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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.474 by root, Wed Feb 11 19:20:21 2015 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 468#endif
451#endif
452
453 469
454/**/ 470/**/
455 471
456#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 474#else
459# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
460#endif 476#endif
461 477
462/* 478/*
463 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 481 */
470#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 */
471 484
472#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) */
473#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) */
474 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } 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)
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 (©) 2009-2015 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 0x00010004
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;
475#if __GNUC__ >= 4 546 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
477# 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
478#else 562#else
479# define expect(expr,value) (expr) 563 #include <inttypes.h>
480# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
482# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
483# 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
484#endif 577 #endif
578#endif
485 579
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#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
588 #define ECB_GCC_VERSION(major,minor) 0
589#else
590 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
591#endif
592
593#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
594
595#if __clang__ && defined __has_builtin
596 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
597#else
598 #define ECB_CLANG_BUILTIN(x) 0
599#endif
600
601#if __clang__ && defined __has_extension
602 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
603#else
604 #define ECB_CLANG_EXTENSION(x) 0
605#endif
606
607#define ECB_CPP (__cplusplus+0)
608#define ECB_CPP11 (__cplusplus >= 201103L)
609
610#if ECB_CPP
611 #define ECB_C 0
612 #define ECB_STDC_VERSION 0
613#else
614 #define ECB_C 1
615 #define ECB_STDC_VERSION __STDC_VERSION__
616#endif
617
618#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
619#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
620
621#if ECB_CPP
622 #define ECB_EXTERN_C extern "C"
623 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
624 #define ECB_EXTERN_C_END }
625#else
626 #define ECB_EXTERN_C extern
627 #define ECB_EXTERN_C_BEG
628 #define ECB_EXTERN_C_END
629#endif
630
631/*****************************************************************************/
632
633/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
634/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
635
636#if ECB_NO_THREADS
637 #define ECB_NO_SMP 1
638#endif
639
640#if ECB_NO_SMP
641 #define ECB_MEMORY_FENCE do { } while (0)
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
646 #if __i386 || __i386__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
648 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
649 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
650 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
652 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
653 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
654 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
656 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
657 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
659 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
660 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
662 #elif __aarch64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
664 #elif (__sparc || __sparc__) && !__sparcv8
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
668 #elif defined __s390__ || defined __s390x__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
670 #elif defined __mips__
671 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
672 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
674 #elif defined __alpha__
675 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
676 #elif defined __hppa__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
679 #elif defined __ia64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
681 #elif defined __m68k__
682 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
683 #elif defined __m88k__
684 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
685 #elif defined __sh__
686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
687 #endif
688 #endif
689#endif
690
691#ifndef ECB_MEMORY_FENCE
692 #if ECB_GCC_VERSION(4,7)
693 /* see comment below (stdatomic.h) about the C11 memory model. */
694 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
695 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
696 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
697
698 #elif ECB_CLANG_EXTENSION(c_atomic)
699 /* see comment below (stdatomic.h) about the C11 memory model. */
700 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
701 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
702 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
703
704 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
705 #define ECB_MEMORY_FENCE __sync_synchronize ()
706 #elif _MSC_VER >= 1500 /* VC++ 2008 */
707 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
708 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
709 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
710 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
711 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
712 #elif _MSC_VER >= 1400 /* VC++ 2005 */
713 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
714 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
715 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
716 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
717 #elif defined _WIN32
718 #include <WinNT.h>
719 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
720 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
721 #include <mbarrier.h>
722 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
724 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
725 #elif __xlC__
726 #define ECB_MEMORY_FENCE __sync ()
727 #endif
728#endif
729
730#ifndef ECB_MEMORY_FENCE
731 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
732 /* we assume that these memory fences work on all variables/all memory accesses, */
733 /* not just C11 atomics and atomic accesses */
734 #include <stdatomic.h>
735 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
736 /* any fence other than seq_cst, which isn't very efficient for us. */
737 /* Why that is, we don't know - either the C11 memory model is quite useless */
738 /* for most usages, or gcc and clang have a bug */
739 /* I *currently* lean towards the latter, and inefficiently implement */
740 /* all three of ecb's fences as a seq_cst fence */
741 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
742 /* for all __atomic_thread_fence's except seq_cst */
743 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
744 #endif
745#endif
746
747#ifndef ECB_MEMORY_FENCE
748 #if !ECB_AVOID_PTHREADS
749 /*
750 * if you get undefined symbol references to pthread_mutex_lock,
751 * or failure to find pthread.h, then you should implement
752 * the ECB_MEMORY_FENCE operations for your cpu/compiler
753 * OR provide pthread.h and link against the posix thread library
754 * of your system.
