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Comparing libev/ev.c (file contents):
Revision 1.352 by root, Thu Oct 21 02:33:08 2010 UTC vs.
Revision 1.469 by root, Fri Sep 5 16:21:19 2014 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) 2007,2008,2009,2010,2011,2012,2013 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 247#endif
235/* but consider reporting it, too! :) */ 248
236# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
237#endif 251#endif
238 252
239#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 256# else
243# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
244# endif 258# endif
245#endif 259#endif
246 260
247#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 264# else
251# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
252# endif 266# endif
253#endif 267#endif
… …
340 354
341#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 357#endif
344 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 378# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
353# else 383# else
… …
356# endif 386# endif
357#endif 387#endif
358 388
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 390
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 391#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
370#endif 394#endif
371 395
… …
378# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
380#endif 404#endif
381 405
382#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 409# include <sys/select.h>
385# endif 410# endif
386#endif 411#endif
387 412
388#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 414# include <sys/statfs.h>
391# include <sys/inotify.h> 415# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
396# endif 420# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 421#endif
402 422
403#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 425# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
412# else 432# else
413# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
414# endif 434# endif
415# endif 435# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 437#endif
424 438
425#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 441# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
434# else 448# else
435# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
436# endif 450# endif
437# endif 451# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 453
443struct signalfd_siginfo 454struct signalfd_siginfo
444{ 455{
445 uint32_t ssi_signo; 456 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
447}; 458};
448# ifdef __cplusplus
449}
450# endif
451#endif 459#endif
452 460
453/**/ 461/**/
454 462
455#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
… …
457#else 465#else
458# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
459#endif 467#endif
460 468
461/* 469/*
462 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 472 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 475
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#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) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 478
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 479#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) 480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
522 */
523
524#ifndef ECB_H
525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
529
530#ifdef _WIN32
531 typedef signed char int8_t;
532 typedef unsigned char uint8_t;
533 typedef signed short int16_t;
534 typedef unsigned short uint16_t;
535 typedef signed int int32_t;
536 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 537 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 539 typedef unsigned long long uint64_t;
540 #else /* _MSC_VER || __BORLANDC__ */
541 typedef signed __int64 int64_t;
542 typedef unsigned __int64 uint64_t;
543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
480#else 553#else
481# define expect(expr,value) (expr) 554 #include <inttypes.h>
482# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
484# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
485# endif 560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
486#endif 568 #endif
569#endif
487 570
571/* many compilers define _GNUC_ to some versions but then only implement
572 * what their idiot authors think are the "more important" extensions,
573 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so.
575 * we try to detect these and simply assume they are not gcc - if they have
576 * an issue with that they should have done it right in the first place.
577 */
578#ifndef ECB_GCC_VERSION
579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
580 #define ECB_GCC_VERSION(major,minor) 0
581 #else
582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
583 #endif
584#endif
585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
610/*****************************************************************************/
611
612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
614
615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0)
621#endif
622
623#ifndef ECB_MEMORY_FENCE
624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
625 #if __i386 || __i386__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #endif
667 #endif
668#endif
669
670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
701 #elif defined _WIN32
702 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
733 /*
734 * if you get undefined symbol references to pthread_mutex_lock,
735 * or failure to find pthread.h, then you should implement
736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
737 * OR provide pthread.h and link against the posix thread library
738 * of your system.
739 */
740 #include <pthread.h>
741 #define ECB_NEEDS_PTHREADS 1
742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
743
744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif
756
757/*****************************************************************************/
758
759#if __cplusplus
760 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__
763#elif ECB_C99
764 #define ecb_inline static inline
765#else
766 #define ecb_inline static
767#endif
768
769#if ECB_GCC_VERSION(3,3)
770 #define ecb_restrict __restrict__
771#elif ECB_C99
772 #define ecb_restrict restrict
773#else
774 #define ecb_restrict
775#endif
776
777typedef int ecb_bool;
778
779#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a
782#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
783
784#define ecb_function_ ecb_inline
785
786#if ECB_GCC_VERSION(3,1)
787 #define ecb_attribute(attrlist) __attribute__(attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
798 #define ecb_is_constant(expr) 0
799 #define ecb_expect(expr,value) (expr)
800 #define ecb_prefetch(addr,rw,locality)
801#endif
802
803/* no emulation for ecb_decltype */
804#if ECB_GCC_VERSION(4,5)
805 #define ecb_decltype(x) __decltype(x)
806#elif ECB_GCC_VERSION(3,0)
807 #define ecb_decltype(x) __typeof(x)
808#endif
809
810#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
816#define ecb_noinline ecb_attribute ((__noinline__))
817#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_artificial ecb_attribute ((__artificial__))
830 #define ecb_hot ecb_attribute ((__hot__))
831 #define ecb_cold ecb_attribute ((__cold__))
832#else
833 #define ecb_artificial
834 #define ecb_hot
835 #define ecb_cold
836#endif
837
838/* put around conditional expressions if you are very sure that the */
839/* expression is mostly true or mostly false. note that these return */
840/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 841#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 842#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
843/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr)
846
847/* count trailing zero bits and count # of one bits */
848#if ECB_GCC_VERSION(3,4)
849 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */
856#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
858 ecb_function_ int
859 ecb_ctz32 (uint32_t x)
860 {
861 int r = 0;
862
863 x &= ~x + 1; /* this isolates the lowest bit */
864
865#if ECB_branchless_on_i386
866 r += !!(x & 0xaaaaaaaa) << 0;
867 r += !!(x & 0xcccccccc) << 1;
868 r += !!(x & 0xf0f0f0f0) << 2;
869 r += !!(x & 0xff00ff00) << 3;
870 r += !!(x & 0xffff0000) << 4;
871#else
872 if (x & 0xaaaaaaaa) r += 1;
873 if (x & 0xcccccccc) r += 2;
874 if (x & 0xf0f0f0f0) r += 4;
875 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16;
877#endif
878
879 return r;
880 }
881
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
883 ecb_function_ int
884 ecb_ctz64 (uint64_t x)
885 {
886 int shift = x & 0xffffffffU ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift;
888 }
889
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
891 ecb_function_ int
892 ecb_popcount32 (uint32_t x)
893 {
894 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101;
898
899 return x >> 24;
900 }
901
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
903 ecb_function_ int ecb_ld32 (uint32_t x)
904 {
905 int r = 0;
906
907 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; }
912
913 return r;
914 }
915
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
917 ecb_function_ int ecb_ld64 (uint64_t x)
918 {
919 int r = 0;
920
921 if (x >> 32) { x >>= 32; r += 32; }
922
923 return r + ecb_ld32 (x);
924 }
925#endif
926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
962/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
