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Comparing libev/ev.c (file contents):
Revision 1.347 by root, Fri Oct 15 22:44:41 2010 UTC vs.
Revision 1.470 by root, Sun Sep 7 13:44:21 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
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
247#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 273# else
251# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
252# endif 275# endif
253#endif 276#endif
… …
340 363
341#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 366#endif
344 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* 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. */ 385/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 387# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
353# else 392# else
… …
356# endif 395# endif
357#endif 396#endif
358 397
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 399
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 400#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
370#endif 403#endif
371 404
… …
378# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
380#endif 413#endif
381 414
382#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 418# include <sys/select.h>
385# endif 419# endif
386#endif 420#endif
387 421
388#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 423# include <sys/statfs.h>
391# include <sys/inotify.h> 424# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
396# endif 429# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 430#endif
402 431
403#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 434# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
412# else 441# else
413# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
414# endif 443# endif
415# endif 444# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 446#endif
424 447
425#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 450# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
434# else 457# else
435# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
436# endif 459# endif
437# endif 460# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 462
443struct signalfd_siginfo 463struct signalfd_siginfo
444{ 464{
445 uint32_t ssi_signo; 465 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
447}; 467};
448# ifdef __cplusplus
449}
450# endif
451#endif 468#endif
452 469
453/**/ 470/**/
454 471
455#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
… …
457#else 474#else
458# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
459#endif 476#endif
460 477
461/* 478/*
462 * This is used to avoid floating point rounding problems. 479 * 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. 480 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 481 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 484
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#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) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 487
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; tv.tv_nsec = (long)((t - tv.tv_sec) * 1e9); } while (0) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 546 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
480#else 562#else
481# define expect(expr,value) (expr) 563 #include <inttypes.h>
482# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
484# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
485# endif 569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
486#endif 577 #endif
578#endif
487 579
580/* many compilers define _GNUC_ to some versions but then only implement
581 * what their idiot authors think are the "more important" extensions,
582 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place.
586 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0
590 #else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif
593#endif
594
595#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L)
597
598#if ECB_CPP
599 #define ECB_C 0
600 #define ECB_STDC_VERSION 0
601#else
602 #define ECB_C 1
603 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif
605
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
608
609#if ECB_CPP
610 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END }
613#else
614 #define ECB_EXTERN_C extern
615 #define ECB_EXTERN_C_BEG
616 #define ECB_EXTERN_C_END
617#endif
618
619/*****************************************************************************/
620
621/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
622/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
623
624#if ECB_NO_THREADS
625 #define ECB_NO_SMP 1
626#endif
627
628#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0)
630#endif
631
632#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
658 #elif defined __mips__
659 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
660 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
662 #elif defined __alpha__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
664 #elif defined __hppa__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
667 #elif defined __ia64__
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
669 #elif defined __m68k__
670 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
671 #elif defined __m88k__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
673 #elif defined __sh__
674 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
675 #endif
676 #endif
677#endif
678
679#ifndef ECB_MEMORY_FENCE
680 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model.
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
701 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
702 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
703 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
704 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
705 #elif _MSC_VER >= 1400 /* VC++ 2005 */
706 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
707 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
708 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
709 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
710 #elif defined _WIN32
711 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
718 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync ()
720 #endif
721#endif
722
723#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
737 #endif
738#endif
739
740#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS
742 /*
743 * if you get undefined symbol references to pthread_mutex_lock,
744 * or failure to find pthread.h, then you should implement
745 * the ECB_MEMORY_FENCE operations for your cpu/compiler
746 * OR provide pthread.h and link against the posix thread library
747 * of your system.
748 */
749 #include <pthread.h>
750 #define ECB_NEEDS_PTHREADS 1
751 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
752
753 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
754 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
755 #endif
756#endif
757
758#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
759 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
760#endif
761
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif
765
766/*****************************************************************************/
767
768#if __cplusplus
769 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__
772#elif ECB_C99
773 #define ecb_inline static inline
774#else
775 #define ecb_inline static
776#endif
777
778#if ECB_GCC_VERSION(3,3)
779 #define ecb_restrict __restrict__
780#elif ECB_C99
781 #define ecb_restrict restrict
782#else
783 #define ecb_restrict
784#endif
785
786typedef int ecb_bool;
787
788#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
792
793#define ecb_function_ ecb_inline
794
795#if ECB_GCC_VERSION(3,1)
796 #define ecb_attribute(attrlist) __attribute__(attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else
801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806
807 #define ecb_is_constant(expr) 0
808 #define ecb_expect(expr,value) (expr)
809 #define ecb_prefetch(addr,rw,locality)
810#endif
811
812/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5)
814 #define ecb_decltype(x) __decltype(x)
815#elif ECB_GCC_VERSION(3,0)
816 #define ecb_decltype(x) __typeof(x)
817#endif
818
819#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated)
821#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif
824
825#define ecb_noinline ecb_attribute ((__noinline__))
826#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__))
829
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
831#if ECB_C11
832 #define ecb_noreturn _Noreturn
833#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif
836
837#if ECB_GCC_VERSION(4,3)
838 #define ecb_artificial ecb_attribute ((__artificial__))
839 #define ecb_hot ecb_attribute ((__hot__))
840 #define ecb_cold ecb_attribute ((__cold__))
841#else
842 #define ecb_artificial
843 #define ecb_hot
844 #define ecb_cold
845#endif
846
847/* put around conditional expressions if you are very sure that the */
848/* expression is mostly true or mostly false. note that these return */
849/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 850#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 851#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
852/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr)
855
856/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4)
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */
865#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
867 ecb_function_ int
868 ecb_ctz32 (uint32_t x)
869 {
870 int r = 0;
871
