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Comparing libev/ev.c (file contents):
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC vs.
Revision 1.441 by root, Wed May 30 15:45:40 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
343#endif 360#endif
344 361
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 365# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
353# else 370# else
… …
378# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
380#endif 397#endif
381 398
382#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 402# include <sys/select.h>
385# endif 403# endif
386#endif 404#endif
387 405
388#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 407# include <sys/statfs.h>
391# include <sys/inotify.h> 408# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
396# endif 413# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 414#endif
402 415
403#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 418# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
412# else 425# else
413# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
414# endif 427# endif
415# endif 428# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 430#endif
424 431
425#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 434# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
434# else 441# else
435# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
436# endif 443# endif
437# endif 444# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 446
443struct signalfd_siginfo 447struct signalfd_siginfo
444{ 448{
445 uint32_t ssi_signo; 449 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
447}; 451};
448# ifdef __cplusplus
449}
450# endif
451#endif 452#endif
452 453
453/**/ 454/**/
454 455
455#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
… …
457#else 458#else
458# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
459#endif 460#endif
460 461
461/* 462/*
462 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 465 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 468
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 471
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 519 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
480#else 536#else
481# define expect(expr,value) (expr) 537 #include <inttypes.h>
482# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
484# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
485# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
486#endif 557 #endif
558#endif
487 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573 #define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32
632 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
639 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync ()
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif
653#endif
654
655#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS
657 /*
658 * if you get undefined symbol references to pthread_mutex_lock,
659 * or failure to find pthread.h, then you should implement
660 * the ECB_MEMORY_FENCE operations for your cpu/compiler
661 * OR provide pthread.h and link against the posix thread library
662 * of your system.
663 */
664 #include <pthread.h>
665 #define ECB_NEEDS_PTHREADS 1
666 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
667
668 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
669 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
670 #endif
671#endif
672
673#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
674 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
675#endif
676
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif
680
681/*****************************************************************************/
682
683#if __cplusplus
684 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__
687#elif ECB_C99
688 #define ecb_inline static inline
689#else
690 #define ecb_inline static
691#endif
692
693#if ECB_GCC_VERSION(3,3)
694 #define ecb_restrict __restrict__
695#elif ECB_C99
696 #define ecb_restrict restrict
697#else
698 #define ecb_restrict
699#endif
700
701typedef int ecb_bool;
702
703#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
707
708#define ecb_function_ ecb_inline
709
710#if ECB_GCC_VERSION(3,1)
711 #define ecb_attribute(attrlist) __attribute__(attrlist)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality)
720#endif
721
722/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5)
724 #define ecb_decltype(x) __decltype(x)
725#elif ECB_GCC_VERSION(3,0)
726 #define ecb_decltype(x) __typeof(x)
727#endif
728
729#define ecb_noinline ecb_attribute ((__noinline__))
730#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__))
733
734#if ECB_C11
735 #define ecb_noreturn _Noreturn
736#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif
739
740#if ECB_GCC_VERSION(4,3)
741 #define ecb_artificial ecb_attribute ((__artificial__))
742 #define ecb_hot ecb_attribute ((__hot__))
743 #define ecb_cold ecb_attribute ((__cold__))
744#else
745 #define ecb_artificial
746 #define ecb_hot
747 #define ecb_cold
748#endif
749
750/* put around conditional expressions if you are very sure that the */
751/* expression is mostly true or mostly false. note that these return */
752/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
755/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr)
758
759/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4)
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */
768#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
770 ecb_function_ int
771 ecb_ctz32 (uint32_t x)
772 {
773 int r = 0;
774
775 x &= ~x + 1; /* this isolates the lowest bit */
776
777#if ECB_branchless_on_i386
778 r += !!(x & 0xaaaaaaaa) << 0;
779 r += !!(x & 0xcccccccc) << 1;
780 r += !!(x & 0xf0f0f0f0) << 2;
781 r += !!(x & 0xff00ff00) << 3;
782 r += !!(x & 0xffff0000) << 4;
783#else
784 if (x & 0xaaaaaaaa) r += 1;
785 if (x & 0xcccccccc) r += 2;
786 if (x & 0xf0f0f0f0) r += 4;
787 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16;
789#endif
790
791 return r;
792 }
793
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
795 ecb_function_ int
796 ecb_ctz64 (uint64_t x)
797 {
798 int shift = x & 0xffffffffU ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift;
800 }
801
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
803 ecb_function_ int
804 ecb_popcount32 (uint32_t x)
805 {
806 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101;
810
811 return x >> 24;
812 }
813
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
815 ecb_function_ int ecb_ld32 (uint32_t x)
816 {
817 int r = 0;
818
819 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; }
824
825 return r;
826 }
827
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
829 ecb_function_ int ecb_ld64 (uint64_t x)
830 {
831 int r = 0;
832
833 if (x >> 32) { x >>= 32; r += 32; }
834
835 return r + ecb_ld32 (x);
836 }
837#endif
838
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
846{
847 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849}
850
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
853{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8);
858
859 return x;
860}
861
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
864{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
869 x = ( x >> 16 ) | ( x << 16);
870
871 return x;
872}
873
874/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
877ecb_function_ int
878ecb_popcount64 (uint64_t x)
879{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881}
882
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
891
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
903 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x)
905#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
907 ecb_function_ uint16_t
908 ecb_bswap16 (uint16_t x)
909 {
910 return ecb_rotl16 (x, 8);
911 }
912
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
914 ecb_function_ uint32_t
915 ecb_bswap32 (uint32_t x)
916 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 }
919
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
921 ecb_function_ uint64_t
922 ecb_bswap64 (uint64_t x)
923 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 }
926#endif
927
928#if ECB_GCC_VERSION(4,5)
929 #define ecb_unreachable() __builtin_unreachable ()
930#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn;
933 ecb_inline void ecb_unreachable (void) { }
934#endif
935
936/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
938
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
940ecb_inline unsigned char
941ecb_byteorder_helper (void)
942{
943 const uint32_t u = 0x11223344;
944 return *(unsigned char *)&u;
945}
946
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
951
952#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif
957
958#if __cplusplus
959 template<typename T>
960 static inline T ecb_div_rd (T val, T div)
961 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 }
964 template<typename T>
965 static inline T ecb_div_ru (T val, T div)
966 {
967 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
968 }
969#else
970 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
971 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
972#endif
973
974#if ecb_cplusplus_does_not_suck
975 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
976 template<typename T, int N>
977 static inline int ecb_array_length (const T (&arr)[N])
978 {
979 return N;
980 }
981#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif
984
985#endif
986
987/* ECB.H END */
988
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
993 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences.