965ecb_function_ int
966ecb_popcount64 (uint64_t x)
967{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969}
970
971ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
972ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
973ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
974ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
975ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
976ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
977ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
978ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
988
989#if ECB_GCC_VERSION(4,3)
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
991 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #define ecb_bswap64(x) __builtin_bswap64 (x)
993#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
995 ecb_function_ uint16_t
996 ecb_bswap16 (uint16_t x)
997 {
998 return ecb_rotl16 (x, 8);
999 }
1000
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1002 ecb_function_ uint32_t
1003 ecb_bswap32 (uint32_t x)
1004 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 }
1007
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1009 ecb_function_ uint64_t
1010 ecb_bswap64 (uint64_t x)
1011 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 }
1014#endif
1015
1016#if ECB_GCC_VERSION(4,5)
1017 #define ecb_unreachable() __builtin_unreachable ()
1018#else
1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1021 ecb_inline void ecb_unreachable (void) { }
1022#endif
1023
1024/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1028ecb_inline unsigned char
1029ecb_byteorder_helper (void)
1030{
1031 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
1051}
1052
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1057
1058#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1060#else
1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1078#endif
1079
1080#if ecb_cplusplus_does_not_suck
1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1082 template<typename T, int N>
1083 static inline int ecb_array_length (const T (&arr)[N])
1084 {
1085 return N;
1086 }
1087#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif
1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
1293#endif
1294
1295/* ECB.H END */
1296
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
1308#ifndef ECB_MEMORY_FENCE
1309# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif
1313
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
490#define inline_size static inline 1318#define inline_size ecb_inline
491 1319
492#if EV_FEATURE_CODE 1320#if EV_FEATURE_CODE
493# define inline_speed static inline 1321# define inline_speed ecb_inline
494#else 1322#else
495# define inline_speed static noinline 1323# define inline_speed static noinline
496#endif 1324#endif
497 1325
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1365# include "ev_win32.c"
538#endif 1366#endif
539 1367
540/*****************************************************************************/ 1368/*****************************************************************************/
541 1369
1370/* define a suitable floor function (only used by periodics atm) */
1371
1372#if EV_USE_FLOOR
1373# include <math.h>
1374# define ev_floor(v) floor (v)
1375#else
1376
1377#include <float.h>
1378
1379/* a floor() replacement function, should be independent of ev_tstamp type */
1380static ev_tstamp noinline
1381ev_floor (ev_tstamp v)
1382{
1383 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1386#else
1387 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1388#endif
1389
1390 /* argument too large for an unsigned long? */
1391 if (expect_false (v >= shift))
1392 {
1393 ev_tstamp f;
1394
1395 if (v == v - 1.)
1396 return v; /* very large number */
1397
1398 f = shift * ev_floor (v * (1. / shift));
1399 return f + ev_floor (v - f);
1400 }
1401
1402 /* special treatment for negative args? */
1403 if (expect_false (v < 0.))
1404 {
1405 ev_tstamp f = -ev_floor (-v);
1406
1407 return f - (f == v ? 0 : 1);
1408 }
1409
1410 /* fits into an unsigned long */
1411 return (unsigned long)v;
1412}
1413
1414#endif
1415
1416/*****************************************************************************/
1417
1418#ifdef __linux
1419# include <sys/utsname.h>
1420#endif
1421
1422static unsigned int noinline ecb_cold
1423ev_linux_version (void)
1424{
1425#ifdef __linux
1426 unsigned int v = 0;
1427 struct utsname buf;
1428 int i;
1429 char *p = buf.release;
1430
1431 if (uname (&buf))
1432 return 0;
1433
1434 for (i = 3+1; --i; )
1435 {
1436 unsigned int c = 0;
1437
1438 for (;;)
1439 {
1440 if (*p >= '0' && *p <= '9')
1441 c = c * 10 + *p++ - '0';
1442 else
1443 {
1444 p += *p == '.';
1445 break;
1446 }
1447 }
1448
1449 v = (v << 8) | c;
1450 }
1451
1452 return v;
1453#else
1454 return 0;
1455#endif
1456}
1457
1458/*****************************************************************************/
1459
542#if EV_AVOID_STDIO 1460#if EV_AVOID_STDIO
543static void noinline 1461static void noinline ecb_cold
544ev_printerr (const char *msg) 1462ev_printerr (const char *msg)
545{ 1463{
546 write (STDERR_FILENO, msg, strlen (msg)); 1464 write (STDERR_FILENO, msg, strlen (msg));
547} 1465}
548#endif 1466#endif
549 1467
550static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
551 1469
552void 1470void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1472{
555 syserr_cb = cb; 1473 syserr_cb = cb;
556} 1474}
557 1475
558static void noinline 1476static void noinline ecb_cold
559ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
560{ 1478{
561 if (!msg) 1479 if (!msg)
562 msg = "(libev) system error"; 1480 msg = "(libev) system error";
563 1481
564 if (syserr_cb) 1482 if (syserr_cb)
565 syserr_cb (msg); 1483 syserr_cb (msg);
566 else 1484 else
567 { 1485 {
568#if EV_AVOID_STDIO 1486#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1487 ev_printerr (msg);
572 ev_printerr (": "); 1488 ev_printerr (": ");
573 ev_printerr (err); 1489 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1490 ev_printerr ("\n");
575#else 1491#else
576 perror (msg); 1492 perror (msg);
577#endif 1493#endif
578 abort (); 1494 abort ();
579 } 1495 }
580} 1496}
581 1497
582static void * 1498static void *
583ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1500{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
591 */ 1506 */
592 1507
593 if (size) 1508 if (size)
594 return realloc (ptr, size); 1509 return realloc (ptr, size);
595 1510
596 free (ptr); 1511 free (ptr);
597 return 0; 1512 return 0;
598#endif
599} 1513}
600 1514
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1516
603void 1517void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1519{
606 alloc = cb; 1520 alloc = cb;
607} 1521}
608 1522
609inline_speed void * 1523inline_speed void *
… …
612 ptr = alloc (ptr, size); 1526 ptr = alloc (ptr, size);
613 1527
614 if (!ptr && size) 1528 if (!ptr && size)
615 { 1529 {
616#if EV_AVOID_STDIO 1530#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1531 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1532#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1533 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1534#endif
621 abort (); 1535 abort ();
622 } 1536 }
623 1537
624 return ptr; 1538 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1555 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1556 unsigned char unused;
643#if EV_USE_EPOLL 1557#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1558 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1559#endif
646#if EV_SELECT_IS_WINSOCKET 1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1561 SOCKET handle;
1562#endif
1563#if EV_USE_IOCP
1564 OVERLAPPED or, ow;
648#endif 1565#endif
649} ANFD; 1566} ANFD;
650 1567
651/* stores the pending event set for a given watcher */ 1568/* stores the pending event set for a given watcher */
652typedef struct 1569typedef struct
… …
694 #undef VAR 1611 #undef VAR
695 }; 1612 };
696 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
697 1614
698 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1617
701#else 1618#else
702 1619
703 ev_tstamp ev_rt_now; 1620 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; 1621 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1622 #include "ev_vars.h"
706 #undef VAR 1623 #undef VAR
707 1624
708 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1634# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1635# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1637#endif
721 1638
722#define EVUNLOOP_RECURSE 0x80 1639#define EVBREAK_RECURSE 0x80
723 1640
724/*****************************************************************************/ 1641/*****************************************************************************/
725 1642
726#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1644ev_tstamp
728ev_time (void) 1645ev_time (void) EV_THROW
729{ 1646{
730#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
732 { 1649 {
733 struct timespec ts; 1650 struct timespec ts;
… …
757 return ev_time (); 1674 return ev_time ();
758} 1675}
759 1676
760#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
761ev_tstamp 1678ev_tstamp
762ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
763{ 1680{
764 return ev_rt_now; 1681 return ev_rt_now;
765} 1682}
766#endif 1683#endif
767 1684
768void 1685void
769ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
770{ 1687{
771 if (delay > 0.) 1688 if (delay > 0.)