755 */
756 #include <pthread.h>
757 #define ECB_NEEDS_PTHREADS 1
758 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
759
760 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
761 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
762 #endif
763#endif
764
765#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
766 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
767#endif
768
769#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
770 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
771#endif
772
773/*****************************************************************************/
774
775#if ECB_CPP
776 #define ecb_inline static inline
777#elif ECB_GCC_VERSION(2,5)
778 #define ecb_inline static __inline__
779#elif ECB_C99
780 #define ecb_inline static inline
781#else
782 #define ecb_inline static
783#endif
784
785#if ECB_GCC_VERSION(3,3)
786 #define ecb_restrict __restrict__
787#elif ECB_C99
788 #define ecb_restrict restrict
789#else
790 #define ecb_restrict
791#endif
792
793typedef int ecb_bool;
794
795#define ECB_CONCAT_(a, b) a ## b
796#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
797#define ECB_STRINGIFY_(a) # a
798#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
799
800#define ecb_function_ ecb_inline
801
802#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
803 #define ecb_attribute(attrlist) __attribute__ (attrlist)
804#else
805 #define ecb_attribute(attrlist)
806#endif
807
808#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
809 #define ecb_is_constant(expr) __builtin_constant_p (expr)
810#else
811 /* possible C11 impl for integral types
812 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
813 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
814
815 #define ecb_is_constant(expr) 0
816#endif
817
818#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
819 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
820#else
821 #define ecb_expect(expr,value) (expr)
822#endif
823
824#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
825 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
826#else
827 #define ecb_prefetch(addr,rw,locality)
828#endif
829
830/* no emulation for ecb_decltype */
831#if ECB_CPP11
832 // older implementations might have problems with decltype(x)::type, work around it
833 template<class T> struct ecb_decltype_t { typedef T type; };
834 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
835#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
836 #define ecb_decltype(x) __typeof__ (x)
837#endif
838
839#if _MSC_VER >= 1300
840 #define ecb_deprecated __declspec (deprecated)
841#else
842 #define ecb_deprecated ecb_attribute ((__deprecated__))
843#endif
844
845#define ecb_noinline ecb_attribute ((__noinline__))
846#define ecb_unused ecb_attribute ((__unused__))
847#define ecb_const ecb_attribute ((__const__))
848#define ecb_pure ecb_attribute ((__pure__))
849
850/* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
851#if ECB_C11 || __IBMC_NORETURN
852 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
853 #define ecb_noreturn _Noreturn
854#else
855 #define ecb_noreturn ecb_attribute ((__noreturn__))
856#endif
857
858#if ECB_GCC_VERSION(4,3)
859 #define ecb_artificial ecb_attribute ((__artificial__))
860 #define ecb_hot ecb_attribute ((__hot__))
861 #define ecb_cold ecb_attribute ((__cold__))
862#else
863 #define ecb_artificial
864 #define ecb_hot
865 #define ecb_cold
866#endif
867
868/* put around conditional expressions if you are very sure that the */
869/* expression is mostly true or mostly false. note that these return */
870/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 871#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 872#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
873/* for compatibility to the rest of the world */
874#define ecb_likely(expr) ecb_expect_true (expr)
875#define ecb_unlikely(expr) ecb_expect_false (expr)
876
877/* count trailing zero bits and count # of one bits */
878#if ECB_GCC_VERSION(3,4) \
879 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
880 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
881 && ECB_CLANG_BUILTIN(__builtin_popcount))
882 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
883 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
884 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
885 #define ecb_ctz32(x) __builtin_ctz (x)
886 #define ecb_ctz64(x) __builtin_ctzll (x)