996 */
997# error "memory fences not defined for your architecture, please report"
998#endif
999
1000#ifndef ECB_MEMORY_FENCE
1001# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif
1005
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
490#define inline_size static inline 1010#define inline_size ecb_inline
491 1011
492#if EV_FEATURE_CODE 1012#if EV_FEATURE_CODE
493# define inline_speed static inline 1013# define inline_speed ecb_inline
494#else 1014#else
495# define inline_speed static noinline 1015# define inline_speed static noinline
496#endif 1016#endif
497 1017
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1057# include "ev_win32.c"
538#endif 1058#endif
539 1059
540/*****************************************************************************/ 1060/*****************************************************************************/
541 1061
1062/* define a suitable floor function (only used by periodics atm) */
1063
1064#if EV_USE_FLOOR
1065# include <math.h>
1066# define ev_floor(v) floor (v)
1067#else
1068
1069#include <float.h>
1070
1071/* a floor() replacement function, should be independent of ev_tstamp type */
1072static ev_tstamp noinline
1073ev_floor (ev_tstamp v)
1074{
1075 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif
1081
1082 /* argument too large for an unsigned long? */
1083 if (expect_false (v >= shift))
1084 {
1085 ev_tstamp f;
1086
1087 if (v == v - 1.)
1088 return v; /* very large number */
1089
1090 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f);
1092 }
1093
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */
1103 return (unsigned long)v;
1104}
1105
1106#endif
1107
1108/*****************************************************************************/
1109
1110#ifdef __linux
1111# include <sys/utsname.h>
1112#endif
1113
1114static unsigned int noinline ecb_cold
1115ev_linux_version (void)
1116{
1117#ifdef __linux
1118 unsigned int v = 0;
1119 struct utsname buf;
1120 int i;
1121 char *p = buf.release;
1122
1123 if (uname (&buf))
1124 return 0;
1125
1126 for (i = 3+1; --i; )
1127 {
1128 unsigned int c = 0;
1129
1130 for (;;)
1131 {
1132 if (*p >= '0' && *p <= '9')
1133 c = c * 10 + *p++ - '0';
1134 else
1135 {
1136 p += *p == '.';
1137 break;
1138 }
1139 }
1140
1141 v = (v << 8) | c;
1142 }
1143
1144 return v;
1145#else
1146 return 0;
1147#endif
1148}
1149
1150/*****************************************************************************/
1151
542#if EV_AVOID_STDIO 1152#if EV_AVOID_STDIO
543static void noinline 1153static void noinline ecb_cold
544ev_printerr (const char *msg) 1154ev_printerr (const char *msg)
545{ 1155{
546 write (STDERR_FILENO, msg, strlen (msg)); 1156 write (STDERR_FILENO, msg, strlen (msg));
547} 1157}
548#endif 1158#endif
549 1159
550static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
551 1161
552void 1162void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1164{
555 syserr_cb = cb; 1165 syserr_cb = cb;
556} 1166}
557 1167
558static void noinline 1168static void noinline ecb_cold
559ev_syserr (const char *msg) 1169ev_syserr (const char *msg)
560{ 1170{
561 if (!msg) 1171 if (!msg)
562 msg = "(libev) system error"; 1172 msg = "(libev) system error";
563 1173
564 if (syserr_cb) 1174 if (syserr_cb)
565 syserr_cb (msg); 1175 syserr_cb (msg);
566 else 1176 else
567 { 1177 {
568#if EV_AVOID_STDIO 1178#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1179 ev_printerr (msg);
572 ev_printerr (": "); 1180 ev_printerr (": ");
573 ev_printerr (err); 1181 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1182 ev_printerr ("\n");
575#else 1183#else
576 perror (msg); 1184 perror (msg);
577#endif 1185#endif
578 abort (); 1186 abort ();
579 } 1187 }
580} 1188}
581 1189
582static void * 1190static void *
583ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1192{
585#if __GLIBC__ 1193#if __GLIBC__
586 return realloc (ptr, size); 1194 return realloc (ptr, size);
587#else 1195#else
588 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
… …
596 free (ptr); 1204 free (ptr);
597 return 0; 1205 return 0;
598#endif 1206#endif
599} 1207}
600 1208
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1210
603void 1211void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1213{
606 alloc = cb; 1214 alloc = cb;
607} 1215}
608 1216
609inline_speed void * 1217inline_speed void *
… …
612 ptr = alloc (ptr, size); 1220 ptr = alloc (ptr, size);
613 1221
614 if (!ptr && size) 1222 if (!ptr && size)
615 { 1223 {
616#if EV_AVOID_STDIO 1224#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1225 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1226#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1227 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1228#endif
621 abort (); 1229 abort ();
622 } 1230 }
623 1231
624 return ptr; 1232 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1249 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1250 unsigned char unused;
643#if EV_USE_EPOLL 1251#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1252 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1253#endif
646#if EV_SELECT_IS_WINSOCKET 1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1255 SOCKET handle;
1256#endif
1257#if EV_USE_IOCP
1258 OVERLAPPED or, ow;
648#endif 1259#endif
649} ANFD; 1260} ANFD;
650 1261
651/* stores the pending event set for a given watcher */ 1262/* stores the pending event set for a given watcher */
652typedef struct 1263typedef struct
… …
694 #undef VAR 1305 #undef VAR
695 }; 1306 };
696 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
697 1308
698 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1311
701#else 1312#else
702 1313
703 ev_tstamp ev_rt_now; 1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1316 #include "ev_vars.h"
706 #undef VAR 1317 #undef VAR
707 1318
708 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1328# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1329# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1331#endif
721 1332
722#define EVUNLOOP_RECURSE 0x80 1333#define EVBREAK_RECURSE 0x80
723 1334
724/*****************************************************************************/ 1335/*****************************************************************************/
725 1336
726#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1338ev_tstamp
728ev_time (void) 1339ev_time (void) EV_THROW
729{ 1340{
730#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
732 { 1343 {
733 struct timespec ts; 1344 struct timespec ts;
… …
757 return ev_time (); 1368 return ev_time ();
758} 1369}
759 1370
760#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
761ev_tstamp 1372ev_tstamp
762ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
763{ 1374{
764 return ev_rt_now; 1375 return ev_rt_now;
765} 1376}
766#endif 1377#endif
767 1378
768void 1379void
769ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
770{ 1381{
771 if (delay > 0.) 1382 if (delay > 0.)