772 { 1689 {
773#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
774 struct timespec ts; 1691 struct timespec ts;
775 1692
776 EV_TS_SET (ts, delay); 1693 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1695#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
780#else 1697#else
781 struct timeval tv; 1698 struct timeval tv;
782 1699
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1719
803 do 1720 do
804 ncur <<= 1; 1721 ncur <<= 1;
805 while (cnt > ncur); 1722 while (cnt > ncur);
806 1723
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1726 {
810 ncur *= elem; 1727 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1731 }
815 1732
816 return ncur; 1733 return ncur;
817} 1734}
818 1735
819static noinline void * 1736static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1738{
822 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
824} 1741}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1745
829#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
831 { \ 1748 { \
832 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1753 }
837 1754
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1773{
857} 1774}
858 1775
859void noinline 1776void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1778{
862 W w_ = (W)w; 1779 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
864 1781
865 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
873 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
874} 1793}
875 1794
876inline_speed void 1795inline_speed void
877feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
878{ 1797{
… …
924 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
926} 1845}
927 1846
928void 1847void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1849{
931 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
933} 1852}
934 1853
… …
937inline_size void 1856inline_size void
938fd_reify (EV_P) 1857fd_reify (EV_P)
939{ 1858{
940 int i; 1859 int i;
941 1860
1861#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1862 for (i = 0; i < fdchangecnt; ++i)
1863 {
1864 int fd = fdchanges [i];
1865 ANFD *anfd = anfds + fd;
1866
1867 if (anfd->reify & EV__IOFDSET && anfd->head)
1868 {
1869 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1870
1871 if (handle != anfd->handle)
1872 {
1873 unsigned long arg;
1874
1875 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1876
1877 /* handle changed, but fd didn't - we need to do it in two steps */
1878 backend_modify (EV_A_ fd, anfd->events, 0);
1879 anfd->events = 0;
1880 anfd->handle = handle;
1881 }
1882 }
1883 }
1884#endif
1885
942 for (i = 0; i < fdchangecnt; ++i) 1886 for (i = 0; i < fdchangecnt; ++i)
943 { 1887 {
944 int fd = fdchanges [i]; 1888 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1889 ANFD *anfd = anfds + fd;
946 ev_io *w; 1890 ev_io *w;
… …
948 unsigned char o_events = anfd->events; 1892 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 1893 unsigned char o_reify = anfd->reify;
950 1894
951 anfd->reify = 0; 1895 anfd->reify = 0;
952 1896
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 */ 1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 1898 {
964 anfd->events = 0; 1899 anfd->events = 0;
965 1900
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
991 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
992 } 1927 }
993} 1928}
994 1929
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 1931inline_speed void ecb_cold
997fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
998{ 1933{
999 ev_io *w; 1934 ev_io *w;
1000 1935
1001 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 1940 }
1006} 1941}
1007 1942
1008/* check whether the given fd is actually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 1944inline_size int ecb_cold
1010fd_valid (int fd) 1945fd_valid (int fd)
1011{ 1946{
1012#ifdef _WIN32 1947#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 1949#else
1015 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
1016#endif 1951#endif
1017} 1952}
1018 1953
1019/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
1020static void noinline 1955static void noinline ecb_cold
1021fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
1022{ 1957{
1023 int fd; 1958 int fd;
1024 1959
1025 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
1029} 1964}
1030 1965
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 1966/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 1967static void noinline ecb_cold
1033fd_enomem (EV_P) 1968fd_enomem (EV_P)
1034{ 1969{
1035 int fd; 1970 int fd;
1036 1971
1037 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
… …
1232 2167
1233/*****************************************************************************/ 2168/*****************************************************************************/
1234 2169
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2171
1237static void noinline 2172static void noinline ecb_cold
1238evpipe_init (EV_P) 2173evpipe_init (EV_P)
1239{ 2174{
1240 if (!ev_is_active (&pipe_w)) 2175 if (!ev_is_active (&pipe_w))
1241 { 2176 {
2177 int fds [2];
2178
1242# if EV_USE_EVENTFD 2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2182 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2183 fds [1] = eventfd (0, 0);
1246 2184
1247 if (evfd >= 0) 2185 if (fds [1] < 0)
2186# endif
1248 { 2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
1249 evpipe [0] = -1; 2194 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2195
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
2217inline_speed void
2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2219{
2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2221
2222 if (expect_true (*flag))
2223 return;
2224
2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
2241#if EV_USE_EVENTFD
2242 if (evpipe [0] < 0)
2243 {
2244 uint64_t counter = 1;
2245 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2246 }
1253 else 2247 else
1254# endif 2248#endif
1255 { 2249 {
1256 while (pipe (evpipe)) 2250#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1258 2252 DWORD sent;
1259 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1260 fd_intern (evpipe [1]); 2254 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else
2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1262 } 2259 }
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 2260
1294 errno = old_errno; 2261 errno = old_errno;
1295 } 2262 }
1296} 2263}
1297 2264
… …
1300static void 2267static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2269{
1303 int i; 2270 int i;
1304 2271
2272 if (revents & EV_READ)
2273 {
1305#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1307 { 2276 {
1308 uint64_t counter; 2277 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2279 }
1311 else 2280 else
1312#endif 2281#endif
1313 { 2282 {
1314 char dummy; 2283 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1316 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
2294 }
1317 } 2295 }
1318 2296
2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2300
2301#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2302 if (sig_pending)
1320 { 2303 {
1321 sig_pending = 0; 2304 sig_pending = 0;
2305
2306 ECB_MEMORY_FENCE;
1322 2307
1323 for (i = EV_NSIG - 1; i--; ) 2308 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2309 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2311 }
2312#endif
1327 2313
1328#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1329 if (async_pending) 2315 if (async_pending)
1330 { 2316 {
1331 async_pending = 0; 2317 async_pending = 0;
2318
2319 ECB_MEMORY_FENCE;
1332 2320
1333 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1335 { 2323 {
1336 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2327 }
1339 } 2328 }
1340#endif 2329#endif
1341} 2330}
1342 2331
1343/*****************************************************************************/ 2332/*****************************************************************************/
