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Comparing libev/ev.c (file contents):
Revision 1.353 by root, Thu Oct 21 12:32:47 2010 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 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
… …
340 357
341#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 360#endif
344 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* 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. */ 379/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 381# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
353# else 386# else
… …
356# endif 389# endif
357#endif 390#endif
358 391
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 393
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
370#endif 397#endif
371 398
… …
378# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
380#endif 407#endif
381 408
382#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 412# include <sys/select.h>
385# endif 413# endif
386#endif 414#endif
387 415
388#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 417# include <sys/statfs.h>
391# include <sys/inotify.h> 418# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
396# endif 423# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 424#endif
402 425
403#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 428# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
412# else 435# else
413# define EFD_CLOEXEC 02000000 436# define EFD_CLOEXEC 02000000
414# endif 437# endif
415# endif 438# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 440#endif
424 441
425#if EV_USE_SIGNALFD 442#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 444# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 450# define SFD_CLOEXEC O_CLOEXEC
434# else 451# else
435# define SFD_CLOEXEC 02000000 452# define SFD_CLOEXEC 02000000
436# endif 453# endif
437# endif 454# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 456
443struct signalfd_siginfo 457struct signalfd_siginfo
444{ 458{
445 uint32_t ssi_signo; 459 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 460 char pad[128 - sizeof (uint32_t)];
447}; 461};
448# ifdef __cplusplus
449}
450# endif
451#endif 462#endif
452 463
453/**/ 464/**/
454 465
455#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
… …
457#else 468#else
458# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
459#endif 470#endif
460 471
461/* 472/*
462 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 475 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 478
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 481
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 529 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
480#else 545#else
481# define expect(expr,value) (expr) 546 #include <inttypes.h>
482# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
484# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
485# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if _ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
486#endif 560 #endif
561#endif
487 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
648 #endif
649 #endif
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize ()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32
674 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
680 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
681 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync ()
683 #endif
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS
703 /*
704 * if you get undefined symbol references to pthread_mutex_lock,
705 * or failure to find pthread.h, then you should implement
706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
707 * OR provide pthread.h and link against the posix thread library
708 * of your system.
709 */
710 #include <pthread.h>
711 #define ECB_NEEDS_PTHREADS 1
712 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
713
714 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
715 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
716 #endif
717#endif
718
719#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
720 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
721#endif
722
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif
726
727/*****************************************************************************/
728
729#if __cplusplus
730 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__
733#elif ECB_C99
734 #define ecb_inline static inline
735#else
736 #define ecb_inline static
737#endif
738
739#if ECB_GCC_VERSION(3,3)
740 #define ecb_restrict __restrict__
741#elif ECB_C99
742 #define ecb_restrict restrict
743#else
744 #define ecb_restrict
745#endif
746
747typedef int ecb_bool;
748
749#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
753
754#define ecb_function_ ecb_inline
755
756#if ECB_GCC_VERSION(3,1)
757 #define ecb_attribute(attrlist) __attribute__(attrlist)
758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality)
766#endif
767
768/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5)
770 #define ecb_decltype(x) __decltype(x)
771#elif ECB_GCC_VERSION(3,0)
772 #define ecb_decltype(x) __typeof(x)
773#endif
774
775#define ecb_noinline ecb_attribute ((__noinline__))
776#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
785
786#if ECB_GCC_VERSION(4,3)
787 #define ecb_artificial ecb_attribute ((__artificial__))
788 #define ecb_hot ecb_attribute ((__hot__))
789 #define ecb_cold ecb_attribute ((__cold__))
790#else
791 #define ecb_artificial
792 #define ecb_hot
793 #define ecb_cold
794#endif
795
796/* put around conditional expressions if you are very sure that the */
797/* expression is mostly true or mostly false. note that these return */
798/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
801/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr)
804
805/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4)
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */
814#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
816 ecb_function_ int
817 ecb_ctz32 (uint32_t x)
818 {
819 int r = 0;
820
821 x &= ~x + 1; /* this isolates the lowest bit */
822
823#if ECB_branchless_on_i386
824 r += !!(x & 0xaaaaaaaa) << 0;
825 r += !!(x & 0xcccccccc) << 1;
826 r += !!(x & 0xf0f0f0f0) << 2;
827 r += !!(x & 0xff00ff00) << 3;
828 r += !!(x & 0xffff0000) << 4;
829#else
830 if (x & 0xaaaaaaaa) r += 1;
831 if (x & 0xcccccccc) r += 2;
832 if (x & 0xf0f0f0f0) r += 4;
833 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16;
835#endif
836
837 return r;
838 }
839
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
841 ecb_function_ int
842 ecb_ctz64 (uint64_t x)
843 {
844 int shift = x & 0xffffffffU ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift;
846 }
847
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
849 ecb_function_ int
850 ecb_popcount32 (uint32_t x)
851 {
852 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101;
856
857 return x >> 24;
858 }
859
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
861 ecb_function_ int ecb_ld32 (uint32_t x)
862 {
863 int r = 0;
864
865 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; }
870
871 return r;
872 }
873
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
875 ecb_function_ int ecb_ld64 (uint64_t x)
876 {
877 int r = 0;
878
879 if (x >> 32) { x >>= 32; r += 32; }
880
881 return r + ecb_ld32 (x);
882 }
883#endif
884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
892{
893 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895}
896
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
899{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8);
904
905 return x;
906}
907
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
910{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
915 x = ( x >> 16 ) | ( x << 16);
916
917 return x;
918}
919
920/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
923ecb_function_ int
924ecb_popcount64 (uint64_t x)
925{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927}
928
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
937
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946
947#if ECB_GCC_VERSION(4,3)
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
949 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x)
951#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
953 ecb_function_ uint16_t
954 ecb_bswap16 (uint16_t x)
955 {
956 return ecb_rotl16 (x, 8);
957 }
958
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
960 ecb_function_ uint32_t
961 ecb_bswap32 (uint32_t x)
962 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 }
965
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
967 ecb_function_ uint64_t
968 ecb_bswap64 (uint64_t x)
969 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 }
972#endif
973
974#if ECB_GCC_VERSION(4,5)
975 #define ecb_unreachable() __builtin_unreachable ()
976#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
979 ecb_inline void ecb_unreachable (void) { }
980#endif
981
982/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
986ecb_inline unsigned char
987ecb_byteorder_helper (void)
988{
989 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
1009}
1010
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1015
