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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.440 by root, Tue May 29 21:37:14 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 452#endif
451#endif
452
453 453
454/**/ 454/**/
455 455
456#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 458#else
459# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
460#endif 460#endif
461 461
462/* 462/*
463 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 465 */
470#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 */
471 468
472#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) */
473#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) */
474 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } 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)
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;
475#if __GNUC__ >= 4 519 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
477# 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;
478#else 536#else
479# define expect(expr,value) (expr) 537 #include <inttypes.h>
480# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
482# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
483# 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)))
484#endif 557 #endif
558#endif
485 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573 #define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32
632 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
639 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync ()
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif
653#endif
654
655#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS
657 /*
658 * if you get undefined symbol references to pthread_mutex_lock,
659 * or failure to find pthread.h, then you should implement
660 * the ECB_MEMORY_FENCE operations for your cpu/compiler
661 * OR provide pthread.h and link against the posix thread library
662 * of your system.
663 */
664 #include <pthread.h>
665 #define ECB_NEEDS_PTHREADS 1
666 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
667
668 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
669 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
670 #endif
671#endif
672
673#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
674 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
675#endif
676
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif
680
681/*****************************************************************************/
682
683#if __cplusplus
684 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__
687#elif ECB_C99
688 #define ecb_inline static inline
689#else
690 #define ecb_inline static
691#endif
692
693#if ECB_GCC_VERSION(3,3)
694 #define ecb_restrict __restrict__
695#elif ECB_C99
696 #define ecb_restrict restrict
697#else
698 #define ecb_restrict
699#endif
700
701typedef int ecb_bool;
702
703#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
707
708#define ecb_function_ ecb_inline
709
710#if ECB_GCC_VERSION(3,1)
711 #define ecb_attribute(attrlist) __attribute__(attrlist)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality)
720#endif
721
722/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5)
724 #define ecb_decltype(x) __decltype(x)
725#elif ECB_GCC_VERSION(3,0)
726 #define ecb_decltype(x) __typeof(x)
727#endif
728
729#define ecb_noinline ecb_attribute ((__noinline__))
730#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__))
733
734#if ECB_C11
735 #define ecb_noreturn _Noreturn
736#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif
739
740#if ECB_GCC_VERSION(4,3)
741 #define ecb_artificial ecb_attribute ((__artificial__))
742 #define ecb_hot ecb_attribute ((__hot__))
743 #define ecb_cold ecb_attribute ((__cold__))
744#else
745 #define ecb_artificial
746 #define ecb_hot
747 #define ecb_cold
748#endif
749
750/* put around conditional expressions if you are very sure that the */
751/* expression is mostly true or mostly false. note that these return */
752/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
755/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr)
758
759/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4)
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */
768#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
770 ecb_function_ int
771 ecb_ctz32 (uint32_t x)
772 {
773 int r = 0;
774
775 x &= ~x + 1; /* this isolates the lowest bit */
776
777#if ECB_branchless_on_i386
778 r += !!(x & 0xaaaaaaaa) << 0;
779 r += !!(x & 0xcccccccc) << 1;
780 r += !!(x & 0xf0f0f0f0) << 2;
781 r += !!(x & 0xff00ff00) << 3;
782 r += !!(x & 0xffff0000) << 4;
783#else
784 if (x & 0xaaaaaaaa) r += 1;
785 if (x & 0xcccccccc) r += 2;
786 if (x & 0xf0f0f0f0) r += 4;
787 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16;
789#endif
790
791 return r;
792 }
793
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
795 ecb_function_ int
796 ecb_ctz64 (uint64_t x)
797 {
798 int shift = x & 0xffffffffU ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift;
800 }
801
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
803 ecb_function_ int
804 ecb_popcount32 (uint32_t x)
805 {
806 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101;
810
811 return x >> 24;
812 }
813
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
815 ecb_function_ int ecb_ld32 (uint32_t x)
816 {
817 int r = 0;
818
819 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; }
824
825 return r;
826 }
827
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
829 ecb_function_ int ecb_ld64 (uint64_t x)
830 {
831 int r = 0;
832
833 if (x >> 32) { x >>= 32; r += 32; }
834
835 return r + ecb_ld32 (x);
836 }
837#endif
838
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
846{
847 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849}
850
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
853{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8);
858
859 return x;
860}
861
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
864{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
869 x = ( x >> 16 ) | ( x << 16);
870
871 return x;
872}
873
874/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
877ecb_function_ int
878ecb_popcount64 (uint64_t x)
879{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881}
882
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
891
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
903 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x)
905#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
907 ecb_function_ uint16_t
908 ecb_bswap16 (uint16_t x)
909 {
910 return ecb_rotl16 (x, 8);
911 }
912
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
914 ecb_function_ uint32_t
915 ecb_bswap32 (uint32_t x)
916 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 }
919
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
921 ecb_function_ uint64_t
922 ecb_bswap64 (uint64_t x)
923 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 }
926#endif
927
928#if ECB_GCC_VERSION(4,5)
929 #define ecb_unreachable() __builtin_unreachable ()
930#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn;
933 ecb_inline void ecb_unreachable (void) { }
934#endif
935
936/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
938
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
940ecb_inline unsigned char
941ecb_byteorder_helper (void)
942{
943 const uint32_t u = 0x11223344;
944 return *(unsigned char *)&u;
945}
946
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
951
952#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif
957
958#if __cplusplus
959 template<typename T>
960 static inline T ecb_div_rd (T val, T div)
961 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 }
964 template<typename T>
965 static inline T ecb_div_ru (T val, T div)
966 {
967 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
968 }
969#else
970 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
971 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
972#endif
973
974#if ecb_cplusplus_does_not_suck
975 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
976 template<typename T, int N>
977 static inline int ecb_array_length (const T (&arr)[N])
978 {
979 return N;
980 }
981#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif
984
985#endif
986
987/* ECB.H END */
988
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
993 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences.
996 */
997# error "memory fences not defined for your architecture, please report"
998#endif
999
1000#ifndef ECB_MEMORY_FENCE
1001# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif
1005
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
488#define inline_size static inline 1010#define inline_size ecb_inline
489 1011
490#if EV_FEATURE_CODE 1012#if EV_FEATURE_CODE
491# define inline_speed static inline 1013# define inline_speed ecb_inline
492#else 1014#else
493# define inline_speed static noinline 1015# define inline_speed static noinline
494#endif 1016#endif
495 1017
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1057# include "ev_win32.c"
536#endif 1058#endif
537 1059
538/*****************************************************************************/ 1060/*****************************************************************************/
539 1061
1062/* define a suitable floor function (only used by periodics atm) */
1063
1064#if EV_USE_FLOOR
1065# include <math.h>
1066# define ev_floor(v) floor (v)
1067#else
1068
1069#include <float.h>
1070
1071/* a floor() replacement function, should be independent of ev_tstamp type */
1072static ev_tstamp noinline
1073ev_floor (ev_tstamp v)
1074{
1075 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif
1081
1082 /* argument too large for an unsigned long? */
1083 if (expect_false (v >= shift))
1084 {
1085 ev_tstamp f;
1086
1087 if (v == v - 1.)
