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Comparing libev/ev.c (file contents):
Revision 1.347 by root, Fri Oct 15 22:44:41 2010 UTC vs.
Revision 1.442 by root, Thu May 31 15:47:59 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; tv.tv_nsec = (long)((t - tv.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_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
490#define inline_size static inline 1013#define inline_size ecb_inline
491 1014
492#if EV_FEATURE_CODE 1015#if EV_FEATURE_CODE
493# define inline_speed static inline 1016# define inline_speed ecb_inline
494#else 1017#else
495# define inline_speed static noinline 1018# define inline_speed static noinline
496#endif 1019#endif
497 1020
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1060# include "ev_win32.c"
538#endif 1061#endif
539 1062
540/*****************************************************************************/ 1063/*****************************************************************************/
541 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
542#if EV_AVOID_STDIO 1155#if EV_AVOID_STDIO
543static void noinline 1156static void noinline ecb_cold
544ev_printerr (const char *msg) 1157ev_printerr (const char *msg)
545{ 1158{
546 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
547} 1160}
548#endif 1161#endif
549 1162
550static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
551 1164
552void 1165void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1167{
555 syserr_cb = cb; 1168 syserr_cb = cb;
556} 1169}
557 1170
558static void noinline 1171static void noinline ecb_cold
559ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
560{ 1173{
561 if (!msg) 1174 if (!msg)
562 msg = "(libev) system error"; 1175 msg = "(libev) system error";
563 1176
564 if (syserr_cb) 1177 if (syserr_cb)
565 syserr_cb (msg); 1178 syserr_cb (msg);
566 else 1179 else
567 { 1180 {
568#if EV_AVOID_STDIO 1181#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1182 ev_printerr (msg);
572 ev_printerr (": "); 1183 ev_printerr (": ");
573 ev_printerr (err); 1184 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1185 ev_printerr ("\n");
575#else 1186#else
576 perror (msg); 1187 perror (msg);
577#endif 1188#endif
578 abort (); 1189 abort ();
579 } 1190 }
580} 1191}
581 1192
582static void * 1193static void *
583ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1195{
585#if __GLIBC__ 1196#if __GLIBC__
586 return realloc (ptr, size); 1197 return realloc (ptr, size);
587#else 1198#else
588 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
… …
596 free (ptr); 1207 free (ptr);
597 return 0; 1208 return 0;
598#endif 1209#endif
599} 1210}
600 1211
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1213
603void 1214void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1216{
606 alloc = cb; 1217 alloc = cb;
607} 1218}
608 1219
609inline_speed void * 1220inline_speed void *
… …
612 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
613 1224
614 if (!ptr && size) 1225 if (!ptr && size)
615 { 1226 {
616#if EV_AVOID_STDIO 1227#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1229#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1231#endif
621 abort (); 1232 abort ();
622 } 1233 }
623 1234
624 return ptr; 1235 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1253 unsigned char unused;
643#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1256#endif
646#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
648#endif 1262#endif
649} ANFD; 1263} ANFD;
650 1264
651/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
652typedef struct 1266typedef struct
… …
694 #undef VAR 1308 #undef VAR
695 }; 1309 };
696 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
697 1311
698 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1314
701#else 1315#else
702 1316
703 ev_tstamp ev_rt_now; 1317 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; 1318 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1319 #include "ev_vars.h"
706 #undef VAR 1320 #undef VAR
707 1321
708 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1331# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1332# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1334#endif
721 1335
722#define EVUNLOOP_RECURSE 0x80 1336#define EVBREAK_RECURSE 0x80
723 1337
724/*****************************************************************************/ 1338/*****************************************************************************/
725 1339
726#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1341ev_tstamp
728ev_time (void) 1342ev_time (void) EV_THROW
729{ 1343{
730#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
732 { 1346 {
733 struct timespec ts; 1347 struct timespec ts;
… …
757 return ev_time (); 1371 return ev_time ();
758} 1372}
759 1373
760#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
761ev_tstamp 1375ev_tstamp
762ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
763{ 1377{
764 return ev_rt_now; 1378 return ev_rt_now;
765} 1379}
766#endif 1380#endif
767 1381
768void 1382void
769ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
770{ 1384{
771 if (delay > 0.) 1385 if (delay > 0.)
