 anfd->events = 0;
1525 anfd->handle = handle;
1526 }
1527 }
1528 }
1529#endif
1530
936 for (i = 0; i < fdchangecnt; ++i) 1531 for (i = 0; i < fdchangecnt; ++i)
937 { 1532 {
938 int fd = fdchanges [i]; 1533 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1534 ANFD *anfd = anfds + fd;
940 ev_io *w; 1535 ev_io *w;
941 1536
942 unsigned char events = 0; 1537 unsigned char o_events = anfd->events;
1538 unsigned char o_reify = anfd->reify;
943 1539
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1540 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1541
947#if EV_SELECT_IS_WINSOCKET 1542 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1543 {
950 unsigned long arg; 1544 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1547 anfd->events |= (unsigned char)w->events;
1548
1549 if (o_events != anfd->events)
1550 o_reify = EV__IOFDSET; /* actually |= */
953 } 1551 }
954#endif
955 1552
956 { 1553 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 1554 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1555 }
967 1556
968 fdchangecnt = 0; 1557 fdchangecnt = 0;
969} 1558}
970 1559
… …
982 fdchanges [fdchangecnt - 1] = fd; 1571 fdchanges [fdchangecnt - 1] = fd;
983 } 1572 }
984} 1573}
985 1574
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1575/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1576inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1577fd_kill (EV_P_ int fd)
989{ 1578{
990 ev_io *w; 1579 ev_io *w;
991 1580
992 while ((w = (ev_io *)anfds [fd].head)) 1581 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1584 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1585 }
997} 1586}
998 1587
999/* check whether the given fd is actually valid, for error recovery */ 1588/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1589inline_size int ecb_cold
1001fd_valid (int fd) 1590fd_valid (int fd)
1002{ 1591{
1003#ifdef _WIN32 1592#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1593 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1594#else
1006 return fcntl (fd, F_GETFD) != -1; 1595 return fcntl (fd, F_GETFD) != -1;
1007#endif 1596#endif
1008} 1597}
1009 1598
1010/* called on EBADF to verify fds */ 1599/* called on EBADF to verify fds */
1011static void noinline 1600static void noinline ecb_cold
1012fd_ebadf (EV_P) 1601fd_ebadf (EV_P)
1013{ 1602{
1014 int fd; 1603 int fd;
1015 1604
1016 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1607 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1608 fd_kill (EV_A_ fd);
1020} 1609}
1021 1610
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1611/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1612static void noinline ecb_cold
1024fd_enomem (EV_P) 1613fd_enomem (EV_P)
1025{ 1614{
1026 int fd; 1615 int fd;
1027 1616
1028 for (fd = anfdmax; fd--; ) 1617 for (fd = anfdmax; fd--; )
… …
1063} 1652}
1064 1653
1065/*****************************************************************************/ 1654/*****************************************************************************/
1066 1655
1067/* 1656/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1657 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1658 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1659 * the branching factor of the d-tree.
1071 */ 1660 */
1072 1661
1073/* 1662/*
… …
1223 1812
1224/*****************************************************************************/ 1813/*****************************************************************************/
1225 1814
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 1816
1228static void noinline 1817static void noinline ecb_cold
1229evpipe_init (EV_P) 1818evpipe_init (EV_P)
1230{ 1819{
1231 if (!ev_is_active (&pipe_w)) 1820 if (!ev_is_active (&pipe_w))
1232 { 1821 {
1233# if EV_USE_EVENTFD 1822# if EV_USE_EVENTFD
… …
1255 ev_io_start (EV_A_ &pipe_w); 1844 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */ 1845 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 } 1846 }
1258} 1847}
1259 1848
1260inline_size void 1849inline_speed void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1850evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{ 1851{
1263 if (!*flag) 1852 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1853
1854 if (expect_true (*flag))
1855 return;
1856
1857 *flag = 1;
1858
1859 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1860
1861 pipe_write_skipped = 1;
1862
1863 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1864
1865 if (pipe_write_wanted)
1264 { 1866 {
1867 int old_errno;
1868
1869 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1870
1265 int old_errno = errno; /* save errno because write might clobber it */ 1871 old_errno = errno; /* save errno because write will clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269 1872
1270#if EV_USE_EVENTFD 1873#if EV_USE_EVENTFD
1271 if (evfd >= 0) 1874 if (evfd >= 0)
1272 { 1875 {
1273 uint64_t counter = 1; 1876 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t)); 1877 write (evfd, &counter, sizeof (uint64_t));
1275 } 1878 }
1276 else 1879 else
1277#endif 1880#endif
1881 {
1882#ifdef _WIN32
1883 WSABUF buf;
1884 DWORD sent;
1885 buf.buf = &buf;
1886 buf.len = 1;
1887 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1888#else
1278 write (evpipe [1], &dummy, 1); 1889 write (evpipe [1], &(evpipe [1]), 1);
1890#endif
1891 }
1279 1892
1280 errno = old_errno; 1893 errno = old_errno;