1088 return v; /* very large number */
1089
1090 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f);
1092 }
1093
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */
1103 return (unsigned long)v;
1104}
1105
1106#endif
1107
1108/*****************************************************************************/
1109
1110#ifdef __linux
1111# include <sys/utsname.h>
1112#endif
1113
1114static unsigned int noinline ecb_cold
1115ev_linux_version (void)
1116{
1117#ifdef __linux
1118 unsigned int v = 0;
1119 struct utsname buf;
1120 int i;
1121 char *p = buf.release;
1122
1123 if (uname (&buf))
1124 return 0;
1125
1126 for (i = 3+1; --i; )
1127 {
1128 unsigned int c = 0;
1129
1130 for (;;)
1131 {
1132 if (*p >= '0' && *p <= '9')
1133 c = c * 10 + *p++ - '0';
1134 else
1135 {
1136 p += *p == '.';
1137 break;
1138 }
1139 }
1140
1141 v = (v << 8) | c;
1142 }
1143
1144 return v;
1145#else
1146 return 0;
1147#endif
1148}
1149
1150/*****************************************************************************/
1151
540#if EV_AVOID_STDIO 1152#if EV_AVOID_STDIO
541static void noinline 1153static void noinline ecb_cold
542ev_printerr (const char *msg) 1154ev_printerr (const char *msg)
543{ 1155{
544 write (STDERR_FILENO, msg, strlen (msg)); 1156 write (STDERR_FILENO, msg, strlen (msg));
545} 1157}
546#endif 1158#endif
547 1159
548static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
549 1161
550void 1162void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1164{
553 syserr_cb = cb; 1165 syserr_cb = cb;
554} 1166}
555 1167
556static void noinline 1168static void noinline ecb_cold
557ev_syserr (const char *msg) 1169ev_syserr (const char *msg)
558{ 1170{
559 if (!msg) 1171 if (!msg)
560 msg = "(libev) system error"; 1172 msg = "(libev) system error";
561 1173
562 if (syserr_cb) 1174 if (syserr_cb)
563 syserr_cb (msg); 1175 syserr_cb (msg);
564 else 1176 else
565 { 1177 {
566#if EV_AVOID_STDIO 1178#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1179 ev_printerr (msg);
570 ev_printerr (": "); 1180 ev_printerr (": ");
571 ev_printerr (err); 1181 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1182 ev_printerr ("\n");
573#else 1183#else
574 perror (msg); 1184 perror (msg);
575#endif 1185#endif
576 abort (); 1186 abort ();
577 } 1187 }
578} 1188}
579 1189
580static void * 1190static void *
581ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1192{
583#if __GLIBC__ 1193#if __GLIBC__
584 return realloc (ptr, size); 1194 return realloc (ptr, size);
585#else 1195#else
586 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
… …
594 free (ptr); 1204 free (ptr);
595 return 0; 1205 return 0;
596#endif 1206#endif
597} 1207}
598 1208
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1210
601void 1211void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1213{
604 alloc = cb; 1214 alloc = cb;
605} 1215}
606 1216
607inline_speed void * 1217inline_speed void *
… …
610 ptr = alloc (ptr, size); 1220 ptr = alloc (ptr, size);
611 1221
612 if (!ptr && size) 1222 if (!ptr && size)
613 { 1223 {
614#if EV_AVOID_STDIO 1224#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1225 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1226#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1227 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1228#endif
619 abort (); 1229 abort ();
620 } 1230 }
621 1231
622 return ptr; 1232 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1249 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1250 unsigned char unused;
641#if EV_USE_EPOLL 1251#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1252 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1253#endif
644#if EV_SELECT_IS_WINSOCKET 1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1255 SOCKET handle;
1256#endif
1257#if EV_USE_IOCP
1258 OVERLAPPED or, ow;
646#endif 1259#endif
647} ANFD; 1260} ANFD;
648 1261
649/* stores the pending event set for a given watcher */ 1262/* stores the pending event set for a given watcher */
650typedef struct 1263typedef struct
… …
692 #undef VAR 1305 #undef VAR
693 }; 1306 };
694 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
695 1308
696 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1311
699#else 1312#else
700 1313
701 ev_tstamp ev_rt_now; 1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1316 #include "ev_vars.h"
704 #undef VAR 1317 #undef VAR
705 1318
706 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1328# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1329# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1331#endif
719 1332
720#define EVUNLOOP_RECURSE 0x80 1333#define EVBREAK_RECURSE 0x80
721 1334
722/*****************************************************************************/ 1335/*****************************************************************************/
723 1336
724#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1338ev_tstamp
726ev_time (void) 1339ev_time (void) EV_THROW
727{ 1340{
728#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
730 { 1343 {
731 struct timespec ts; 1344 struct timespec ts;
… …
755 return ev_time (); 1368 return ev_time ();
756} 1369}
757 1370
758#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
759ev_tstamp 1372ev_tstamp
760ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
761{ 1374{
762 return ev_rt_now; 1375 return ev_rt_now;
763} 1376}
764#endif 1377#endif
765 1378
766void 1379void
767ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
768{ 1381{
769 if (delay > 0.) 1382 if (delay > 0.)