872 x &= ~x + 1; /* this isolates the lowest bit */
873
874#if ECB_branchless_on_i386
875 r += !!(x & 0xaaaaaaaa) << 0;
876 r += !!(x & 0xcccccccc) << 1;
877 r += !!(x & 0xf0f0f0f0) << 2;
878 r += !!(x & 0xff00ff00) << 3;
879 r += !!(x & 0xffff0000) << 4;
880#else
881 if (x & 0xaaaaaaaa) r += 1;
882 if (x & 0xcccccccc) r += 2;
883 if (x & 0xf0f0f0f0) r += 4;
884 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16;
886#endif
887
888 return r;
889 }
890
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
892 ecb_function_ int
893 ecb_ctz64 (uint64_t x)
894 {
895 int shift = x & 0xffffffffU ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift;
897 }
898
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
900 ecb_function_ int
901 ecb_popcount32 (uint32_t x)
902 {
903 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101;
907
908 return x >> 24;
909 }
910
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
912 ecb_function_ int ecb_ld32 (uint32_t x)
913 {
914 int r = 0;
915
916 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; }
921
922 return r;
923 }
924
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
926 ecb_function_ int ecb_ld64 (uint64_t x)
927 {
928 int r = 0;
929
930 if (x >> 32) { x >>= 32; r += 32; }
931
932 return r + ecb_ld32 (x);
933 }
934#endif
935
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
943{
944 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946}
947
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
950{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8);
955
956 return x;
957}
958
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
961{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
966 x = ( x >> 16 ) | ( x << 16);
967
968 return x;
969}
970
971/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
974ecb_function_ int
975ecb_popcount64 (uint64_t x)
976{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978}
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
988
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997
998#if ECB_GCC_VERSION(4,3)
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1000 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x)
1002#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
1004 ecb_function_ uint16_t
1005 ecb_bswap16 (uint16_t x)
1006 {
1007 return ecb_rotl16 (x, 8);
1008 }
1009
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1011 ecb_function_ uint32_t
1012 ecb_bswap32 (uint32_t x)
1013 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 }
1016
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1018 ecb_function_ uint64_t
1019 ecb_bswap64 (uint64_t x)
1020 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 }
1023#endif
1024
1025#if ECB_GCC_VERSION(4,5)
1026 #define ecb_unreachable() __builtin_unreachable ()
1027#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1030 ecb_inline void ecb_unreachable (void) { }
1031#endif
1032
1033/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1037ecb_inline unsigned char
1038ecb_byteorder_helper (void)
1039{
1040 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1049 return 0x44;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1051 return 0x11;
1052#else
1053 union
1054 {
1055 uint32_t i;
1056 uint8_t c;
1057 } u = { 0x11223344 };
1058 return u.c;
1059#endif
1060}
1061
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1066
1067#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif
1072
1073#if __cplusplus
1074 template<typename T>
1075 static inline T ecb_div_rd (T val, T div)
1076 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 }
1079 template<typename T>
1080 static inline T ecb_div_ru (T val, T div)
1081 {
1082 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1083 }
1084#else
1085 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1086 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1087#endif
1088
1089#if ecb_cplusplus_does_not_suck
1090 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1091 template<typename T, int N>
1092 static inline int ecb_array_length (const T (&arr)[N])
1093 {
1094 return N;
1095 }
1096#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif
1099
1100/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102
1103/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \
1106 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \
1111 || defined __alpha__ \
1112 || defined __hppa__ \
1113 || defined __ia64__ \
1114 || defined __m68k__ \
1115 || defined __m88k__ \
1116 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__
1120 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */
1122#else
1123 #define ECB_STDFP 0
1124#endif
1125
1126#ifndef ECB_NO_LIBM
1127
1128 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1129
1130 /* only the oldest of old doesn't have this one. solaris. */
1131 #ifdef INFINITY
1132 #define ECB_INFINITY INFINITY
1133 #else
1134 #define ECB_INFINITY HUGE_VAL
1135 #endif
1136
1137 #ifdef NAN
1138 #define ECB_NAN NAN
1139 #else
1140 #define ECB_NAN ECB_INFINITY
1141 #endif
1142
1143 /* converts an ieee half/binary16 to a float */
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1145 ecb_function_ float
1146 ecb_binary16_to_float (uint16_t x)
1147 {
1148 int e = (x >> 10) & 0x1f;
1149 int m = x & 0x3ff;
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159
1160 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1162 ecb_function_ uint32_t
1163 ecb_float_to_binary32 (float x)
1164 {
1165 uint32_t r;
1166
1167 #if ECB_STDFP
1168 memcpy (&r, &x, 4);
1169 #else
1170 /* slow emulation, works for anything but -0 */
1171 uint32_t m;
1172 int e;
1173
1174 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU;
1178
1179 m = frexpf (x, &e) * 0x1000000U;
1180
1181 r = m & 0x80000000U;
1182
1183 if (r)
1184 m = -m;
1185
1186 if (e <= -126)
1187 {
1188 m &= 0xffffffU;
1189 m >>= (-125 - e);
1190 e = -126;
1191 }
1192
1193 r |= (e + 126) << 23;
1194 r |= m & 0x7fffffU;
1195 #endif
1196
1197 return r;
1198 }
1199
1200 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1202 ecb_function_ float
1203 ecb_binary32_to_float (uint32_t x)
1204 {
1205 float r;
1206
1207 #if ECB_STDFP
1208 memcpy (&r, &x, 4);
1209 #else
1210 /* emulation, only works for normals and subnormals and +0 */
1211 int neg = x >> 31;
1212 int e = (x >> 23) & 0xffU;
1213
1214 x &= 0x7fffffU;
1215
1216 if (e)
1217 x |= 0x800000U;
1218 else
1219 e = 1;
1220
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1223
1224 r = neg ? -r : r;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1232 ecb_function_ uint64_t
1233 ecb_double_to_binary64 (double x)
1234 {
1235 uint64_t r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 8);
1239 #else
1240 /* slow emulation, works for anything but -0 */
1241 uint64_t m;
1242 int e;
1243
1244 if (x == 0e0 ) return 0x0000000000000000U;
1245 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1246 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1247 if (x != x ) return 0X7ff7ffffffffffffU;
1248
1249 m = frexp (x, &e) * 0x20000000000000U;
1250
1251 r = m & 0x8000000000000000;;
1252
1253 if (r)
1254 m = -m;
1255
1256 if (e <= -1022)
1257 {
1258 m &= 0x1fffffffffffffU;
1259 m >>= (-1021 - e);
1260 e = -1022;
1261 }
1262
1263 r |= ((uint64_t)(e + 1022)) << 52;
1264 r |= m & 0xfffffffffffffU;
1265 #endif
1266
1267 return r;
1268 }
1269
1270 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1272 ecb_function_ double
1273 ecb_binary64_to_double (uint64_t x)
1274 {
1275 double r;
1276
1277 #if ECB_STDFP
1278 memcpy (&r, &x, 8);
1279 #else
1280 /* emulation, only works for normals and subnormals and +0 */
1281 int neg = x >> 63;
1282 int e = (x >> 52) & 0x7ffU;
1283
1284 x &= 0xfffffffffffffU;
1285
1286 if (e)
1287 x |= 0x10000000000000U;
1288 else
1289 e = 1;
1290
1291 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1292 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1293
1294 r = neg ? -r : r;
1295 #endif
1296
1297 return r;
1298 }
1299
1300#endif
1301
1302#endif
1303
1304/* ECB.H END */
1305
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1310 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences.
1313 */
1314# error "memory fences not defined for your architecture, please report"
1315#endif
1316
1317#ifndef ECB_MEMORY_FENCE
1318# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif
1322
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
490#define inline_size static inline 1327#define inline_size ecb_inline
491 1328
492#if EV_FEATURE_CODE 1329#if EV_FEATURE_CODE
493# define inline_speed static inline 1330# define inline_speed ecb_inline
494#else 1331#else
495# define inline_speed static noinline 1332# define inline_speed static noinline
496#endif 1333#endif
497 1334
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1374# include "ev_win32.c"
538#endif 1375#endif
539 1376
540/*****************************************************************************/ 1377/*****************************************************************************/
541 1378
1379/* define a suitable floor function (only used by periodics atm) */
1380
1381#if EV_USE_FLOOR
1382# include <math.h>
1383# define ev_floor(v) floor (v)
1384#else
1385
1386#include <float.h>
1387
1388/* a floor() replacement function, should be independent of ev_tstamp type */
1389static ev_tstamp noinline
1390ev_floor (ev_tstamp v)
1391{
1392 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif
1398
1399 /* argument too large for an unsigned long? */
1400 if (expect_false (v >= shift))
1401 {
1402 ev_tstamp f;
1403
1404 if (v == v - 1.)