1281 } 1894 }
1282} 1895}
1283 1896
… …
1286static void 1899static void
1287pipecb (EV_P_ ev_io *iow, int revents) 1900pipecb (EV_P_ ev_io *iow, int revents)
1288{ 1901{
1289 int i; 1902 int i;
1290 1903
1904 if (revents & EV_READ)
1905 {
1291#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1292 if (evfd >= 0) 1907 if (evfd >= 0)
1293 { 1908 {
1294 uint64_t counter; 1909 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 1910 read (evfd, &counter, sizeof (uint64_t));
1296 } 1911 }
1297 else 1912 else
1298#endif 1913#endif
1299 { 1914 {
1300 char dummy; 1915 char dummy[4];
1916#ifdef _WIN32
1917 WSABUF buf;
1918 DWORD recvd;
1919 buf.buf = dummy;
1920 buf.len = sizeof (dummy);
1921 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1922#else
1301 read (evpipe [0], &dummy, 1); 1923 read (evpipe [0], &dummy, sizeof (dummy));
1924#endif
1925 }
1302 } 1926 }
1303 1927
1928 pipe_write_skipped = 0;
1929
1930 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1931
1932#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 1933 if (sig_pending)
1305 { 1934 {
1306 sig_pending = 0; 1935 sig_pending = 0;
1936
1937 ECB_MEMORY_FENCE_RELEASE;
1307 1938
1308 for (i = EV_NSIG - 1; i--; ) 1939 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 1940 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 1941 ev_feed_signal_event (EV_A_ i + 1);
1311 } 1942 }
1943#endif
1312 1944
1313#if EV_ASYNC_ENABLE 1945#if EV_ASYNC_ENABLE
1314 if (async_pending) 1946 if (async_pending)
1315 { 1947 {
1316 async_pending = 0; 1948 async_pending = 0;
1949
1950 ECB_MEMORY_FENCE_RELEASE;
1317 1951
1318 for (i = asynccnt; i--; ) 1952 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 1953 if (asyncs [i]->sent)
1320 { 1954 {
1321 asyncs [i]->sent = 0; 1955 asyncs [i]->sent = 0;
… …
1325#endif 1959#endif
1326} 1960}
1327 1961
1328/*****************************************************************************/ 1962/*****************************************************************************/
1329 1963
1964void
1965ev_feed_signal (int signum) EV_THROW
1966{
1967#if EV_MULTIPLICITY
1968 EV_P = signals [signum - 1].loop;
1969
1970 if (!EV_A)
1971 return;
1972#endif
1973
1974 if (!ev_active (&pipe_w))
1975 return;
1976
1977 signals [signum - 1].pending = 1;
1978 evpipe_write (EV_A_ &sig_pending);
1979}
1980
1330static void 1981static void
1331ev_sighandler (int signum) 1982ev_sighandler (int signum)
1332{ 1983{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 1984#ifdef _WIN32
1338 signal (signum, ev_sighandler); 1985 signal (signum, ev_sighandler);
1339#endif 1986#endif
1340 1987
1341 signals [signum - 1].pending = 1; 1988 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 1989}
1344 1990
1345void noinline 1991void noinline
1346ev_feed_signal_event (EV_P_ int signum) 1992ev_feed_signal_event (EV_P_ int signum) EV_THROW
1347{ 1993{
1348 WL w; 1994 WL w;
1349 1995
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1996 if (expect_false (signum <= 0 || signum > EV_NSIG))
1351 return; 1997 return;
… …
1447 2093
1448#endif 2094#endif
1449 2095
1450/*****************************************************************************/ 2096/*****************************************************************************/
1451 2097
2098#if EV_USE_IOCP
2099# include "ev_iocp.c"
2100#endif
1452#if EV_USE_PORT 2101#if EV_USE_PORT
1453# include "ev_port.c" 2102# include "ev_port.c"
1454#endif 2103#endif
1455#if EV_USE_KQUEUE 2104#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2105# include "ev_kqueue.c"
… …
1463#endif 2112#endif
1464#if EV_USE_SELECT 2113#if EV_USE_SELECT
1465# include "ev_select.c" 2114# include "ev_select.c"
1466#endif 2115#endif
1467 2116
1468int 2117int ecb_cold
1469ev_version_major (void) 2118ev_version_major (void) EV_THROW
1470{ 2119{
1471 return EV_VERSION_MAJOR; 2120 return EV_VERSION_MAJOR;
1472} 2121}
1473 2122
1474int 2123int ecb_cold
1475ev_version_minor (void) 2124ev_version_minor (void) EV_THROW
1476{ 2125{
1477 return EV_VERSION_MINOR; 2126 return EV_VERSION_MINOR;
1478} 2127}
1479 2128
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2129/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2130int inline_size ecb_cold
1482enable_secure (void) 2131enable_secure (void)
1483{ 2132{
1484#ifdef _WIN32 2133#ifdef _WIN32
1485 return 0; 2134 return 0;
1486#else 2135#else
1487 return getuid () != geteuid () 2136 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2137 || getgid () != getegid ();
1489#endif 2138#endif
1490} 2139}
1491 2140
1492unsigned int 2141unsigned int ecb_cold
1493ev_supported_backends (void) 2142ev_supported_backends (void) EV_THROW
1494{ 2143{
1495 unsigned int flags = 0; 2144 unsigned int flags = 0;
1496 2145
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2146 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2147 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2150 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2151
1503 return flags; 2152 return flags;
1504} 2153}
1505 2154
1506unsigned int 2155unsigned int ecb_cold
1507ev_recommended_backends (void) 2156ev_recommended_backends (void) EV_THROW
1508{ 2157{
1509 unsigned int flags = ev_supported_backends (); 2158 unsigned int flags = ev_supported_backends ();
1510 2159
1511#ifndef __NetBSD__ 2160#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2161 /* kqueue is borked on everything but netbsd apparently */