770 { 1383 {
771#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
772 struct timespec ts; 1385 struct timespec ts;
773 1386
774 ts.tv_sec = (time_t)delay; 1387 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1389#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
780#else 1391#else
781 struct timeval tv; 1392 struct timeval tv;
782 1393
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1395 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1396 /* by older ones */
1397 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1398 select (0, 0, 0, 0, &tv);
790#endif 1399#endif
791 } 1400 }
792} 1401}
793 1402
… …
804 1413
805 do 1414 do
806 ncur <<= 1; 1415 ncur <<= 1;
807 while (cnt > ncur); 1416 while (cnt > ncur);
808 1417
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1418 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1420 {
812 ncur *= elem; 1421 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1422 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1425 }
817 1426
818 return ncur; 1427 return ncur;
819} 1428}
820 1429
821static noinline void * 1430static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1432{
824 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
826} 1435}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1439
831#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
833 { \ 1442 { \
834 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1447 }
839 1448
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1467{
859} 1468}
860 1469
861void noinline 1470void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1472{
864 W w_ = (W)w; 1473 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
866 1475
867 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
875 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
876} 1487}
877 1488
878inline_speed void 1489inline_speed void
879feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
880{ 1491{
… …
926 if (expect_true (!anfd->reify)) 1537 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1538 fd_event_nocheck (EV_A_ fd, revents);
928} 1539}
929 1540
930void 1541void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1543{
933 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
935} 1546}
936 1547
… …
939inline_size void 1550inline_size void
940fd_reify (EV_P) 1551fd_reify (EV_P)
941{ 1552{
942 int i; 1553 int i;
943 1554
1555#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1556 for (i = 0; i < fdchangecnt; ++i)
1557 {
1558 int fd = fdchanges [i];
1559 ANFD *anfd = anfds + fd;
1560
1561 if (anfd->reify & EV__IOFDSET && anfd->head)
1562 {
1563 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1564
1565 if (handle != anfd->handle)
1566 {
1567 unsigned long arg;
1568
1569 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1570
1571 /* handle changed, but fd didn't - we need to do it in two steps */
1572 backend_modify (EV_A_ fd, anfd->events, 0);
1573 anfd->events = 0;
1574 anfd->handle = handle;
1575 }
1576 }
1577 }
1578#endif
1579
944 for (i = 0; i < fdchangecnt; ++i) 1580 for (i = 0; i < fdchangecnt; ++i)
945 { 1581 {
946 int fd = fdchanges [i]; 1582 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1583 ANFD *anfd = anfds + fd;
948 ev_io *w; 1584 ev_io *w;
949 1585
950 unsigned char events = 0; 1586 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify;
951 1588
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1589 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1590
955#if EV_SELECT_IS_WINSOCKET 1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1592 {
958 unsigned long arg; 1593 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1594
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events;
1597
1598 if (o_events != anfd->events)
1599 o_reify = EV__IOFDSET; /* actually |= */
961 } 1600 }
962#endif
963 1601
964 { 1602 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1603 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1604 }
975 1605
976 fdchangecnt = 0; 1606 fdchangecnt = 0;
977} 1607}
978 1608
… …
990 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
991 } 1621 }
992} 1622}
993 1623
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1625inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
997{ 1627{
998 ev_io *w; 1628 ev_io *w;
999 1629
1000 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1634 }
1005} 1635}
1006 1636
1007/* check whether the given fd is actually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1638inline_size int ecb_cold
1009fd_valid (int fd) 1639fd_valid (int fd)
1010{ 1640{
1011#ifdef _WIN32 1641#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1643#else
1014 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
1015#endif 1645#endif
1016} 1646}
1017 1647
1018/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
1019static void noinline 1649static void noinline ecb_cold
1020fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
1021{ 1651{
1022 int fd; 1652 int fd;
1023 1653
1024 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
1028} 1658}
1029 1659
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1660/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1661static void noinline ecb_cold
1032fd_enomem (EV_P) 1662fd_enomem (EV_P)
1033{ 1663{
1034 int fd; 1664 int fd;
1035 1665
1036 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
… …
1231 1861
1232/*****************************************************************************/ 1862/*****************************************************************************/
1233 1863
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1865
1236static void noinline 1866static void noinline ecb_cold
1237evpipe_init (EV_P) 1867evpipe_init (EV_P)
1238{ 1868{
1239 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1240 { 1870 {
1241# if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1895 }
1266} 1896}
1267 1897
1268inline_size void 1898inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1900{
1271 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902
1903 if (expect_true (*flag))
1904 return;
1905
1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908
1909 pipe_write_skipped = 1;
1910
1911 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1912
1913 if (pipe_write_wanted)
1272 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1273 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1921
1278#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1923 if (evfd >= 0)
1280 { 1924 {
1281 uint64_t counter = 1; 1925 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1283 } 1927 }
1284 else 1928 else
1285#endif 1929#endif
1286 /* win32 people keep sending patches that change this write() to send() */ 1930 {
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1931#ifdef _WIN32
1288 /* so when you think this write should be a send instead, please find out */ 1932 WSABUF buf;
1289 /* where your send() is from - it's definitely not the microsoft send, and */ 1933 DWORD sent;
1290 /* tell me. thank you. */ 1934 buf.buf = &buf;
1935 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else
1291 write (evpipe [1], &dummy, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1292 1941
1293 errno = old_errno; 1942 errno = old_errno;
1294 } 1943 }
1295} 1944}
1296 1945
… …
1299static void 1948static void
1300pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1301{ 1950{
1302 int i; 1951 int i;
1303 1952
1953 if (revents & EV_READ)
1954 {
1304#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1305 if (evfd >= 0) 1956 if (evfd >= 0)
1306 { 1957 {
1307 uint64_t counter; 1958 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1309 } 1960 }
1310 else 1961 else
1311#endif 1962#endif
1312 { 1963 {
1313 char dummy; 1964 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1965#ifdef _WIN32
1966 WSABUF buf;
1967 DWORD recvd;
1968 DWORD flags = 0;
1969 buf.buf = dummy;
1970 buf.len = sizeof (dummy);
1971 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1972#else
1315 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1975 }
1316 } 1976 }
1317 1977
1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1981
1982#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 1983 if (sig_pending)
1319 { 1984 {
1320 sig_pending = 0; 1985 sig_pending = 0;
1986
1987 ECB_MEMORY_FENCE;
1321 1988
1322 for (i = EV_NSIG - 1; i--; ) 1989 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 1990 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1325 } 1992 }
1993#endif
1326 1994
1327#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1328 if (async_pending) 1996 if (async_pending)
1329 { 1997 {
1330 async_pending = 0; 1998 async_pending = 0;
1999
2000 ECB_MEMORY_FENCE;
1331 2001