1016#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif
1021
1022#if __cplusplus
1023 template<typename T>
1024 static inline T ecb_div_rd (T val, T div)
1025 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 }
1028 template<typename T>
1029 static inline T ecb_div_ru (T val, T div)
1030 {
1031 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1032 }
1033#else
1034 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1035 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1036#endif
1037
1038#if ecb_cplusplus_does_not_suck
1039 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1040 template<typename T, int N>
1041 static inline int ecb_array_length (const T (&arr)[N])
1042 {
1043 return N;
1044 }
1045#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif
1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072#endif
1073
1074#ifndef ECB_NO_LIBM
1075
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077
1078 #ifdef NEN
1079 #define ECB_NAN NAN
1080 #else
1081 #define ECB_NAN INFINITY
1082 #endif
1083
1084 /* converts an ieee half/binary16 to a float */
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1086 ecb_function_ float
1087 ecb_binary16_to_float (uint16_t x)
1088 {
1089 int e = (x >> 10) & 0x1f;
1090 int m = x & 0x3ff;
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100
1101 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1103 ecb_function_ uint32_t
1104 ecb_float_to_binary32 (float x)
1105 {
1106 uint32_t r;
1107
1108 #if ECB_STDFP
1109 memcpy (&r, &x, 4);
1110 #else
1111 /* slow emulation, works for anything but -0 */
1112 uint32_t m;
1113 int e;
1114
1115 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU;
1119
1120 m = frexpf (x, &e) * 0x1000000U;
1121
1122 r = m & 0x80000000U;
1123
1124 if (r)
1125 m = -m;
1126
1127 if (e <= -126)
1128 {
1129 m &= 0xffffffU;
1130 m >>= (-125 - e);
1131 e = -126;
1132 }
1133
1134 r |= (e + 126) << 23;
1135 r |= m & 0x7fffffU;
1136 #endif
1137
1138 return r;
1139 }
1140
1141 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1143 ecb_function_ float
1144 ecb_binary32_to_float (uint32_t x)
1145 {
1146 float r;
1147
1148 #if ECB_STDFP
1149 memcpy (&r, &x, 4);
1150 #else
1151 /* emulation, only works for normals and subnormals and +0 */
1152 int neg = x >> 31;
1153 int e = (x >> 23) & 0xffU;
1154
1155 x &= 0x7fffffU;
1156
1157 if (e)
1158 x |= 0x800000U;
1159 else
1160 e = 1;
1161
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1164
1165 r = neg ? -r : r;
1166 #endif
1167
1168 return r;
1169 }
1170
1171 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1173 ecb_function_ uint64_t
1174 ecb_double_to_binary64 (double x)
1175 {
1176 uint64_t r;
1177
1178 #if ECB_STDFP
1179 memcpy (&r, &x, 8);
1180 #else
1181 /* slow emulation, works for anything but -0 */
1182 uint64_t m;
1183 int e;
1184
1185 if (x == 0e0 ) return 0x0000000000000000U;
1186 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1187 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1188 if (x != x ) return 0X7ff7ffffffffffffU;
1189
1190 m = frexp (x, &e) * 0x20000000000000U;
1191
1192 r = m & 0x8000000000000000;;
1193
1194 if (r)
1195 m = -m;
1196
1197 if (e <= -1022)
1198 {
1199 m &= 0x1fffffffffffffU;
1200 m >>= (-1021 - e);
1201 e = -1022;
1202 }
1203
1204 r |= ((uint64_t)(e + 1022)) << 52;
1205 r |= m & 0xfffffffffffffU;
1206 #endif
1207
1208 return r;
1209 }
1210
1211 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1213 ecb_function_ double
1214 ecb_binary64_to_double (uint64_t x)
1215 {
1216 double r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 8);
1220 #else
1221 /* emulation, only works for normals and subnormals and +0 */
1222 int neg = x >> 63;
1223 int e = (x >> 52) & 0x7ffU;
1224
1225 x &= 0xfffffffffffffU;
1226
1227 if (e)
1228 x |= 0x10000000000000U;
1229 else
1230 e = 1;
1231
1232 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1233 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1234
1235 r = neg ? -r : r;
1236 #endif
1237
1238 return r;
1239 }
1240
1241#endif
1242
1243#endif
1244
1245/* ECB.H END */
1246
1247#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1248/* if your architecture doesn't need memory fences, e.g. because it is
1249 * single-cpu/core, or if you use libev in a project that doesn't use libev
1250 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1251 * libev, in which cases the memory fences become nops.
1252 * alternatively, you can remove this #error and link against libpthread,
1253 * which will then provide the memory fences.
1254 */
1255# error "memory fences not defined for your architecture, please report"
1256#endif
1257
1258#ifndef ECB_MEMORY_FENCE
1259# define ECB_MEMORY_FENCE do { } while (0)
1260# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1261# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1262#endif
1263
1264#define expect_false(cond) ecb_expect_false (cond)
1265#define expect_true(cond) ecb_expect_true (cond)
1266#define noinline ecb_noinline
1267
490#define inline_size static inline 1268#define inline_size ecb_inline
491 1269
492#if EV_FEATURE_CODE 1270#if EV_FEATURE_CODE
493# define inline_speed static inline 1271# define inline_speed ecb_inline
494#else 1272#else
495# define inline_speed static noinline 1273# define inline_speed static noinline
496#endif 1274#endif
497 1275
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1276#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1315# include "ev_win32.c"
538#endif 1316#endif
539 1317
540/*****************************************************************************/ 1318/*****************************************************************************/
541 1319
1320/* define a suitable floor function (only used by periodics atm) */
1321
1322#if EV_USE_FLOOR
1323# include <math.h>
1324# define ev_floor(v) floor (v)
1325#else
1326
1327#include <float.h>
1328
1329/* a floor() replacement function, should be independent of ev_tstamp type */
1330static ev_tstamp noinline
1331ev_floor (ev_tstamp v)
1332{
1333 /* the choice of shift factor is not terribly important */
1334#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1335 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1336#else
1337 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1338#endif
1339
1340 /* argument too large for an unsigned long? */
1341 if (expect_false (v >= shift))
1342 {
1343 ev_tstamp f;
1344
1345 if (v == v - 1.)
1346 return v; /* very large number */
1347
1348 f = shift * ev_floor (v * (1. / shift));
1349 return f + ev_floor (v - f);
1350 }
1351
1352 /* special treatment for negative args? */
1353 if (expect_false (v < 0.))
1354 {
1355 ev_tstamp f = -ev_floor (-v);
1356
1357 return f - (f == v ? 0 : 1);
1358 }
1359
1360 /* fits into an unsigned long */
1361 return (unsigned long)v;
1362}
1363
1364#endif
1365
1366/*****************************************************************************/
1367
1368#ifdef __linux
1369# include <sys/utsname.h>
1370#endif
1371
1372static unsigned int noinline ecb_cold
1373ev_linux_version (void)
1374{
1375#ifdef __linux
1376 unsigned int v = 0;
1377 struct utsname buf;
1378 int i;
1379 char *p = buf.release;
1380
1381 if (uname (&buf))
1382 return 0;
1383
1384 for (i = 3+1; --i; )
1385 {
1386 unsigned int c = 0;
1387
1388 for (;;)
1389 {
1390 if (*p >= '0' && *p <= '9')
1391 c = c * 10 + *p++ - '0';
1392 else
1393 {
1394 p += *p == '.';
1395 break;
1396 }
1397 }
1398
1399 v = (v << 8) | c;
1400 }
1401
1402 return v;
1403#else
1404 return 0;
1405#endif
1406}
1407
1408/*****************************************************************************/
1409
542#if EV_AVOID_STDIO 1410#if EV_AVOID_STDIO
543static void noinline 1411static void noinline ecb_cold
544ev_printerr (const char *msg) 1412ev_printerr (const char *msg)
545{ 1413{
546 write (STDERR_FILENO, msg, strlen (msg)); 1414 write (STDERR_FILENO, msg, strlen (msg));
547} 1415}
548#endif 1416#endif
549 1417
550static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
551 1419
552void 1420void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1422{
555 syserr_cb = cb; 1423 syserr_cb = cb;
556} 1424}
557 1425
558static void noinline 1426static void noinline ecb_cold
559ev_syserr (const char *msg) 1427ev_syserr (const char *msg)
560{ 1428{
561 if (!msg) 1429 if (!msg)
562 msg = "(libev) system error"; 1430 msg = "(libev) system error";
563 1431
564 if (syserr_cb) 1432 if (syserr_cb)
565 syserr_cb (msg); 1433 syserr_cb (msg);
566 else 1434 else
567 { 1435 {
568#if EV_AVOID_STDIO 1436#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1437 ev_printerr (msg);
572 ev_printerr (": "); 1438 ev_printerr (": ");
573 ev_printerr (err); 1439 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1440 ev_printerr ("\n");
575#else 1441#else
576 perror (msg); 1442 perror (msg);
577#endif 1443#endif
578 abort (); 1444 abort ();
579 } 1445 }
580} 1446}
581 1447
582static void * 1448static void *
583ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1450{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1452 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1453 * the single unix specification, so work around them here.