… …
1523#endif 2172#endif
1524 2173
1525 return flags; 2174 return flags;
1526} 2175}
1527 2176
2177unsigned int ecb_cold
2178ev_embeddable_backends (void) EV_THROW
2179{
2180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2181
2182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2184 flags &= ~EVBACKEND_EPOLL;
2185
2186 return flags;
2187}
2188
1528unsigned int 2189unsigned int
1529ev_embeddable_backends (void)
1530{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */
1535 flags &= ~EVBACKEND_EPOLL;
1536
1537 return flags;
1538}
1539
1540unsigned int
1541ev_backend (EV_P) 2190ev_backend (EV_P) EV_THROW
1542{ 2191{
1543 return backend; 2192 return backend;
1544} 2193}
1545 2194
1546#if EV_FEATURE_API 2195#if EV_FEATURE_API
1547unsigned int 2196unsigned int
1548ev_iteration (EV_P) 2197ev_iteration (EV_P) EV_THROW
1549{ 2198{
1550 return loop_count; 2199 return loop_count;
1551} 2200}
1552 2201
1553unsigned int 2202unsigned int
1554ev_depth (EV_P) 2203ev_depth (EV_P) EV_THROW
1555{ 2204{
1556 return loop_depth; 2205 return loop_depth;
1557} 2206}
1558 2207
1559void 2208void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2209ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1561{ 2210{
1562 io_blocktime = interval; 2211 io_blocktime = interval;
1563} 2212}
1564 2213
1565void 2214void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2215ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1567{ 2216{
1568 timeout_blocktime = interval; 2217 timeout_blocktime = interval;
1569} 2218}
1570 2219
1571void 2220void
1572ev_set_userdata (EV_P_ void *data) 2221ev_set_userdata (EV_P_ void *data) EV_THROW
1573{ 2222{
1574 userdata = data; 2223 userdata = data;
1575} 2224}
1576 2225
1577void * 2226void *
1578ev_userdata (EV_P) 2227ev_userdata (EV_P) EV_THROW
1579{ 2228{
1580 return userdata; 2229 return userdata;
1581} 2230}
1582 2231
2232void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2233ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1584{ 2234{
1585 invoke_cb = invoke_pending_cb; 2235 invoke_cb = invoke_pending_cb;
1586} 2236}
1587 2237
2238void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2239ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1589{ 2240{
1590 release_cb = release; 2241 release_cb = release;
1591 acquire_cb = acquire; 2242 acquire_cb = acquire;
1592} 2243}
1593#endif 2244#endif
1594 2245
1595/* initialise a loop structure, must be zero-initialised */ 2246/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2247static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2248loop_init (EV_P_ unsigned int flags) EV_THROW
1598{ 2249{
1599 if (!backend) 2250 if (!backend)
1600 { 2251 {
2252 origflags = flags;
2253
1601#if EV_USE_REALTIME 2254#if EV_USE_REALTIME
1602 if (!have_realtime) 2255 if (!have_realtime)
1603 { 2256 {
1604 struct timespec ts; 2257 struct timespec ts;
1605 2258
… …
1627 if (!(flags & EVFLAG_NOENV) 2280 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2281 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2282 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2283 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2284
1632 ev_rt_now = ev_time (); 2285 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2286 mn_now = get_clock ();
1634 now_floor = mn_now; 2287 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2288 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2289#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2290 invoke_cb = ev_invoke_pending;
1638#endif 2291#endif
1639 2292
1640 io_blocktime = 0.; 2293 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2294 timeout_blocktime = 0.;
1642 backend = 0; 2295 backend = 0;
1643 backend_fd = -1; 2296 backend_fd = -1;
1644 sig_pending = 0; 2297 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2298#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2299 async_pending = 0;
1647#endif 2300#endif
2301 pipe_write_skipped = 0;
2302 pipe_write_wanted = 0;
1648#if EV_USE_INOTIFY 2303#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2304 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2305#endif
1651#if EV_USE_SIGNALFD 2306#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2307 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2308#endif
1654 2309
1655 if (!(flags & 0x0000ffffU)) 2310 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2311 flags |= ev_recommended_backends ();
1657 2312
2313#if EV_USE_IOCP
2314 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2315#endif
1658#if EV_USE_PORT 2316#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2318#endif
1661#if EV_USE_KQUEUE 2319#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2337#endif
1680 } 2338 }
1681} 2339}
1682 2340
1683/* free up a loop structure */ 2341/* free up a loop structure */
1684static void noinline 2342void ecb_cold
1685loop_destroy (EV_P) 2343ev_loop_destroy (EV_P)
1686{ 2344{
1687 int i; 2345 int i;
2346
2347#if EV_MULTIPLICITY
2348 /* mimic free (0) */
2349 if (!EV_A)
2350 return;
2351#endif
2352
2353#if EV_CLEANUP_ENABLE
2354 /* queue cleanup watchers (and execute them) */
2355 if (expect_false (cleanupcnt))
2356 {
2357 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2358 EV_INVOKE_PENDING;
2359 }
2360#endif
2361
2362#if EV_CHILD_ENABLE
2363 if (ev_is_active (&childev))
2364 {
2365 ev_ref (EV_A); /* child watcher */