772 { 1383 {
773#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
774 struct timespec ts; 1385 struct timespec ts;
775 1386
776 EV_TS_SET (ts, delay); 1387 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1389#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
780#else 1391#else
781 struct timeval tv; 1392 struct timeval tv;
782 1393
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1413
803 do 1414 do
804 ncur <<= 1; 1415 ncur <<= 1;
805 while (cnt > ncur); 1416 while (cnt > ncur);
806 1417
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1418 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1420 {
810 ncur *= elem; 1421 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1422 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1425 }
815 1426
816 return ncur; 1427 return ncur;
817} 1428}
818 1429
819static noinline void * 1430static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1432{
822 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
824} 1435}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1439
829#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
831 { \ 1442 { \
832 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1447 }
837 1448
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1467{
857} 1468}
858 1469
859void noinline 1470void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1472{
862 W w_ = (W)w; 1473 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
864 1475
865 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
873 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
874} 1487}
875 1488
876inline_speed void 1489inline_speed void
877feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
878{ 1491{
… …
924 if (expect_true (!anfd->reify)) 1537 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1538 fd_event_nocheck (EV_A_ fd, revents);
926} 1539}
927 1540
928void 1541void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1543{
931 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
933} 1546}
934 1547
… …
937inline_size void 1550inline_size void
938fd_reify (EV_P) 1551fd_reify (EV_P)
939{ 1552{
940 int i; 1553 int i;
941 1554
1555#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1556 for (i = 0; i < fdchangecnt; ++i)
1557 {
1558 int fd = fdchanges [i];
1559 ANFD *anfd = anfds + fd;
1560
1561 if (anfd->reify & EV__IOFDSET && anfd->head)
1562 {
1563 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1564
1565 if (handle != anfd->handle)
1566 {
1567 unsigned long arg;
1568
1569 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1570
1571 /* handle changed, but fd didn't - we need to do it in two steps */
1572 backend_modify (EV_A_ fd, anfd->events, 0);
1573 anfd->events = 0;
1574 anfd->handle = handle;
1575 }
1576 }
1577 }
1578#endif
1579
942 for (i = 0; i < fdchangecnt; ++i) 1580 for (i = 0; i < fdchangecnt; ++i)
943 { 1581 {
944 int fd = fdchanges [i]; 1582 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1583 ANFD *anfd = anfds + fd;
946 ev_io *w; 1584 ev_io *w;
947 1585
948 unsigned char events = 0; 1586 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify;
949 1588
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1589 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1590
953#if EV_SELECT_IS_WINSOCKET 1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1592 {
956 unsigned long arg; 1593 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1594
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events;
1597
1598 if (o_events != anfd->events)
1599 o_reify = EV__IOFDSET; /* actually |= */
959 } 1600 }
960#endif
961 1601
962 { 1602 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1603 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1604 }
973 1605
974 fdchangecnt = 0; 1606 fdchangecnt = 0;
975} 1607}
976 1608
… …
988 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
989 } 1621 }
990} 1622}
991 1623
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1625inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
995{ 1627{
996 ev_io *w; 1628 ev_io *w;
997 1629
998 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1634 }
1003} 1635}
1004 1636
1005/* check whether the given fd is actually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1638inline_size int ecb_cold
1007fd_valid (int fd) 1639fd_valid (int fd)
1008{ 1640{
1009#ifdef _WIN32 1641#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1643#else
1012 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
1013#endif 1645#endif
1014} 1646}
1015 1647
1016/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
1017static void noinline 1649static void noinline ecb_cold
1018fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
1019{ 1651{
1020 int fd; 1652 int fd;
1021 1653
1022 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
1026} 1658}
1027 1659
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1660/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1661static void noinline ecb_cold
1030fd_enomem (EV_P) 1662fd_enomem (EV_P)
1031{ 1663{
1032 int fd; 1664 int fd;
1033 1665
1034 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
… …
1229 1861
1230/*****************************************************************************/ 1862/*****************************************************************************/
1231 1863
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 1865
1234static void noinline 1866static void noinline ecb_cold
1235evpipe_init (EV_P) 1867evpipe_init (EV_P)
1236{ 1868{
1237 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1238 { 1870 {
1239# if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
… …
1261 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 } 1895 }
1264} 1896}
1265 1897
1266inline_size void 1898inline_speed void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{ 1900{
1269 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902
1903 if (expect_true (*flag))
1904 return;
1905
1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908
1909 pipe_write_skipped = 1;
1910
1911 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1912
1913 if (pipe_write_wanted)
1270 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1271 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275 1921
1276#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1277 if (evfd >= 0) 1923 if (evfd >= 0)
1278 { 1924 {
1279 uint64_t counter = 1; 1925 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1281 } 1927 }
1282 else 1928 else
1283#endif 1929#endif
1284 /* win32 people keep sending patches that change this write() to send() */ 1930 {
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1931#ifdef _WIN32
1286 /* so when you think this write should be a send instead, please find out */ 1932 WSABUF buf;
1287 /* where your send() is from - it's definitely not the microsoft send, and */ 1933 DWORD sent;
1288 /* tell me. thank you. */ 1934 buf.buf = &buf;
1935 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else
1289 write (evpipe [1], &dummy, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1290 1941
1291 errno = old_errno; 1942 errno = old_errno;
1292 } 1943 }
1293} 1944}
1294 1945
… …
1297static void 1948static void
1298pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1299{ 1950{
1300 int i; 1951 int i;
1301 1952
1953 if (revents & EV_READ)
1954 {
1302#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1303 if (evfd >= 0) 1956 if (evfd >= 0)
1304 { 1957 {
1305 uint64_t counter; 1958 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1307 } 1960 }
1308 else 1961 else
1309#endif 1962#endif
1310 { 1963 {
1311 char dummy; 1964 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1965#ifdef _WIN32
1966 WSABUF buf;
1967 DWORD recvd;
1968 DWORD flags = 0;
1969 buf.buf = dummy;
1970 buf.len = sizeof (dummy);
1971 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1972#else
1313 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1975 }
1314 } 1976 }
1315 1977
1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1981
1982#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 1983 if (sig_pending)
1317 { 1984 {
1318 sig_pending = 0; 1985 sig_pending = 0;
1986
1987 ECB_MEMORY_FENCE;
1319 1988
1320 for (i = EV_NSIG - 1; i--; ) 1989 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 1990 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1323 } 1992 }
1993#endif
1324 1994
1325#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1326 if (async_pending) 1996 if (async_pending)
1327 { 1997 {
1328 async_pending = 0; 1998 async_pending = 0;
1999
2000 ECB_MEMORY_FENCE;
1329 2001
1330 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1332 { 2004 {