1332 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1334 { 2004 {
1335 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2008 }
1338 } 2009 }
1339#endif 2010#endif
1340} 2011}
1341 2012
1342/*****************************************************************************/ 2013/*****************************************************************************/
1343 2014
2015void
2016ev_feed_signal (int signum) EV_THROW
2017{
2018#if EV_MULTIPLICITY
2019 EV_P = signals [signum - 1].loop;
2020
2021 if (!EV_A)
2022 return;
2023#endif
2024
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending);
2030}
2031
1344static void 2032static void
1345ev_sighandler (int signum) 2033ev_sighandler (int signum)
1346{ 2034{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2035#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2036 signal (signum, ev_sighandler);
1353#endif 2037#endif
1354 2038
1355 signals [signum - 1].pending = 1; 2039 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2040}
1358 2041
1359void noinline 2042void noinline
1360ev_feed_signal_event (EV_P_ int signum) 2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 2044{
1362 WL w; 2045 WL w;
1363 2046
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
1365 return; 2048 return;
… …
1373 if (expect_false (signals [signum].loop != EV_A)) 2056 if (expect_false (signals [signum].loop != EV_A))
1374 return; 2057 return;
1375#endif 2058#endif
1376 2059
1377 signals [signum].pending = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1378 2062
1379 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2065}
1382 2066
… …
1461 2145
1462#endif 2146#endif
1463 2147
1464/*****************************************************************************/ 2148/*****************************************************************************/
1465 2149
2150#if EV_USE_IOCP
2151# include "ev_iocp.c"
2152#endif
1466#if EV_USE_PORT 2153#if EV_USE_PORT
1467# include "ev_port.c" 2154# include "ev_port.c"
1468#endif 2155#endif
1469#if EV_USE_KQUEUE 2156#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2157# include "ev_kqueue.c"
… …
1477#endif 2164#endif
1478#if EV_USE_SELECT 2165#if EV_USE_SELECT
1479# include "ev_select.c" 2166# include "ev_select.c"
1480#endif 2167#endif
1481 2168
1482int 2169int ecb_cold
1483ev_version_major (void) 2170ev_version_major (void) EV_THROW
1484{ 2171{
1485 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1486} 2173}
1487 2174
1488int 2175int ecb_cold
1489ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1490{ 2177{
1491 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1492} 2179}
1493 2180
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2181/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2182int inline_size ecb_cold
1496enable_secure (void) 2183enable_secure (void)
1497{ 2184{
1498#ifdef _WIN32 2185#ifdef _WIN32
1499 return 0; 2186 return 0;
1500#else 2187#else
1501 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2189 || getgid () != getegid ();
1503#endif 2190#endif
1504} 2191}
1505 2192
1506unsigned int 2193unsigned int ecb_cold
1507ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1508{ 2195{
1509 unsigned int flags = 0; 2196 unsigned int flags = 0;
1510 2197
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2203
1517 return flags; 2204 return flags;
1518} 2205}
1519 2206
1520unsigned int 2207unsigned int ecb_cold
1521ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1522{ 2209{
1523 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1524 2211
1525#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2224#endif
1538 2225
1539 return flags; 2226 return flags;
1540} 2227}
1541 2228
2229unsigned int ecb_cold
2230ev_embeddable_backends (void) EV_THROW
2231{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL;
2237
2238 return flags;
2239}
2240
1542unsigned int 2241unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2242ev_backend (EV_P) EV_THROW
1556{ 2243{
1557 return backend; 2244 return backend;
1558} 2245}
1559 2246
1560#if EV_FEATURE_API 2247#if EV_FEATURE_API
1561unsigned int 2248unsigned int
1562ev_iteration (EV_P) 2249ev_iteration (EV_P) EV_THROW
1563{ 2250{
1564 return loop_count; 2251 return loop_count;
1565} 2252}
1566 2253
1567unsigned int 2254unsigned int
1568ev_depth (EV_P) 2255ev_depth (EV_P) EV_THROW
1569{ 2256{
1570 return loop_depth; 2257 return loop_depth;
1571} 2258}
1572 2259
1573void 2260void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2262{
1576 io_blocktime = interval; 2263 io_blocktime = interval;
1577} 2264}
1578 2265
1579void 2266void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2268{
1582 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1583} 2270}
1584 2271
1585void 2272void
1586ev_set_userdata (EV_P_ void *data) 2273ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2274{
1588 userdata = data; 2275 userdata = data;
1589} 2276}
1590 2277
1591void * 2278void *
1592ev_userdata (EV_P) 2279ev_userdata (EV_P) EV_THROW
1593{ 2280{
1594 return userdata; 2281 return userdata;
1595} 2282}
1596 2283
2284void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1598{ 2286{
1599 invoke_cb = invoke_pending_cb; 2287 invoke_cb = invoke_pending_cb;
1600} 2288}
1601 2289
2290void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2292{
1604 release_cb = release; 2293 release_cb = release;
1605 acquire_cb = acquire; 2294 acquire_cb = acquire;
1606} 2295}
1607#endif 2296#endif
1608 2297
1609/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2299static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2301{
1613 if (!backend) 2302 if (!backend)
1614 { 2303 {
2304 origflags = flags;
2305
1615#if EV_USE_REALTIME 2306#if EV_USE_REALTIME
1616 if (!have_realtime) 2307 if (!have_realtime)
1617 { 2308 {
1618 struct timespec ts; 2309 struct timespec ts;
1619 2310
… …
1641 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2333 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2336
1646 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2338 mn_now = get_clock ();
1648 now_floor = mn_now; 2339 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2340 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2341#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2342 invoke_cb = ev_invoke_pending;
1652#endif 2343#endif
1653 2344
1654 io_blocktime = 0.; 2345 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2346 timeout_blocktime = 0.;
1656 backend = 0; 2347 backend = 0;
1657 backend_fd = -1; 2348 backend_fd = -1;
1658 sig_pending = 0; 2349 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2350#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2351 async_pending = 0;
1661#endif 2352#endif
2353 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0;
1662#if EV_USE_INOTIFY 2355#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2357#endif
1665#if EV_USE_SIGNALFD 2358#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2360#endif
1668 2361
1669 if (!(flags & 0x0000ffffU)) 2362 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1671 2364
2365#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif
1672#if EV_USE_PORT 2368#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2370#endif
1675#if EV_USE_KQUEUE 2371#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2389#endif
1694 } 2390 }
1695} 2391}
1696 2392
1697/* free up a loop structure */ 2393/* free up a loop structure */
1698static void noinline 2394void ecb_cold
1699loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1700{ 2396{
1701 int i; 2397 int i;
2398
2399#if EV_MULTIPLICITY
2400 /* mimic free (0) */
2401 if (!EV_A)
2402 return;
2403#endif
2404
2405#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt))
2408 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING;
2411 }
2412#endif
2413
2414#if EV_CHILD_ENABLE
2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2416 {
2417 ev_ref (EV_A); /* child watcher */
2418 ev_signal_stop (EV_A_ &childev);
2419 }
2420#endif
1702 2421
1703 if (ev_is_active (&pipe_w)) 2422 if (ev_is_active (&pipe_w))
1704 { 2423 {
1705 /*ev_ref (EV_A);*/ 2424 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2425 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1728#endif 2447#endif
1729 2448
1730 if (backend_fd >= 0) 2449 if (backend_fd >= 0)
1731 close (backend_fd); 2450 close (backend_fd);
1732 2451
2452#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif
1733#if EV_USE_PORT 2455#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2457#endif
1736#if EV_USE_KQUEUE 2458#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2486 array_free (periodic, EMPTY);
1765#endif 2487#endif
1766#if EV_FORK_ENABLE 2488#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2489 array_free (fork, EMPTY);