2366 ev_signal_stop (EV_A_ &childev);
2367 }
2368#endif
1688 2369
1689 if (ev_is_active (&pipe_w)) 2370 if (ev_is_active (&pipe_w))
1690 { 2371 {
1691 /*ev_ref (EV_A);*/ 2372 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2373 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1714#endif 2395#endif
1715 2396
1716 if (backend_fd >= 0) 2397 if (backend_fd >= 0)
1717 close (backend_fd); 2398 close (backend_fd);
1718 2399
2400#if EV_USE_IOCP
2401 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2402#endif
1719#if EV_USE_PORT 2403#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2404 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2405#endif
1722#if EV_USE_KQUEUE 2406#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2407 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2434 array_free (periodic, EMPTY);
1751#endif 2435#endif
1752#if EV_FORK_ENABLE 2436#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2437 array_free (fork, EMPTY);
1754#endif 2438#endif
2439#if EV_CLEANUP_ENABLE
2440 array_free (cleanup, EMPTY);
2441#endif
1755 array_free (prepare, EMPTY); 2442 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2443 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2444#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2445 array_free (async, EMPTY);
1759#endif 2446#endif
1760 2447
1761 backend = 0; 2448 backend = 0;
2449
2450#if EV_MULTIPLICITY
2451 if (ev_is_default_loop (EV_A))
2452#endif
2453 ev_default_loop_ptr = 0;
2454#if EV_MULTIPLICITY
2455 else
2456 ev_free (EV_A);
2457#endif
1762} 2458}
1763 2459
1764#if EV_USE_INOTIFY 2460#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2461inline_size void infy_fork (EV_P);
1766#endif 2462#endif
… …
1781 infy_fork (EV_A); 2477 infy_fork (EV_A);
1782#endif 2478#endif
1783 2479
1784 if (ev_is_active (&pipe_w)) 2480 if (ev_is_active (&pipe_w))
1785 { 2481 {
1786 /* this "locks" the handlers against writing to the pipe */ 2482 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 2483
1793 ev_ref (EV_A); 2484 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2485 ev_io_stop (EV_A_ &pipe_w);
1795 2486
1796#if EV_USE_EVENTFD 2487#if EV_USE_EVENTFD
… …
1814 postfork = 0; 2505 postfork = 0;
1815} 2506}
1816 2507
1817#if EV_MULTIPLICITY 2508#if EV_MULTIPLICITY
1818 2509
1819struct ev_loop * 2510struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2511ev_loop_new (unsigned int flags) EV_THROW
1821{ 2512{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2513 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2514
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2515 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2516 loop_init (EV_A_ flags);
1826 2517
1827 if (ev_backend (EV_A)) 2518 if (ev_backend (EV_A))
1828 return EV_A; 2519 return EV_A;
1829 2520
2521 ev_free (EV_A);
1830 return 0; 2522 return 0;
1831} 2523}
1832 2524
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 2525#endif /* multiplicity */
1846 2526
1847#if EV_VERIFY 2527#if EV_VERIFY
1848static void noinline 2528static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2529verify_watcher (EV_P_ W w)
1850{ 2530{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2531 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2532
1853 if (w->pending) 2533 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2534 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2535}
1856 2536
1857static void noinline 2537static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2538verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2539{
1860 int i; 2540 int i;
1861 2541
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2542 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2547
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2548 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2549 }
1870} 2550}
1871 2551
1872static void noinline 2552static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2553array_verify (EV_P_ W *ws, int cnt)
1874{ 2554{
1875 while (cnt--) 2555 while (cnt--)
1876 { 2556 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2557 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2559 }
1880} 2560}
1881#endif 2561#endif
1882 2562
1883#if EV_FEATURE_API 2563#if EV_FEATURE_API
1884void 2564void ecb_cold
1885ev_verify (EV_P) 2565ev_verify (EV_P) EV_THROW
1886{ 2566{
1887#if EV_VERIFY 2567#if EV_VERIFY
1888 int i; 2568 int i, j;
1889 WL w; 2569 WL w, w2;
1890 2570
1891 assert (activecnt >= -1); 2571 assert (activecnt >= -1);
1892 2572
1893 assert (fdchangemax >= fdchangecnt); 2573 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 2574 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2575 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 2576
1897 assert (anfdmax >= 0); 2577 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 2578 for (i = j = 0; i < anfdmax; ++i)
1899 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 2580 {
1901 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
1902 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));
1903 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));
1904 } 2591 }
1905 2592
1906 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
… …
1924#if EV_FORK_ENABLE 2611#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2612 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2613 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2614#endif