1405 return v; /* very large number */
1406
1407 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f);
1409 }
1410
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */
1420 return (unsigned long)v;
1421}
1422
1423#endif
1424
1425/*****************************************************************************/
1426
1427#ifdef __linux
1428# include <sys/utsname.h>
1429#endif
1430
1431static unsigned int noinline ecb_cold
1432ev_linux_version (void)
1433{
1434#ifdef __linux
1435 unsigned int v = 0;
1436 struct utsname buf;
1437 int i;
1438 char *p = buf.release;
1439
1440 if (uname (&buf))
1441 return 0;
1442
1443 for (i = 3+1; --i; )
1444 {
1445 unsigned int c = 0;
1446
1447 for (;;)
1448 {
1449 if (*p >= '0' && *p <= '9')
1450 c = c * 10 + *p++ - '0';
1451 else
1452 {
1453 p += *p == '.';
1454 break;
1455 }
1456 }
1457
1458 v = (v << 8) | c;
1459 }
1460
1461 return v;
1462#else
1463 return 0;
1464#endif
1465}
1466
1467/*****************************************************************************/
1468
542#if EV_AVOID_STDIO 1469#if EV_AVOID_STDIO
543static void noinline 1470static void noinline ecb_cold
544ev_printerr (const char *msg) 1471ev_printerr (const char *msg)
545{ 1472{
546 write (STDERR_FILENO, msg, strlen (msg)); 1473 write (STDERR_FILENO, msg, strlen (msg));
547} 1474}
548#endif 1475#endif
549 1476
550static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
551 1478
552void 1479void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1481{
555 syserr_cb = cb; 1482 syserr_cb = cb;
556} 1483}
557 1484
558static void noinline 1485static void noinline ecb_cold
559ev_syserr (const char *msg) 1486ev_syserr (const char *msg)
560{ 1487{
561 if (!msg) 1488 if (!msg)
562 msg = "(libev) system error"; 1489 msg = "(libev) system error";
563 1490
564 if (syserr_cb) 1491 if (syserr_cb)
565 syserr_cb (msg); 1492 syserr_cb (msg);
566 else 1493 else
567 { 1494 {
568#if EV_AVOID_STDIO 1495#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1496 ev_printerr (msg);
572 ev_printerr (": "); 1497 ev_printerr (": ");
573 ev_printerr (err); 1498 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1499 ev_printerr ("\n");
575#else 1500#else
576 perror (msg); 1501 perror (msg);
577#endif 1502#endif
578 abort (); 1503 abort ();
579 } 1504 }
580} 1505}
581 1506
582static void * 1507static void *
583ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1509{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1511 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1512 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it,
1514 * despite documenting it otherwise.
591 */ 1515 */
592 1516
593 if (size) 1517 if (size)
594 return realloc (ptr, size); 1518 return realloc (ptr, size);
595 1519
596 free (ptr); 1520 free (ptr);
597 return 0; 1521 return 0;
598#endif
599} 1522}
600 1523
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1525
603void 1526void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1528{
606 alloc = cb; 1529 alloc = cb;
607} 1530}
608 1531
609inline_speed void * 1532inline_speed void *
… …
612 ptr = alloc (ptr, size); 1535 ptr = alloc (ptr, size);
613 1536
614 if (!ptr && size) 1537 if (!ptr && size)
615 { 1538 {
616#if EV_AVOID_STDIO 1539#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1540 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1541#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1542 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1543#endif
621 abort (); 1544 abort ();
622 } 1545 }
623 1546
624 return ptr; 1547 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1565 unsigned char unused;
643#if EV_USE_EPOLL 1566#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1567 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1568#endif
646#if EV_SELECT_IS_WINSOCKET 1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1570 SOCKET handle;
1571#endif
1572#if EV_USE_IOCP
1573 OVERLAPPED or, ow;
648#endif 1574#endif
649} ANFD; 1575} ANFD;
650 1576
651/* stores the pending event set for a given watcher */ 1577/* stores the pending event set for a given watcher */
652typedef struct 1578typedef struct
… …
694 #undef VAR 1620 #undef VAR
695 }; 1621 };
696 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
697 1623
698 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1626
701#else 1627#else
702 1628
703 ev_tstamp ev_rt_now; 1629 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; 1630 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1631 #include "ev_vars.h"
706 #undef VAR 1632 #undef VAR
707 1633
708 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1643# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1644# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1646#endif
721 1647
722#define EVUNLOOP_RECURSE 0x80 1648#define EVBREAK_RECURSE 0x80
723 1649
724/*****************************************************************************/ 1650/*****************************************************************************/
725 1651
726#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1653ev_tstamp
728ev_time (void) 1654ev_time (void) EV_THROW
729{ 1655{
730#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
732 { 1658 {
733 struct timespec ts; 1659 struct timespec ts;
… …
757 return ev_time (); 1683 return ev_time ();
758} 1684}
759 1685
760#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
761ev_tstamp 1687ev_tstamp
762ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
763{ 1689{
764 return ev_rt_now; 1690 return ev_rt_now;
765} 1691}
766#endif 1692#endif
767 1693
768void 1694void
769ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
770{ 1696{
771 if (delay > 0.) 1697 if (delay > 0.)
772 { 1698 {
773#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
774 struct timespec ts; 1700 struct timespec ts;
775 1701
776 EV_SET_TS (ts, delay); 1702 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1704#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
780#else 1706#else
781 struct timeval tv; 1707 struct timeval tv;
782 1708
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 1710 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 1711 /* by older ones */
786 EV_SET_TV (tv, delay); 1712 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 1713 select (0, 0, 0, 0, &tv);
788#endif 1714#endif
789 } 1715 }
790} 1716}
791 1717
… …
802 1728
803 do 1729 do
804 ncur <<= 1; 1730 ncur <<= 1;
805 while (cnt > ncur); 1731 while (cnt > ncur);
806 1732
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1733 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1735 {
810 ncur *= elem; 1736 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1737 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1740 }
815 1741
816 return ncur; 1742 return ncur;
817} 1743}
818 1744
819static noinline void * 1745static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1746array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1747{
822 *cur = array_nextsize (elem, *cur, cnt); 1748 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1749 return ev_realloc (base, elem * *cur);
824} 1750}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1753 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1754
829#define array_needsize(type,base,cur,cnt,init) \ 1755#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1756 if (expect_false ((cnt) > (cur))) \
831 { \ 1757 { \
832 int ocur_ = (cur); \ 1758 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1759 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1760 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1761 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1762 }
837 1763
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1782{
857} 1783}
858 1784
859void noinline 1785void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1787{
862 W w_ = (W)w; 1788 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
864 1790
865 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
873 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
874} 1802}
875 1803
876inline_speed void 1804inline_speed void
877feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
878{ 1806{
… …
924 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
926} 1854}
927 1855
928void 1856void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1858{
931 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
933} 1861}
934 1862
… …
937inline_size void 1865inline_size void
938fd_reify (EV_P) 1866fd_reify (EV_P)
939{ 1867{
940 int i; 1868 int i;
941 1869
1870#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1871 for (i = 0; i < fdchangecnt; ++i)
1872 {
1873 int fd = fdchanges [i];