1768#endif 2490#endif
2491#if EV_CLEANUP_ENABLE
2492 array_free (cleanup, EMPTY);
2493#endif
1769 array_free (prepare, EMPTY); 2494 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2495 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2496#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2497 array_free (async, EMPTY);
1773#endif 2498#endif
1774 2499
1775 backend = 0; 2500 backend = 0;
2501
2502#if EV_MULTIPLICITY
2503 if (ev_is_default_loop (EV_A))
2504#endif
2505 ev_default_loop_ptr = 0;
2506#if EV_MULTIPLICITY
2507 else
2508 ev_free (EV_A);
2509#endif
1776} 2510}
1777 2511
1778#if EV_USE_INOTIFY 2512#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2513inline_size void infy_fork (EV_P);
1780#endif 2514#endif
… …
1795 infy_fork (EV_A); 2529 infy_fork (EV_A);
1796#endif 2530#endif
1797 2531
1798 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1799 { 2533 {
1800 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2535
1807 ev_ref (EV_A); 2536 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1809 2538
1810#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
… …
1828 postfork = 0; 2557 postfork = 0;
1829} 2558}
1830 2559
1831#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1832 2561
1833struct ev_loop * 2562struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1835{ 2564{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2566
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
1840 2569
1841 if (ev_backend (EV_A)) 2570 if (ev_backend (EV_A))
1842 return EV_A; 2571 return EV_A;
1843 2572
2573 ev_free (EV_A);
1844 return 0; 2574 return 0;
1845} 2575}
1846 2576
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2577#endif /* multiplicity */
1860 2578
1861#if EV_VERIFY 2579#if EV_VERIFY
1862static void noinline 2580static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
1864{ 2582{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2584
1867 if (w->pending) 2585 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2587}
1870 2588
1871static void noinline 2589static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2591{
1874 int i; 2592 int i;
1875 2593
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2599
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2601 }
1884} 2602}
1885 2603
1886static void noinline 2604static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
1888{ 2606{
1889 while (cnt--) 2607 while (cnt--)
1890 { 2608 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2611 }
1894} 2612}
1895#endif 2613#endif
1896 2614
1897#if EV_FEATURE_API 2615#if EV_FEATURE_API
1898void 2616void ecb_cold
1899ev_verify (EV_P) 2617ev_verify (EV_P) EV_THROW
1900{ 2618{
1901#if EV_VERIFY 2619#if EV_VERIFY
1902 int i; 2620 int i;
1903 WL w; 2621 WL w, w2;
1904 2622
1905 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
1906 2624
1907 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2628
1911 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
1913 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2635 {
1915 verify_watcher (EV_A_ (W)w); 2636 verify_watcher (EV_A_ (W)w);
2637
2638 if (j++ & 1)
2639 {
2640 assert (("libev: io watcher list contains a loop", w != w2));
2641 w2 = w2->next;
2642 }
2643
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2644 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2645 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2646 }
2647 }
1919 2648
1920 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
1922 2651
1923#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 2667#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2668 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2669 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2670#endif
1942 2671
2672#if EV_CLEANUP_ENABLE
2673 assert (cleanupmax >= cleanupcnt);
2674 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2675#endif
2676
1943#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2678 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2679 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2680#endif
1947 2681
… …
1964#endif 2698#endif
1965} 2699}
1966#endif 2700#endif
1967 2701
1968#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
1969struct ev_loop * 2703struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2704#else
1972int 2705int
2706#endif
1973ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2708{
1976 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
1977 { 2710 {
1978#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 2731
1999 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
2000} 2733}
2001 2734
2002void 2735void
2003ev_default_destroy (void) 2736ev_loop_fork (EV_P) EV_THROW
2004{ 2737{
2005#if EV_MULTIPLICITY 2738 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 2739}
2028 2740
2029/*****************************************************************************/ 2741/*****************************************************************************/
2030 2742
2031void 2743void
… …
2033{ 2745{
2034 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
2035} 2747}
2036 2748
2037unsigned int 2749unsigned int
2038ev_pending_count (EV_P) 2750ev_pending_count (EV_P) EV_THROW
2039{ 2751{
2040 int pri; 2752 int pri;
2041 unsigned int count = 0; 2753 unsigned int count = 0;
2042 2754
2043 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
… …
2047} 2759}
2048 2760
2049void noinline 2761void noinline
2050ev_invoke_pending (EV_P) 2762ev_invoke_pending (EV_P)
2051{ 2763{
2052 int pri; 2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2053
2054 for (pri = NUMPRI; pri--; )
2055 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
2056 { 2766 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061 2768
2062 p->w->pending = 0; 2769 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
2065 } 2772 }
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 2834 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 2835 }
2129} 2836}
2130 2837
2131#if EV_PERIODIC_ENABLE 2838#if EV_PERIODIC_ENABLE
2839
2840static void noinline
2841periodic_recalc (EV_P_ ev_periodic *w)
2842{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845
2846 /* the above almost always errs on the low side */
2847 while (at <= ev_rt_now)
2848 {
2849 ev_tstamp nat = at + w->interval;
2850
2851 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at))
2853 {
2854 at = ev_rt_now;
2855 break;
2856 }
2857
2858 at = nat;
2859 }
2860
2861 ev_at (w) = at;
2862}
2863
2132/* make periodics pending */ 2864/* make periodics pending */
2133inline_size void 2865inline_size void
2134periodics_reify (EV_P) 2866periodics_reify (EV_P)
2135{ 2867{
2136 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2137 2869
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 2871 {
2140 int feed_count = 0;
2141
2142 do 2872 do
2143 { 2873 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 2875
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 2885 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 2886 downheap (periodics, periodiccnt, HEAP0);
2157 } 2887 }
2158 else if (w->interval) 2888 else if (w->interval)
2159 { 2889 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2890 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 2891 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 2892 downheap (periodics, periodiccnt, HEAP0);
2176 } 2893 }
2177 else 2894 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2895 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 2903 }
2187} 2904}
2188 2905
2189/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2907/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 2908static void noinline ecb_cold
2192periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
2193{ 2910{
2194 int i; 2911 int i;
2195 2912
2196 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2916 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 2917
2201 if (w->reschedule_cb) 2918 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2919 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 2920 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2921 periodic_recalc (EV_A_ w);
2205 2922
2206 ANHE_at_cache (periodics [i]); 2923 ANHE_at_cache (periodics [i]);
2207 } 2924 }
2208 2925
2209 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
2210} 2927}
2211#endif 2928#endif
2212 2929
2213/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
2214static void noinline 2931static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 2933{
2217 int i; 2934 int i;
2218 2935
2219 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 2973 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 2974 * in the unlikely event of having been preempted here.