887 #define ecb_popcount32(x) __builtin_popcount (x)
888 /* no popcountll */
889#else
890 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
891 ecb_function_ ecb_const int
892 ecb_ctz32 (uint32_t x)
893 {
894 int r = 0;
895
896 x &= ~x + 1; /* this isolates the lowest bit */
897
898#if ECB_branchless_on_i386
899 r += !!(x & 0xaaaaaaaa) << 0;
900 r += !!(x & 0xcccccccc) << 1;
901 r += !!(x & 0xf0f0f0f0) << 2;
902 r += !!(x & 0xff00ff00) << 3;
903 r += !!(x & 0xffff0000) << 4;
904#else
905 if (x & 0xaaaaaaaa) r += 1;
906 if (x & 0xcccccccc) r += 2;
907 if (x & 0xf0f0f0f0) r += 4;
908 if (x & 0xff00ff00) r += 8;
909 if (x & 0xffff0000) r += 16;
910#endif
911
912 return r;
913 }
914
915 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
916 ecb_function_ ecb_const int
917 ecb_ctz64 (uint64_t x)
918 {
919 int shift = x & 0xffffffffU ? 0 : 32;
920 return ecb_ctz32 (x >> shift) + shift;
921 }
922
923 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
924 ecb_function_ ecb_const int
925 ecb_popcount32 (uint32_t x)
926 {
927 x -= (x >> 1) & 0x55555555;
928 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
929 x = ((x >> 4) + x) & 0x0f0f0f0f;
930 x *= 0x01010101;
931
932 return x >> 24;
933 }
934
935 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
936 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
937 {
938 int r = 0;
939
940 if (x >> 16) { x >>= 16; r += 16; }
941 if (x >> 8) { x >>= 8; r += 8; }
942 if (x >> 4) { x >>= 4; r += 4; }
943 if (x >> 2) { x >>= 2; r += 2; }
944 if (x >> 1) { r += 1; }
945
946 return r;
947 }
948
949 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
950 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
951 {
952 int r = 0;
953
954 if (x >> 32) { x >>= 32; r += 32; }
955
956 return r + ecb_ld32 (x);
957 }
958#endif
959
960ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
961ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
962ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
963ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
964
965ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
966ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
967{
968 return ( (x * 0x0802U & 0x22110U)
969 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
970}
971
972ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
973ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
974{
975 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
976 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
977 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
978 x = ( x >> 8 ) | ( x << 8);
979
980 return x;
981}
982
983ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
984ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
985{
986 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
987 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
988 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
989 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
990 x = ( x >> 16 ) | ( x << 16);
991
992 return x;
993}
994
995/* popcount64 is only available on 64 bit cpus as gcc builtin */
996/* so for this version we are lazy */
997ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
998ecb_function_ ecb_const int
999ecb_popcount64 (uint64_t x)
1000{
1001 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1002}
1003
1004ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1005ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1006ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1007ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1008ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1009ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1010ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1011ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1012
1013ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1014ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1015ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1016ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1017ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1018ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1019ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1020ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1021
1022#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1023 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1024 #define ecb_bswap32(x) __builtin_bswap32 (x)