1454 * recently, also (at least) fedora and debian started breaking it,
1455 * despite documenting it otherwise.
591 */ 1456 */
592 1457
593 if (size) 1458 if (size)
594 return realloc (ptr, size); 1459 return realloc (ptr, size);
595 1460
596 free (ptr); 1461 free (ptr);
597 return 0; 1462 return 0;
598#endif
599} 1463}
600 1464
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1466
603void 1467void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1469{
606 alloc = cb; 1470 alloc = cb;
607} 1471}
608 1472
609inline_speed void * 1473inline_speed void *
… …
612 ptr = alloc (ptr, size); 1476 ptr = alloc (ptr, size);
613 1477
614 if (!ptr && size) 1478 if (!ptr && size)
615 { 1479 {
616#if EV_AVOID_STDIO 1480#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1481 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1482#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1483 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1484#endif
621 abort (); 1485 abort ();
622 } 1486 }
623 1487
624 return ptr; 1488 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1505 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1506 unsigned char unused;
643#if EV_USE_EPOLL 1507#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1508 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1509#endif
646#if EV_SELECT_IS_WINSOCKET 1510#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1511 SOCKET handle;
1512#endif
1513#if EV_USE_IOCP
1514 OVERLAPPED or, ow;
648#endif 1515#endif
649} ANFD; 1516} ANFD;
650 1517
651/* stores the pending event set for a given watcher */ 1518/* stores the pending event set for a given watcher */
652typedef struct 1519typedef struct
… …
694 #undef VAR 1561 #undef VAR
695 }; 1562 };
696 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
697 1564
698 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1566 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1567
701#else 1568#else
702 1569
703 ev_tstamp ev_rt_now; 1570 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1572 #include "ev_vars.h"
706 #undef VAR 1573 #undef VAR
707 1574
708 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
… …
723 1590
724/*****************************************************************************/ 1591/*****************************************************************************/
725 1592
726#ifndef EV_HAVE_EV_TIME 1593#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1594ev_tstamp
728ev_time (void) 1595ev_time (void) EV_THROW
729{ 1596{
730#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
732 { 1599 {
733 struct timespec ts; 1600 struct timespec ts;
… …
757 return ev_time (); 1624 return ev_time ();
758} 1625}
759 1626
760#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
761ev_tstamp 1628ev_tstamp
762ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
763{ 1630{
764 return ev_rt_now; 1631 return ev_rt_now;
765} 1632}
766#endif 1633#endif
767 1634
768void 1635void
769ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
770{ 1637{
771 if (delay > 0.) 1638 if (delay > 0.)
772 { 1639 {
773#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
774 struct timespec ts; 1641 struct timespec ts;
775 1642
776 EV_TS_SET (ts, delay); 1643 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1645#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
780#else 1647#else
781 struct timeval tv; 1648 struct timeval tv;
782 1649
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1669
803 do 1670 do
804 ncur <<= 1; 1671 ncur <<= 1;
805 while (cnt > ncur); 1672 while (cnt > ncur);
806 1673
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1676 {
810 ncur *= elem; 1677 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1681 }
815 1682
816 return ncur; 1683 return ncur;
817} 1684}
818 1685
819static noinline void * 1686static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1687array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1688{
822 *cur = array_nextsize (elem, *cur, cnt); 1689 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1690 return ev_realloc (base, elem * *cur);
824} 1691}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1695
829#define array_needsize(type,base,cur,cnt,init) \ 1696#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1697 if (expect_false ((cnt) > (cur))) \
831 { \ 1698 { \
832 int ocur_ = (cur); \ 1699 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1700 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1701 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1702 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1703 }
837 1704
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1723{
857} 1724}
858 1725
859void noinline 1726void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1728{
862 W w_ = (W)w; 1729 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
864 1731
865 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
873 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
874} 1743}
875 1744
876inline_speed void 1745inline_speed void
877feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
878{ 1747{
… …
924 if (expect_true (!anfd->reify)) 1793 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1794 fd_event_nocheck (EV_A_ fd, revents);
926} 1795}
927 1796
928void 1797void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1799{
931 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
933} 1802}
934 1803
… …
937inline_size void 1806inline_size void
938fd_reify (EV_P) 1807fd_reify (EV_P)
939{ 1808{
940 int i; 1809 int i;
941 1810
1811#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1812 for (i = 0; i < fdchangecnt; ++i)
1813 {
1814 int fd = fdchanges [i];
1815 ANFD *anfd = anfds + fd;
1816
1817 if (anfd->reify & EV__IOFDSET && anfd->head)
1818 {
1819 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1820
1821 if (handle != anfd->handle)
1822 {
1823 unsigned long arg;
1824
1825 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1826
1827 /* handle changed, but fd didn't - we need to do it in two steps */
1828 backend_modify (EV_A_ fd, anfd->events, 0);
1829 anfd->events = 0;
1830 anfd->handle = handle;
1831 }
1832 }
1833 }
1834#endif
1835
942 for (i = 0; i < fdchangecnt; ++i) 1836 for (i = 0; i < fdchangecnt; ++i)
943 { 1837 {
944 int fd = fdchanges [i]; 1838 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1839 ANFD *anfd = anfds + fd;
946 ev_io *w; 1840 ev_io *w;
… …
948 unsigned char o_events = anfd->events; 1842 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 1843 unsigned char o_reify = anfd->reify;
950 1844
951 anfd->reify = 0; 1845 anfd->reify = 0;
952 1846
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1847 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 1848 {
964 anfd->events = 0; 1849 anfd->events = 0;
965 1850
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1851 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
991 fdchanges [fdchangecnt - 1] = fd; 1876 fdchanges [fdchangecnt - 1] = fd;
992 } 1877 }
993} 1878}
994 1879
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1880/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 1881inline_speed void ecb_cold
997fd_kill (EV_P_ int fd) 1882fd_kill (EV_P_ int fd)
998{ 1883{
999 ev_io *w; 1884 ev_io *w;
1000 1885
1001 while ((w = (ev_io *)anfds [fd].head)) 1886 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1889 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 1890 }
1006} 1891}
1007 1892
1008/* check whether the given fd is actually valid, for error recovery */ 1893/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 1894inline_size int ecb_cold
1010fd_valid (int fd) 1895fd_valid (int fd)
1011{ 1896{
1012#ifdef _WIN32 1897#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1898 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 1899#else
1015 return fcntl (fd, F_GETFD) != -1; 1900 return fcntl (fd, F_GETFD) != -1;
1016#endif 1901#endif
1017} 1902}
1018 1903
1019/* called on EBADF to verify fds */ 1904/* called on EBADF to verify fds */
1020static void noinline 1905static void noinline ecb_cold
1021fd_ebadf (EV_P) 1906fd_ebadf (EV_P)
1022{ 1907{
1023 int fd; 1908 int fd;
1024 1909
1025 for (fd = 0; fd < anfdmax; ++fd) 1910 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 1912 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 1913 fd_kill (EV_A_ fd);
1029} 1914}
1030 1915