1344 2333
2334void
2335ev_feed_signal (int signum) EV_THROW
2336{
2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
2340 EV_A = signals [signum - 1].loop;
2341
2342 if (!EV_A)
2343 return;
2344#endif
2345
2346 signals [signum - 1].pending = 1;
2347 evpipe_write (EV_A_ &sig_pending);
2348}
2349
1345static void 2350static void
1346ev_sighandler (int signum) 2351ev_sighandler (int signum)
1347{ 2352{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2353#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2354 signal (signum, ev_sighandler);
1354#endif 2355#endif
1355 2356
1356 signals [signum - 1].pending = 1; 2357 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2358}
1359 2359
1360void noinline 2360void noinline
1361ev_feed_signal_event (EV_P_ int signum) 2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
1362{ 2362{
1363 WL w; 2363 WL w;
1364 2364
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2366 return;
1367 2367
1368 --signum; 2368 --signum;
1369 2369
1370#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
… …
1374 if (expect_false (signals [signum].loop != EV_A)) 2374 if (expect_false (signals [signum].loop != EV_A))
1375 return; 2375 return;
1376#endif 2376#endif
1377 2377
1378 signals [signum].pending = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1379 2380
1380 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2383}
1383 2384
… …
1462 2463
1463#endif 2464#endif
1464 2465
1465/*****************************************************************************/ 2466/*****************************************************************************/
1466 2467
2468#if EV_USE_IOCP
2469# include "ev_iocp.c"
2470#endif
1467#if EV_USE_PORT 2471#if EV_USE_PORT
1468# include "ev_port.c" 2472# include "ev_port.c"
1469#endif 2473#endif
1470#if EV_USE_KQUEUE 2474#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2475# include "ev_kqueue.c"
… …
1478#endif 2482#endif
1479#if EV_USE_SELECT 2483#if EV_USE_SELECT
1480# include "ev_select.c" 2484# include "ev_select.c"
1481#endif 2485#endif
1482 2486
1483int 2487int ecb_cold
1484ev_version_major (void) 2488ev_version_major (void) EV_THROW
1485{ 2489{
1486 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1487} 2491}
1488 2492
1489int 2493int ecb_cold
1490ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1491{ 2495{
1492 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1493} 2497}
1494 2498
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2500int inline_size ecb_cold
1497enable_secure (void) 2501enable_secure (void)
1498{ 2502{
1499#ifdef _WIN32 2503#ifdef _WIN32
1500 return 0; 2504 return 0;
1501#else 2505#else
1502 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2507 || getgid () != getegid ();
1504#endif 2508#endif
1505} 2509}
1506 2510
1507unsigned int 2511unsigned int ecb_cold
1508ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1509{ 2513{
1510 unsigned int flags = 0; 2514 unsigned int flags = 0;
1511 2515
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1517 2521
1518 return flags; 2522 return flags;
1519} 2523}
1520 2524
1521unsigned int 2525unsigned int ecb_cold
1522ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1523{ 2527{
1524 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1525 2529
1526#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1538#endif 2542#endif
1539 2543
1540 return flags; 2544 return flags;
1541} 2545}
1542 2546
2547unsigned int ecb_cold
2548ev_embeddable_backends (void) EV_THROW
2549{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2551
2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2554 flags &= ~EVBACKEND_EPOLL;
2555
2556 return flags;
2557}
2558
1543unsigned int 2559unsigned 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) 2560ev_backend (EV_P) EV_THROW
1557{ 2561{
1558 return backend; 2562 return backend;
1559} 2563}
1560 2564
1561#if EV_FEATURE_API 2565#if EV_FEATURE_API
1562unsigned int 2566unsigned int
1563ev_iteration (EV_P) 2567ev_iteration (EV_P) EV_THROW
1564{ 2568{
1565 return loop_count; 2569 return loop_count;
1566} 2570}
1567 2571
1568unsigned int 2572unsigned int
1569ev_depth (EV_P) 2573ev_depth (EV_P) EV_THROW
1570{ 2574{
1571 return loop_depth; 2575 return loop_depth;
1572} 2576}
1573 2577
1574void 2578void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1576{ 2580{
1577 io_blocktime = interval; 2581 io_blocktime = interval;
1578} 2582}
1579 2583
1580void 2584void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1582{ 2586{
1583 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1584} 2588}
1585 2589
1586void 2590void
1587ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
1588{ 2592{
1589 userdata = data; 2593 userdata = data;
1590} 2594}
1591 2595
1592void * 2596void *
1593ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
1594{ 2598{
1595 return userdata; 2599 return userdata;
1596} 2600}
1597 2601
2602void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1599{ 2604{
1600 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
1601} 2606}
1602 2607
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1604{ 2610{
1605 release_cb = release; 2611 release_cb = release;
1606 acquire_cb = acquire; 2612 acquire_cb = acquire;
1607} 2613}
1608#endif 2614#endif
1609 2615
1610/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1611static void noinline 2617static void noinline ecb_cold
1612loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1613{ 2619{
1614 if (!backend) 2620 if (!backend)
1615 { 2621 {
2622 origflags = flags;
2623
1616#if EV_USE_REALTIME 2624#if EV_USE_REALTIME
1617 if (!have_realtime) 2625 if (!have_realtime)
1618 { 2626 {
1619 struct timespec ts; 2627 struct timespec ts;
1620 2628
… …
1642 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 2651 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 2654
1647 ev_rt_now = ev_time (); 2655 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 2656 mn_now = get_clock ();
1649 now_floor = mn_now; 2657 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 2658 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 2659#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 2660 invoke_cb = ev_invoke_pending;
1653#endif 2661#endif
1654 2662
1655 io_blocktime = 0.; 2663 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 2664 timeout_blocktime = 0.;
1657 backend = 0; 2665 backend = 0;
1658 backend_fd = -1; 2666 backend_fd = -1;
1659 sig_pending = 0; 2667 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 2668#if EV_ASYNC_ENABLE
1661 async_pending = 0; 2669 async_pending = 0;
1662#endif 2670#endif
2671 pipe_write_skipped = 0;
2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 2675#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 2677#endif
1666#if EV_USE_SIGNALFD 2678#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 2680#endif
1669 2681
1670 if (!(flags & 0x0000ffffU)) 2682 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1672 2684
2685#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif
1673#if EV_USE_PORT 2688#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 2690#endif
1676#if EV_USE_KQUEUE 2691#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1694#endif 2709#endif
1695 } 2710 }
1696} 2711}
1697 2712
1698/* free up a loop structure */ 2713/* free up a loop structure */
1699static void noinline 2714void ecb_cold
1700loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1701{ 2716{
1702 int i; 2717 int i;
2718
2719#if EV_MULTIPLICITY
2720 /* mimic free (0) */
2721 if (!EV_A)
2722 return;
2723#endif
2724
2725#if EV_CLEANUP_ENABLE
2726 /* queue cleanup watchers (and execute them) */
2727 if (expect_false (cleanupcnt))
2728 {
2729 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2730 EV_INVOKE_PENDING;
2731 }
2732#endif
2733
2734#if EV_CHILD_ENABLE