1333 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2008 }
1336 } 2009 }
1337#endif 2010#endif
1338} 2011}
1339 2012
1340/*****************************************************************************/ 2013/*****************************************************************************/
1341 2014
2015void
2016ev_feed_signal (int signum) EV_THROW
2017{
2018#if EV_MULTIPLICITY
2019 EV_P = signals [signum - 1].loop;
2020
2021 if (!EV_A)
2022 return;
2023#endif
2024
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending);
2030}
2031
1342static void 2032static void
1343ev_sighandler (int signum) 2033ev_sighandler (int signum)
1344{ 2034{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2035#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2036 signal (signum, ev_sighandler);
1351#endif 2037#endif
1352 2038
1353 signals [signum - 1].pending = 1; 2039 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2040}
1356 2041
1357void noinline 2042void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2044{
1360 WL w; 2045 WL w;
1361 2046
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return; 2048 return;
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2056 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2057 return;
1373#endif 2058#endif
1374 2059
1375 signals [signum].pending = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1376 2062
1377 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2065}
1380 2066
… …
1459 2145
1460#endif 2146#endif
1461 2147
1462/*****************************************************************************/ 2148/*****************************************************************************/
1463 2149
2150#if EV_USE_IOCP
2151# include "ev_iocp.c"
2152#endif
1464#if EV_USE_PORT 2153#if EV_USE_PORT
1465# include "ev_port.c" 2154# include "ev_port.c"
1466#endif 2155#endif
1467#if EV_USE_KQUEUE 2156#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2157# include "ev_kqueue.c"
… …
1475#endif 2164#endif
1476#if EV_USE_SELECT 2165#if EV_USE_SELECT
1477# include "ev_select.c" 2166# include "ev_select.c"
1478#endif 2167#endif
1479 2168
1480int 2169int ecb_cold
1481ev_version_major (void) 2170ev_version_major (void) EV_THROW
1482{ 2171{
1483 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1484} 2173}
1485 2174
1486int 2175int ecb_cold
1487ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1488{ 2177{
1489 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1490} 2179}
1491 2180
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2181/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2182int inline_size ecb_cold
1494enable_secure (void) 2183enable_secure (void)
1495{ 2184{
1496#ifdef _WIN32 2185#ifdef _WIN32
1497 return 0; 2186 return 0;
1498#else 2187#else
1499 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2189 || getgid () != getegid ();
1501#endif 2190#endif
1502} 2191}
1503 2192
1504unsigned int 2193unsigned int ecb_cold
1505ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1506{ 2195{
1507 unsigned int flags = 0; 2196 unsigned int flags = 0;
1508 2197
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2203
1515 return flags; 2204 return flags;
1516} 2205}
1517 2206
1518unsigned int 2207unsigned int ecb_cold
1519ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1520{ 2209{
1521 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1522 2211
1523#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2224#endif
1536 2225
1537 return flags; 2226 return flags;
1538} 2227}
1539 2228
2229unsigned int ecb_cold
2230ev_embeddable_backends (void) EV_THROW
2231{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL;
2237
2238 return flags;
2239}
2240
1540unsigned int 2241unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2242ev_backend (EV_P) EV_THROW
1554{ 2243{
1555 return backend; 2244 return backend;
1556} 2245}
1557 2246
1558#if EV_FEATURE_API 2247#if EV_FEATURE_API
1559unsigned int 2248unsigned int
1560ev_iteration (EV_P) 2249ev_iteration (EV_P) EV_THROW
1561{ 2250{
1562 return loop_count; 2251 return loop_count;
1563} 2252}
1564 2253
1565unsigned int 2254unsigned int
1566ev_depth (EV_P) 2255ev_depth (EV_P) EV_THROW
1567{ 2256{
1568 return loop_depth; 2257 return loop_depth;
1569} 2258}
1570 2259
1571void 2260void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2262{
1574 io_blocktime = interval; 2263 io_blocktime = interval;
1575} 2264}
1576 2265
1577void 2266void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2268{
1580 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1581} 2270}
1582 2271
1583void 2272void
1584ev_set_userdata (EV_P_ void *data) 2273ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2274{
1586 userdata = data; 2275 userdata = data;
1587} 2276}
1588 2277
1589void * 2278void *
1590ev_userdata (EV_P) 2279ev_userdata (EV_P) EV_THROW
1591{ 2280{
1592 return userdata; 2281 return userdata;
1593} 2282}
1594 2283
2284void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2286{
1597 invoke_cb = invoke_pending_cb; 2287 invoke_cb = invoke_pending_cb;
1598} 2288}
1599 2289
2290void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2292{
1602 release_cb = release; 2293 release_cb = release;
1603 acquire_cb = acquire; 2294 acquire_cb = acquire;
1604} 2295}
1605#endif 2296#endif
1606 2297
1607/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2299static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2301{
1611 if (!backend) 2302 if (!backend)
1612 { 2303 {
2304 origflags = flags;
2305
1613#if EV_USE_REALTIME 2306#if EV_USE_REALTIME
1614 if (!have_realtime) 2307 if (!have_realtime)
1615 { 2308 {
1616 struct timespec ts; 2309 struct timespec ts;
1617 2310
… …
1639 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2333 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2336
1644 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2338 mn_now = get_clock ();
1646 now_floor = mn_now; 2339 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2340 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2341#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2342 invoke_cb = ev_invoke_pending;
1650#endif 2343#endif
1651 2344
1652 io_blocktime = 0.; 2345 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2346 timeout_blocktime = 0.;
1654 backend = 0; 2347 backend = 0;
1655 backend_fd = -1; 2348 backend_fd = -1;
1656 sig_pending = 0; 2349 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2350#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2351 async_pending = 0;
1659#endif 2352#endif
2353 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0;
1660#if EV_USE_INOTIFY 2355#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2357#endif
1663#if EV_USE_SIGNALFD 2358#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2360#endif
1666 2361
1667 if (!(flags & 0x0000ffffU)) 2362 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1669 2364
2365#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif
1670#if EV_USE_PORT 2368#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2370#endif
1673#if EV_USE_KQUEUE 2371#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2389#endif
1692 } 2390 }
1693} 2391}
1694 2392
1695/* free up a loop structure */ 2393/* free up a loop structure */
1696static void noinline 2394void ecb_cold
1697loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1698{ 2396{
1699 int i; 2397 int i;
2398
2399#if EV_MULTIPLICITY
2400 /* mimic free (0) */
2401 if (!EV_A)
2402 return;
2403#endif
2404
2405#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt))
2408 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING;
2411 }
2412#endif
2413
2414#if EV_CHILD_ENABLE
2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2416 {
2417 ev_ref (EV_A); /* child watcher */
2418 ev_signal_stop (EV_A_ &childev);
2419 }
2420#endif
1700 2421
1701 if (ev_is_active (&pipe_w)) 2422 if (ev_is_active (&pipe_w))
1702 { 2423 {
1703 /*ev_ref (EV_A);*/ 2424 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2425 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1726#endif 2447#endif
1727 2448
1728 if (backend_fd >= 0) 2449 if (backend_fd >= 0)
1729 close (backend_fd); 2450 close (backend_fd);
1730 2451
2452#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif
1731#if EV_USE_PORT 2455#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2457#endif
1734#if EV_USE_KQUEUE 2458#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2486 array_free (periodic, EMPTY);
1763#endif 2487#endif
1764#if EV_FORK_ENABLE 2488#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2489 array_free (fork, EMPTY);
1766#endif 2490#endif
2491#if EV_CLEANUP_ENABLE
2492 array_free (cleanup, EMPTY);