1874 ANFD *anfd = anfds + fd;
1875
1876 if (anfd->reify & EV__IOFDSET && anfd->head)
1877 {
1878 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1879
1880 if (handle != anfd->handle)
1881 {
1882 unsigned long arg;
1883
1884 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1885
1886 /* handle changed, but fd didn't - we need to do it in two steps */
1887 backend_modify (EV_A_ fd, anfd->events, 0);
1888 anfd->events = 0;
1889 anfd->handle = handle;
1890 }
1891 }
1892 }
1893#endif
1894
942 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
943 { 1896 {
944 int fd = fdchanges [i]; 1897 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1898 ANFD *anfd = anfds + fd;
946 ev_io *w; 1899 ev_io *w;
947 1900
948 unsigned char events = 0; 1901 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify;
949 1903
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1904 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1905
953#if EV_SELECT_IS_WINSOCKET 1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1907 {
956 unsigned long arg; 1908 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1909
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1911 anfd->events |= (unsigned char)w->events;
1912
1913 if (o_events != anfd->events)
1914 o_reify = EV__IOFDSET; /* actually |= */
959 } 1915 }
960#endif
961 1916
962 { 1917 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1918 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1919 }
973 1920
974 fdchangecnt = 0; 1921 fdchangecnt = 0;
975} 1922}
976 1923
… …
988 fdchanges [fdchangecnt - 1] = fd; 1935 fdchanges [fdchangecnt - 1] = fd;
989 } 1936 }
990} 1937}
991 1938
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1940inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1941fd_kill (EV_P_ int fd)
995{ 1942{
996 ev_io *w; 1943 ev_io *w;
997 1944
998 while ((w = (ev_io *)anfds [fd].head)) 1945 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1949 }
1003} 1950}
1004 1951
1005/* check whether the given fd is actually valid, for error recovery */ 1952/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1953inline_size int ecb_cold
1007fd_valid (int fd) 1954fd_valid (int fd)
1008{ 1955{
1009#ifdef _WIN32 1956#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1958#else
1012 return fcntl (fd, F_GETFD) != -1; 1959 return fcntl (fd, F_GETFD) != -1;
1013#endif 1960#endif
1014} 1961}
1015 1962
1016/* called on EBADF to verify fds */ 1963/* called on EBADF to verify fds */
1017static void noinline 1964static void noinline ecb_cold
1018fd_ebadf (EV_P) 1965fd_ebadf (EV_P)
1019{ 1966{
1020 int fd; 1967 int fd;
1021 1968
1022 for (fd = 0; fd < anfdmax; ++fd) 1969 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1971 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1972 fd_kill (EV_A_ fd);
1026} 1973}
1027 1974
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1975/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1976static void noinline ecb_cold
1030fd_enomem (EV_P) 1977fd_enomem (EV_P)
1031{ 1978{
1032 int fd; 1979 int fd;
1033 1980
1034 for (fd = anfdmax; fd--; ) 1981 for (fd = anfdmax; fd--; )
… …
1229 2176
1230/*****************************************************************************/ 2177/*****************************************************************************/
1231 2178
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2180
1234static void noinline 2181static void noinline ecb_cold
1235evpipe_init (EV_P) 2182evpipe_init (EV_P)
1236{ 2183{
1237 if (!ev_is_active (&pipe_w)) 2184 if (!ev_is_active (&pipe_w))
1238 { 2185 {
2186 int fds [2];
2187
1239# if EV_USE_EVENTFD 2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2191 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2192 fds [1] = eventfd (0, 0);
1243 2193
1244 if (evfd >= 0) 2194 if (fds [1] < 0)
2195# endif
1245 { 2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
1246 evpipe [0] = -1; 2203 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2204
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2205 if (evpipe [1] < 0)
2206 evpipe [1] = fds [1]; /* first call, set write fd */
2207 else
2208 {
2209 /* on subsequent calls, do not change evpipe [1] */
2210 /* so that evpipe_write can always rely on its value. */
2211 /* this branch does not do anything sensible on windows, */
2212 /* so must not be executed on windows */
2213
2214 dup2 (fds [1], evpipe [1]);
2215 close (fds [1]);
2216 }
2217
2218 fd_intern (evpipe [1]);
2219
2220 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2221 ev_io_start (EV_A_ &pipe_w);
2222 ev_unref (EV_A); /* watcher should not keep loop alive */
2223 }
2224}
2225
2226inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230
2231 if (expect_true (*flag))
2232 return;
2233
2234 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236
2237 pipe_write_skipped = 1;
2238
2239 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2240
2241 if (pipe_write_wanted)
2242 {
2243 int old_errno;
2244
2245 pipe_write_skipped = 0;
2246 ECB_MEMORY_FENCE_RELEASE;
2247
2248 old_errno = errno; /* save errno because write will clobber it */
2249
2250#if EV_USE_EVENTFD
2251 if (evpipe [0] < 0)
2252 {
2253 uint64_t counter = 1;
2254 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2255 }
1250 else 2256 else
1251# endif 2257#endif
1252 { 2258 {
1253 while (pipe (evpipe)) 2259#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1255 2261 DWORD sent;
1256 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1257 fd_intern (evpipe [1]); 2263 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else
2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1259 } 2268 }
1260
1261 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 }
1264}
1265
1266inline_size void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{
1269 if (!*flag)
1270 {
1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275
1276#if EV_USE_EVENTFD
1277 if (evfd >= 0)
1278 {
1279 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t));
1281 }
1282 else
1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1289 write (evpipe [1], &dummy, 1);
1290 2269
1291 errno = old_errno; 2270 errno = old_errno;
1292 } 2271 }
1293} 2272}
1294 2273
… …
1297static void 2276static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2277pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2278{
1300 int i; 2279 int i;
1301 2280
2281 if (revents & EV_READ)
2282 {
1302#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1304 { 2285 {
1305 uint64_t counter; 2286 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2288 }
1308 else 2289 else
1309#endif 2290#endif
1310 { 2291 {
1311 char dummy; 2292 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2293#ifdef _WIN32
2294 WSABUF buf;
2295 DWORD recvd;
2296 DWORD flags = 0;
2297 buf.buf = dummy;
2298 buf.len = sizeof (dummy);
2299 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2300#else
1313 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
2303 }
1314 } 2304 }
1315 2305
2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2309
2310#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2311 if (sig_pending)
1317 { 2312 {
1318 sig_pending = 0; 2313 sig_pending = 0;
2314
2315 ECB_MEMORY_FENCE;
1319 2316
1320 for (i = EV_NSIG - 1; i--; ) 2317 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2318 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2320 }
2321#endif
1324 2322
1325#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1326 if (async_pending) 2324 if (async_pending)
1327 { 2325 {
1328 async_pending = 0; 2326 async_pending = 0;
2327
2328 ECB_MEMORY_FENCE;
1329 2329
1330 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1332 { 2332 {
1333 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2336 }
1336 } 2337 }
1337#endif 2338#endif
1338} 2339}
1339 2340
1340/*****************************************************************************/ 2341/*****************************************************************************/
1341 2342
2343void
2344ev_feed_signal (int signum) EV_THROW
2345{
2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop;
2350
2351 if (!EV_A)
2352 return;
2353#endif
2354
2355 signals [signum - 1].pending = 1;
2356 evpipe_write (EV_A_ &sig_pending);
2357}
2358
1342static void 2359static void
1343ev_sighandler (int signum) 2360ev_sighandler (int signum)
1344{ 2361{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2362#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2363 signal (signum, ev_sighandler);
1351#endif 2364#endif
1352 2365
1353 signals [signum - 1].pending = 1; 2366 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2367}
1356 2368