1928 2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
1929#if EV_ASYNC_ENABLE 2621#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2622 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2624#endif
1933 2625
… …
1950#endif 2642#endif
1951} 2643}
1952#endif 2644#endif
1953 2645
1954#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1955struct ev_loop * 2647struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 2648#else
1958int 2649int
2650#endif
1959ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1960#endif
1961{ 2652{
1962 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1963 { 2654 {
1964#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2675
1985 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1986} 2677}
1987 2678
1988void 2679void
1989ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
1990{ 2681{
1991#if EV_MULTIPLICITY
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
2013} 2683}
2014 2684
2015/*****************************************************************************/ 2685/*****************************************************************************/
2016 2686
2017void 2687void
… …
2019{ 2689{
2020 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
2021} 2691}
2022 2692
2023unsigned int 2693unsigned int
2024ev_pending_count (EV_P) 2694ev_pending_count (EV_P) EV_THROW
2025{ 2695{
2026 int pri; 2696 int pri;
2027 unsigned int count = 0; 2697 unsigned int count = 0;
2028 2698
2029 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
… …
2033} 2703}
2034 2704
2035void noinline 2705void noinline
2036ev_invoke_pending (EV_P) 2706ev_invoke_pending (EV_P)
2037{ 2707{
2038 int pri; 2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2039
2040 for (pri = NUMPRI; pri--; )
2041 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
2042 { 2710 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047 2712
2048 p->w->pending = 0; 2713 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2051 } 2716 }
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 2778 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 2779 }
2115} 2780}
2116 2781
2117#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
2118/* make periodics pending */ 2808/* make periodics pending */
2119inline_size void 2809inline_size void
2120periodics_reify (EV_P) 2810periodics_reify (EV_P)
2121{ 2811{
2122 EV_FREQUENT_CHECK; 2812 EV_FREQUENT_CHECK;
… …
2141 ANHE_at_cache (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2143 } 2833 }
2144 else if (w->interval) 2834 else if (w->interval)
2145 { 2835 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2836 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
2162 } 2839 }
2163 else 2840 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 2848 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 2849 }
2173} 2850}
2174 2851
2175/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 2854static void noinline ecb_cold
2178periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
2179{ 2856{
2180 int i; 2857 int i;
2181 2858
2182 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 2863
2187 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 2866 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
2191 2868
2192 ANHE_at_cache (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
2193 } 2870 }
2194 2871
2195 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
2196} 2873}
2197#endif 2874#endif
2198 2875
2199/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
2200static void noinline 2877static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 2879{
2203 int i; 2880 int i;
2204 2881
2205 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
2244 */ 2921 */
2245 for (i = 4; --i; ) 2922 for (i = 4; --i; )
2246 { 2923 {
2924 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
2248 2926
2927 diff = odiff - rtmn_diff;
2928
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 2930 return; /* all is well */
2251 2931
2252 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 2933 mn_now = get_clock ();
2254 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2276 2956
2277 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2278 } 2958 }
2279} 2959}
2280 2960
2281void 2961int
2282ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2283{ 2963{
2284#if EV_FEATURE_API 2964#if EV_FEATURE_API
2285 ++loop_depth; 2965 ++loop_depth;
2286#endif 2966#endif
2287 2967
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 2969
2290 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
2291 2971
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 2973
2294 do 2974 do
2295 { 2975 {
… …
2338 /* calculate blocking time */ 3018 /* calculate blocking time */
2339 { 3019 {
2340 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
2342 3022
3023 /* remember old timestamp for io_blocktime calculation */
3024 ev_tstamp prev_mn_now = mn_now;
3025
3026 /* update time to cancel out callback processing overhead */
3027 time_update (EV_A_ 1e100);
3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3035 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2352 3037
2353 if (timercnt) 3038 if (timercnt)
2354 { 3039 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2357 } 3042 }
2358 3043
2359#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3045 if (periodiccnt)
2361 { 3046 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2364 } 3049 }