2493#endif
1767 array_free (prepare, EMPTY); 2494 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2495 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2496#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2497 array_free (async, EMPTY);
1771#endif 2498#endif
1772 2499
1773 backend = 0; 2500 backend = 0;
2501
2502#if EV_MULTIPLICITY
2503 if (ev_is_default_loop (EV_A))
2504#endif
2505 ev_default_loop_ptr = 0;
2506#if EV_MULTIPLICITY
2507 else
2508 ev_free (EV_A);
2509#endif
1774} 2510}
1775 2511
1776#if EV_USE_INOTIFY 2512#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2513inline_size void infy_fork (EV_P);
1778#endif 2514#endif
… …
1793 infy_fork (EV_A); 2529 infy_fork (EV_A);
1794#endif 2530#endif
1795 2531
1796 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1797 { 2533 {
1798 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2535
1805 ev_ref (EV_A); 2536 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1807 2538
1808#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
… …
1826 postfork = 0; 2557 postfork = 0;
1827} 2558}
1828 2559
1829#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1830 2561
1831struct ev_loop * 2562struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1833{ 2564{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2566
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
1838 2569
1839 if (ev_backend (EV_A)) 2570 if (ev_backend (EV_A))
1840 return EV_A; 2571 return EV_A;
1841 2572
2573 ev_free (EV_A);
1842 return 0; 2574 return 0;
1843} 2575}
1844 2576
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2577#endif /* multiplicity */
1858 2578
1859#if EV_VERIFY 2579#if EV_VERIFY
1860static void noinline 2580static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
1862{ 2582{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2584
1865 if (w->pending) 2585 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2587}
1868 2588
1869static void noinline 2589static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2591{
1872 int i; 2592 int i;
1873 2593
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2599
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2601 }
1882} 2602}
1883 2603
1884static void noinline 2604static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
1886{ 2606{
1887 while (cnt--) 2607 while (cnt--)
1888 { 2608 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2611 }
1892} 2612}
1893#endif 2613#endif
1894 2614
1895#if EV_FEATURE_API 2615#if EV_FEATURE_API
1896void 2616void ecb_cold
1897ev_verify (EV_P) 2617ev_verify (EV_P) EV_THROW
1898{ 2618{
1899#if EV_VERIFY 2619#if EV_VERIFY
1900 int i; 2620 int i;
1901 WL w; 2621 WL w, w2;
1902 2622
1903 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
1904 2624
1905 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2628
1909 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
1911 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2635 {
1913 verify_watcher (EV_A_ (W)w); 2636 verify_watcher (EV_A_ (W)w);
2637
2638 if (j++ & 1)
2639 {
2640 assert (("libev: io watcher list contains a loop", w != w2));
2641 w2 = w2->next;
2642 }
2643
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2644 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2645 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2646 }
2647 }
1917 2648
1918 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
1920 2651
1921#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2667#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2668 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2669 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2670#endif
1940 2671
2672#if EV_CLEANUP_ENABLE
2673 assert (cleanupmax >= cleanupcnt);
2674 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2675#endif
2676
1941#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2678 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2679 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2680#endif
1945 2681
… …
1962#endif 2698#endif
1963} 2699}
1964#endif 2700#endif
1965 2701
1966#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
1967struct ev_loop * 2703struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2704#else
1970int 2705int
2706#endif
1971ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2708{
1974 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
1975 { 2710 {
1976#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2731
1997 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
1998} 2733}
1999 2734
2000void 2735void
2001ev_default_destroy (void) 2736ev_loop_fork (EV_P) EV_THROW
2002{ 2737{
2003#if EV_MULTIPLICITY 2738 postfork = 1;
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */
2025} 2739}
2026 2740
2027/*****************************************************************************/ 2741/*****************************************************************************/
2028 2742
2029void 2743void
… …
2031{ 2745{
2032 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
2033} 2747}
2034 2748
2035unsigned int 2749unsigned int
2036ev_pending_count (EV_P) 2750ev_pending_count (EV_P) EV_THROW
2037{ 2751{
2038 int pri; 2752 int pri;
2039 unsigned int count = 0; 2753 unsigned int count = 0;
2040 2754
2041 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
… …
2045} 2759}
2046 2760
2047void noinline 2761void noinline
2048ev_invoke_pending (EV_P) 2762ev_invoke_pending (EV_P)
2049{ 2763{
2050 int pri; 2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2051
2052 for (pri = NUMPRI; pri--; )
2053 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
2054 { 2766 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059 2768
2060 p->w->pending = 0; 2769 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
2063 } 2772 }
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 2834 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 2835 }
2127} 2836}
2128 2837
2129#if EV_PERIODIC_ENABLE 2838#if EV_PERIODIC_ENABLE
2839
2840static void noinline
2841periodic_recalc (EV_P_ ev_periodic *w)
2842{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845
2846 /* the above almost always errs on the low side */
2847 while (at <= ev_rt_now)
2848 {
2849 ev_tstamp nat = at + w->interval;
2850
2851 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at))
2853 {
2854 at = ev_rt_now;
2855 break;
2856 }
2857
2858 at = nat;
2859 }
2860
2861 ev_at (w) = at;
2862}
2863
2130/* make periodics pending */ 2864/* make periodics pending */
2131inline_size void 2865inline_size void
2132periodics_reify (EV_P) 2866periodics_reify (EV_P)
2133{ 2867{
2134 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2135 2869
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 2871 {
2138 int feed_count = 0;
2139
2140 do 2872 do
2141 { 2873 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 2875
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 2885 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 2886 downheap (periodics, periodiccnt, HEAP0);
2155 } 2887 }
2156 else if (w->interval) 2888 else if (w->interval)
2157 { 2889 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2890 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 2891 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 2892 downheap (periodics, periodiccnt, HEAP0);
2174 } 2893 }
2175 else 2894 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2895 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 2903 }
2185} 2904}
2186 2905
2187/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2907/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 2908static void noinline ecb_cold
2190periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
2191{ 2910{
2192 int i; 2911 int i;
2193 2912
2194 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2916 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 2917
2199 if (w->reschedule_cb) 2918 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2919 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 2920 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2921 periodic_recalc (EV_A_ w);
2203 2922
2204 ANHE_at_cache (periodics [i]); 2923 ANHE_at_cache (periodics [i]);
2205 } 2924 }
2206 2925
2207 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
2208} 2927}
2209#endif 2928#endif
2210 2929
2211/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
2212static void noinline 2931static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 2933{
2215 int i; 2934 int i;
2216 2935
2217 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 2973 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 2974 * in the unlikely event of having been preempted here.