1025 #define ecb_bswap64(x) __builtin_bswap64 (x)
1026#else
1027 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1028 ecb_function_ ecb_const uint16_t
1029 ecb_bswap16 (uint16_t x)
1030 {
1031 return ecb_rotl16 (x, 8);
1032 }
1033
1034 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1035 ecb_function_ ecb_const uint32_t
1036 ecb_bswap32 (uint32_t x)
1037 {
1038 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1039 }
1040
1041 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1042 ecb_function_ ecb_const uint64_t
1043 ecb_bswap64 (uint64_t x)
1044 {
1045 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1046 }
1047#endif
1048
1049#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1050 #define ecb_unreachable() __builtin_unreachable ()
1051#else
1052 /* this seems to work fine, but gcc always emits a warning for it :/ */
1053 ecb_inline ecb_noreturn void ecb_unreachable (void);
1054 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1055#endif
1056
1057/* try to tell the compiler that some condition is definitely true */
1058#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1059
1060ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1061ecb_inline ecb_const unsigned char
1062ecb_byteorder_helper (void)
1063{
1064 /* the union code still generates code under pressure in gcc, */
1065 /* but less than using pointers, and always seems to */
1066 /* successfully return a constant. */
1067 /* the reason why we have this horrible preprocessor mess */
1068 /* is to avoid it in all cases, at least on common architectures */
1069 /* or when using a recent enough gcc version (>= 4.6) */
1070#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1071 return 0x44;
1072#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1073 return 0x44;
1074#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1075 return 0x11;
1076#else
1077 union
1078 {
1079 uint32_t i;
1080 uint8_t c;
1081 } u = { 0x11223344 };
1082 return u.c;
1083#endif
1084}
1085
1086ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1087ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1088ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1089ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1090
1091#if ECB_GCC_VERSION(3,0) || ECB_C99
1092 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1093#else
1094 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1095#endif
1096
1097#if ECB_CPP
1098 template<typename T>
1099 static inline T ecb_div_rd (T val, T div)
1100 {
1101 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1102 }
1103 template<typename T>
1104 static inline T ecb_div_ru (T val, T div)
1105 {
1106 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1107 }
1108#else
1109 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1110 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1111#endif
1112
1113#if ecb_cplusplus_does_not_suck
1114 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1115 template<typename T, int N>
1116 static inline int ecb_array_length (const T (&arr)[N])
1117 {
1118 return N;
1119 }
1120#else
1121 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1122#endif
1123
1124/*******************************************************************************/
1125/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1126
1127/* basically, everything uses "ieee pure-endian" floating point numbers */
1128/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1129#if 0 \
1130 || __i386 || __i386__ \
1131 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1132 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1133 || defined __s390__ || defined __s390x__ \
1134 || defined __mips__ \
1135 || defined __alpha__ \
1136 || defined __hppa__ \
1137 || defined __ia64__ \
1138 || defined __m68k__ \
1139 || defined __m88k__ \
1140 || defined __sh__ \
1141 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1142 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1143 || defined __aarch64__
1144 #define ECB_STDFP 1
1145 #include <string.h> /* for memcpy */
1146#else
1147 #define ECB_STDFP 0
1148#endif
1149
1150#ifndef ECB_NO_LIBM
1151
1152 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1153
1154 /* only the oldest of old doesn't have this one. solaris. */
1155 #ifdef INFINITY
1156 #define ECB_INFINITY INFINITY
1157 #else
1158 #define ECB_INFINITY HUGE_VAL
1159 #endif
1160
1161 #ifdef NAN