1357void noinline 2369void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2371{
1360 WL w; 2372 WL w;
1361 2373
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2375 return;
1364 2376
1365 --signum; 2377 --signum;
1366 2378
1367#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2383 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2384 return;
1373#endif 2385#endif
1374 2386
1375 signals [signum].pending = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1376 2389
1377 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2392}
1380 2393
… …
1459 2472
1460#endif 2473#endif
1461 2474
1462/*****************************************************************************/ 2475/*****************************************************************************/
1463 2476
2477#if EV_USE_IOCP
2478# include "ev_iocp.c"
2479#endif
1464#if EV_USE_PORT 2480#if EV_USE_PORT
1465# include "ev_port.c" 2481# include "ev_port.c"
1466#endif 2482#endif
1467#if EV_USE_KQUEUE 2483#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2484# include "ev_kqueue.c"
… …
1475#endif 2491#endif
1476#if EV_USE_SELECT 2492#if EV_USE_SELECT
1477# include "ev_select.c" 2493# include "ev_select.c"
1478#endif 2494#endif
1479 2495
1480int 2496int ecb_cold
1481ev_version_major (void) 2497ev_version_major (void) EV_THROW
1482{ 2498{
1483 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
1484} 2500}
1485 2501
1486int 2502int ecb_cold
1487ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
1488{ 2504{
1489 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
1490} 2506}
1491 2507
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2508/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2509int inline_size ecb_cold
1494enable_secure (void) 2510enable_secure (void)
1495{ 2511{
1496#ifdef _WIN32 2512#ifdef _WIN32
1497 return 0; 2513 return 0;
1498#else 2514#else
1499 return getuid () != geteuid () 2515 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2516 || getgid () != getegid ();
1501#endif 2517#endif
1502} 2518}
1503 2519
1504unsigned int 2520unsigned int ecb_cold
1505ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
1506{ 2522{
1507 unsigned int flags = 0; 2523 unsigned int flags = 0;
1508 2524
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2530
1515 return flags; 2531 return flags;
1516} 2532}
1517 2533
1518unsigned int 2534unsigned int ecb_cold
1519ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
1520{ 2536{
1521 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
1522 2538
1523#ifndef __NetBSD__ 2539#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2551#endif
1536 2552
1537 return flags; 2553 return flags;
1538} 2554}
1539 2555
2556unsigned int ecb_cold
2557ev_embeddable_backends (void) EV_THROW
2558{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL;
2564
2565 return flags;
2566}
2567
1540unsigned int 2568unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2569ev_backend (EV_P) EV_THROW
1554{ 2570{
1555 return backend; 2571 return backend;
1556} 2572}
1557 2573
1558#if EV_FEATURE_API 2574#if EV_FEATURE_API
1559unsigned int 2575unsigned int
1560ev_iteration (EV_P) 2576ev_iteration (EV_P) EV_THROW
1561{ 2577{
1562 return loop_count; 2578 return loop_count;
1563} 2579}
1564 2580
1565unsigned int 2581unsigned int
1566ev_depth (EV_P) 2582ev_depth (EV_P) EV_THROW
1567{ 2583{
1568 return loop_depth; 2584 return loop_depth;
1569} 2585}
1570 2586
1571void 2587void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2589{
1574 io_blocktime = interval; 2590 io_blocktime = interval;
1575} 2591}
1576 2592
1577void 2593void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2595{
1580 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
1581} 2597}
1582 2598
1583void 2599void
1584ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2601{
1586 userdata = data; 2602 userdata = data;
1587} 2603}
1588 2604
1589void * 2605void *
1590ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
1591{ 2607{
1592 return userdata; 2608 return userdata;
1593} 2609}
1594 2610
2611void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1596{ 2613{
1597 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
1598} 2615}
1599 2616
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2617void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1601{ 2619{
1602 release_cb = release; 2620 release_cb = release;
1603 acquire_cb = acquire; 2621 acquire_cb = acquire;
1604} 2622}
1605#endif 2623#endif
1606 2624
1607/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2626static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2628{
1611 if (!backend) 2629 if (!backend)
1612 { 2630 {
2631 origflags = flags;
2632
1613#if EV_USE_REALTIME 2633#if EV_USE_REALTIME
1614 if (!have_realtime) 2634 if (!have_realtime)
1615 { 2635 {
1616 struct timespec ts; 2636 struct timespec ts;
1617 2637
… …
1639 if (!(flags & EVFLAG_NOENV) 2659 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2660 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2661 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2662 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2663
1644 ev_rt_now = ev_time (); 2664 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2665 mn_now = get_clock ();
1646 now_floor = mn_now; 2666 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2667 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2668#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2669 invoke_cb = ev_invoke_pending;
1650#endif 2670#endif
1651 2671
1652 io_blocktime = 0.; 2672 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2673 timeout_blocktime = 0.;
1654 backend = 0; 2674 backend = 0;
1655 backend_fd = -1; 2675 backend_fd = -1;
1656 sig_pending = 0; 2676 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2678 async_pending = 0;
1659#endif 2679#endif
2680 pipe_write_skipped = 0;
2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2686#endif
1663#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2689#endif
1666 2690
1667 if (!(flags & 0x0000ffffU)) 2691 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2692 flags |= ev_recommended_backends ();
1669 2693
2694#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif
1670#if EV_USE_PORT 2697#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2699#endif
1673#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2718#endif
1692 } 2719 }
1693} 2720}
1694 2721
1695/* free up a loop structure */ 2722/* free up a loop structure */
1696static void noinline 2723void ecb_cold
1697loop_destroy (EV_P) 2724ev_loop_destroy (EV_P)
1698{ 2725{
1699 int i; 2726 int i;
2727
2728#if EV_MULTIPLICITY
2729 /* mimic free (0) */
2730 if (!EV_A)
2731 return;
2732#endif
2733
2734#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt))
2737 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING;
2740 }
2741#endif
2742
2743#if EV_CHILD_ENABLE
2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2745 {
2746 ev_ref (EV_A); /* child watcher */
2747 ev_signal_stop (EV_A_ &childev);
2748 }
2749#endif
1700 2750
1701 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1702 { 2752 {
1703 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 2755
1706#if EV_USE_EVENTFD
1707 if (evfd >= 0)
1708 close (evfd);
1709#endif
1710
1711 if (evpipe [0] >= 0)
1712 {
1713 EV_WIN32_CLOSE_FD (evpipe [0]); 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 2758 }
1717 2759
1718#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 2762 close (sigfd);
… …
1726#endif 2768#endif
1727 2769
1728 if (backend_fd >= 0) 2770 if (backend_fd >= 0)
1729 close (backend_fd); 2771 close (backend_fd);
1730 2772
2773#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif
1731#if EV_USE_PORT 2776#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2778#endif
1734#if EV_USE_KQUEUE 2779#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2807 array_free (periodic, EMPTY);
1763#endif 2808#endif
1764#if EV_FORK_ENABLE 2809#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2810 array_free (fork, EMPTY);
1766#endif 2811#endif
2812#if EV_CLEANUP_ENABLE
2813 array_free (cleanup, EMPTY);
2814#endif
1767 array_free (prepare, EMPTY); 2815 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2816 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2817#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2818 array_free (async, EMPTY);
1771#endif 2819#endif
1772 2820
1773 backend = 0; 2821 backend = 0;
2822
2823#if EV_MULTIPLICITY
2824 if (ev_is_default_loop (EV_A))
2825#endif
2826 ev_default_loop_ptr = 0;
2827#if EV_MULTIPLICITY
2828 else
2829 ev_free (EV_A);
2830#endif
1774} 2831}
1775 2832
1776#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2834inline_size void infy_fork (EV_P);