2258 */ 2975 */
2259 for (i = 4; --i; ) 2976 for (i = 4; --i; )
2260 { 2977 {
2978 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 2979 rtmn_diff = ev_rt_now - mn_now;
2262 2980
2981 diff = odiff - rtmn_diff;
2982
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 2984 return; /* all is well */
2265 2985
2266 ev_rt_now = ev_time (); 2986 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 2987 mn_now = get_clock ();
2268 now_floor = mn_now; 2988 now_floor = mn_now;
… …
2290 3010
2291 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2292 } 3012 }
2293} 3013}
2294 3014
2295void 3015int
2296ev_loop (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2297{ 3017{
2298#if EV_FEATURE_API 3018#if EV_FEATURE_API
2299 ++loop_depth; 3019 ++loop_depth;
2300#endif 3020#endif
2301 3021
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3022 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3023
2304 loop_done = EVUNLOOP_CANCEL; 3024 loop_done = EVBREAK_CANCEL;
2305 3025
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3026 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3027
2308 do 3028 do
2309 { 3029 {
… …
2352 /* calculate blocking time */ 3072 /* calculate blocking time */
2353 { 3073 {
2354 ev_tstamp waittime = 0.; 3074 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3075 ev_tstamp sleeptime = 0.;
2356 3076
3077 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now;
3079
3080 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100);
3082
3083 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1;
3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3089 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2366 3091
2367 if (timercnt) 3092 if (timercnt)
2368 { 3093 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3095 if (waittime > to) waittime = to;
2371 } 3096 }
2372 3097
2373#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3099 if (periodiccnt)
2375 { 3100 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2378 } 3103 }
2379#endif 3104#endif
2380 3105
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3106 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3107 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3108 waittime = timeout_blocktime;
3109
3110 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime;
2384 3114
2385 /* extra check because io_blocktime is commonly 0 */ 3115 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3116 if (expect_false (io_blocktime))
2387 { 3117 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3118 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3119
2390 if (sleeptime > waittime - backend_fudge) 3120 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3121 sleeptime = waittime - backend_mintime;
2392 3122
2393 if (expect_true (sleeptime > 0.)) 3123 if (expect_true (sleeptime > 0.))
2394 { 3124 {
2395 ev_sleep (sleeptime); 3125 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3126 waittime -= sleeptime;
… …
2399 } 3129 }
2400 3130
2401#if EV_FEATURE_API 3131#if EV_FEATURE_API
2402 ++loop_count; 3132 ++loop_count;
2403#endif 3133#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139
3140 if (pipe_write_skipped)
3141 {
3142 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3144 }
3145
2407 3146
2408 /* update ev_rt_now, do magic */ 3147 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3148 time_update (EV_A_ waittime + sleeptime);
2410 } 3149 }
2411 3150
… …
2429 EV_INVOKE_PENDING; 3168 EV_INVOKE_PENDING;
2430 } 3169 }
2431 while (expect_true ( 3170 while (expect_true (
2432 activecnt 3171 activecnt
2433 && !loop_done 3172 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3173 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3174 ));
2436 3175
2437 if (loop_done == EVUNLOOP_ONE) 3176 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3177 loop_done = EVBREAK_CANCEL;
2439 3178
2440#if EV_FEATURE_API 3179#if EV_FEATURE_API
2441 --loop_depth; 3180 --loop_depth;
2442#endif 3181#endif
3182
3183 return activecnt;
2443} 3184}
2444 3185
2445void 3186void
2446ev_unloop (EV_P_ int how) 3187ev_break (EV_P_ int how) EV_THROW
2447{ 3188{
2448 loop_done = how; 3189 loop_done = how;
2449} 3190}
2450 3191
2451void 3192void
2452ev_ref (EV_P) 3193ev_ref (EV_P) EV_THROW
2453{ 3194{
2454 ++activecnt; 3195 ++activecnt;
2455} 3196}
2456 3197
2457void 3198void
2458ev_unref (EV_P) 3199ev_unref (EV_P) EV_THROW
2459{ 3200{
2460 --activecnt; 3201 --activecnt;
2461} 3202}
2462 3203
2463void 3204void
2464ev_now_update (EV_P) 3205ev_now_update (EV_P) EV_THROW
2465{ 3206{
2466 time_update (EV_A_ 1e100); 3207 time_update (EV_A_ 1e100);
2467} 3208}
2468 3209
2469void 3210void
2470ev_suspend (EV_P) 3211ev_suspend (EV_P) EV_THROW
2471{ 3212{
2472 ev_now_update (EV_A); 3213 ev_now_update (EV_A);
2473} 3214}
2474 3215
2475void 3216void
2476ev_resume (EV_P) 3217ev_resume (EV_P) EV_THROW
2477{ 3218{
2478 ev_tstamp mn_prev = mn_now; 3219 ev_tstamp mn_prev = mn_now;
2479 3220
2480 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3222 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3261 w->pending = 0;
2521 } 3262 }
2522} 3263}
2523 3264
2524int 3265int
2525ev_clear_pending (EV_P_ void *w) 3266ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3267{
2527 W w_ = (W)w; 3268 W w_ = (W)w;
2528 int pending = w_->pending; 3269 int pending = w_->pending;
2529 3270
2530 if (expect_true (pending)) 3271 if (expect_true (pending))
… …
2563} 3304}
2564 3305
2565/*****************************************************************************/ 3306/*****************************************************************************/
2566 3307
2567void noinline 3308void noinline
2568ev_io_start (EV_P_ ev_io *w) 3309ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3310{
2570 int fd = w->fd; 3311 int fd = w->fd;
2571 3312
2572 if (expect_false (ev_is_active (w))) 3313 if (expect_false (ev_is_active (w)))
2573 return; 3314 return;
… …
2579 3320
2580 ev_start (EV_A_ (W)w, 1); 3321 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3322 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3323 wlist_add (&anfds[fd].head, (WL)w);
2583 3324
3325 /* common bug, apparently */
3326 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3327
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3328 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3329 w->events &= ~EV__IOFDSET;
2586 3330
2587 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2588} 3332}
2589 3333
2590void noinline 3334void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3335ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3336{
2593 clear_pending (EV_A_ (W)w); 3337 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3338 if (expect_false (!ev_is_active (w)))
2595 return; 3339 return;
2596 3340
… …
2599 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2600 3344
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3345 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3346 ev_stop (EV_A_ (W)w);
2603 3347
2604 fd_change (EV_A_ w->fd, 1); 3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3349
2606 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2607} 3351}
2608 3352
2609void noinline 3353void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3355{
2612 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2613 return; 3357 return;
2614 3358
2615 ev_at (w) += mn_now; 3359 ev_at (w) += mn_now;
… …
2629 3373
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3374 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3375}
2632 3376
2633void noinline 3377void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3379{
2636 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2638 return; 3382 return;
2639 3383
… …
2659 3403
2660 EV_FREQUENT_CHECK; 3404 EV_FREQUENT_CHECK;
2661} 3405}