2365#endif 3050#endif
2366 3051
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
3055
3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
2370 3060
2371 /* extra check because io_blocktime is commonly 0 */ 3061 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3062 if (expect_false (io_blocktime))
2373 { 3063 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3065
2376 if (sleeptime > waittime - backend_fudge) 3066 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3067 sleeptime = waittime - backend_mintime;
2378 3068
2379 if (expect_true (sleeptime > 0.)) 3069 if (expect_true (sleeptime > 0.))
2380 { 3070 {
2381 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3072 waittime -= sleeptime;
… …
2385 } 3075 }
2386 3076
2387#if EV_FEATURE_API 3077#if EV_FEATURE_API
2388 ++loop_count; 3078 ++loop_count;
2389#endif 3079#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
2393 3092
2394 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2396 } 3095 }
2397 3096
… …
2415 EV_INVOKE_PENDING; 3114 EV_INVOKE_PENDING;
2416 } 3115 }
2417 while (expect_true ( 3116 while (expect_true (
2418 activecnt 3117 activecnt
2419 && !loop_done 3118 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3120 ));
2422 3121
2423 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
2425 3124
2426#if EV_FEATURE_API 3125#if EV_FEATURE_API
2427 --loop_depth; 3126 --loop_depth;
2428#endif 3127#endif
3128
3129 return activecnt;
2429} 3130}
2430 3131
2431void 3132void
2432ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2433{ 3134{
2434 loop_done = how; 3135 loop_done = how;
2435} 3136}
2436 3137
2437void 3138void
2438ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2439{ 3140{
2440 ++activecnt; 3141 ++activecnt;
2441} 3142}
2442 3143
2443void 3144void
2444ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2445{ 3146{
2446 --activecnt; 3147 --activecnt;
2447} 3148}
2448 3149
2449void 3150void
2450ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2451{ 3152{
2452 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2453} 3154}
2454 3155
2455void 3156void
2456ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2457{ 3158{
2458 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2459} 3160}
2460 3161
2461void 3162void
2462ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2463{ 3164{
2464 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2465 3166
2466 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2506 w->pending = 0; 3207 w->pending = 0;
2507 } 3208 }
2508} 3209}
2509 3210
2510int 3211int
2511ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2512{ 3213{
2513 W w_ = (W)w; 3214 W w_ = (W)w;
2514 int pending = w_->pending; 3215 int pending = w_->pending;
2515 3216
2516 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2549} 3250}
2550 3251
2551/*****************************************************************************/ 3252/*****************************************************************************/
2552 3253
2553void noinline 3254void noinline
2554ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2555{ 3256{
2556 int fd = w->fd; 3257 int fd = w->fd;
2557 3258
2558 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2559 return; 3260 return;
… …
2565 3266
2566 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2568 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2569 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2572 3276
2573 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2574} 3278}
2575 3279
2576void noinline 3280void noinline
2577ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2578{ 3282{
2579 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2581 return; 3285 return;
2582 3286
… …
2585 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2586 3290
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2589 3293
2590 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3295
2592 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2593} 3297}
2594 3298
2595void noinline 3299void noinline
2596ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2597{ 3301{
2598 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2599 return; 3303 return;
2600 3304
2601 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2615 3319
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 3321}
2618 3322
2619void noinline 3323void noinline
2620ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2621{ 3325{
2622 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2624 return; 3328 return;
2625 3329
… …
2645 3349
2646 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2647} 3351}
2648 3352
2649void noinline 3353void noinline
2650ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2651{ 3355{
2652 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2653 3359
2654 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2655 { 3361 {
2656 if (w->repeat) 3362 if (w->repeat)
2657 { 3363 {
… …
2670 3376
2671 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2672} 3378}
2673 3379
2674ev_tstamp 3380ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2676{ 3382{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678} 3384}
2679 3385
2680#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2681void noinline 3387void noinline
2682ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2683{ 3389{
2684 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2685 return; 3391 return;