2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2736 {
2737 ev_ref (EV_A); /* child watcher */
2738 ev_signal_stop (EV_A_ &childev);
2739 }
2740#endif
1703 2741
1704 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1705 { 2743 {
1706 /*ev_ref (EV_A);*/ 2744 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 2746
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]); 2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 2749 }
1720 2750
1721#if EV_USE_SIGNALFD 2751#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 2752 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 2753 close (sigfd);
… …
1729#endif 2759#endif
1730 2760
1731 if (backend_fd >= 0) 2761 if (backend_fd >= 0)
1732 close (backend_fd); 2762 close (backend_fd);
1733 2763
2764#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif
1734#if EV_USE_PORT 2767#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 2769#endif
1737#if EV_USE_KQUEUE 2770#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1765 array_free (periodic, EMPTY); 2798 array_free (periodic, EMPTY);
1766#endif 2799#endif
1767#if EV_FORK_ENABLE 2800#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 2801 array_free (fork, EMPTY);
1769#endif 2802#endif
2803#if EV_CLEANUP_ENABLE
2804 array_free (cleanup, EMPTY);
2805#endif
1770 array_free (prepare, EMPTY); 2806 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 2807 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 2808#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 2809 array_free (async, EMPTY);
1774#endif 2810#endif
1775 2811
1776 backend = 0; 2812 backend = 0;
2813
2814#if EV_MULTIPLICITY
2815 if (ev_is_default_loop (EV_A))
2816#endif
2817 ev_default_loop_ptr = 0;
2818#if EV_MULTIPLICITY
2819 else
2820 ev_free (EV_A);
2821#endif
1777} 2822}
1778 2823
1779#if EV_USE_INOTIFY 2824#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 2825inline_size void infy_fork (EV_P);
1781#endif 2826#endif
… …
1794#endif 2839#endif
1795#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 2841 infy_fork (EV_A);
1797#endif 2842#endif
1798 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1800 { 2846 {
1801 /* this "locks" the handlers against writing to the pipe */ 2847 /* 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 2848
1808 ev_ref (EV_A); 2849 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1810 2851
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1820 }
1821 2854
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1825 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1826#endif
1827 } 2858 }
2859#endif
1828 2860
1829 postfork = 0; 2861 postfork = 0;
1830} 2862}
1831 2863
1832#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1833 2865
1834struct ev_loop * 2866struct ev_loop * ecb_cold
1835ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
1836{ 2868{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 2870
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
1841 2873
1842 if (ev_backend (EV_A)) 2874 if (ev_backend (EV_A))
1843 return EV_A; 2875 return EV_A;
1844 2876
2877 ev_free (EV_A);
1845 return 0; 2878 return 0;
1846} 2879}
1847 2880
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 */ 2881#endif /* multiplicity */
1861 2882
1862#if EV_VERIFY 2883#if EV_VERIFY
1863static void noinline 2884static void noinline ecb_cold
1864verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
1865{ 2886{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 2888
1868 if (w->pending) 2889 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 2891}
1871 2892
1872static void noinline 2893static void noinline ecb_cold
1873verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
1874{ 2895{
1875 int i; 2896 int i;
1876 2897
1877 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 2903
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 2905 }
1885} 2906}
1886 2907
1887static void noinline 2908static void noinline ecb_cold
1888array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
1889{ 2910{
1890 while (cnt--) 2911 while (cnt--)
1891 { 2912 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 2915 }
1895} 2916}
1896#endif 2917#endif
1897 2918
1898#if EV_FEATURE_API 2919#if EV_FEATURE_API
1899void 2920void ecb_cold
1900ev_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
1901{ 2922{
1902#if EV_VERIFY 2923#if EV_VERIFY
1903 int i; 2924 int i;
1904 WL w; 2925 WL w, w2;
1905 2926
1906 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
1907 2928
1908 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 2932
1912 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
1914 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 2939 {
1916 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 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)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 2950 }
2951 }
1920 2952
1921 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
1923 2955
1924#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 2971#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 2972 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 2973 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 2974#endif
1943 2975
2976#if EV_CLEANUP_ENABLE
2977 assert (cleanupmax >= cleanupcnt);
2978 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2979#endif
2980
1944#if EV_ASYNC_ENABLE 2981#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 2982 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 2983 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 2984#endif
1948 2985
… …
1965#endif 3002#endif
1966} 3003}
1967#endif 3004#endif
1968 3005
1969#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
1970struct ev_loop * 3007struct ev_loop * ecb_cold
1971ev_default_loop_init (unsigned int flags)
1972#else 3008#else
1973int 3009int
3010#endif
1974ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
1975#endif
1976{ 3012{
1977 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
1978 { 3014 {
1979#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 3035
2000 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
2001} 3037}
2002 3038
2003void 3039void
2004ev_default_destroy (void) 3040ev_loop_fork (EV_P) EV_THROW
2005{ 3041{
2006#if EV_MULTIPLICITY 3042 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} 3043}
2029 3044
2030/*****************************************************************************/ 3045/*****************************************************************************/
2031 3046
2032void 3047void
… …
2034{ 3049{
2035 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
2036} 3051}
2037 3052
2038unsigned int 3053unsigned int
2039ev_pending_count (EV_P) 3054ev_pending_count (EV_P) EV_THROW
2040{ 3055{
2041 int pri; 3056 int pri;
2042 unsigned int count = 0; 3057 unsigned int count = 0;
2043 3058
2044 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
… …
2048} 3063}
2049 3064
2050void noinline 3065void noinline
2051ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
2052{ 3067{
2053 int pri; 3068 pendingpri = NUMPRI;
2054 3069
2055 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
2056 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
2057 { 3075 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3077
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; 3078 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
2066 } 3081 }
3082 }
2067} 3083}
2068 3084
2069#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3144 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3145 }
2130} 3146}
2131 3147
2132#if EV_PERIODIC_ENABLE 3148#if EV_PERIODIC_ENABLE
3149
3150static void noinline
3151periodic_recalc (EV_P_ ev_periodic *w)
3152{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3155
3156 /* the above almost always errs on the low side */
3157 while (at <= ev_rt_now)
3158 {
3159 ev_tstamp nat = at + w->interval;
3160