772 { 1386 {
773#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
774 struct timespec ts; 1388 struct timespec ts;
775 1389
776 EV_SET_TS (ts, delay); 1390 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1392#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
780#else 1394#else
781 struct timeval tv; 1395 struct timeval tv;
782 1396
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 1399 /* by older ones */
786 EV_SET_TV (tv, delay); 1400 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
788#endif 1402#endif
789 } 1403 }
790} 1404}
791 1405
… …
802 1416
803 do 1417 do
804 ncur <<= 1; 1418 ncur <<= 1;
805 while (cnt > ncur); 1419 while (cnt > ncur);
806 1420
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1423 {
810 ncur *= elem; 1424 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1428 }
815 1429
816 return ncur; 1430 return ncur;
817} 1431}
818 1432
819static noinline void * 1433static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1435{
822 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
824} 1438}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1442
829#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
831 { \ 1445 { \
832 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1450 }
837 1451
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1470{
857} 1471}
858 1472
859void noinline 1473void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1475{
862 W w_ = (W)w; 1476 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
864 1478
865 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
873 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
874} 1490}
875 1491
876inline_speed void 1492inline_speed void
877feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
878{ 1494{
… …
924 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
926} 1542}
927 1543
928void 1544void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1546{
931 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
933} 1549}
934 1550
… …
937inline_size void 1553inline_size void
938fd_reify (EV_P) 1554fd_reify (EV_P)
939{ 1555{
940 int i; 1556 int i;
941 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
942 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
943 { 1584 {
944 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
946 ev_io *w; 1587 ev_io *w;
947 1588
948 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
949 1591
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1593
953#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1595 {
956 unsigned long arg; 1596 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1597
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1599 anfd->events |= (unsigned char)w->events;
1600
1601 if (o_events != anfd->events)
1602 o_reify = EV__IOFDSET; /* actually |= */
959 } 1603 }
960#endif
961 1604
962 { 1605 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); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1607 }
973 1608
974 fdchangecnt = 0; 1609 fdchangecnt = 0;
975} 1610}
976 1611
… …
988 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
989 } 1624 }
990} 1625}
991 1626
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1628inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
995{ 1630{
996 ev_io *w; 1631 ev_io *w;
997 1632
998 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1637 }
1003} 1638}
1004 1639
1005/* check whether the given fd is actually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1641inline_size int ecb_cold
1007fd_valid (int fd) 1642fd_valid (int fd)
1008{ 1643{
1009#ifdef _WIN32 1644#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1646#else
1012 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
1013#endif 1648#endif
1014} 1649}
1015 1650
1016/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
1017static void noinline 1652static void noinline ecb_cold
1018fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
1019{ 1654{
1020 int fd; 1655 int fd;
1021 1656
1022 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
1026} 1661}
1027 1662
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1664static void noinline ecb_cold
1030fd_enomem (EV_P) 1665fd_enomem (EV_P)
1031{ 1666{
1032 int fd; 1667 int fd;
1033 1668
1034 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
… …
1229 1864
1230/*****************************************************************************/ 1865/*****************************************************************************/
1231 1866
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 1868
1234static void noinline 1869static void noinline ecb_cold
1235evpipe_init (EV_P) 1870evpipe_init (EV_P)
1236{ 1871{
1237 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1238 { 1873 {
1239# if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
… …
1261 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 } 1898 }
1264} 1899}
1265 1900
1266inline_size void 1901inline_speed void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{ 1903{
1269 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1270 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1271 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275 1924
1276#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1277 if (evfd >= 0) 1926 if (evfd >= 0)
1278 { 1927 {
1279 uint64_t counter = 1; 1928 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1281 } 1930 }
1282 else 1931 else
1283#endif 1932#endif
1284 /* win32 people keep sending patches that change this write() to send() */ 1933 {
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1934#ifdef _WIN32
1286 /* so when you think this write should be a send instead, please find out */ 1935 WSABUF buf;
1287 /* where your send() is from - it's definitely not the microsoft send, and */ 1936 DWORD sent;
1288 /* tell me. thank you. */ 1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1289 write (evpipe [1], &dummy, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1290 1944
1291 errno = old_errno; 1945 errno = old_errno;
1292 } 1946 }
1293} 1947}
1294 1948
… …
1297static void 1951static void
1298pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1299{ 1953{
1300 int i; 1954 int i;
1301 1955
1956 if (revents & EV_READ)
1957 {
1302#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1303 if (evfd >= 0) 1959 if (evfd >= 0)
1304 { 1960 {