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 1916/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 1917static void noinline ecb_cold
1033fd_enomem (EV_P) 1918fd_enomem (EV_P)
1034{ 1919{
1035 int fd; 1920 int fd;
1036 1921
1037 for (fd = anfdmax; fd--; ) 1922 for (fd = anfdmax; fd--; )
… …
1232 2117
1233/*****************************************************************************/ 2118/*****************************************************************************/
1234 2119
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2120#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2121
1237static void noinline 2122static void noinline ecb_cold
1238evpipe_init (EV_P) 2123evpipe_init (EV_P)
1239{ 2124{
1240 if (!ev_is_active (&pipe_w)) 2125 if (!ev_is_active (&pipe_w))
1241 { 2126 {
2127 int fds [2];
2128
1242# if EV_USE_EVENTFD 2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2132 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2133 fds [1] = eventfd (0, 0);
1246 2134
1247 if (evfd >= 0) 2135 if (fds [1] < 0)
2136# endif
1248 { 2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
1249 evpipe [0] = -1; 2144 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2145
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2146 if (evpipe [1] < 0)
2147 evpipe [1] = fds [1]; /* first call, set write fd */
2148 else
2149 {
2150 /* on subsequent calls, do not change evpipe [1] */
2151 /* so that evpipe_write can always rely on its value. */
2152 /* this branch does not do anything sensible on windows, */
2153 /* so must not be executed on windows */
2154
2155 dup2 (fds [1], evpipe [1]);
2156 close (fds [1]);
2157 }
2158
2159 fd_intern (evpipe [1]);
2160
2161 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2162 ev_io_start (EV_A_ &pipe_w);
2163 ev_unref (EV_A); /* watcher should not keep loop alive */
2164 }
2165}
2166
2167inline_speed void
2168evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2169{
2170 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2171
2172 if (expect_true (*flag))
2173 return;
2174
2175 *flag = 1;
2176 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2177
2178 pipe_write_skipped = 1;
2179
2180 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2181
2182 if (pipe_write_wanted)
2183 {
2184 int old_errno;
2185
2186 pipe_write_skipped = 0;
2187 ECB_MEMORY_FENCE_RELEASE;
2188
2189 old_errno = errno; /* save errno because write will clobber it */
2190
2191#if EV_USE_EVENTFD
2192 if (evpipe [0] < 0)
2193 {
2194 uint64_t counter = 1;
2195 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2196 }
1253 else 2197 else
1254# endif 2198#endif
1255 { 2199 {
1256 while (pipe (evpipe)) 2200#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1258 2202 DWORD sent;
1259 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1260 fd_intern (evpipe [1]); 2204 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else
2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1262 } 2209 }
1263
1264 ev_io_start (EV_A_ &pipe_w);
1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1266 }
1267}
1268
1269inline_size void
1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271{
1272 if (!*flag)
1273 {
1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1276
1277 *flag = 1;
1278
1279#if EV_USE_EVENTFD
1280 if (evfd >= 0)
1281 {
1282 uint64_t counter = 1;
1283 write (evfd, &counter, sizeof (uint64_t));
1284 }
1285 else
1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1292 write (evpipe [1], &dummy, 1);
1293 2210
1294 errno = old_errno; 2211 errno = old_errno;
1295 } 2212 }
1296} 2213}
1297 2214
… …
1300static void 2217static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2218pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2219{
1303 int i; 2220 int i;
1304 2221
2222 if (revents & EV_READ)
2223 {
1305#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1307 { 2226 {
1308 uint64_t counter; 2227 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2229 }
1311 else 2230 else
1312#endif 2231#endif
1313 { 2232 {
1314 char dummy; 2233 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2234#ifdef _WIN32
2235 WSABUF buf;
2236 DWORD recvd;
2237 DWORD flags = 0;
2238 buf.buf = dummy;
2239 buf.len = sizeof (dummy);
2240 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2241#else
1316 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
2244 }
1317 } 2245 }
1318 2246
2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2250
2251#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2252 if (sig_pending)
1320 { 2253 {
1321 sig_pending = 0; 2254 sig_pending = 0;
2255
2256 ECB_MEMORY_FENCE;
1322 2257
1323 for (i = EV_NSIG - 1; i--; ) 2258 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2259 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2261 }
2262#endif
1327 2263
1328#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1329 if (async_pending) 2265 if (async_pending)
1330 { 2266 {
1331 async_pending = 0; 2267 async_pending = 0;
2268
2269 ECB_MEMORY_FENCE;
1332 2270
1333 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1335 { 2273 {
1336 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2277 }
1339 } 2278 }
1340#endif 2279#endif
1341} 2280}
1342 2281
1343/*****************************************************************************/ 2282/*****************************************************************************/
1344 2283
2284void
2285ev_feed_signal (int signum) EV_THROW
2286{
2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
2290 EV_A = signals [signum - 1].loop;
2291
2292 if (!EV_A)
2293 return;
2294#endif
2295
2296 signals [signum - 1].pending = 1;
2297 evpipe_write (EV_A_ &sig_pending);
2298}
2299
1345static void 2300static void
1346ev_sighandler (int signum) 2301ev_sighandler (int signum)
1347{ 2302{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2303#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2304 signal (signum, ev_sighandler);
1354#endif 2305#endif
1355 2306
1356 signals [signum - 1].pending = 1; 2307 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2308}
1359 2309
1360void noinline 2310void noinline
1361ev_feed_signal_event (EV_P_ int signum) 2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
1362{ 2312{
1363 WL w; 2313 WL w;
1364 2314
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2316 return;
1367 2317
1368 --signum; 2318 --signum;
1369 2319
1370#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
… …
1374 if (expect_false (signals [signum].loop != EV_A)) 2324 if (expect_false (signals [signum].loop != EV_A))
1375 return; 2325 return;
1376#endif 2326#endif
1377 2327
1378 signals [signum].pending = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1379 2330
1380 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2333}
1383 2334
… …
1462 2413
1463#endif 2414#endif
1464 2415
1465/*****************************************************************************/ 2416/*****************************************************************************/
1466 2417
2418#if EV_USE_IOCP
2419# include "ev_iocp.c"
2420#endif
1467#if EV_USE_PORT 2421#if EV_USE_PORT
1468# include "ev_port.c" 2422# include "ev_port.c"
1469#endif 2423#endif
1470#if EV_USE_KQUEUE 2424#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2425# include "ev_kqueue.c"
… …
1478#endif 2432#endif
1479#if EV_USE_SELECT 2433#if EV_USE_SELECT
1480# include "ev_select.c" 2434# include "ev_select.c"
1481#endif 2435#endif
1482 2436
1483int 2437int ecb_cold
1484ev_version_major (void) 2438ev_version_major (void) EV_THROW
1485{ 2439{
1486 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1487} 2441}
1488 2442
1489int 2443int ecb_cold
1490ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1491{ 2445{
1492 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1493} 2447}
1494 2448
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2449/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2450int inline_size ecb_cold
1497enable_secure (void) 2451enable_secure (void)
1498{ 2452{
1499#ifdef _WIN32 2453#ifdef _WIN32
1500 return 0; 2454 return 0;
1501#else 2455#else
1502 return getuid () != geteuid () 2456 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2457 || getgid () != getegid ();
1504#endif 2458#endif
1505} 2459}
1506 2460
1507unsigned int 2461unsigned int ecb_cold
1508ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1509{ 2463{
1510 unsigned int flags = 0; 2464 unsigned int flags = 0;
1511 2465