3161 /* when resolution fails us, we use ev_rt_now */
3162 if (expect_false (nat == at))
3163 {
3164 at = ev_rt_now;
3165 break;
3166 }
3167
3168 at = nat;
3169 }
3170
3171 ev_at (w) = at;
3172}
3173
2133/* make periodics pending */ 3174/* make periodics pending */
2134inline_size void 3175inline_size void
2135periodics_reify (EV_P) 3176periodics_reify (EV_P)
2136{ 3177{
2137 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2138 3179
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3181 {
2141 int feed_count = 0;
2142
2143 do 3182 do
2144 { 3183 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3185
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3195 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3196 downheap (periodics, periodiccnt, HEAP0);
2158 } 3197 }
2159 else if (w->interval) 3198 else if (w->interval)
2160 { 3199 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3200 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]); 3201 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3202 downheap (periodics, periodiccnt, HEAP0);
2177 } 3203 }
2178 else 3204 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3205 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3213 }
2188} 3214}
2189 3215
2190/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3217/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3218static void noinline ecb_cold
2193periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
2194{ 3220{
2195 int i; 3221 int i;
2196 3222
2197 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3226 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3227
2202 if (w->reschedule_cb) 3228 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3229 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3230 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3231 periodic_recalc (EV_A_ w);
2206 3232
2207 ANHE_at_cache (periodics [i]); 3233 ANHE_at_cache (periodics [i]);
2208 } 3234 }
2209 3235
2210 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
2211} 3237}
2212#endif 3238#endif
2213 3239
2214/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
2215static void noinline 3241static void noinline ecb_cold
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3243{
2218 int i; 3244 int i;
2219 3245
2220 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3283 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3284 * in the unlikely event of having been preempted here.
2259 */ 3285 */
2260 for (i = 4; --i; ) 3286 for (i = 4; --i; )
2261 { 3287 {
3288 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3289 rtmn_diff = ev_rt_now - mn_now;
2263 3290
3291 diff = odiff - rtmn_diff;
3292
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265 return; /* all is well */ 3294 return; /* all is well */
2266 3295
2267 ev_rt_now = ev_time (); 3296 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3297 mn_now = get_clock ();
2269 now_floor = mn_now; 3298 now_floor = mn_now;
… …
2291 3320
2292 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2293 } 3322 }
2294} 3323}
2295 3324
2296void 3325int
2297ev_loop (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2298{ 3327{
2299#if EV_FEATURE_API 3328#if EV_FEATURE_API
2300 ++loop_depth; 3329 ++loop_depth;
2301#endif 3330#endif
2302 3331
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3332 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 3333
2305 loop_done = EVUNLOOP_CANCEL; 3334 loop_done = EVBREAK_CANCEL;
2306 3335
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3336 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 3337
2309 do 3338 do
2310 { 3339 {
… …
2353 /* calculate blocking time */ 3382 /* calculate blocking time */
2354 { 3383 {
2355 ev_tstamp waittime = 0.; 3384 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 3385 ev_tstamp sleeptime = 0.;
2357 3386
3387 /* remember old timestamp for io_blocktime calculation */
3388 ev_tstamp prev_mn_now = mn_now;
3389
3390 /* update time to cancel out callback processing overhead */
3391 time_update (EV_A_ 1e100);
3392
3393 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1;
3395
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2359 { 3399 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
2363 /* update time to cancel out callback processing overhead */
2364 time_update (EV_A_ 1e100);
2365
2366 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2367 3401
2368 if (timercnt) 3402 if (timercnt)
2369 { 3403 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2372 } 3406 }
2373 3407
2374#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3409 if (periodiccnt)
2376 { 3410 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2379 } 3413 }
2380#endif 3414#endif
2381 3415
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3418 waittime = timeout_blocktime;
3419
3420 /* at this point, we NEED to wait, so we have to ensure */
3421 /* to pass a minimum nonzero value to the backend */
3422 if (expect_false (waittime < backend_mintime))
3423 waittime = backend_mintime;
2385 3424
2386 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2388 { 3427 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 3429
2391 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2393 3432
2394 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2395 { 3434 {
2396 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 3436 waittime -= sleeptime;
… …
2400 } 3439 }
2401 3440
2402#if EV_FEATURE_API 3441#if EV_FEATURE_API
2403 ++loop_count; 3442 ++loop_count;
2404#endif 3443#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3447
3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
3451 if (pipe_write_skipped)
3452 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 }
3456
2408 3457
2409 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2411 } 3460 }
2412 3461
… …
2430 EV_INVOKE_PENDING; 3479 EV_INVOKE_PENDING;
2431 } 3480 }
2432 while (expect_true ( 3481 while (expect_true (
2433 activecnt 3482 activecnt
2434 && !loop_done 3483 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 3485 ));
2437 3486
2438 if (loop_done == EVUNLOOP_ONE) 3487 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
2440 3489
2441#if EV_FEATURE_API 3490#if EV_FEATURE_API
2442 --loop_depth; 3491 --loop_depth;
2443#endif 3492#endif
3493
3494 return activecnt;
2444} 3495}
2445 3496
2446void 3497void
2447ev_unloop (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2448{ 3499{
2449 loop_done = how; 3500 loop_done = how;
2450} 3501}
2451 3502
2452void 3503void
2453ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2454{ 3505{
2455 ++activecnt; 3506 ++activecnt;
2456} 3507}
2457 3508
2458void 3509void
2459ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2460{ 3511{
2461 --activecnt; 3512 --activecnt;
2462} 3513}
2463 3514
2464void 3515void
2465ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2466{ 3517{
2467 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2468} 3519}
2469 3520
2470void 3521void
2471ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2472{ 3523{
2473 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2474} 3525}
2475 3526
2476void 3527void
2477ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2478{ 3529{
2479 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2480 3531
2481 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2521 w->pending = 0; 3572 w->pending = 0;
2522 } 3573 }
2523} 3574}
2524 3575
2525int 3576int
2526ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2527{ 3578{
2528 W w_ = (W)w; 3579 W w_ = (W)w;
2529 int pending = w_->pending; 3580 int pending = w_->pending;
2530 3581
2531 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2564} 3615}
2565 3616
2566/*****************************************************************************/ 3617/*****************************************************************************/
2567 3618