2662 3406
2663void noinline 3407void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3409{
2666 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
3411
3412 clear_pending (EV_A_ (W)w);
2667 3413
2668 if (ev_is_active (w)) 3414 if (ev_is_active (w))
2669 { 3415 {
2670 if (w->repeat) 3416 if (w->repeat)
2671 { 3417 {
… …
2684 3430
2685 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2686} 3432}
2687 3433
2688ev_tstamp 3434ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3435ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3436{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3437 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3438}
2693 3439
2694#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2695void noinline 3441void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3443{
2698 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2699 return; 3445 return;
2700 3446
2701 if (w->reschedule_cb) 3447 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3448 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3449 else if (w->interval)
2704 { 3450 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3451 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3452 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3453 }
2709 else 3454 else
2710 ev_at (w) = w->offset; 3455 ev_at (w) = w->offset;
2711 3456
2712 EV_FREQUENT_CHECK; 3457 EV_FREQUENT_CHECK;
… …
2722 3467
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3468 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3469}
2725 3470
2726void noinline 3471void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3473{
2729 clear_pending (EV_A_ (W)w); 3474 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3475 if (expect_false (!ev_is_active (w)))
2731 return; 3476 return;
2732 3477
… …
2750 3495
2751 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2752} 3497}
2753 3498
2754void noinline 3499void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3501{
2757 /* TODO: use adjustheap and recalculation */ 3502 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3503 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3504 ev_periodic_start (EV_A_ w);
2760} 3505}
… …
2765#endif 3510#endif
2766 3511
2767#if EV_SIGNAL_ENABLE 3512#if EV_SIGNAL_ENABLE
2768 3513
2769void noinline 3514void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3516{
2772 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2773 return; 3518 return;
2774 3519
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3520 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2833 sa.sa_handler = ev_sighandler; 3578 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3579 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3580 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3581 sigaction (w->signum, &sa, 0);
2837 3582
3583 if (origflags & EVFLAG_NOSIGMASK)
3584 {
2838 sigemptyset (&sa.sa_mask); 3585 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3586 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3587 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3588 }
2841#endif 3589#endif
2842 } 3590 }
2843 3591
2844 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2845} 3593}
2846 3594
2847void noinline 3595void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3597{
2850 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2852 return; 3600 return;
2853 3601
… …
2884#endif 3632#endif
2885 3633
2886#if EV_CHILD_ENABLE 3634#if EV_CHILD_ENABLE
2887 3635
2888void 3636void
2889ev_child_start (EV_P_ ev_child *w) 3637ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3638{
2891#if EV_MULTIPLICITY 3639#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3640 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3641#endif
2894 if (expect_false (ev_is_active (w))) 3642 if (expect_false (ev_is_active (w)))
… …
2901 3649
2902 EV_FREQUENT_CHECK; 3650 EV_FREQUENT_CHECK;
2903} 3651}
2904 3652
2905void 3653void
2906ev_child_stop (EV_P_ ev_child *w) 3654ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3655{
2908 clear_pending (EV_A_ (W)w); 3656 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3657 if (expect_false (!ev_is_active (w)))
2910 return; 3658 return;
2911 3659
… …
2986 if (!pend || pend == path) 3734 if (!pend || pend == path)
2987 break; 3735 break;
2988 3736
2989 *pend = 0; 3737 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 3738 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 3739 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3740 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 3741 }
2994 } 3742 }
2995 3743
2996 if (w->wd >= 0) 3744 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3811 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 3812 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 3813 }
3066} 3814}
3067 3815
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 3816inline_size void ecb_cold
3101ev_check_2625 (EV_P) 3817ev_check_2625 (EV_P)
3102{ 3818{
3103 /* kernels < 2.6.25 are borked 3819 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3820 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 3821 */
… …
3110} 3826}
3111 3827
3112inline_size int 3828inline_size int
3113infy_newfd (void) 3829infy_newfd (void)
3114{ 3830{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3831#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3832 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 3833 if (fd >= 0)
3118 return fd; 3834 return fd;
3119#endif 3835#endif
3120 return inotify_init (); 3836 return inotify_init ();
… …
3195#else 3911#else
3196# define EV_LSTAT(p,b) lstat (p, b) 3912# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 3913#endif
3198 3914
3199void 3915void
3200ev_stat_stat (EV_P_ ev_stat *w) 3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 3917{
3202 if (lstat (w->path, &w->attr) < 0) 3918 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 3919 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 3920 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 3921 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 3960 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 3961 }
3246} 3962}
3247 3963
3248void 3964void
3249ev_stat_start (EV_P_ ev_stat *w) 3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 3966{
3251 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
3252 return; 3968 return;
3253 3969
3254 ev_stat_stat (EV_A_ w); 3970 ev_stat_stat (EV_A_ w);
… …
3275 3991
3276 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
3277} 3993}
3278 3994
3279void 3995void
3280ev_stat_stop (EV_P_ ev_stat *w) 3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 3997{
3282 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
3284 return; 4000 return;
3285 4001
… …
3301} 4017}
3302#endif 4018#endif
3303 4019
3304#if EV_IDLE_ENABLE 4020#if EV_IDLE_ENABLE
3305void 4021void
3306ev_idle_start (EV_P_ ev_idle *w) 4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 4023{
3308 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
3309 return; 4025 return;
3310 4026
3311 pri_adjust (EV_A_ (W)w); 4027 pri_adjust (EV_A_ (W)w);
… …
3324 4040
3325 EV_FREQUENT_CHECK; 4041 EV_FREQUENT_CHECK;
3326} 4042}
3327 4043
3328void 4044void
3329ev_idle_stop (EV_P_ ev_idle *w) 4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 4046{
3331 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4048 if (expect_false (!ev_is_active (w)))
3333 return; 4049 return;
3334 4050
… …
3348} 4064}
3349#endif 4065#endif
3350 4066
3351#if EV_PREPARE_ENABLE 4067#if EV_PREPARE_ENABLE
3352void 4068void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4070{
3355 if (expect_false (ev_is_active (w))) 4071 if (expect_false (ev_is_active (w)))
3356 return; 4072 return;
3357 4073