1305 uint64_t counter; 1961 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1307 } 1963 }
1308 else 1964 else
1309#endif 1965#endif
1310 { 1966 {
1311 char dummy; 1967 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1313 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1314 } 1979 }
1315 1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 1986 if (sig_pending)
1317 { 1987 {
1318 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1319 1991
1320 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1323 } 1995 }
1996#endif
1324 1997
1325#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1326 if (async_pending) 1999 if (async_pending)
1327 { 2000 {
1328 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1329 2004
1330 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1332 { 2007 {
1333 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2011 }
1336 } 2012 }
1337#endif 2013#endif
1338} 2014}
1339 2015
1340/*****************************************************************************/ 2016/*****************************************************************************/
1341 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1342static void 2035static void
1343ev_sighandler (int signum) 2036ev_sighandler (int signum)
1344{ 2037{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2038#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2039 signal (signum, ev_sighandler);
1351#endif 2040#endif
1352 2041
1353 signals [signum - 1].pending = 1; 2042 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2043}
1356 2044
1357void noinline 2045void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2047{
1360 WL w; 2048 WL w;
1361 2049
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return; 2051 return;
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2060 return;
1373#endif 2061#endif
1374 2062
1375 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1376 2065
1377 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2068}
1380 2069
… …
1459 2148
1460#endif 2149#endif
1461 2150
1462/*****************************************************************************/ 2151/*****************************************************************************/
1463 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1464#if EV_USE_PORT 2156#if EV_USE_PORT
1465# include "ev_port.c" 2157# include "ev_port.c"
1466#endif 2158#endif
1467#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1475#endif 2167#endif
1476#if EV_USE_SELECT 2168#if EV_USE_SELECT
1477# include "ev_select.c" 2169# include "ev_select.c"
1478#endif 2170#endif
1479 2171
1480int 2172int ecb_cold
1481ev_version_major (void) 2173ev_version_major (void) EV_THROW
1482{ 2174{
1483 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1484} 2176}
1485 2177
1486int 2178int ecb_cold
1487ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1488{ 2180{
1489 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1490} 2182}
1491 2183
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2185int inline_size ecb_cold
1494enable_secure (void) 2186enable_secure (void)
1495{ 2187{
1496#ifdef _WIN32 2188#ifdef _WIN32
1497 return 0; 2189 return 0;
1498#else 2190#else
1499 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2192 || getgid () != getegid ();
1501#endif 2193#endif
1502} 2194}
1503 2195
1504unsigned int 2196unsigned int ecb_cold
1505ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1506{ 2198{
1507 unsigned int flags = 0; 2199 unsigned int flags = 0;
1508 2200
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2206
1515 return flags; 2207 return flags;
1516} 2208}
1517 2209
1518unsigned int 2210unsigned int ecb_cold
1519ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1520{ 2212{
1521 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1522 2214
1523#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2227#endif
1536 2228
1537 return flags; 2229 return flags;
1538} 2230}
1539 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1540unsigned int 2244unsigned 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) 2245ev_backend (EV_P) EV_THROW
1554{ 2246{
1555 return backend; 2247 return backend;
1556} 2248}
1557 2249
1558#if EV_FEATURE_API 2250#if EV_FEATURE_API
1559unsigned int 2251unsigned int
1560ev_iteration (EV_P) 2252ev_iteration (EV_P) EV_THROW
1561{ 2253{
1562 return loop_count; 2254 return loop_count;
1563} 2255}
1564 2256
1565unsigned int 2257unsigned int
1566ev_depth (EV_P) 2258ev_depth (EV_P) EV_THROW
1567{ 2259{
1568 return loop_depth; 2260 return loop_depth;
1569} 2261}
1570 2262
1571void 2263void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2265{
1574 io_blocktime = interval; 2266 io_blocktime = interval;
1575} 2267}
1576 2268
1577void 2269void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2271{
1580 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1581} 2273}
1582 2274
1583void 2275void
1584ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2277{
1586 userdata = data; 2278 userdata = data;
1587} 2279}
1588 2280
1589void * 2281void *
1590ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1591{ 2283{
1592 return userdata; 2284 return userdata;
1593} 2285}
1594 2286
2287void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2289{
1597 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1598} 2291}
1599 2292
2293void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2295{
1602 release_cb = release; 2296 release_cb = release;
1603 acquire_cb = acquire; 2297 acquire_cb = acquire;
1604} 2298}
1605#endif 2299#endif
1606 2300
1607/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2302static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2304{
1611 if (!backend) 2305 if (!backend)
1612 { 2306 {
2307 origflags = flags;
2308
1613#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1614 if (!have_realtime) 2310 if (!have_realtime)
1615 { 2311 {
1616 struct timespec ts; 2312 struct timespec ts;
1617 2313
… …
1639 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2336 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2339
1644 ev_rt_now = ev_time (); 2340 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2341 mn_now = get_clock ();
1646 now_floor = mn_now; 2342 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2343 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2344#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2345 invoke_cb = ev_invoke_pending;
1650#endif 2346#endif