2686 3392
2687 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3395 else if (w->interval)
2690 { 3396 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3399 }
2695 else 3400 else
2696 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2697 3402
2698 EV_FREQUENT_CHECK; 3403 EV_FREQUENT_CHECK;
… …
2708 3413
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 3415}
2711 3416
2712void noinline 3417void noinline
2713ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2714{ 3419{
2715 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2717 return; 3422 return;
2718 3423
… …
2736 3441
2737 EV_FREQUENT_CHECK; 3442 EV_FREQUENT_CHECK;
2738} 3443}
2739 3444
2740void noinline 3445void noinline
2741ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2742{ 3447{
2743 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2746} 3451}
… …
2751#endif 3456#endif
2752 3457
2753#if EV_SIGNAL_ENABLE 3458#if EV_SIGNAL_ENABLE
2754 3459
2755void noinline 3460void noinline
2756ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2757{ 3462{
2758 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2759 return; 3464 return;
2760 3465
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2819 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
2823 3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
2824 sigemptyset (&sa.sa_mask); 3531 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3532 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
2827#endif 3535#endif
2828 } 3536 }
2829 3537
2830 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2831} 3539}
2832 3540
2833void noinline 3541void noinline
2834ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2835{ 3543{
2836 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2838 return; 3546 return;
2839 3547
… …
2870#endif 3578#endif
2871 3579
2872#if EV_CHILD_ENABLE 3580#if EV_CHILD_ENABLE
2873 3581
2874void 3582void
2875ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2876{ 3584{
2877#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 3587#endif
2880 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
… …
2887 3595
2888 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2889} 3597}
2890 3598
2891void 3599void
2892ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2893{ 3601{
2894 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2896 return; 3604 return;
2897 3605
… …
2972 if (!pend || pend == path) 3680 if (!pend || pend == path)
2973 break; 3681 break;
2974 3682
2975 *pend = 0; 3683 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 3685 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 3687 }
2980 } 3688 }
2981 3689
2982 if (w->wd >= 0) 3690 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 3758 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 3759 }
3052} 3760}
3053 3761
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 3762inline_size void ecb_cold
3087ev_check_2625 (EV_P) 3763ev_check_2625 (EV_P)
3088{ 3764{
3089 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 3767 */
… …
3096} 3772}
3097 3773
3098inline_size int 3774inline_size int
3099infy_newfd (void) 3775infy_newfd (void)
3100{ 3776{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 3779 if (fd >= 0)
3104 return fd; 3780 return fd;
3105#endif 3781#endif
3106 return inotify_init (); 3782 return inotify_init ();
… …
3181#else 3857#else
3182# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 3859#endif
3184 3860
3185void 3861void
3186ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3187{ 3863{
3188 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 3907 }
3232} 3908}
3233 3909
3234void 3910void
3235ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3236{ 3912{
3237 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
3238 return; 3914 return;
3239 3915
3240 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
3261 3937
3262 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3263} 3939}
3264 3940
3265void 3941void
3266ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3267{ 3943{
3268 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
3270 return; 3946 return;
3271 3947
… …
3287} 3963}
3288#endif 3964#endif
3289 3965
3290#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
3291void 3967void
3292ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3293{ 3969{
3294 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3295 return; 3971 return;
3296 3972
3297 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
3310 3986
3311 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3312} 3988}
3313 3989
3314void 3990void
3315ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3316{ 3992{
3317 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
3319 return; 3995 return;
3320 3996
… …
3334} 4010}
3335#endif 4011#endif
3336 4012
3337#if EV_PREPARE_ENABLE 4013#if EV_PREPARE_ENABLE
3338void 4014void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3340{ 4016{
3341 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
3342 return; 4018 return;
3343 4019
3344 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
3349 4025
3350 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
3351} 4027}
3352 4028
3353void 4029void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3355{ 4031{
3356 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3358 return; 4034 return;
3359 4035
… …
3372} 4048}
3373#endif 4049#endif