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2470 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1517 2471
1518 return flags; 2472 return flags;
1519} 2473}
1520 2474
1521unsigned int 2475unsigned int ecb_cold
1522ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1523{ 2477{
1524 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1525 2479
1526#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1538#endif 2492#endif
1539 2493
1540 return flags; 2494 return flags;
1541} 2495}
1542 2496
2497unsigned int ecb_cold
2498ev_embeddable_backends (void) EV_THROW
2499{
2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2501
2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2503 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2504 flags &= ~EVBACKEND_EPOLL;
2505
2506 return flags;
2507}
2508
1543unsigned int 2509unsigned int
1544ev_embeddable_backends (void)
1545{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1547
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */
1550 flags &= ~EVBACKEND_EPOLL;
1551
1552 return flags;
1553}
1554
1555unsigned int
1556ev_backend (EV_P) 2510ev_backend (EV_P) EV_THROW
1557{ 2511{
1558 return backend; 2512 return backend;
1559} 2513}
1560 2514
1561#if EV_FEATURE_API 2515#if EV_FEATURE_API
1562unsigned int 2516unsigned int
1563ev_iteration (EV_P) 2517ev_iteration (EV_P) EV_THROW
1564{ 2518{
1565 return loop_count; 2519 return loop_count;
1566} 2520}
1567 2521
1568unsigned int 2522unsigned int
1569ev_depth (EV_P) 2523ev_depth (EV_P) EV_THROW
1570{ 2524{
1571 return loop_depth; 2525 return loop_depth;
1572} 2526}
1573 2527
1574void 2528void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1576{ 2530{
1577 io_blocktime = interval; 2531 io_blocktime = interval;
1578} 2532}
1579 2533
1580void 2534void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1582{ 2536{
1583 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1584} 2538}
1585 2539
1586void 2540void
1587ev_set_userdata (EV_P_ void *data) 2541ev_set_userdata (EV_P_ void *data) EV_THROW
1588{ 2542{
1589 userdata = data; 2543 userdata = data;
1590} 2544}
1591 2545
1592void * 2546void *
1593ev_userdata (EV_P) 2547ev_userdata (EV_P) EV_THROW
1594{ 2548{
1595 return userdata; 2549 return userdata;
1596} 2550}
1597 2551
2552void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1599{ 2554{
1600 invoke_cb = invoke_pending_cb; 2555 invoke_cb = invoke_pending_cb;
1601} 2556}
1602 2557
2558void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2559ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1604{ 2560{
1605 release_cb = release; 2561 release_cb = release;
1606 acquire_cb = acquire; 2562 acquire_cb = acquire;
1607} 2563}
1608#endif 2564#endif
1609 2565
1610/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1611static void noinline 2567static void noinline ecb_cold
1612loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1613{ 2569{
1614 if (!backend) 2570 if (!backend)
1615 { 2571 {
2572 origflags = flags;
2573
1616#if EV_USE_REALTIME 2574#if EV_USE_REALTIME
1617 if (!have_realtime) 2575 if (!have_realtime)
1618 { 2576 {
1619 struct timespec ts; 2577 struct timespec ts;
1620 2578
… …
1642 if (!(flags & EVFLAG_NOENV) 2600 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 2601 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 2602 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 2603 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 2604
1647 ev_rt_now = ev_time (); 2605 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 2606 mn_now = get_clock ();
1649 now_floor = mn_now; 2607 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 2608 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 2609#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 2610 invoke_cb = ev_invoke_pending;
1653#endif 2611#endif
1654 2612
1655 io_blocktime = 0.; 2613 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 2614 timeout_blocktime = 0.;
1657 backend = 0; 2615 backend = 0;
1658 backend_fd = -1; 2616 backend_fd = -1;
1659 sig_pending = 0; 2617 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1661 async_pending = 0; 2619 async_pending = 0;
1662#endif 2620#endif
2621 pipe_write_skipped = 0;
2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 2625#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 2627#endif
1666#if EV_USE_SIGNALFD 2628#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 2630#endif
1669 2631
1670 if (!(flags & 0x0000ffffU)) 2632 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 2633 flags |= ev_recommended_backends ();
1672 2634
2635#if EV_USE_IOCP
2636 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2637#endif
1673#if EV_USE_PORT 2638#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 2640#endif
1676#if EV_USE_KQUEUE 2641#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2642 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1694#endif 2659#endif
1695 } 2660 }
1696} 2661}
1697 2662
1698/* free up a loop structure */ 2663/* free up a loop structure */
1699static void noinline 2664void ecb_cold
1700loop_destroy (EV_P) 2665ev_loop_destroy (EV_P)
1701{ 2666{
1702 int i; 2667 int i;
2668
2669#if EV_MULTIPLICITY
2670 /* mimic free (0) */
2671 if (!EV_A)
2672 return;
2673#endif
2674
2675#if EV_CLEANUP_ENABLE
2676 /* queue cleanup watchers (and execute them) */
2677 if (expect_false (cleanupcnt))
2678 {
2679 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2680 EV_INVOKE_PENDING;
2681 }
2682#endif
2683
2684#if EV_CHILD_ENABLE
2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2686 {
2687 ev_ref (EV_A); /* child watcher */
2688 ev_signal_stop (EV_A_ &childev);
2689 }
2690#endif
1703 2691
1704 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1705 { 2693 {
1706 /*ev_ref (EV_A);*/ 2694 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 2696
1709#if EV_USE_EVENTFD
1710 if (evfd >= 0)
1711 close (evfd);
1712#endif
1713
1714 if (evpipe [0] >= 0)
1715 {
1716 EV_WIN32_CLOSE_FD (evpipe [0]); 2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 2699 }
1720 2700
1721#if EV_USE_SIGNALFD 2701#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 2702 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 2703 close (sigfd);
… …
1729#endif 2709#endif
1730 2710
1731 if (backend_fd >= 0) 2711 if (backend_fd >= 0)
1732 close (backend_fd); 2712 close (backend_fd);
1733 2713
2714#if EV_USE_IOCP
2715 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2716#endif
1734#if EV_USE_PORT 2717#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2718 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 2719#endif
1737#if EV_USE_KQUEUE 2720#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2721 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1765 array_free (periodic, EMPTY); 2748 array_free (periodic, EMPTY);
1766#endif 2749#endif
1767#if EV_FORK_ENABLE 2750#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 2751 array_free (fork, EMPTY);
1769#endif 2752#endif
2753#if EV_CLEANUP_ENABLE
2754 array_free (cleanup, EMPTY);
2755#endif
1770 array_free (prepare, EMPTY); 2756 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 2757 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 2758#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 2759 array_free (async, EMPTY);
1774#endif 2760#endif
1775 2761
1776 backend = 0; 2762 backend = 0;
2763
2764#if EV_MULTIPLICITY
2765 if (ev_is_default_loop (EV_A))
2766#endif
2767 ev_default_loop_ptr = 0;
2768#if EV_MULTIPLICITY
2769 else
2770 ev_free (EV_A);
2771#endif
1777} 2772}
1778 2773
1779#if EV_USE_INOTIFY 2774#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 2775inline_size void infy_fork (EV_P);
1781#endif 2776#endif
… …
1794#endif 2789#endif
1795#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 2791 infy_fork (EV_A);
1797#endif 2792#endif
1798 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
1800 { 2796 {
1801 /* this "locks" the handlers against writing to the pipe */ 2797 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802 /* while we modify the fd vars */
1803 sig_pending = 1;
1804#if EV_ASYNC_ENABLE
1805 async_pending = 1;
1806#endif
1807 2798
1808 ev_ref (EV_A); 2799 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
1810 2801
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1820 }
1821 2804
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
1825 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1826#endif
1827 } 2808 }
2809#endif
1828 2810