1651 2347
1652 io_blocktime = 0.; 2348 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2349 timeout_blocktime = 0.;
1654 backend = 0; 2350 backend = 0;
1655 backend_fd = -1; 2351 backend_fd = -1;
1656 sig_pending = 0; 2352 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2354 async_pending = 0;
1659#endif 2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
1660#if EV_USE_INOTIFY 2358#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2360#endif
1663#if EV_USE_SIGNALFD 2361#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2363#endif
1666 2364
1667 if (!(flags & 0x0000ffffU)) 2365 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1669 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1670#if EV_USE_PORT 2371#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2373#endif
1673#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2392#endif
1692 } 2393 }
1693} 2394}
1694 2395
1695/* free up a loop structure */ 2396/* free up a loop structure */
1696static void noinline 2397void ecb_cold
1697loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1698{ 2399{
1699 int i; 2400 int i;
2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
1700 2424
1701 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1702 { 2426 {
1703 /*ev_ref (EV_A);*/ 2427 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1726#endif 2450#endif
1727 2451
1728 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1729 close (backend_fd); 2453 close (backend_fd);
1730 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1731#if EV_USE_PORT 2458#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2460#endif
1734#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1763#endif 2490#endif
1764#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1766#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1767 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1771#endif 2501#endif
1772 2502
1773 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1774} 2513}
1775 2514
1776#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1778#endif 2517#endif
… …
1793 infy_fork (EV_A); 2532 infy_fork (EV_A);
1794#endif 2533#endif
1795 2534
1796 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1797 { 2536 {
1798 /* this "locks" the handlers against writing to the pipe */ 2537 /* 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 2538
1805 ev_ref (EV_A); 2539 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1807 2541
1808#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1826 postfork = 0; 2560 postfork = 0;
1827} 2561}
1828 2562
1829#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1830 2564
1831struct ev_loop * 2565struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1833{ 2567{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2569
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1838 2572
1839 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1840 return EV_A; 2574 return EV_A;
1841 2575
2576 ev_free (EV_A);
1842 return 0; 2577 return 0;
1843} 2578}
1844 2579
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 */ 2580#endif /* multiplicity */
1858 2581
1859#if EV_VERIFY 2582#if EV_VERIFY
1860static void noinline 2583static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1862{ 2585{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2587
1865 if (w->pending) 2588 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2590}
1868 2591
1869static void noinline 2592static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2594{
1872 int i; 2595 int i;
1873 2596
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2602
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2604 }
1882} 2605}
1883 2606
1884static void noinline 2607static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1886{ 2609{
1887 while (cnt--) 2610 while (cnt--)
1888 { 2611 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2614 }
1892} 2615}
1893#endif 2616#endif
1894 2617
1895#if EV_FEATURE_API 2618#if EV_FEATURE_API
1896void 2619void ecb_cold
1897ev_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1898{ 2621{
1899#if EV_VERIFY 2622#if EV_VERIFY
1900 int i; 2623 int i;
1901 WL w; 2624 WL w, w2;
1902 2625
1903 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1904 2627
1905 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2631
1909 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1911 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2638 {
1913 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 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)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2649 }
2650 }
1917 2651
1918 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1920 2654
1921#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2673#endif
1940 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1941#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2683#endif
1945 2684
… …
1962#endif 2701#endif
1963} 2702}
1964#endif 2703#endif
1965 2704
1966#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1967struct ev_loop * 2706struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2707#else
1970int 2708int
2709#endif
1971ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2711{
1974 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1975 { 2713 {
1976#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2734
1997 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1998} 2736}
1999 2737
2000void 2738void
2001ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
2002{ 2740{
2003#if EV_MULTIPLICITY 2741 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} 2742}
2026 2743
2027/*****************************************************************************/ 2744/*****************************************************************************/
2028 2745
2029void 2746void
… …
2031{ 2748{
2032 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
2033} 2750}
2034 2751
2035unsigned int 2752unsigned int
2036ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
2037{ 2754{
2038 int pri; 2755 int pri;
2039 unsigned int count = 0; 2756 unsigned int count = 0;
2040 2757
2041 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
… …
2045} 2762}
2046 2763
2047void noinline 2764void noinline
2048ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
2049{ 2766{
2050 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2051