1778#endif 2835#endif
… …
1791#endif 2848#endif
1792#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 2850 infy_fork (EV_A);
1794#endif 2851#endif
1795 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
1797 { 2855 {
1798 /* this "locks" the handlers against writing to the pipe */ 2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2857
1805 ev_ref (EV_A); 2858 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
1807 2860
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 2863
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 2867 }
2868#endif
1825 2869
1826 postfork = 0; 2870 postfork = 0;
1827} 2871}
1828 2872
1829#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
1830 2874
1831struct ev_loop * 2875struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
1833{ 2877{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2879
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
1838 2882
1839 if (ev_backend (EV_A)) 2883 if (ev_backend (EV_A))
1840 return EV_A; 2884 return EV_A;
1841 2885
2886 ev_free (EV_A);
1842 return 0; 2887 return 0;
1843} 2888}
1844 2889
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2890#endif /* multiplicity */
1858 2891
1859#if EV_VERIFY 2892#if EV_VERIFY
1860static void noinline 2893static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2894verify_watcher (EV_P_ W w)
1862{ 2895{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2897
1865 if (w->pending) 2898 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2900}
1868 2901
1869static void noinline 2902static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2903verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2904{
1872 int i; 2905 int i;
1873 2906
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2907 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2912
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2914 }
1882} 2915}
1883 2916
1884static void noinline 2917static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2918array_verify (EV_P_ W *ws, int cnt)
1886{ 2919{
1887 while (cnt--) 2920 while (cnt--)
1888 { 2921 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2924 }
1892} 2925}
1893#endif 2926#endif
1894 2927
1895#if EV_FEATURE_API 2928#if EV_FEATURE_API
1896void 2929void ecb_cold
1897ev_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
1898{ 2931{
1899#if EV_VERIFY 2932#if EV_VERIFY
1900 int i; 2933 int i;
1901 WL w; 2934 WL w, w2;
1902 2935
1903 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
1904 2937
1905 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2941
1909 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
1911 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2948 {
1913 verify_watcher (EV_A_ (W)w); 2949 verify_watcher (EV_A_ (W)w);
2950
2951 if (j++ & 1)
2952 {
2953 assert (("libev: io watcher list contains a loop", w != w2));
2954 w2 = w2->next;
2955 }
2956
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2959 }
2960 }
1917 2961
1918 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
1920 2964
1921#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2980#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2981 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2982 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2983#endif
1940 2984
2985#if EV_CLEANUP_ENABLE
2986 assert (cleanupmax >= cleanupcnt);
2987 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2988#endif
2989
1941#if EV_ASYNC_ENABLE 2990#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2991 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2993#endif
1945 2994
… …
1962#endif 3011#endif
1963} 3012}
1964#endif 3013#endif
1965 3014
1966#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1967struct ev_loop * 3016struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 3017#else
1970int 3018int
3019#endif
1971ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 3021{
1974 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
1975 { 3023 {
1976#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 3044
1997 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
1998} 3046}
1999 3047
2000void 3048void
2001ev_default_destroy (void) 3049ev_loop_fork (EV_P) EV_THROW
2002{ 3050{
2003#if EV_MULTIPLICITY 3051 postfork = 1;
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */
2025} 3052}
2026 3053
2027/*****************************************************************************/ 3054/*****************************************************************************/
2028 3055
2029void 3056void
… …
2031{ 3058{
2032 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
2033} 3060}
2034 3061
2035unsigned int 3062unsigned int
2036ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
2037{ 3064{
2038 int pri; 3065 int pri;
2039 unsigned int count = 0; 3066 unsigned int count = 0;
2040 3067
2041 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
… …
2045} 3072}
2046 3073
2047void noinline 3074void noinline
2048ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
2049{ 3076{
2050 int pri; 3077 pendingpri = NUMPRI;
2051 3078
2052 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
2053 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
2054 { 3084 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 3086
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059
2060 p->w->pending = 0; 3087 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
2063 } 3090 }
3091 }
2064} 3092}
2065 3093
2066#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3153 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3154 }
2127} 3155}
2128 3156
2129#if EV_PERIODIC_ENABLE 3157#if EV_PERIODIC_ENABLE
3158
3159static void noinline
3160periodic_recalc (EV_P_ ev_periodic *w)
3161{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164
3165 /* the above almost always errs on the low side */
3166 while (at <= ev_rt_now)
3167 {
3168 ev_tstamp nat = at + w->interval;
3169
3170 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at))
3172 {
3173 at = ev_rt_now;
3174 break;
3175 }
3176
3177 at = nat;
3178 }
3179
3180 ev_at (w) = at;
3181}
3182
2130/* make periodics pending */ 3183/* make periodics pending */
2131inline_size void 3184inline_size void
2132periodics_reify (EV_P) 3185periodics_reify (EV_P)
2133{ 3186{
2134 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2135 3188
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3190 {
2138 int feed_count = 0;
2139
2140 do 3191 do
2141 { 3192 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3194
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3195 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3204 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3205 downheap (periodics, periodiccnt, HEAP0);
2155 } 3206 }
2156 else if (w->interval) 3207 else if (w->interval)
2157 { 3208 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3209 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 3210 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3211 downheap (periodics, periodiccnt, HEAP0);
2174 } 3212 }
2175 else 3213 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3214 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3222 }
2185} 3223}
2186 3224
2187/* simply recalculate all periodics */ 3225/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3226/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3227static void noinline ecb_cold
2190periodics_reschedule (EV_P) 3228periodics_reschedule (EV_P)
2191{ 3229{
2192 int i; 3230 int i;
2193 3231
2194 /* adjust periodics after time jump */ 3232 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3235 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3236
2199 if (w->reschedule_cb) 3237 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3238 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3239 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3240 periodic_recalc (EV_A_ w);
2203 3241
2204 ANHE_at_cache (periodics [i]); 3242 ANHE_at_cache (periodics [i]);
2205 } 3243 }
2206 3244
2207 reheap (periodics, periodiccnt); 3245 reheap (periodics, periodiccnt);
2208} 3246}
2209#endif 3247#endif
2210 3248
2211/* adjust all timers by a given offset */ 3249/* adjust all timers by a given offset */
2212static void noinline 3250static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3251timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3252{
2215 int i; 3253 int i;
2216 3254
2217 for (i = 0; i < timercnt; ++i) 3255 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3292 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3293 * in the unlikely event of having been preempted here.