1162 #define ECB_NAN NAN
1163 #else
1164 #define ECB_NAN ECB_INFINITY
1165 #endif
1166
1167 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1168 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1169 #else
1170 #define ecb_ldexpf(x,e) (float) ldexp ((x), (e))
1171 #endif
1172
1173 /* converts an ieee half/binary16 to a float */
1174 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1175 ecb_function_ ecb_const float
1176 ecb_binary16_to_float (uint16_t x)
1177 {
1178 int e = (x >> 10) & 0x1f;
1179 int m = x & 0x3ff;
1180 float r;
1181
1182 if (!e ) r = ecb_ldexpf (m , -24);
1183 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1184 else if (m ) r = ECB_NAN;
1185 else r = ECB_INFINITY;
1186
1187 return x & 0x8000 ? -r : r;
1188 }
1189
1190 /* convert a float to ieee single/binary32 */
1191 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1192 ecb_function_ ecb_const uint32_t
1193 ecb_float_to_binary32 (float x)
1194 {
1195 uint32_t r;
1196
1197 #if ECB_STDFP
1198 memcpy (&r, &x, 4);
1199 #else
1200 /* slow emulation, works for anything but -0 */
1201 uint32_t m;
1202 int e;
1203
1204 if (x == 0e0f ) return 0x00000000U;
1205 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1206 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1207 if (x != x ) return 0x7fbfffffU;
1208
1209 m = frexpf (x, &e) * 0x1000000U;
1210
1211 r = m & 0x80000000U;
1212
1213 if (r)
1214 m = -m;
1215
1216 if (e <= -126)
1217 {
1218 m &= 0xffffffU;
1219 m >>= (-125 - e);
1220 e = -126;
1221 }
1222
1223 r |= (e + 126) << 23;
1224 r |= m & 0x7fffffU;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* converts an ieee single/binary32 to a float */
1231 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1232 ecb_function_ ecb_const float
1233 ecb_binary32_to_float (uint32_t x)
1234 {
1235 float r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 4);
1239 #else
1240 /* emulation, only works for normals and subnormals and +0 */
1241 int neg = x >> 31;
1242 int e = (x >> 23) & 0xffU;
1243
1244 x &= 0x7fffffU;
1245
1246 if (e)
1247 x |= 0x800000U;
1248 else
1249 e = 1;
1250
1251 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1252 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1253
1254 r = neg ? -r : r;
1255 #endif
1256
1257 return r;
1258 }
1259
1260 /* convert a double to ieee double/binary64 */
1261 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1262 ecb_function_ ecb_const uint64_t
1263 ecb_double_to_binary64 (double x)
1264 {
1265 uint64_t r;
1266
1267 #if ECB_STDFP
1268 memcpy (&r, &x, 8);
1269 #else
1270 /* slow emulation, works for anything but -0 */
1271 uint64_t m;
1272 int e;
1273
1274 if (x == 0e0 ) return 0x0000000000000000U;
1275 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1276 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1277 if (x != x ) return 0X7ff7ffffffffffffU;
1278
1279 m = frexp (x, &e) * 0x20000000000000U;
1280
1281 r = m & 0x8000000000000000;;
1282
1283 if (r)
1284 m = -m;
1285
1286 if (e <= -1022)
1287 {
1288 m &= 0x1fffffffffffffU;
1289 m >>= (-1021 - e);
1290 e = -1022;
1291 }
1292
1293 r |= ((uint64_t)(e + 1022)) << 52;
1294 r |= m & 0xfffffffffffffU;
1295 #endif
1296
1297 return r;
1298 }
1299
1300 /* converts an ieee double/binary64 to a double */
1301 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1302 ecb_function_ ecb_const double
1303 ecb_binary64_to_double (uint64_t x)
1304 {
1305 double r;
1306
1307 #if ECB_STDFP
1308 memcpy (&r, &x, 8);
1309 #else
1310 /* emulation, only works for normals and subnormals and +0 */
1311 int neg = x >> 63;
1312 int e = (x >> 52) & 0x7ffU;
1313
1314 x &= 0xfffffffffffffU;
1315
1316 if (e)
1317 x |= 0x10000000000000U;
1318 else
1319 e = 1;
1320
1321 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1322 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1323
1324 r = neg ? -r : r;
1325 #endif
1326
1327 return r;
1328 }
1329
1330#endif
1331
1332#endif
1333
1334/* ECB.H END */
1335
1336#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1337/* if your architecture doesn't need memory fences, e.g. because it is
1338 * single-cpu/core, or if you use libev in a project that doesn't use libev
1339 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1340 * libev, in which cases the memory fences become nops.
1341 * alternatively, you can remove this #error and link against libpthread,
1342 * which will then provide the memory fences.