2052 for (pri = NUMPRI; pri--; )
2053 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2054 { 2769 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 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 2771
2060 p->w->pending = 0; 2772 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2063 } 2775 }
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 2837 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 2838 }
2127} 2839}
2128 2840
2129#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2130/* make periodics pending */ 2867/* make periodics pending */
2131inline_size void 2868inline_size void
2132periodics_reify (EV_P) 2869periodics_reify (EV_P)
2133{ 2870{
2134 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2135 2872
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 2874 {
2138 int feed_count = 0;
2139
2140 do 2875 do
2141 { 2876 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 2878
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
2155 } 2890 }
2156 else if (w->interval) 2891 else if (w->interval)
2157 { 2892 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 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]); 2894 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
2174 } 2896 }
2175 else 2897 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 2906 }
2185} 2907}
2186 2908
2187/* simply recalculate all periodics */ 2909/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 2911static void noinline ecb_cold
2190periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
2191{ 2913{
2192 int i; 2914 int i;
2193 2915
2194 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 2920
2199 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 2923 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
2203 2925
2204 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
2205 } 2927 }
2206 2928
2207 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
2208} 2930}
2209#endif 2931#endif
2210 2932
2211/* adjust all timers by a given offset */ 2933/* adjust all timers by a given offset */
2212static void noinline 2934static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 2936{
2215 int i; 2937 int i;
2216 2938
2217 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
2256 */ 2978 */
2257 for (i = 4; --i; ) 2979 for (i = 4; --i; )
2258 { 2980 {
2981 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
2260 2983
2984 diff = odiff - rtmn_diff;
2985
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 2987 return; /* all is well */
2263 2988
2264 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 2990 mn_now = get_clock ();
2266 now_floor = mn_now; 2991 now_floor = mn_now;
… …
2288 3013
2289 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2290 } 3015 }
2291} 3016}
2292 3017
2293void 3018int
2294ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2295{ 3020{
2296#if EV_FEATURE_API 3021#if EV_FEATURE_API
2297 ++loop_depth; 3022 ++loop_depth;
2298#endif 3023#endif
2299 3024
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3026
2302 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
2303 3028
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3030
2306 do 3031 do
2307 { 3032 {
… …
2350 /* calculate blocking time */ 3075 /* calculate blocking time */
2351 { 3076 {
2352 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2354 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3092 {
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; 3093 waittime = MAX_BLOCKTIME;
2364 3094
2365 if (timercnt) 3095 if (timercnt)
2366 { 3096 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2369 } 3099 }
2370 3100
2371#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3102 if (periodiccnt)
2373 { 3103 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2376 } 3106 }
2377#endif 3107#endif
2378 3108
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
3112
3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2382 3117
2383 /* extra check because io_blocktime is commonly 0 */ 3118 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3119 if (expect_false (io_blocktime))
2385 { 3120 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3122
2388 if (sleeptime > waittime - backend_fudge) 3123 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3124 sleeptime = waittime - backend_mintime;
2390 3125
2391 if (expect_true (sleeptime > 0.)) 3126 if (expect_true (sleeptime > 0.))
2392 { 3127 {
2393 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3129 waittime -= sleeptime;
… …
2397 } 3132 }
2398 3133
2399#if EV_FEATURE_API 3134#if EV_FEATURE_API
2400 ++loop_count; 3135 ++loop_count;
2401#endif 3136#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 ECB_MEMORY_FENCE_ACQUIRE;
3144 if (pipe_write_skipped)
3145 {
3146 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3147 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3148 }
3149
2405 3150
2406 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2408 } 3153 }
2409 3154
… …
2427 EV_INVOKE_PENDING; 3172 EV_INVOKE_PENDING;
2428 } 3173 }
2429 while (expect_true ( 3174 while (expect_true (
2430 activecnt 3175 activecnt
2431 && !loop_done 3176 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3178 ));
2434 3179
2435 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
2437 3182
2438#if EV_FEATURE_API 3183#if EV_FEATURE_API
2439 --loop_depth; 3184 --loop_depth;
2440#endif 3185#endif
3186
3187 return activecnt;
2441} 3188}
2442 3189
2443void 3190void
2444ev_unloop (EV_P_ int how) 3191ev_break (EV_P_ int how) EV_THROW
2445{ 3192{
2446 loop_done = how; 3193 loop_done = how;
2447} 3194}
2448 3195
2449void 3196void
2450ev_ref (EV_P) 3197ev_ref (EV_P) EV_THROW
2451{ 3198{
2452 ++activecnt; 3199 ++activecnt;
2453} 3200}
2454 3201
2455void 3202void
2456ev_unref (EV_P) 3203ev_unref (EV_P) EV_THROW
2457{ 3204{
2458 --activecnt; 3205 --activecnt;
2459} 3206}
2460 3207
2461void 3208void
2462ev_now_update (EV_P) 3209ev_now_update (EV_P) EV_THROW
2463{ 3210{
2464 time_update (EV_A_ 1e100); 3211 time_update (EV_A_ 1e100);
2465} 3212}
2466 3213
2467void 3214void
2468ev_suspend (EV_P) 3215ev_suspend (EV_P) EV_THROW
2469{ 3216{
2470 ev_now_update (EV_A); 3217 ev_now_update (EV_A);
2471} 3218}
2472 3219
2473void 3220void
2474ev_resume (EV_P) 3221ev_resume (EV_P) EV_THROW
2475{ 3222{
2476 ev_tstamp mn_prev = mn_now; 3223 ev_tstamp mn_prev = mn_now;
2477 3224