2256 */ 2975 */
2257 for (i = 4; --i; ) 2976 for (i = 4; --i; )
2258 { 2977 {
2978 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 2979 rtmn_diff = ev_rt_now - mn_now;
2260 2980
2981 diff = odiff - rtmn_diff;
2982
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 2984 return; /* all is well */
2263 2985
2264 ev_rt_now = ev_time (); 2986 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 2987 mn_now = get_clock ();
2266 now_floor = mn_now; 2988 now_floor = mn_now;
… …
2288 3010
2289 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2290 } 3012 }
2291} 3013}
2292 3014
2293void 3015int
2294ev_loop (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2295{ 3017{
2296#if EV_FEATURE_API 3018#if EV_FEATURE_API
2297 ++loop_depth; 3019 ++loop_depth;
2298#endif 3020#endif
2299 3021
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3022 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3023
2302 loop_done = EVUNLOOP_CANCEL; 3024 loop_done = EVBREAK_CANCEL;
2303 3025
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3026 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3027
2306 do 3028 do
2307 { 3029 {
… …
2350 /* calculate blocking time */ 3072 /* calculate blocking time */
2351 { 3073 {
2352 ev_tstamp waittime = 0.; 3074 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3075 ev_tstamp sleeptime = 0.;
2354 3076
3077 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now;
3079
3080 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100);
3082
3083 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1;
3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3089 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2364 3091
2365 if (timercnt) 3092 if (timercnt)
2366 { 3093 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3095 if (waittime > to) waittime = to;
2369 } 3096 }
2370 3097
2371#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3099 if (periodiccnt)
2373 { 3100 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2376 } 3103 }
2377#endif 3104#endif
2378 3105
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3106 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3107 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3108 waittime = timeout_blocktime;
3109
3110 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime;
2382 3114
2383 /* extra check because io_blocktime is commonly 0 */ 3115 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3116 if (expect_false (io_blocktime))
2385 { 3117 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3118 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3119
2388 if (sleeptime > waittime - backend_fudge) 3120 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3121 sleeptime = waittime - backend_mintime;
2390 3122
2391 if (expect_true (sleeptime > 0.)) 3123 if (expect_true (sleeptime > 0.))
2392 { 3124 {
2393 ev_sleep (sleeptime); 3125 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3126 waittime -= sleeptime;
… …
2397 } 3129 }
2398 3130
2399#if EV_FEATURE_API 3131#if EV_FEATURE_API
2400 ++loop_count; 3132 ++loop_count;
2401#endif 3133#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139
3140 MEMORY_FENCE_ACQUIRE;
3141 if (pipe_write_skipped)
3142 {
3143 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3144 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3145 }
3146
2405 3147
2406 /* update ev_rt_now, do magic */ 3148 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3149 time_update (EV_A_ waittime + sleeptime);
2408 } 3150 }
2409 3151
… …
2427 EV_INVOKE_PENDING; 3169 EV_INVOKE_PENDING;
2428 } 3170 }
2429 while (expect_true ( 3171 while (expect_true (
2430 activecnt 3172 activecnt
2431 && !loop_done 3173 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3174 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3175 ));
2434 3176
2435 if (loop_done == EVUNLOOP_ONE) 3177 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3178 loop_done = EVBREAK_CANCEL;
2437 3179
2438#if EV_FEATURE_API 3180#if EV_FEATURE_API
2439 --loop_depth; 3181 --loop_depth;
2440#endif 3182#endif
3183
3184 return activecnt;
2441} 3185}
2442 3186
2443void 3187void
2444ev_unloop (EV_P_ int how) 3188ev_break (EV_P_ int how) EV_THROW
2445{ 3189{
2446 loop_done = how; 3190 loop_done = how;
2447} 3191}
2448 3192
2449void 3193void
2450ev_ref (EV_P) 3194ev_ref (EV_P) EV_THROW
2451{ 3195{
2452 ++activecnt; 3196 ++activecnt;
2453} 3197}
2454 3198
2455void 3199void
2456ev_unref (EV_P) 3200ev_unref (EV_P) EV_THROW
2457{ 3201{
2458 --activecnt; 3202 --activecnt;
2459} 3203}
2460 3204
2461void 3205void
2462ev_now_update (EV_P) 3206ev_now_update (EV_P) EV_THROW
2463{ 3207{
2464 time_update (EV_A_ 1e100); 3208 time_update (EV_A_ 1e100);
2465} 3209}
2466 3210
2467void 3211void
2468ev_suspend (EV_P) 3212ev_suspend (EV_P) EV_THROW
2469{ 3213{
2470 ev_now_update (EV_A); 3214 ev_now_update (EV_A);
2471} 3215}
2472 3216
2473void 3217void
2474ev_resume (EV_P) 3218ev_resume (EV_P) EV_THROW
2475{ 3219{
2476 ev_tstamp mn_prev = mn_now; 3220 ev_tstamp mn_prev = mn_now;
2477 3221
2478 ev_now_update (EV_A); 3222 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3223 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3262 w->pending = 0;
2519 } 3263 }
2520} 3264}
2521 3265
2522int 3266int
2523ev_clear_pending (EV_P_ void *w) 3267ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3268{
2525 W w_ = (W)w; 3269 W w_ = (W)w;
2526 int pending = w_->pending; 3270 int pending = w_->pending;
2527 3271
2528 if (expect_true (pending)) 3272 if (expect_true (pending))
… …
2561} 3305}
2562 3306
2563/*****************************************************************************/ 3307/*****************************************************************************/
2564 3308
2565void noinline 3309void noinline
2566ev_io_start (EV_P_ ev_io *w) 3310ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3311{
2568 int fd = w->fd; 3312 int fd = w->fd;
2569 3313
2570 if (expect_false (ev_is_active (w))) 3314 if (expect_false (ev_is_active (w)))
2571 return; 3315 return;
… …
2577 3321
2578 ev_start (EV_A_ (W)w, 1); 3322 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3323 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3324 wlist_add (&anfds[fd].head, (WL)w);
2581 3325
3326 /* common bug, apparently */
3327 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3328
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3329 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3330 w->events &= ~EV__IOFDSET;
2584 3331
2585 EV_FREQUENT_CHECK; 3332 EV_FREQUENT_CHECK;
2586} 3333}
2587 3334
2588void noinline 3335void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3336ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3337{
2591 clear_pending (EV_A_ (W)w); 3338 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3339 if (expect_false (!ev_is_active (w)))
2593 return; 3340 return;
2594 3341
… …
2597 EV_FREQUENT_CHECK; 3344 EV_FREQUENT_CHECK;
2598 3345
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3346 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
2601 3348
2602 fd_change (EV_A_ w->fd, 1); 3349 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3350
2604 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2605} 3352}
2606 3353
2607void noinline 3354void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3355ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3356{
2610 if (expect_false (ev_is_active (w))) 3357 if (expect_false (ev_is_active (w)))
2611 return; 3358 return;
2612 3359
2613 ev_at (w) += mn_now; 3360 ev_at (w) += mn_now;
… …
2627 3374
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3375 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3376}
2630 3377
2631void noinline 3378void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3379ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3380{
2634 clear_pending (EV_A_ (W)w); 3381 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3382 if (expect_false (!ev_is_active (w)))
2636 return; 3383 return;
2637 3384
… …
2657 3404
2658 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2659} 3406}
2660 3407
2661void noinline 3408void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3409ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3410{