1829 postfork = 0; 2811 postfork = 0;
1830} 2812}
1831 2813
1832#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
1833 2815
1834struct ev_loop * 2816struct ev_loop * ecb_cold
1835ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
1836{ 2818{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 2820
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
1841 2823
1842 if (ev_backend (EV_A)) 2824 if (ev_backend (EV_A))
1843 return EV_A; 2825 return EV_A;
1844 2826
2827 ev_free (EV_A);
1845 return 0; 2828 return 0;
1846} 2829}
1847 2830
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 2831#endif /* multiplicity */
1861 2832
1862#if EV_VERIFY 2833#if EV_VERIFY
1863static void noinline 2834static void noinline ecb_cold
1864verify_watcher (EV_P_ W w) 2835verify_watcher (EV_P_ W w)
1865{ 2836{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2837 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 2838
1868 if (w->pending) 2839 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2840 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 2841}
1871 2842
1872static void noinline 2843static void noinline ecb_cold
1873verify_heap (EV_P_ ANHE *heap, int N) 2844verify_heap (EV_P_ ANHE *heap, int N)
1874{ 2845{
1875 int i; 2846 int i;
1876 2847
1877 for (i = HEAP0; i < N + HEAP0; ++i) 2848 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 2853
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2854 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 2855 }
1885} 2856}
1886 2857
1887static void noinline 2858static void noinline ecb_cold
1888array_verify (EV_P_ W *ws, int cnt) 2859array_verify (EV_P_ W *ws, int cnt)
1889{ 2860{
1890 while (cnt--) 2861 while (cnt--)
1891 { 2862 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2863 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 2865 }
1895} 2866}
1896#endif 2867#endif
1897 2868
1898#if EV_FEATURE_API 2869#if EV_FEATURE_API
1899void 2870void ecb_cold
1900ev_verify (EV_P) 2871ev_verify (EV_P) EV_THROW
1901{ 2872{
1902#if EV_VERIFY 2873#if EV_VERIFY
1903 int i; 2874 int i;
1904 WL w; 2875 WL w, w2;
1905 2876
1906 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
1907 2878
1908 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 2882
1912 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
1914 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 2889 {
1916 verify_watcher (EV_A_ (W)w); 2890 verify_watcher (EV_A_ (W)w);
2891
2892 if (j++ & 1)
2893 {
2894 assert (("libev: io watcher list contains a loop", w != w2));
2895 w2 = w2->next;
2896 }
2897
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 2900 }
2901 }
1920 2902
1921 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
1923 2905
1924#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 2921#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 2922 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 2923 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 2924#endif
1943 2925
2926#if EV_CLEANUP_ENABLE
2927 assert (cleanupmax >= cleanupcnt);
2928 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2929#endif
2930
1944#if EV_ASYNC_ENABLE 2931#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 2932 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 2933 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 2934#endif
1948 2935
… …
1965#endif 2952#endif
1966} 2953}
1967#endif 2954#endif
1968 2955
1969#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
1970struct ev_loop * 2957struct ev_loop * ecb_cold
1971ev_default_loop_init (unsigned int flags)
1972#else 2958#else
1973int 2959int
2960#endif
1974ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
1975#endif
1976{ 2962{
1977 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
1978 { 2964 {
1979#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 2985
2000 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
2001} 2987}
2002 2988
2003void 2989void
2004ev_default_destroy (void) 2990ev_loop_fork (EV_P) EV_THROW
2005{ 2991{
2006#if EV_MULTIPLICITY 2992 postfork = 1;
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */
2028} 2993}
2029 2994
2030/*****************************************************************************/ 2995/*****************************************************************************/
2031 2996
2032void 2997void
… …
2034{ 2999{
2035 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
2036} 3001}
2037 3002
2038unsigned int 3003unsigned int
2039ev_pending_count (EV_P) 3004ev_pending_count (EV_P) EV_THROW
2040{ 3005{
2041 int pri; 3006 int pri;
2042 unsigned int count = 0; 3007 unsigned int count = 0;
2043 3008
2044 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
… …
2048} 3013}
2049 3014
2050void noinline 3015void noinline
2051ev_invoke_pending (EV_P) 3016ev_invoke_pending (EV_P)
2052{ 3017{
2053 int pri; 3018 pendingpri = NUMPRI;
2054 3019
2055 for (pri = NUMPRI; pri--; ) 3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
2056 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
2057 { 3025 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3027
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062
2063 p->w->pending = 0; 3028 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
2066 } 3031 }
3032 }
2067} 3033}
2068 3034
2069#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3094 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3095 }
2130} 3096}
2131 3097
2132#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
3099
3100static void noinline
3101periodic_recalc (EV_P_ ev_periodic *w)
3102{
3103 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3104 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3105
3106 /* the above almost always errs on the low side */
3107 while (at <= ev_rt_now)
3108 {
3109 ev_tstamp nat = at + w->interval;
3110
3111 /* when resolution fails us, we use ev_rt_now */
3112 if (expect_false (nat == at))
3113 {
3114 at = ev_rt_now;
3115 break;
3116 }
3117
3118 at = nat;
3119 }
3120
3121 ev_at (w) = at;
3122}
3123
2133/* make periodics pending */ 3124/* make periodics pending */
2134inline_size void 3125inline_size void
2135periodics_reify (EV_P) 3126periodics_reify (EV_P)
2136{ 3127{
2137 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2138 3129
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3131 {
2141 int feed_count = 0;
2142
2143 do 3132 do
2144 { 3133 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3135
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3136 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3145 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3146 downheap (periodics, periodiccnt, HEAP0);
2158 } 3147 }
2159 else if (w->interval) 3148 else if (w->interval)
2160 { 3149 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3150 periodic_recalc (EV_A_ w);
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]); 3151 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3152 downheap (periodics, periodiccnt, HEAP0);
2177 } 3153 }
2178 else 3154 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3163 }
2188} 3164}
2189 3165
2190/* simply recalculate all periodics */ 3166/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3167/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3168static void noinline ecb_cold
2193periodics_reschedule (EV_P) 3169periodics_reschedule (EV_P)
2194{ 3170{
2195 int i; 3171 int i;
2196 3172
2197 /* adjust periodics after time jump */ 3173 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3177
2202 if (w->reschedule_cb) 3178 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3180 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3181 periodic_recalc (EV_A_ w);
2206 3182
2207 ANHE_at_cache (periodics [i]); 3183 ANHE_at_cache (periodics [i]);
2208 } 3184 }
2209 3185
2210 reheap (periodics, periodiccnt); 3186 reheap (periodics, periodiccnt);
2211} 3187}
2212#endif 3188#endif
2213 3189
2214/* adjust all timers by a given offset */ 3190/* adjust all timers by a given offset */
2215static void noinline 3191static void noinline ecb_cold
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3192timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3193{
2218 int i; 3194 int i;
2219 3195
2220 for (i = 0; i < timercnt; ++i) 3196 for (i = 0; i < timercnt; ++i)
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3233 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3234 * in the unlikely event of having been preempted here.