2568void noinline 3619void noinline
2569ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2570{ 3621{
2571 int fd = w->fd; 3622 int fd = w->fd;
2572 3623
2573 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2574 return; 3625 return;
… …
2580 3631
2581 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2583 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2584 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2587 3641
2588 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2589} 3643}
2590 3644
2591void noinline 3645void noinline
2592ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2593{ 3647{
2594 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2596 return; 3650 return;
2597 3651
… …
2606 3660
2607 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2608} 3662}
2609 3663
2610void noinline 3664void noinline
2611ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2612{ 3666{
2613 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2614 return; 3668 return;
2615 3669
2616 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2630 3684
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 3686}
2633 3687
2634void noinline 3688void noinline
2635ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2636{ 3690{
2637 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2639 return; 3693 return;
2640 3694
… …
2660 3714
2661 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
2662} 3716}
2663 3717
2664void noinline 3718void noinline
2665ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2666{ 3720{
2667 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2668 3724
2669 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2670 { 3726 {
2671 if (w->repeat) 3727 if (w->repeat)
2672 { 3728 {
… …
2685 3741
2686 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2687} 3743}
2688 3744
2689ev_tstamp 3745ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2691{ 3747{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693} 3749}
2694 3750
2695#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2696void noinline 3752void noinline
2697ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2698{ 3754{
2699 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2700 return; 3756 return;
2701 3757
2702 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 3760 else if (w->interval)
2705 { 3761 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3762 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 */ 3763 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 3764 }
2710 else 3765 else
2711 ev_at (w) = w->offset; 3766 ev_at (w) = w->offset;
2712 3767
2713 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
… …
2723 3778
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 3780}
2726 3781
2727void noinline 3782void noinline
2728ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2729{ 3784{
2730 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2732 return; 3787 return;
2733 3788
… …
2751 3806
2752 EV_FREQUENT_CHECK; 3807 EV_FREQUENT_CHECK;
2753} 3808}
2754 3809
2755void noinline 3810void noinline
2756ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2757{ 3812{
2758 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2761} 3816}
… …
2766#endif 3821#endif
2767 3822
2768#if EV_SIGNAL_ENABLE 3823#if EV_SIGNAL_ENABLE
2769 3824
2770void noinline 3825void noinline
2771ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2772{ 3827{
2773 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2774 return; 3829 return;
2775 3830
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2778#if EV_MULTIPLICITY 3833#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 3834 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 3836
2782 signals [w->signum - 1].loop = EV_A; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
2783#endif 3839#endif
2784 3840
2785 EV_FREQUENT_CHECK; 3841 EV_FREQUENT_CHECK;
2786 3842
2787#if EV_USE_SIGNALFD 3843#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 3890 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 3891 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 3893 sigaction (w->signum, &sa, 0);
2838 3894
3895 if (origflags & EVFLAG_NOSIGMASK)
3896 {
2839 sigemptyset (&sa.sa_mask); 3897 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 3898 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3900 }
2842#endif 3901#endif
2843 } 3902 }
2844 3903
2845 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2846} 3905}
2847 3906
2848void noinline 3907void noinline
2849ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2850{ 3909{
2851 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
2853 return; 3912 return;
2854 3913
… …
2885#endif 3944#endif
2886 3945
2887#if EV_CHILD_ENABLE 3946#if EV_CHILD_ENABLE
2888 3947
2889void 3948void
2890ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
2891{ 3950{
2892#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 3953#endif
2895 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
… …
2902 3961
2903 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2904} 3963}
2905 3964
2906void 3965void
2907ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
2908{ 3967{
2909 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
2911 return; 3970 return;
2912 3971
… …
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 3999
2941static void noinline 4000static void noinline
2942infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
2943{ 4002{
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); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 4007
2946 if (w->wd >= 0) 4008 if (w->wd >= 0)
2947 { 4009 {
2948 struct statfs sfs; 4010 struct statfs sfs;
2949 4011
… …
2953 4015
2954 if (!fs_2625) 4016 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 4018 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 4028 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 4029 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 4030 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 4032 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 4034 }
… …
2987 if (!pend || pend == path) 4055 if (!pend || pend == path)
2988 break; 4056 break;
2989 4057
2990 *pend = 0; 4058 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4059 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4060 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4061 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4062 }
2995 } 4063 }
2996 4064
2997 if (w->wd >= 0) 4065 if (w->wd >= 0)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4132 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4133 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4134 }
3067} 4135}
3068 4136
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 4137inline_size void ecb_cold
3102ev_check_2625 (EV_P) 4138ev_check_2625 (EV_P)
3103{ 4139{
3104 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4142 */
… …
3111} 4147}
3112 4148
3113inline_size int 4149inline_size int
3114infy_newfd (void) 4150infy_newfd (void)
3115{ 4151{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4154 if (fd >= 0)
3119 return fd; 4155 return fd;
3120#endif 4156#endif
3121 return inotify_init (); 4157 return inotify_init ();
… …
3196#else 4232#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4234#endif
3199 4235
3200void 4236void
3201ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3202{ 4238{
3203 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4282 }
3247} 4283}
3248 4284
3249void 4285void
3250ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3251{ 4287{
3252 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
3253 return; 4289 return;
3254 4290
3255 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
3276 4312
3277 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3278} 4314}
3279 4315
3280void 4316void
3281ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3282{ 4318{