2664 EV_FREQUENT_CHECK; 3411 EV_FREQUENT_CHECK;
3412
3413 clear_pending (EV_A_ (W)w);
2665 3414
2666 if (ev_is_active (w)) 3415 if (ev_is_active (w))
2667 { 3416 {
2668 if (w->repeat) 3417 if (w->repeat)
2669 { 3418 {
… …
2682 3431
2683 EV_FREQUENT_CHECK; 3432 EV_FREQUENT_CHECK;
2684} 3433}
2685 3434
2686ev_tstamp 3435ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3436ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3437{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3438 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3439}
2691 3440
2692#if EV_PERIODIC_ENABLE 3441#if EV_PERIODIC_ENABLE
2693void noinline 3442void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3443ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3444{
2696 if (expect_false (ev_is_active (w))) 3445 if (expect_false (ev_is_active (w)))
2697 return; 3446 return;
2698 3447
2699 if (w->reschedule_cb) 3448 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3449 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3450 else if (w->interval)
2702 { 3451 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3452 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3453 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3454 }
2707 else 3455 else
2708 ev_at (w) = w->offset; 3456 ev_at (w) = w->offset;
2709 3457
2710 EV_FREQUENT_CHECK; 3458 EV_FREQUENT_CHECK;
… …
2720 3468
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3469 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3470}
2723 3471
2724void noinline 3472void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3473ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3474{
2727 clear_pending (EV_A_ (W)w); 3475 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3476 if (expect_false (!ev_is_active (w)))
2729 return; 3477 return;
2730 3478
… …
2748 3496
2749 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2750} 3498}
2751 3499
2752void noinline 3500void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3501ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3502{
2755 /* TODO: use adjustheap and recalculation */ 3503 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3504 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3505 ev_periodic_start (EV_A_ w);
2758} 3506}
… …
2763#endif 3511#endif
2764 3512
2765#if EV_SIGNAL_ENABLE 3513#if EV_SIGNAL_ENABLE
2766 3514
2767void noinline 3515void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3516ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3517{
2770 if (expect_false (ev_is_active (w))) 3518 if (expect_false (ev_is_active (w)))
2771 return; 3519 return;
2772 3520
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3521 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2831 sa.sa_handler = ev_sighandler; 3579 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3580 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3581 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3582 sigaction (w->signum, &sa, 0);
2835 3583
3584 if (origflags & EVFLAG_NOSIGMASK)
3585 {
2836 sigemptyset (&sa.sa_mask); 3586 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3587 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3588 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3589 }
2839#endif 3590#endif
2840 } 3591 }
2841 3592
2842 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2843} 3594}
2844 3595
2845void noinline 3596void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3597ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3598{
2848 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
2850 return; 3601 return;
2851 3602
… …
2882#endif 3633#endif
2883 3634
2884#if EV_CHILD_ENABLE 3635#if EV_CHILD_ENABLE
2885 3636
2886void 3637void
2887ev_child_start (EV_P_ ev_child *w) 3638ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3639{
2889#if EV_MULTIPLICITY 3640#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3642#endif
2892 if (expect_false (ev_is_active (w))) 3643 if (expect_false (ev_is_active (w)))
… …
2899 3650
2900 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2901} 3652}
2902 3653
2903void 3654void
2904ev_child_stop (EV_P_ ev_child *w) 3655ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3656{
2906 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
2908 return; 3659 return;
2909 3660
… …
2984 if (!pend || pend == path) 3735 if (!pend || pend == path)
2985 break; 3736 break;
2986 3737
2987 *pend = 0; 3738 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3739 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3740 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3741 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3742 }
2992 } 3743 }
2993 3744
2994 if (w->wd >= 0) 3745 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3812 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 3813 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 3814 }
3064} 3815}
3065 3816
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 3817inline_size void ecb_cold
3099ev_check_2625 (EV_P) 3818ev_check_2625 (EV_P)
3100{ 3819{
3101 /* kernels < 2.6.25 are borked 3820 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3821 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 3822 */
… …
3108} 3827}
3109 3828
3110inline_size int 3829inline_size int
3111infy_newfd (void) 3830infy_newfd (void)
3112{ 3831{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3832#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3833 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 3834 if (fd >= 0)
3116 return fd; 3835 return fd;
3117#endif 3836#endif
3118 return inotify_init (); 3837 return inotify_init ();
… …
3193#else 3912#else
3194# define EV_LSTAT(p,b) lstat (p, b) 3913# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 3914#endif
3196 3915
3197void 3916void
3198ev_stat_stat (EV_P_ ev_stat *w) 3917ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 3918{
3200 if (lstat (w->path, &w->attr) < 0) 3919 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 3920 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 3921 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 3922 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 3961 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 3962 }
3244} 3963}
3245 3964
3246void 3965void
3247ev_stat_start (EV_P_ ev_stat *w) 3966ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 3967{
3249 if (expect_false (ev_is_active (w))) 3968 if (expect_false (ev_is_active (w)))
3250 return; 3969 return;
3251 3970
3252 ev_stat_stat (EV_A_ w); 3971 ev_stat_stat (EV_A_ w);
… …
3273 3992
3274 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
3275} 3994}
3276 3995
3277void 3996void
3278ev_stat_stop (EV_P_ ev_stat *w) 3997ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 3998{
3280 clear_pending (EV_A_ (W)w); 3999 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4000 if (expect_false (!ev_is_active (w)))
3282 return; 4001 return;
3283 4002
… …
3299} 4018}
3300#endif 4019#endif
3301 4020
3302#if EV_IDLE_ENABLE 4021#if EV_IDLE_ENABLE
3303void 4022void
3304ev_idle_start (EV_P_ ev_idle *w) 4023ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4024{
3306 if (expect_false (ev_is_active (w))) 4025 if (expect_false (ev_is_active (w)))
3307 return; 4026 return;
3308 4027
3309 pri_adjust (EV_A_ (W)w); 4028 pri_adjust (EV_A_ (W)w);
… …
3322 4041
3323 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
3324} 4043}
3325 4044
3326void 4045void
3327ev_idle_stop (EV_P_ ev_idle *w) 4046ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4047{
3329 clear_pending (EV_A_ (W)w); 4048 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4049 if (expect_false (!ev_is_active (w)))
3331 return; 4050 return;
3332 4051
… …
3346} 4065}
3347#endif 4066#endif
3348 4067
3349#if EV_PREPARE_ENABLE 4068#if EV_PREPARE_ENABLE
3350void 4069void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4070ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4071{
3353 if (expect_false (ev_is_active (w))) 4072 if (expect_false (ev_is_active (w)))
3354 return; 4073 return;
3355 4074