3374 4050
3375#if EV_CHECK_ENABLE 4051#if EV_CHECK_ENABLE
3376void 4052void
3377ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
3378{ 4054{
3379 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
3380 return; 4056 return;
3381 4057
3382 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
3387 4063
3388 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3389} 4065}
3390 4066
3391void 4067void
3392ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
3393{ 4069{
3394 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
3396 return; 4072 return;
3397 4073
… …
3410} 4086}
3411#endif 4087#endif
3412 4088
3413#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
3414void noinline 4090void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3416{ 4092{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3418} 4094}
3419 4095
3420static void 4096static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4098{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4100
3425 if (ev_cb (w)) 4101 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4103 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
3429} 4105}
3430 4106
3431static void 4107static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4109{
… …
3437 EV_P = w->other; 4113 EV_P = w->other;
3438 4114
3439 while (fdchangecnt) 4115 while (fdchangecnt)
3440 { 4116 {
3441 fd_reify (EV_A); 4117 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4119 }
3444 } 4120 }
3445} 4121}
3446 4122
3447static void 4123static void
… …
3453 4129
3454 { 4130 {
3455 EV_P = w->other; 4131 EV_P = w->other;
3456 4132
3457 ev_loop_fork (EV_A); 4133 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4134 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4135 }
3460 4136
3461 ev_embed_start (EV_A_ w); 4137 ev_embed_start (EV_A_ w);
3462} 4138}
3463 4139
… …
3468 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3469} 4145}
3470#endif 4146#endif
3471 4147
3472void 4148void
3473ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3474{ 4150{
3475 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3476 return; 4152 return;
3477 4153
3478 { 4154 {
… …
3499 4175
3500 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3501} 4177}
3502 4178
3503void 4179void
3504ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3505{ 4181{
3506 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3508 return; 4184 return;
3509 4185
… …
3519} 4195}
3520#endif 4196#endif
3521 4197
3522#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3523void 4199void
3524ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3525{ 4201{
3526 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3527 return; 4203 return;
3528 4204
3529 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3534 4210
3535 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3536} 4212}
3537 4213
3538void 4214void
3539ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3540{ 4216{
3541 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3543 return; 4219 return;
3544 4220
… …
3555 4231
3556 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3557} 4233}
3558#endif 4234#endif
3559 4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
4274}
4275#endif
4276
3560#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3561void 4278void
3562ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3563{ 4280{
3564 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3565 return; 4282 return;
4283
4284 w->sent = 0;
3566 4285
3567 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
3568 4287
3569 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3570 4289
… …
3574 4293
3575 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3576} 4295}
3577 4296
3578void 4297void
3579ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3580{ 4299{
3581 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3583 return; 4302 return;
3584 4303
… …
3595 4314
3596 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3597} 4316}
3598 4317
3599void 4318void
3600ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3601{ 4320{
3602 w->sent = 1; 4321 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 4322 evpipe_write (EV_A_ &async_pending);
3604} 4323}
3605#endif 4324#endif
… …
3642 4361
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 4363}
3645 4364
3646void 4365void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3648{ 4367{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650 4369
3651 if (expect_false (!once)) 4370 if (expect_false (!once))
3652 { 4371 {
… …
3673} 4392}
3674 4393
3675/*****************************************************************************/ 4394/*****************************************************************************/
3676 4395
3677#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3678void 4397void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3680{ 4399{
3681 int i, j; 4400 int i, j;
3682 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3683 4402
3684 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4447#endif
3729 4448
3730#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4454#endif
3736 4455
3737#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3790 4509
3791#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3793#endif 4512#endif
3794 4513
3795#ifdef __cplusplus
3796}
3797#endif
3798

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