2478 ev_now_update (EV_A); 3225 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3226 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3265 w->pending = 0;
2519 } 3266 }
2520} 3267}
2521 3268
2522int 3269int
2523ev_clear_pending (EV_P_ void *w) 3270ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3271{
2525 W w_ = (W)w; 3272 W w_ = (W)w;
2526 int pending = w_->pending; 3273 int pending = w_->pending;
2527 3274
2528 if (expect_true (pending)) 3275 if (expect_true (pending))
… …
2561} 3308}
2562 3309
2563/*****************************************************************************/ 3310/*****************************************************************************/
2564 3311
2565void noinline 3312void noinline
2566ev_io_start (EV_P_ ev_io *w) 3313ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3314{
2568 int fd = w->fd; 3315 int fd = w->fd;
2569 3316
2570 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2571 return; 3318 return;
… …
2577 3324
2578 ev_start (EV_A_ (W)w, 1); 3325 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3326 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3327 wlist_add (&anfds[fd].head, (WL)w);
2581 3328
3329 /* common bug, apparently */
3330 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3331
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3332 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3333 w->events &= ~EV__IOFDSET;
2584 3334
2585 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2586} 3336}
2587 3337
2588void noinline 3338void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3339ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3340{
2591 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2593 return; 3343 return;
2594 3344
… …
2597 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2598 3348
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3349 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3350 ev_stop (EV_A_ (W)w);
2601 3351
2602 fd_change (EV_A_ w->fd, 1); 3352 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3353
2604 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2605} 3355}
2606 3356
2607void noinline 3357void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3358ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3359{
2610 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2611 return; 3361 return;
2612 3362
2613 ev_at (w) += mn_now; 3363 ev_at (w) += mn_now;
… …
2627 3377
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3378 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3379}
2630 3380
2631void noinline 3381void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3382ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3383{
2634 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2636 return; 3386 return;
2637 3387
… …
2657 3407
2658 EV_FREQUENT_CHECK; 3408 EV_FREQUENT_CHECK;
2659} 3409}
2660 3410
2661void noinline 3411void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3412ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3413{
2664 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
3415
3416 clear_pending (EV_A_ (W)w);
2665 3417
2666 if (ev_is_active (w)) 3418 if (ev_is_active (w))
2667 { 3419 {
2668 if (w->repeat) 3420 if (w->repeat)
2669 { 3421 {
… …
2682 3434
2683 EV_FREQUENT_CHECK; 3435 EV_FREQUENT_CHECK;
2684} 3436}
2685 3437
2686ev_tstamp 3438ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3439ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3440{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3441 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3442}
2691 3443
2692#if EV_PERIODIC_ENABLE 3444#if EV_PERIODIC_ENABLE
2693void noinline 3445void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3446ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3447{
2696 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2697 return; 3449 return;
2698 3450
2699 if (w->reschedule_cb) 3451 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3452 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3453 else if (w->interval)
2702 { 3454 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3455 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 */ 3456 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3457 }
2707 else 3458 else
2708 ev_at (w) = w->offset; 3459 ev_at (w) = w->offset;
2709 3460
2710 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2720 3471
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3472 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3473}
2723 3474
2724void noinline 3475void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3476ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3477{
2727 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2729 return; 3480 return;
2730 3481
… …
2748 3499
2749 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2750} 3501}
2751 3502
2752void noinline 3503void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3504ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3505{
2755 /* TODO: use adjustheap and recalculation */ 3506 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3507 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3508 ev_periodic_start (EV_A_ w);
2758} 3509}
… …
2763#endif 3514#endif
2764 3515
2765#if EV_SIGNAL_ENABLE 3516#if EV_SIGNAL_ENABLE
2766 3517
2767void noinline 3518void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3519ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3520{
2770 if (expect_false (ev_is_active (w))) 3521 if (expect_false (ev_is_active (w)))
2771 return; 3522 return;
2772 3523
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3524 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2831 sa.sa_handler = ev_sighandler; 3582 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3583 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3584 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3585 sigaction (w->signum, &sa, 0);
2835 3586
3587 if (origflags & EVFLAG_NOSIGMASK)
3588 {
2836 sigemptyset (&sa.sa_mask); 3589 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3590 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3591 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3592 }
2839#endif 3593#endif
2840 } 3594 }
2841 3595
2842 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2843} 3597}
2844 3598