2259 */ 3235 */
2260 for (i = 4; --i; ) 3236 for (i = 4; --i; )
2261 { 3237 {
3238 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3239 rtmn_diff = ev_rt_now - mn_now;
2263 3240
3241 diff = odiff - rtmn_diff;
3242
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3243 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265 return; /* all is well */ 3244 return; /* all is well */
2266 3245
2267 ev_rt_now = ev_time (); 3246 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3247 mn_now = get_clock ();
2269 now_floor = mn_now; 3248 now_floor = mn_now;
… …
2291 3270
2292 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2293 } 3272 }
2294} 3273}
2295 3274
2296void 3275int
2297ev_run (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2298{ 3277{
2299#if EV_FEATURE_API 3278#if EV_FEATURE_API
2300 ++loop_depth; 3279 ++loop_depth;
2301#endif 3280#endif
… …
2359 ev_tstamp prev_mn_now = mn_now; 3338 ev_tstamp prev_mn_now = mn_now;
2360 3339
2361 /* update time to cancel out callback processing overhead */ 3340 /* update time to cancel out callback processing overhead */
2362 time_update (EV_A_ 1e100); 3341 time_update (EV_A_ 1e100);
2363 3342
3343 /* from now on, we want a pipe-wake-up */
3344 pipe_write_wanted = 1;
3345
3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3347
2364 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2365 { 3349 {
2366 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2367 3351
2368 if (timercnt) 3352 if (timercnt)
2369 { 3353 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3354 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3355 if (waittime > to) waittime = to;
2372 } 3356 }
2373 3357
2374#if EV_PERIODIC_ENABLE 3358#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3359 if (periodiccnt)
2376 { 3360 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3361 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3362 if (waittime > to) waittime = to;
2379 } 3363 }
2380#endif 3364#endif
2381 3365
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3366 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3367 if (expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3368 waittime = timeout_blocktime;
3369
3370 /* at this point, we NEED to wait, so we have to ensure */
3371 /* to pass a minimum nonzero value to the backend */
3372 if (expect_false (waittime < backend_mintime))
3373 waittime = backend_mintime;
2385 3374
2386 /* extra check because io_blocktime is commonly 0 */ 3375 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3376 if (expect_false (io_blocktime))
2388 { 3377 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3378 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 3379
2391 if (sleeptime > waittime - backend_fudge) 3380 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 3381 sleeptime = waittime - backend_mintime;
2393 3382
2394 if (expect_true (sleeptime > 0.)) 3383 if (expect_true (sleeptime > 0.))
2395 { 3384 {
2396 ev_sleep (sleeptime); 3385 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 3386 waittime -= sleeptime;
… …
2404#endif 3393#endif
2405 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2408 3397
3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
3401 if (pipe_write_skipped)
3402 {
3403 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3405 }
3406
3407
2409 /* update ev_rt_now, do magic */ 3408 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 3409 time_update (EV_A_ waittime + sleeptime);
2411 } 3410 }
2412 3411
2413 /* queue pending timers and reschedule them */ 3412 /* queue pending timers and reschedule them */
… …
2439 loop_done = EVBREAK_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
2440 3439
2441#if EV_FEATURE_API 3440#if EV_FEATURE_API
2442 --loop_depth; 3441 --loop_depth;
2443#endif 3442#endif
3443
3444 return activecnt;
2444} 3445}
2445 3446
2446void 3447void
2447ev_break (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2448{ 3449{
2449 loop_done = how; 3450 loop_done = how;
2450} 3451}
2451 3452
2452void 3453void
2453ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2454{ 3455{
2455 ++activecnt; 3456 ++activecnt;
2456} 3457}
2457 3458
2458void 3459void
2459ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2460{ 3461{
2461 --activecnt; 3462 --activecnt;
2462} 3463}
2463 3464
2464void 3465void
2465ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2466{ 3467{
2467 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2468} 3469}
2469 3470
2470void 3471void
2471ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2472{ 3473{
2473 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2474} 3475}
2475 3476
2476void 3477void
2477ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2478{ 3479{
2479 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2480 3481
2481 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2521 w->pending = 0; 3522 w->pending = 0;
2522 } 3523 }
2523} 3524}
2524 3525
2525int 3526int
2526ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2527{ 3528{
2528 W w_ = (W)w; 3529 W w_ = (W)w;
2529 int pending = w_->pending; 3530 int pending = w_->pending;
2530 3531
2531 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2564} 3565}
2565 3566
2566/*****************************************************************************/ 3567/*****************************************************************************/
2567 3568
2568void noinline 3569void noinline
2569ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2570{ 3571{
2571 int fd = w->fd; 3572 int fd = w->fd;
2572 3573
2573 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2574 return; 3575 return;
… …
2580 3581
2581 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2583 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2584 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3589 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2587 3591
2588 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2589} 3593}
2590 3594
2591void noinline 3595void noinline
2592ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2593{ 3597{
2594 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2596 return; 3600 return;
2597 3601
… …
2606 3610
2607 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2608} 3612}
2609 3613
2610void noinline 3614void noinline
2611ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2612{ 3616{
2613 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2614 return; 3618 return;
2615 3619
2616 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2630 3634
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 3636}
2633 3637
2634void noinline 3638void noinline
2635ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2636{ 3640{
2637 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2639 return; 3643 return;
2640 3644
… …
2660 3664
2661 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2662} 3666}
2663 3667
2664void noinline 3668void noinline
2665ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2666{ 3670{
2667 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2668 3674
2669 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2670 { 3676 {
2671 if (w->repeat) 3677 if (w->repeat)
2672 { 3678 {
… …
2685 3691
2686 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2687} 3693}
2688 3694
2689ev_tstamp 3695ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2691{ 3697{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693} 3699}
2694 3700
2695#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2696void noinline 3702void noinline
2697ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2698{ 3704{
2699 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2700 return; 3706 return;
2701 3707
2702 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3709 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 3710 else if (w->interval)
2705 { 3711 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3712 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 3713 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 3714 }
2710 else 3715 else
2711 ev_at (w) = w->offset; 3716 ev_at (w) = w->offset;
2712 3717
2713 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
… …
2723 3728
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 3730}
2726 3731
2727void noinline 3732void noinline
2728ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2729{ 3734{
2730 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
2732 return; 3737 return;
2733 3738
… …
2751 3756
2752 EV_FREQUENT_CHECK; 3757 EV_FREQUENT_CHECK;
2753} 3758}
2754 3759
2755void noinline 3760void noinline
2756ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2757{ 3762{
2758 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
2761} 3766}
… …
2766#endif 3771#endif
2767 3772
2768#if EV_SIGNAL_ENABLE 3773#if EV_SIGNAL_ENABLE
2769 3774
2770void noinline 3775void noinline
2771ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2772{ 3777{
2773 if (expect_false (ev_is_active (w))) 3778 if (expect_false (ev_is_active (w)))
2774 return; 3779 return;
2775 3780
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3781 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2778#if EV_MULTIPLICITY 3783#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 3784 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 3786
2782 signals [w->signum - 1].loop = EV_A; 3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
2783#endif 3789#endif
2784 3790
2785 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2786 3792
2787#if EV_USE_SIGNALFD 3793#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 3840 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 3841 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3842 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 3843 sigaction (w->signum, &sa, 0);
2838 3844
3845 if (origflags & EVFLAG_NOSIGMASK)
3846 {
2839 sigemptyset (&sa.sa_mask); 3847 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 3848 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3849 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3850 }
2842#endif 3851#endif
2843 } 3852 }
2844 3853
2845 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
2846} 3855}
2847 3856
2848void noinline 3857void noinline
2849ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2850{ 3859{
2851 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