3283 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
3285 return; 4321 return;
3286 4322
… …
3302} 4338}
3303#endif 4339#endif
3304 4340
3305#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
3306void 4342void
3307ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3308{ 4344{
3309 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3310 return; 4346 return;
3311 4347
3312 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
3325 4361
3326 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3327} 4363}
3328 4364
3329void 4365void
3330ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3331{ 4367{
3332 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
3334 return; 4370 return;
3335 4371
… …
3349} 4385}
3350#endif 4386#endif
3351 4387
3352#if EV_PREPARE_ENABLE 4388#if EV_PREPARE_ENABLE
3353void 4389void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3355{ 4391{
3356 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3357 return; 4393 return;
3358 4394
3359 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3364 4400
3365 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3366} 4402}
3367 4403
3368void 4404void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3370{ 4406{
3371 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3373 return; 4409 return;
3374 4410
… …
3387} 4423}
3388#endif 4424#endif
3389 4425
3390#if EV_CHECK_ENABLE 4426#if EV_CHECK_ENABLE
3391void 4427void
3392ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3393{ 4429{
3394 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3395 return; 4431 return;
3396 4432
3397 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3402 4438
3403 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3404} 4440}
3405 4441
3406void 4442void
3407ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3408{ 4444{
3409 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3411 return; 4447 return;
3412 4448
… …
3425} 4461}
3426#endif 4462#endif
3427 4463
3428#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3429void noinline 4465void noinline
3430ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3431{ 4467{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 4468 ev_run (w->other, EVRUN_NOWAIT);
3433} 4469}
3434 4470
3435static void 4471static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 4472embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 4473{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4474 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 4475
3440 if (ev_cb (w)) 4476 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4477 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 4478 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 4479 ev_run (w->other, EVRUN_NOWAIT);
3444} 4480}
3445 4481
3446static void 4482static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4483embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 4484{
… …
3452 EV_P = w->other; 4488 EV_P = w->other;
3453 4489
3454 while (fdchangecnt) 4490 while (fdchangecnt)
3455 { 4491 {
3456 fd_reify (EV_A); 4492 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4493 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 4494 }
3459 } 4495 }
3460} 4496}
3461 4497
3462static void 4498static void
… …
3468 4504
3469 { 4505 {
3470 EV_P = w->other; 4506 EV_P = w->other;
3471 4507
3472 ev_loop_fork (EV_A); 4508 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4509 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 4510 }
3475 4511
3476 ev_embed_start (EV_A_ w); 4512 ev_embed_start (EV_A_ w);
3477} 4513}
3478 4514
… …
3483 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3484} 4520}
3485#endif 4521#endif
3486 4522
3487void 4523void
3488ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3489{ 4525{
3490 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3491 return; 4527 return;
3492 4528
3493 { 4529 {
… …
3514 4550
3515 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3516} 4552}
3517 4553
3518void 4554void
3519ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3520{ 4556{
3521 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3523 return; 4559 return;
3524 4560
… …
3534} 4570}
3535#endif 4571#endif
3536 4572
3537#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3538void 4574void
3539ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3540{ 4576{
3541 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3542 return; 4578 return;
3543 4579
3544 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3549 4585
3550 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3551} 4587}
3552 4588
3553void 4589void
3554ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3555{ 4591{
3556 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3558 return; 4594 return;
3559 4595
… …
3570 4606
3571 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3572} 4608}
3573#endif 4609#endif
3574 4610
4611#if EV_CLEANUP_ENABLE
4612void
4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4614{
4615 if (expect_false (ev_is_active (w)))
4616 return;
4617
4618 EV_FREQUENT_CHECK;
4619
4620 ev_start (EV_A_ (W)w, ++cleanupcnt);
4621 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4622 cleanups [cleanupcnt - 1] = w;
4623
4624 /* cleanup watchers should never keep a refcount on the loop */
4625 ev_unref (EV_A);
4626 EV_FREQUENT_CHECK;
4627}
4628
4629void
4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4631{
4632 clear_pending (EV_A_ (W)w);
4633 if (expect_false (!ev_is_active (w)))
4634 return;
4635
4636 EV_FREQUENT_CHECK;
4637 ev_ref (EV_A);
4638
4639 {
4640 int active = ev_active (w);
4641
4642 cleanups [active - 1] = cleanups [--cleanupcnt];
4643 ev_active (cleanups [active - 1]) = active;
4644 }
4645
4646 ev_stop (EV_A_ (W)w);
4647
4648 EV_FREQUENT_CHECK;
4649}
4650#endif
4651
3575#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3576void 4653void
3577ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3578{ 4655{
3579 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3580 return; 4657 return;
3581 4658
3582 w->sent = 0; 4659 w->sent = 0;
… …
3591 4668
3592 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3593} 4670}
3594 4671
3595void 4672void
3596ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3597{ 4674{
3598 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3600 return; 4677 return;
3601 4678
… …
3612 4689
3613 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3614} 4691}
3615 4692
3616void 4693void
3617ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3618{ 4695{
3619 w->sent = 1; 4696 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 4697 evpipe_write (EV_A_ &async_pending);
3621} 4698}
3622#endif 4699#endif
… …
3659 4736
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 4738}
3662 4739
3663void 4740void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3665{ 4742{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3667 4744
3668 if (expect_false (!once)) 4745 if (expect_false (!once))
3669 { 4746 {
… …
3690} 4767}
3691 4768
3692/*****************************************************************************/ 4769/*****************************************************************************/
3693 4770
3694#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3695void 4772void ecb_cold
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3697{ 4774{
3698 int i, j; 4775 int i, j;
3699 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3700 4777
3701 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 4822#endif
3746 4823
3747#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 4829#endif
3753 4830
3754#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3807 4884
3808#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3810#endif 4887#endif
3811 4888
3812#ifdef __cplusplus
3813}
3814#endif
3815

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