2845void noinline 3599void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3600ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3601{
2848 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2850 return; 3604 return;
2851 3605
… …
2882#endif 3636#endif
2883 3637
2884#if EV_CHILD_ENABLE 3638#if EV_CHILD_ENABLE
2885 3639
2886void 3640void
2887ev_child_start (EV_P_ ev_child *w) 3641ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3642{
2889#if EV_MULTIPLICITY 3643#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3644 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3645#endif
2892 if (expect_false (ev_is_active (w))) 3646 if (expect_false (ev_is_active (w)))
… …
2899 3653
2900 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2901} 3655}
2902 3656
2903void 3657void
2904ev_child_stop (EV_P_ ev_child *w) 3658ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3659{
2906 clear_pending (EV_A_ (W)w); 3660 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3661 if (expect_false (!ev_is_active (w)))
2908 return; 3662 return;
2909 3663
… …
2984 if (!pend || pend == path) 3738 if (!pend || pend == path)
2985 break; 3739 break;
2986 3740
2987 *pend = 0; 3741 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3742 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3743 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3744 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3745 }
2992 } 3746 }
2993 3747
2994 if (w->wd >= 0) 3748 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3815 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 3816 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 3817 }
3064} 3818}
3065 3819
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 3820inline_size void ecb_cold
3099ev_check_2625 (EV_P) 3821ev_check_2625 (EV_P)
3100{ 3822{
3101 /* kernels < 2.6.25 are borked 3823 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3824 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 3825 */
… …
3108} 3830}
3109 3831
3110inline_size int 3832inline_size int
3111infy_newfd (void) 3833infy_newfd (void)
3112{ 3834{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3835#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3836 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 3837 if (fd >= 0)
3116 return fd; 3838 return fd;
3117#endif 3839#endif
3118 return inotify_init (); 3840 return inotify_init ();
… …
3193#else 3915#else
3194# define EV_LSTAT(p,b) lstat (p, b) 3916# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 3917#endif
3196 3918
3197void 3919void
3198ev_stat_stat (EV_P_ ev_stat *w) 3920ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 3921{
3200 if (lstat (w->path, &w->attr) < 0) 3922 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 3923 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 3924 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 3925 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 3964 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 3965 }
3244} 3966}
3245 3967
3246void 3968void
3247ev_stat_start (EV_P_ ev_stat *w) 3969ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 3970{
3249 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
3250 return; 3972 return;
3251 3973
3252 ev_stat_stat (EV_A_ w); 3974 ev_stat_stat (EV_A_ w);
… …
3273 3995
3274 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
3275} 3997}
3276 3998
3277void 3999void
3278ev_stat_stop (EV_P_ ev_stat *w) 4000ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 4001{
3280 clear_pending (EV_A_ (W)w); 4002 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4003 if (expect_false (!ev_is_active (w)))
3282 return; 4004 return;
3283 4005
… …
3299} 4021}
3300#endif 4022#endif
3301 4023
3302#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
3303void 4025void
3304ev_idle_start (EV_P_ ev_idle *w) 4026ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4027{
3306 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
3307 return; 4029 return;
3308 4030
3309 pri_adjust (EV_A_ (W)w); 4031 pri_adjust (EV_A_ (W)w);
… …
3322 4044
3323 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
3324} 4046}
3325 4047
3326void 4048void
3327ev_idle_stop (EV_P_ ev_idle *w) 4049ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4050{
3329 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
3331 return; 4053 return;
3332 4054
… …
3346} 4068}
3347#endif 4069#endif
3348 4070
3349#if EV_PREPARE_ENABLE 4071#if EV_PREPARE_ENABLE
3350void 4072void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4073ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4074{
3353 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3354 return; 4076 return;
3355 4077
3356 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
… …
3361 4083
3362 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
3363} 4085}
3364 4086
3365void 4087void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4088ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4089{
3368 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4091 if (expect_false (!ev_is_active (w)))
3370 return; 4092 return;
3371 4093
… …
3384} 4106}
3385#endif 4107#endif
3386 4108
3387#if EV_CHECK_ENABLE 4109#if EV_CHECK_ENABLE
3388void 4110void
3389ev_check_start (EV_P_ ev_check *w) 4111ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4112{
3391 if (expect_false (ev_is_active (w))) 4113 if (expect_false (ev_is_active (w)))
3392 return; 4114 return;
3393 4115
3394 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
… …
3399 4121
3400 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
3401} 4123}
3402 4124
3403void 4125void
3404ev_check_stop (EV_P_ ev_check *w) 4126ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4127{
3406 clear_pending (EV_A_ (W)w); 4128 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4129 if (expect_false (!ev_is_active (w)))
3408 return; 4130 return;
3409 4131
… …
3422} 4144}
3423#endif 4145#endif
3424 4146
3425#if EV_EMBED_ENABLE 4147#if EV_EMBED_ENABLE
3426void noinline 4148void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4149ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4150{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4151 ev_run (w->other, EVRUN_NOWAIT);
3430} 4152}
3431 4153
3432static void 4154static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4155embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4156{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4157 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4158