3356 EV_FREQUENT_CHECK; 4075 EV_FREQUENT_CHECK;
… …
3361 4080
3362 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3363} 4082}
3364 4083
3365void 4084void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4085ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4086{
3368 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
3370 return; 4089 return;
3371 4090
… …
3384} 4103}
3385#endif 4104#endif
3386 4105
3387#if EV_CHECK_ENABLE 4106#if EV_CHECK_ENABLE
3388void 4107void
3389ev_check_start (EV_P_ ev_check *w) 4108ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4109{
3391 if (expect_false (ev_is_active (w))) 4110 if (expect_false (ev_is_active (w)))
3392 return; 4111 return;
3393 4112
3394 EV_FREQUENT_CHECK; 4113 EV_FREQUENT_CHECK;
… …
3399 4118
3400 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3401} 4120}
3402 4121
3403void 4122void
3404ev_check_stop (EV_P_ ev_check *w) 4123ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4124{
3406 clear_pending (EV_A_ (W)w); 4125 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4126 if (expect_false (!ev_is_active (w)))
3408 return; 4127 return;
3409 4128
… …
3422} 4141}
3423#endif 4142#endif
3424 4143
3425#if EV_EMBED_ENABLE 4144#if EV_EMBED_ENABLE
3426void noinline 4145void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4146ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4147{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4148 ev_run (w->other, EVRUN_NOWAIT);
3430} 4149}
3431 4150
3432static void 4151static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4152embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4153{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4154 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4155
3437 if (ev_cb (w)) 4156 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4157 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4158 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4159 ev_run (w->other, EVRUN_NOWAIT);
3441} 4160}
3442 4161
3443static void 4162static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4163embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4164{
… …
3449 EV_P = w->other; 4168 EV_P = w->other;
3450 4169
3451 while (fdchangecnt) 4170 while (fdchangecnt)
3452 { 4171 {
3453 fd_reify (EV_A); 4172 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4173 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4174 }
3456 } 4175 }
3457} 4176}
3458 4177
3459static void 4178static void
… …
3465 4184
3466 { 4185 {
3467 EV_P = w->other; 4186 EV_P = w->other;
3468 4187
3469 ev_loop_fork (EV_A); 4188 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4189 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4190 }
3472 4191
3473 ev_embed_start (EV_A_ w); 4192 ev_embed_start (EV_A_ w);
3474} 4193}
3475 4194
… …
3480 ev_idle_stop (EV_A_ idle); 4199 ev_idle_stop (EV_A_ idle);
3481} 4200}
3482#endif 4201#endif
3483 4202
3484void 4203void
3485ev_embed_start (EV_P_ ev_embed *w) 4204ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4205{
3487 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
3488 return; 4207 return;
3489 4208
3490 { 4209 {
… …
3511 4230
3512 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3513} 4232}
3514 4233
3515void 4234void
3516ev_embed_stop (EV_P_ ev_embed *w) 4235ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4236{
3518 clear_pending (EV_A_ (W)w); 4237 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4238 if (expect_false (!ev_is_active (w)))
3520 return; 4239 return;
3521 4240
… …
3531} 4250}
3532#endif 4251#endif
3533 4252
3534#if EV_FORK_ENABLE 4253#if EV_FORK_ENABLE
3535void 4254void
3536ev_fork_start (EV_P_ ev_fork *w) 4255ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4256{
3538 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
3539 return; 4258 return;
3540 4259
3541 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
… …
3546 4265
3547 EV_FREQUENT_CHECK; 4266 EV_FREQUENT_CHECK;
3548} 4267}
3549 4268
3550void 4269void
3551ev_fork_stop (EV_P_ ev_fork *w) 4270ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4271{
3553 clear_pending (EV_A_ (W)w); 4272 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4273 if (expect_false (!ev_is_active (w)))
3555 return; 4274 return;
3556 4275
… …
3567 4286
3568 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3569} 4288}
3570#endif 4289#endif
3571 4290
4291#if EV_CLEANUP_ENABLE
4292void
4293ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4294{
4295 if (expect_false (ev_is_active (w)))
4296 return;
4297
4298 EV_FREQUENT_CHECK;
4299
4300 ev_start (EV_A_ (W)w, ++cleanupcnt);
4301 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4302 cleanups [cleanupcnt - 1] = w;
4303
4304 /* cleanup watchers should never keep a refcount on the loop */
4305 ev_unref (EV_A);
4306 EV_FREQUENT_CHECK;
4307}
4308
4309void
4310ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4311{
4312 clear_pending (EV_A_ (W)w);
4313 if (expect_false (!ev_is_active (w)))
4314 return;
4315
4316 EV_FREQUENT_CHECK;
4317 ev_ref (EV_A);
4318
4319 {
4320 int active = ev_active (w);
4321
4322 cleanups [active - 1] = cleanups [--cleanupcnt];
4323 ev_active (cleanups [active - 1]) = active;
4324 }
4325
4326 ev_stop (EV_A_ (W)w);
4327
4328 EV_FREQUENT_CHECK;
4329}
4330#endif
4331
3572#if EV_ASYNC_ENABLE 4332#if EV_ASYNC_ENABLE
3573void 4333void
3574ev_async_start (EV_P_ ev_async *w) 4334ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4335{
3576 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
3577 return; 4337 return;
4338
4339 w->sent = 0;
3578 4340
3579 evpipe_init (EV_A); 4341 evpipe_init (EV_A);
3580 4342
3581 EV_FREQUENT_CHECK; 4343 EV_FREQUENT_CHECK;
3582 4344
… …
3586 4348
3587 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3588} 4350}
3589 4351
3590void 4352void
3591ev_async_stop (EV_P_ ev_async *w) 4353ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4354{
3593 clear_pending (EV_A_ (W)w); 4355 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4356 if (expect_false (!ev_is_active (w)))
3595 return; 4357 return;
3596 4358
… …
3607 4369
3608 EV_FREQUENT_CHECK; 4370 EV_FREQUENT_CHECK;
3609} 4371}
3610 4372
3611void 4373void
3612ev_async_send (EV_P_ ev_async *w) 4374ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4375{
3614 w->sent = 1; 4376 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4377 evpipe_write (EV_A_ &async_pending);
3616} 4378}
3617#endif 4379#endif
… …
3654 4416
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4417 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4418}
3657 4419
3658void 4420void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4421ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4422{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4423 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4424
3663 if (expect_false (!once)) 4425 if (expect_false (!once))
3664 { 4426 {
… …
3685} 4447}
3686 4448
3687/*****************************************************************************/ 4449/*****************************************************************************/
3688 4450
3689#if EV_WALK_ENABLE 4451#if EV_WALK_ENABLE
3690void 4452void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4453ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4454{
3693 int i, j; 4455 int i, j;
3694 ev_watcher_list *wl, *wn; 4456 ev_watcher_list *wl, *wn;
3695 4457
3696 if (types & (EV_IO | EV_EMBED)) 4458 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4501 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4502#endif
3741 4503
3742#if EV_IDLE_ENABLE 4504#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4505 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4506 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4507 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4508 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4509#endif
3748 4510
3749#if EV_FORK_ENABLE 4511#if EV_FORK_ENABLE
… …
3802 4564
3803#if EV_MULTIPLICITY 4565#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4566 #include "ev_wrap.h"
3805#endif 4567#endif
3806 4568
3807#ifdef __cplusplus
3808}
3809#endif
3810

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