2853 return; 3862 return;
2854 3863
… …
2885#endif 3894#endif
2886 3895
2887#if EV_CHILD_ENABLE 3896#if EV_CHILD_ENABLE
2888 3897
2889void 3898void
2890ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
2891{ 3900{
2892#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3902 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 3903#endif
2895 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
… …
2902 3911
2903 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2904} 3913}
2905 3914
2906void 3915void
2907ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
2908{ 3917{
2909 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
2911 return; 3920 return;
2912 3921
… …
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 3949
2941static void noinline 3950static void noinline
2942infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
2943{ 3952{
2944 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3953 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3956 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 3957
2946 if (w->wd >= 0) 3958 if (w->wd >= 0)
2947 { 3959 {
2948 struct statfs sfs; 3960 struct statfs sfs;
2949 3961
… …
2953 3965
2954 if (!fs_2625) 3966 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 3968 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 3972 || sfs.f_type == 0xEF53 /* ext2/3 */
3973 || sfs.f_type == 0x72b6 /* jffs2 */
3974 || sfs.f_type == 0x858458f6 /* ramfs */
3975 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 3978 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 3979 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 3980 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 3982 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3983 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 3984 }
… …
2987 if (!pend || pend == path) 4005 if (!pend || pend == path)
2988 break; 4006 break;
2989 4007
2990 *pend = 0; 4008 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4009 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4010 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4011 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4012 }
2995 } 4013 }
2996 4014
2997 if (w->wd >= 0) 4015 if (w->wd >= 0)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4082 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4083 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4084 }
3067} 4085}
3068 4086
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void 4087inline_size void ecb_cold
3102ev_check_2625 (EV_P) 4088ev_check_2625 (EV_P)
3103{ 4089{
3104 /* kernels < 2.6.25 are borked 4090 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4092 */
… …
3111} 4097}
3112 4098
3113inline_size int 4099inline_size int
3114infy_newfd (void) 4100infy_newfd (void)
3115{ 4101{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4104 if (fd >= 0)
3119 return fd; 4105 return fd;
3120#endif 4106#endif
3121 return inotify_init (); 4107 return inotify_init ();
… …
3196#else 4182#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4184#endif
3199 4185
3200void 4186void
3201ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3202{ 4188{
3203 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4232 }
3247} 4233}
3248 4234
3249void 4235void
3250ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3251{ 4237{
3252 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
3253 return; 4239 return;
3254 4240
3255 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
3276 4262
3277 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
3278} 4264}
3279 4265
3280void 4266void
3281ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3282{ 4268{
3283 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
3285 return; 4271 return;
3286 4272
… …
3302} 4288}
3303#endif 4289#endif
3304 4290
3305#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
3306void 4292void
3307ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3308{ 4294{
3309 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3310 return; 4296 return;
3311 4297
3312 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
3325 4311
3326 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3327} 4313}
3328 4314
3329void 4315void
3330ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3331{ 4317{
3332 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
3334 return; 4320 return;
3335 4321
… …
3349} 4335}
3350#endif 4336#endif
3351 4337
3352#if EV_PREPARE_ENABLE 4338#if EV_PREPARE_ENABLE
3353void 4339void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3355{ 4341{
3356 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
3357 return; 4343 return;
3358 4344
3359 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
3364 4350
3365 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3366} 4352}
3367 4353
3368void 4354void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3370{ 4356{
3371 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3373 return; 4359 return;
3374 4360
… …
3387} 4373}
3388#endif 4374#endif
3389 4375
3390#if EV_CHECK_ENABLE 4376#if EV_CHECK_ENABLE
3391void 4377void
3392ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
3393{ 4379{
3394 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
3395 return; 4381 return;
3396 4382
3397 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
3402 4388
3403 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3404} 4390}
3405 4391
3406void 4392void
3407ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
3408{ 4394{
3409 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3411 return; 4397 return;
3412 4398
… …
3425} 4411}
3426#endif 4412#endif
3427 4413
3428#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
3429void noinline 4415void noinline
3430ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3431{ 4417{
3432 ev_run (w->other, EVRUN_NOWAIT); 4418 ev_run (w->other, EVRUN_NOWAIT);
3433} 4419}
3434 4420
3435static void 4421static void
… …
3483 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3484} 4470}
3485#endif 4471#endif
3486 4472
3487void 4473void
3488ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3489{ 4475{
3490 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3491 return; 4477 return;
3492 4478
3493 { 4479 {
… …
3514 4500
3515 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3516} 4502}
3517 4503
3518void 4504void
3519ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3520{ 4506{
3521 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3523 return; 4509 return;
3524 4510
… …
3534} 4520}
3535#endif 4521#endif
3536 4522
3537#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3538void 4524void
3539ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3540{ 4526{
3541 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3542 return; 4528 return;
3543 4529
3544 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3549 4535
3550 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3551} 4537}
3552 4538
3553void 4539void
3554ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3555{ 4541{
3556 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3558 return; 4544 return;
3559 4545
… …
3570 4556
3571 EV_FREQUENT_CHECK; 4557 EV_FREQUENT_CHECK;
3572} 4558}
3573#endif 4559#endif
3574 4560
4561#if EV_CLEANUP_ENABLE
4562void
4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4564{
4565 if (expect_false (ev_is_active (w)))
4566 return;
4567
4568 EV_FREQUENT_CHECK;
4569
4570 ev_start (EV_A_ (W)w, ++cleanupcnt);
4571 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4572 cleanups [cleanupcnt - 1] = w;
4573
4574 /* cleanup watchers should never keep a refcount on the loop */
4575 ev_unref (EV_A);
4576 EV_FREQUENT_CHECK;
4577}
4578
4579void
4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4581{
4582 clear_pending (EV_A_ (W)w);
4583 if (expect_false (!ev_is_active (w)))
4584 return;
4585
4586 EV_FREQUENT_CHECK;
4587 ev_ref (EV_A);
4588
4589 {
4590 int active = ev_active (w);
4591
4592 cleanups [active - 1] = cleanups [--cleanupcnt];
4593 ev_active (cleanups [active - 1]) = active;
4594 }
4595
4596 ev_stop (EV_A_ (W)w);
4597
4598 EV_FREQUENT_CHECK;
4599}
4600#endif
4601
3575#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3576void 4603void
3577ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3578{ 4605{
3579 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3580 return; 4607 return;
3581 4608
3582 w->sent = 0; 4609 w->sent = 0;
… …
3591 4618
3592 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3593} 4620}
3594 4621
3595void 4622void
3596ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3597{ 4624{
3598 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3600 return; 4627 return;
3601 4628
… …
3612 4639
3613 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3614} 4641}
3615 4642
3616void 4643void
3617ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3618{ 4645{
3619 w->sent = 1; 4646 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 4647 evpipe_write (EV_A_ &async_pending);
3621} 4648}
3622#endif 4649#endif
… …
3659 4686
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4687 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 4688}
3662 4689
3663void 4690void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4691ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3665{ 4692{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4693 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3667 4694
3668 if (expect_false (!once)) 4695 if (expect_false (!once))
3669 { 4696 {
… …
3690} 4717}
3691 4718
3692/*****************************************************************************/ 4719/*****************************************************************************/
3693 4720
3694#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3695void 4722void ecb_cold
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3697{ 4724{
3698 int i, j; 4725 int i, j;
3699 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3700 4727
3701 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 4772#endif
3746 4773
3747#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 4779#endif
3753 4780
3754#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
3807 4834
3808#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
3810#endif 4837#endif
3811 4838
3812#ifdef __cplusplus
3813}
3814#endif
3815

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