3437 if (ev_cb (w)) 4159 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4160 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4161 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4162 ev_run (w->other, EVRUN_NOWAIT);
3441} 4163}
3442 4164
3443static void 4165static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4166embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4167{
… …
3449 EV_P = w->other; 4171 EV_P = w->other;
3450 4172
3451 while (fdchangecnt) 4173 while (fdchangecnt)
3452 { 4174 {
3453 fd_reify (EV_A); 4175 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4176 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4177 }
3456 } 4178 }
3457} 4179}
3458 4180
3459static void 4181static void
… …
3465 4187
3466 { 4188 {
3467 EV_P = w->other; 4189 EV_P = w->other;
3468 4190
3469 ev_loop_fork (EV_A); 4191 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4192 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4193 }
3472 4194
3473 ev_embed_start (EV_A_ w); 4195 ev_embed_start (EV_A_ w);
3474} 4196}
3475 4197
… …
3480 ev_idle_stop (EV_A_ idle); 4202 ev_idle_stop (EV_A_ idle);
3481} 4203}
3482#endif 4204#endif
3483 4205
3484void 4206void
3485ev_embed_start (EV_P_ ev_embed *w) 4207ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4208{
3487 if (expect_false (ev_is_active (w))) 4209 if (expect_false (ev_is_active (w)))
3488 return; 4210 return;
3489 4211
3490 { 4212 {
… …
3511 4233
3512 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
3513} 4235}
3514 4236
3515void 4237void
3516ev_embed_stop (EV_P_ ev_embed *w) 4238ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4239{
3518 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4241 if (expect_false (!ev_is_active (w)))
3520 return; 4242 return;
3521 4243
… …
3531} 4253}
3532#endif 4254#endif
3533 4255
3534#if EV_FORK_ENABLE 4256#if EV_FORK_ENABLE
3535void 4257void
3536ev_fork_start (EV_P_ ev_fork *w) 4258ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4259{
3538 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
3539 return; 4261 return;
3540 4262
3541 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
… …
3546 4268
3547 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3548} 4270}
3549 4271
3550void 4272void
3551ev_fork_stop (EV_P_ ev_fork *w) 4273ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4274{
3553 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
3555 return; 4277 return;
3556 4278
… …
3567 4289
3568 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
3569} 4291}
3570#endif 4292#endif
3571 4293
4294#if EV_CLEANUP_ENABLE
4295void
4296ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4297{
4298 if (expect_false (ev_is_active (w)))
4299 return;
4300
4301 EV_FREQUENT_CHECK;
4302
4303 ev_start (EV_A_ (W)w, ++cleanupcnt);
4304 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4305 cleanups [cleanupcnt - 1] = w;
4306
4307 /* cleanup watchers should never keep a refcount on the loop */
4308 ev_unref (EV_A);
4309 EV_FREQUENT_CHECK;
4310}
4311
4312void
4313ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4314{
4315 clear_pending (EV_A_ (W)w);
4316 if (expect_false (!ev_is_active (w)))
4317 return;
4318
4319 EV_FREQUENT_CHECK;
4320 ev_ref (EV_A);
4321
4322 {
4323 int active = ev_active (w);
4324
4325 cleanups [active - 1] = cleanups [--cleanupcnt];
4326 ev_active (cleanups [active - 1]) = active;
4327 }
4328
4329 ev_stop (EV_A_ (W)w);
4330
4331 EV_FREQUENT_CHECK;
4332}
4333#endif
4334
3572#if EV_ASYNC_ENABLE 4335#if EV_ASYNC_ENABLE
3573void 4336void
3574ev_async_start (EV_P_ ev_async *w) 4337ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4338{
3576 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3577 return; 4340 return;
4341
4342 w->sent = 0;
3578 4343
3579 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
3580 4345
3581 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3582 4347
… …
3586 4351
3587 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
3588} 4353}
3589 4354
3590void 4355void
3591ev_async_stop (EV_P_ ev_async *w) 4356ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4357{
3593 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
3595 return; 4360 return;
3596 4361
… …
3607 4372
3608 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3609} 4374}
3610 4375
3611void 4376void
3612ev_async_send (EV_P_ ev_async *w) 4377ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4378{
3614 w->sent = 1; 4379 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4380 evpipe_write (EV_A_ &async_pending);
3616} 4381}
3617#endif 4382#endif
… …
3654 4419
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4420 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4421}
3657 4422
3658void 4423void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4424ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4425{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4426 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4427
3663 if (expect_false (!once)) 4428 if (expect_false (!once))
3664 { 4429 {
… …
3685} 4450}
3686 4451
3687/*****************************************************************************/ 4452/*****************************************************************************/
3688 4453
3689#if EV_WALK_ENABLE 4454#if EV_WALK_ENABLE
3690void 4455void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4456ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4457{
3693 int i, j; 4458 int i, j;
3694 ev_watcher_list *wl, *wn; 4459 ev_watcher_list *wl, *wn;
3695 4460
3696 if (types & (EV_IO | EV_EMBED)) 4461 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4504 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4505#endif
3741 4506
3742#if EV_IDLE_ENABLE 4507#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4508 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4509 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4510 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4511 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4512#endif
3748 4513
3749#if EV_FORK_ENABLE 4514#if EV_FORK_ENABLE
… …
3802 4567
3803#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4569 #include "ev_wrap.h"
3805#endif 4570#endif
3806 4571
3807#ifdef __cplusplus
3808}
3809#endif
3810

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