2256 */ 3294 */
2257 for (i = 4; --i; ) 3295 for (i = 4; --i; )
2258 { 3296 {
3297 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3298 rtmn_diff = ev_rt_now - mn_now;
2260 3299
3300 diff = odiff - rtmn_diff;
3301
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 3303 return; /* all is well */
2263 3304
2264 ev_rt_now = ev_time (); 3305 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3306 mn_now = get_clock ();
2266 now_floor = mn_now; 3307 now_floor = mn_now;
… …
2288 3329
2289 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2290 } 3331 }
2291} 3332}
2292 3333
2293void 3334int
2294ev_loop (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2295{ 3336{
2296#if EV_FEATURE_API 3337#if EV_FEATURE_API
2297 ++loop_depth; 3338 ++loop_depth;
2298#endif 3339#endif
2299 3340
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3341 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3342
2302 loop_done = EVUNLOOP_CANCEL; 3343 loop_done = EVBREAK_CANCEL;
2303 3344
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3345 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3346
2306 do 3347 do
2307 { 3348 {
… …
2350 /* calculate blocking time */ 3391 /* calculate blocking time */
2351 { 3392 {
2352 ev_tstamp waittime = 0.; 3393 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3394 ev_tstamp sleeptime = 0.;
2354 3395
3396 /* remember old timestamp for io_blocktime calculation */
3397 ev_tstamp prev_mn_now = mn_now;
3398
3399 /* update time to cancel out callback processing overhead */
3400 time_update (EV_A_ 1e100);
3401
3402 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1;
3404
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3408 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3409 waittime = MAX_BLOCKTIME;
2364 3410
2365 if (timercnt) 3411 if (timercnt)
2366 { 3412 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3413 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3414 if (waittime > to) waittime = to;
2369 } 3415 }
2370 3416
2371#if EV_PERIODIC_ENABLE 3417#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3418 if (periodiccnt)
2373 { 3419 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3420 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3421 if (waittime > to) waittime = to;
2376 } 3422 }
2377#endif 3423#endif
2378 3424
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3425 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3426 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3427 waittime = timeout_blocktime;
3428
3429 /* at this point, we NEED to wait, so we have to ensure */
3430 /* to pass a minimum nonzero value to the backend */
3431 if (expect_false (waittime < backend_mintime))
3432 waittime = backend_mintime;
2382 3433
2383 /* extra check because io_blocktime is commonly 0 */ 3434 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3435 if (expect_false (io_blocktime))
2385 { 3436 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3437 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3438
2388 if (sleeptime > waittime - backend_fudge) 3439 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3440 sleeptime = waittime - backend_mintime;
2390 3441
2391 if (expect_true (sleeptime > 0.)) 3442 if (expect_true (sleeptime > 0.))
2392 { 3443 {
2393 ev_sleep (sleeptime); 3444 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3445 waittime -= sleeptime;
… …
2397 } 3448 }
2398 3449
2399#if EV_FEATURE_API 3450#if EV_FEATURE_API
2400 ++loop_count; 3451 ++loop_count;
2401#endif 3452#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3456
3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
3460 if (pipe_write_skipped)
3461 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 }
3465
2405 3466
2406 /* update ev_rt_now, do magic */ 3467 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3468 time_update (EV_A_ waittime + sleeptime);
2408 } 3469 }
2409 3470
… …
2427 EV_INVOKE_PENDING; 3488 EV_INVOKE_PENDING;
2428 } 3489 }
2429 while (expect_true ( 3490 while (expect_true (
2430 activecnt 3491 activecnt
2431 && !loop_done 3492 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3494 ));
2434 3495
2435 if (loop_done == EVUNLOOP_ONE) 3496 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
2437 3498
2438#if EV_FEATURE_API 3499#if EV_FEATURE_API
2439 --loop_depth; 3500 --loop_depth;
2440#endif 3501#endif
3502
3503 return activecnt;
2441} 3504}
2442 3505
2443void 3506void
2444ev_unloop (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
2445{ 3508{
2446 loop_done = how; 3509 loop_done = how;
2447} 3510}
2448 3511
2449void 3512void
2450ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
2451{ 3514{
2452 ++activecnt; 3515 ++activecnt;
2453} 3516}
2454 3517
2455void 3518void
2456ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
2457{ 3520{
2458 --activecnt; 3521 --activecnt;
2459} 3522}
2460 3523
2461void 3524void
2462ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
2463{ 3526{
2464 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
2465} 3528}
2466 3529
2467void 3530void
2468ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
2469{ 3532{
2470 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
2471} 3534}
2472 3535
2473void 3536void
2474ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
2475{ 3538{
2476 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
2477 3540
2478 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3581 w->pending = 0;
2519 } 3582 }
2520} 3583}
2521 3584
2522int 3585int
2523ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3587{
2525 W w_ = (W)w; 3588 W w_ = (W)w;
2526 int pending = w_->pending; 3589 int pending = w_->pending;
2527 3590
2528 if (expect_true (pending)) 3591 if (expect_true (pending))
… …
2561} 3624}
2562 3625
2563/*****************************************************************************/ 3626/*****************************************************************************/
2564 3627
2565void noinline 3628void noinline
2566ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3630{
2568 int fd = w->fd; 3631 int fd = w->fd;
2569 3632
2570 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2571 return; 3634 return;
… …
2577 3640
2578 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
2581 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
2584 3650
2585 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2586} 3652}
2587 3653
2588void noinline 3654void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3656{
2591 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
2593 return; 3659 return;
2594 3660
… …
2597 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2598 3664
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3665 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2601 3667
2602 fd_change (EV_A_ w->fd, 1); 3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3669
2604 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
2605} 3671}
2606 3672
2607void noinline 3673void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3675{
2610 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
2611 return; 3677 return;
2612 3678
2613 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
… …
2627 3693
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3695}
2630 3696
2631void noinline 3697void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3699{
2634 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2636 return; 3702 return;
2637 3703
… …
2657 3723
2658 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2659} 3725}
2660 3726
2661void noinline 3727void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3729{
2664 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
2665 3733
2666 if (ev_is_active (w)) 3734 if (ev_is_active (w))
2667 { 3735 {
2668 if (w->repeat) 3736 if (w->repeat)
2669 { 3737 {
… …
2682 3750
2683 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
2684} 3752}
2685 3753
2686ev_tstamp 3754ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3756{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3758}
2691 3759
2692#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
2693void noinline 3761void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3763{
2696 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
2697 return; 3765 return;
2698 3766
2699 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3769 else if (w->interval)
2702 { 3770 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3771 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3772 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3773 }
2707 else 3774 else
2708 ev_at (w) = w->offset; 3775 ev_at (w) = w->offset;
2709 3776
2710 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
… …
2720 3787
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3789}
2723 3790
2724void noinline 3791void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3793{
2727 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
2729 return; 3796 return;
2730 3797
… …
2748 3815
2749 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
2750} 3817}
2751 3818
2752void noinline 3819void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3821{
2755 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
2758} 3825}
… …
2763#endif 3830#endif
2764 3831
2765#if EV_SIGNAL_ENABLE 3832#if EV_SIGNAL_ENABLE
2766 3833
2767void noinline 3834void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3836{
2770 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
2771 return; 3838 return;
2772 3839
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2775#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 3843 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 3845
2779 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
2780#endif 3848#endif
2781 3849
2782 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
2783 3851
2784#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 3899 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3900 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3901 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3902 sigaction (w->signum, &sa, 0);
2835 3903
3904 if (origflags & EVFLAG_NOSIGMASK)
3905 {
2836 sigemptyset (&sa.sa_mask); 3906 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3907 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3908 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3909 }
2839#endif 3910#endif
2840 } 3911 }
2841 3912
2842 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2843} 3914}
2844 3915
2845void noinline 3916void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3918{
2848 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2850 return; 3921 return;
2851 3922
… …
2882#endif 3953#endif
2883 3954
2884#if EV_CHILD_ENABLE 3955#if EV_CHILD_ENABLE
2885 3956
2886void 3957void
2887ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3959{
2889#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3962#endif
2892 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
… …
2899 3970
2900 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
2901} 3972}
2902 3973
2903void 3974void