3358 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
… …
3363 4079
3364 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
3365} 4081}
3366 4082
3367void 4083void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4085{
3370 clear_pending (EV_A_ (W)w); 4086 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4087 if (expect_false (!ev_is_active (w)))
3372 return; 4088 return;
3373 4089
… …
3386} 4102}
3387#endif 4103#endif
3388 4104
3389#if EV_CHECK_ENABLE 4105#if EV_CHECK_ENABLE
3390void 4106void
3391ev_check_start (EV_P_ ev_check *w) 4107ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4108{
3393 if (expect_false (ev_is_active (w))) 4109 if (expect_false (ev_is_active (w)))
3394 return; 4110 return;
3395 4111
3396 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
… …
3401 4117
3402 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
3403} 4119}
3404 4120
3405void 4121void
3406ev_check_stop (EV_P_ ev_check *w) 4122ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4123{
3408 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4125 if (expect_false (!ev_is_active (w)))
3410 return; 4126 return;
3411 4127
… …
3424} 4140}
3425#endif 4141#endif
3426 4142
3427#if EV_EMBED_ENABLE 4143#if EV_EMBED_ENABLE
3428void noinline 4144void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4146{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4147 ev_run (w->other, EVRUN_NOWAIT);
3432} 4148}
3433 4149
3434static void 4150static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4151embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4152{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4153 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4154
3439 if (ev_cb (w)) 4155 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4156 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4157 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4158 ev_run (w->other, EVRUN_NOWAIT);
3443} 4159}
3444 4160
3445static void 4161static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4162embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4163{
… …
3451 EV_P = w->other; 4167 EV_P = w->other;
3452 4168
3453 while (fdchangecnt) 4169 while (fdchangecnt)
3454 { 4170 {
3455 fd_reify (EV_A); 4171 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4172 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4173 }
3458 } 4174 }
3459} 4175}
3460 4176
3461static void 4177static void
… …
3467 4183
3468 { 4184 {
3469 EV_P = w->other; 4185 EV_P = w->other;
3470 4186
3471 ev_loop_fork (EV_A); 4187 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4188 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4189 }
3474 4190
3475 ev_embed_start (EV_A_ w); 4191 ev_embed_start (EV_A_ w);
3476} 4192}
3477 4193
… …
3482 ev_idle_stop (EV_A_ idle); 4198 ev_idle_stop (EV_A_ idle);
3483} 4199}
3484#endif 4200#endif
3485 4201
3486void 4202void
3487ev_embed_start (EV_P_ ev_embed *w) 4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4204{
3489 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
3490 return; 4206 return;
3491 4207
3492 { 4208 {
… …
3513 4229
3514 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
3515} 4231}
3516 4232
3517void 4233void
3518ev_embed_stop (EV_P_ ev_embed *w) 4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4235{
3520 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
3522 return; 4238 return;
3523 4239
… …
3533} 4249}
3534#endif 4250#endif
3535 4251
3536#if EV_FORK_ENABLE 4252#if EV_FORK_ENABLE
3537void 4253void
3538ev_fork_start (EV_P_ ev_fork *w) 4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4255{
3540 if (expect_false (ev_is_active (w))) 4256 if (expect_false (ev_is_active (w)))
3541 return; 4257 return;
3542 4258
3543 EV_FREQUENT_CHECK; 4259 EV_FREQUENT_CHECK;
… …
3548 4264
3549 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3550} 4266}
3551 4267
3552void 4268void
3553ev_fork_stop (EV_P_ ev_fork *w) 4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4270{
3555 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3557 return; 4273 return;
3558 4274
… …
3569 4285
3570 EV_FREQUENT_CHECK; 4286 EV_FREQUENT_CHECK;
3571} 4287}
3572#endif 4288#endif
3573 4289
4290#if EV_CLEANUP_ENABLE
4291void
4292ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4293{
4294 if (expect_false (ev_is_active (w)))
4295 return;
4296
4297 EV_FREQUENT_CHECK;
4298
4299 ev_start (EV_A_ (W)w, ++cleanupcnt);
4300 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4301 cleanups [cleanupcnt - 1] = w;
4302
4303 /* cleanup watchers should never keep a refcount on the loop */
4304 ev_unref (EV_A);
4305 EV_FREQUENT_CHECK;
4306}
4307
4308void
4309ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4310{
4311 clear_pending (EV_A_ (W)w);
4312 if (expect_false (!ev_is_active (w)))
4313 return;
4314
4315 EV_FREQUENT_CHECK;
4316 ev_ref (EV_A);
4317
4318 {
4319 int active = ev_active (w);
4320
4321 cleanups [active - 1] = cleanups [--cleanupcnt];
4322 ev_active (cleanups [active - 1]) = active;
4323 }
4324
4325 ev_stop (EV_A_ (W)w);
4326
4327 EV_FREQUENT_CHECK;
4328}
4329#endif
4330
3574#if EV_ASYNC_ENABLE 4331#if EV_ASYNC_ENABLE
3575void 4332void
3576ev_async_start (EV_P_ ev_async *w) 4333ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4334{
3578 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3579 return; 4336 return;
4337
4338 w->sent = 0;
3580 4339
3581 evpipe_init (EV_A); 4340 evpipe_init (EV_A);
3582 4341
3583 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3584 4343
… …
3588 4347
3589 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3590} 4349}
3591 4350
3592void 4351void
3593ev_async_stop (EV_P_ ev_async *w) 4352ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4353{
3595 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3597 return; 4356 return;
3598 4357
… …
3609 4368
3610 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3611} 4370}
3612 4371
3613void 4372void
3614ev_async_send (EV_P_ ev_async *w) 4373ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4374{
3616 w->sent = 1; 4375 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4376 evpipe_write (EV_A_ &async_pending);
3618} 4377}
3619#endif 4378#endif
… …
3656 4415
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4416 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4417}
3659 4418
3660void 4419void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4421{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4423
3665 if (expect_false (!once)) 4424 if (expect_false (!once))
3666 { 4425 {
… …
3687} 4446}
3688 4447
3689/*****************************************************************************/ 4448/*****************************************************************************/
3690 4449
3691#if EV_WALK_ENABLE 4450#if EV_WALK_ENABLE
3692void 4451void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4452ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4453{
3695 int i, j; 4454 int i, j;
3696 ev_watcher_list *wl, *wn; 4455 ev_watcher_list *wl, *wn;
3697 4456
3698 if (types & (EV_IO | EV_EMBED)) 4457 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4500 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4501#endif
3743 4502
3744#if EV_IDLE_ENABLE 4503#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4504 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4505 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4506 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4507 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4508#endif
3750 4509
3751#if EV_FORK_ENABLE 4510#if EV_FORK_ENABLE
… …
3804 4563
3805#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4565 #include "ev_wrap.h"
3807#endif 4566#endif
3808 4567
3809#ifdef __cplusplus
3810}
3811#endif
3812

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