2904ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3976{
2906 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
2908 return; 3979 return;
2909 3980
… …
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 4008
2938static void noinline 4009static void noinline
2939infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
2940{ 4011{
2941 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); 4012 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4015 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 4016
2943 if (w->wd >= 0) 4017 if (w->wd >= 0)
2944 { 4018 {
2945 struct statfs sfs; 4019 struct statfs sfs;
2946 4020
… …
2950 4024
2951 if (!fs_2625) 4025 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 4027 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 4031 || sfs.f_type == 0xEF53 /* ext2/3 */
4032 || sfs.f_type == 0x72b6 /* jffs2 */
4033 || sfs.f_type == 0x858458f6 /* ramfs */
4034 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 4037 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 4038 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 4039 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 4041 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4042 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 4043 }
… …
2984 if (!pend || pend == path) 4064 if (!pend || pend == path)
2985 break; 4065 break;
2986 4066
2987 *pend = 0; 4067 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 4068 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 4069 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4070 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 4071 }
2992 } 4072 }
2993 4073
2994 if (w->wd >= 0) 4074 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4141 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4142 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4143 }
3064} 4144}
3065 4145
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 4146inline_size void ecb_cold
3099ev_check_2625 (EV_P) 4147ev_check_2625 (EV_P)
3100{ 4148{
3101 /* kernels < 2.6.25 are borked 4149 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4151 */
… …
3108} 4156}
3109 4157
3110inline_size int 4158inline_size int
3111infy_newfd (void) 4159infy_newfd (void)
3112{ 4160{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4163 if (fd >= 0)
3116 return fd; 4164 return fd;
3117#endif 4165#endif
3118 return inotify_init (); 4166 return inotify_init ();
… …
3193#else 4241#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4243#endif
3196 4244
3197void 4245void
3198ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 4247{
3200 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4291 }
3244} 4292}
3245 4293
3246void 4294void
3247ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 4296{
3249 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3250 return; 4298 return;
3251 4299
3252 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
… …
3273 4321
3274 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3275} 4323}
3276 4324
3277void 4325void
3278ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 4327{
3280 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3282 return; 4330 return;
3283 4331
… …
3299} 4347}
3300#endif 4348#endif
3301 4349
3302#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3303void 4351void
3304ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4353{
3306 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3307 return; 4355 return;
3308 4356
3309 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
… …
3322 4370
3323 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3324} 4372}
3325 4373
3326void 4374void
3327ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4376{
3329 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3331 return; 4379 return;
3332 4380
… …
3346} 4394}
3347#endif 4395#endif
3348 4396
3349#if EV_PREPARE_ENABLE 4397#if EV_PREPARE_ENABLE
3350void 4398void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4400{
3353 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3354 return; 4402 return;
3355 4403
3356 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
… …
3361 4409
3362 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3363} 4411}
3364 4412
3365void 4413void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4415{
3368 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3370 return; 4418 return;
3371 4419
… …
3384} 4432}
3385#endif 4433#endif
3386 4434
3387#if EV_CHECK_ENABLE 4435#if EV_CHECK_ENABLE
3388void 4436void
3389ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4438{
3391 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3392 return; 4440 return;
3393 4441
3394 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
… …
3399 4447
3400 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3401} 4449}
3402 4450
3403void 4451void
3404ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4453{
3406 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3408 return; 4456 return;
3409 4457
… …
3422} 4470}
3423#endif 4471#endif
3424 4472
3425#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3426void noinline 4474void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4476{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4477 ev_run (w->other, EVRUN_NOWAIT);
3430} 4478}
3431 4479
3432static void 4480static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4481embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4482{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4483 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4484
3437 if (ev_cb (w)) 4485 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4486 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4487 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4488 ev_run (w->other, EVRUN_NOWAIT);
3441} 4489}
3442 4490
3443static void 4491static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4492embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4493{
… …
3449 EV_P = w->other; 4497 EV_P = w->other;
3450 4498
3451 while (fdchangecnt) 4499 while (fdchangecnt)
3452 { 4500 {
3453 fd_reify (EV_A); 4501 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4503 }
3456 } 4504 }
3457} 4505}
3458 4506
3459static void 4507static void
… …
3465 4513
3466 { 4514 {
3467 EV_P = w->other; 4515 EV_P = w->other;
3468 4516
3469 ev_loop_fork (EV_A); 4517 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4518 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4519 }
3472 4520
3473 ev_embed_start (EV_A_ w); 4521 ev_embed_start (EV_A_ w);
3474} 4522}
3475 4523
… …
3480 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
3481} 4529}
3482#endif 4530#endif
3483 4531
3484void 4532void
3485ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4534{
3487 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
3488 return; 4536 return;
3489 4537
3490 { 4538 {
… …
3511 4559
3512 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
3513} 4561}
3514 4562
3515void 4563void
3516ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4565{
3518 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
3520 return; 4568 return;
3521 4569
… …
3531} 4579}
3532#endif 4580#endif
3533 4581
3534#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
3535void 4583void
3536ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4585{
3538 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3539 return; 4587 return;
3540 4588
3541 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
… …
3546 4594
3547 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3548} 4596}
3549 4597
3550void 4598void
3551ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4600{
3553 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
3555 return; 4603 return;
3556 4604
… …
3567 4615
3568 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3569} 4617}
3570#endif 4618#endif
3571 4619
4620#if EV_CLEANUP_ENABLE
4621void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4623{
4624 if (expect_false (ev_is_active (w)))
4625 return;
4626
4627 EV_FREQUENT_CHECK;
4628
4629 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4631 cleanups [cleanupcnt - 1] = w;
4632
4633 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK;
4636}
4637
4638void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4640{
4641 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w)))
4643 return;
4644
4645 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A);
4647
4648 {
4649 int active = ev_active (w);
4650
4651 cleanups [active - 1] = cleanups [--cleanupcnt];
4652 ev_active (cleanups [active - 1]) = active;
4653 }
4654
4655 ev_stop (EV_A_ (W)w);
4656
4657 EV_FREQUENT_CHECK;
4658}
4659#endif
4660
3572#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
3573void 4662void
3574ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4664{
3576 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
3577 return; 4666 return;
4667
4668 w->sent = 0;
3578 4669
3579 evpipe_init (EV_A); 4670 evpipe_init (EV_A);
3580 4671
3581 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3582 4673
… …
3586 4677
3587 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
3588} 4679}
3589 4680
3590void 4681void
3591ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4683{
3593 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
3595 return; 4686 return;
3596 4687
… …
3607 4698
3608 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3609} 4700}
3610 4701
3611void 4702void
3612ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4704{
3614 w->sent = 1; 4705 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4706 evpipe_write (EV_A_ &async_pending);
3616} 4707}
3617#endif 4708#endif
… …
3654 4745
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4747}
3657 4748
3658void 4749void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4751{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4753
3663 if (expect_false (!once)) 4754 if (expect_false (!once))
3664 { 4755 {
… …
3685} 4776}
3686 4777
3687/*****************************************************************************/ 4778/*****************************************************************************/
3688 4779
3689#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
3690void 4781void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4783{
3693 int i, j; 4784 int i, j;
3694 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
3695 4786
3696 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4830 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4831#endif
3741 4832
3742#if EV_IDLE_ENABLE 4833#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4834 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4835 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4836 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4837 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4838#endif
3748 4839
3749#if EV_FORK_ENABLE 4840#if EV_FORK_ENABLE
… …
3802 4893
3803#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
3805#endif 4896#endif
3806 4897
3807#ifdef __cplusplus
3808}
3809#endif
3810

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