1343 */
1344# error "memory fences not defined for your architecture, please report"
1345#endif
1346
1347#ifndef ECB_MEMORY_FENCE
1348# define ECB_MEMORY_FENCE do { } while (0)
1349# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1350# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1351#endif
1352
1353#define expect_false(cond) ecb_expect_false (cond)
1354#define expect_true(cond) ecb_expect_true (cond)
1355#define noinline ecb_noinline
1356
488#define inline_size static inline 1357#define inline_size ecb_inline
489 1358
490#if EV_FEATURE_CODE 1359#if EV_FEATURE_CODE
491# define inline_speed static inline 1360# define inline_speed ecb_inline
492#else 1361#else
493# define inline_speed static noinline 1362# define inline_speed static noinline
494#endif 1363#endif
495 1364
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1365#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1404# include "ev_win32.c"
536#endif 1405#endif
537 1406
538/*****************************************************************************/ 1407/*****************************************************************************/
539 1408
1409/* define a suitable floor function (only used by periodics atm) */
1410
1411#if EV_USE_FLOOR
1412# include <math.h>
1413# define ev_floor(v) floor (v)
1414#else
1415
1416#include <float.h>
1417
1418/* a floor() replacement function, should be independent of ev_tstamp type */
1419static ev_tstamp noinline
1420ev_floor (ev_tstamp v)
1421{
1422 /* the choice of shift factor is not terribly important */
1423#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1424 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1425#else
1426 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1427#endif
1428
1429 /* argument too large for an unsigned long? */
1430 if (expect_false (v >= shift))
1431 {
1432 ev_tstamp f;
1433
1434 if (v == v - 1.)
1435 return v; /* very large number */
1436
1437 f = shift * ev_floor (v * (1. / shift));
1438 return f + ev_floor (v - f);
1439 }
1440
1441 /* special treatment for negative args? */
1442 if (expect_false (v < 0.))
1443 {
1444 ev_tstamp f = -ev_floor (-v);
1445
1446 return f - (f == v ? 0 : 1);
1447 }
1448
1449 /* fits into an unsigned long */
1450 return (unsigned long)v;
1451}
1452
1453#endif
1454
1455/*****************************************************************************/
1456
1457#ifdef __linux
1458# include <sys/utsname.h>
1459#endif
1460
1461static unsigned int noinline ecb_cold
1462ev_linux_version (void)
1463{
1464#ifdef __linux
1465 unsigned int v = 0;
1466 struct utsname buf;
1467 int i;
1468 char *p = buf.release;
1469
1470 if (uname (&buf))
1471 return 0;
1472
1473 for (i = 3+1; --i; )
1474 {
1475 unsigned int c = 0;
1476
1477 for (;;)
1478 {
1479 if (*p >= '0' && *p <= '9')
1480 c = c * 10 + *p++ - '0';
1481 else
1482 {
1483 p += *p == '.';
1484 break;
1485 }
1486 }
1487
1488 v = (v << 8) | c;
1489 }
1490
1491 return v;
1492#else
1493 return 0;
1494#endif
1495}
1496
1497/*****************************************************************************/
1498
540#if EV_AVOID_STDIO 1499#if EV_AVOID_STDIO
541static void noinline 1500static void noinline ecb_cold
542ev_printerr (const char *msg) 1501ev_printerr (const char *msg)
543{ 1502{
544 write (STDERR_FILENO, msg, strlen (msg)); 1503 write (STDERR_FILENO, msg, strlen (msg));
545} 1504}
546#endif 1505#endif
547 1506
548static void (*syserr_cb)(const char *msg); 1507static void (*syserr_cb)(const char *msg) EV_THROW;
549 1508
550void 1509void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1510ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1511{
553 syserr_cb = cb; 1512 syserr_cb = cb;
554} 1513}
555 1514
556static void noinline 1515static void noinline ecb_cold
557ev_syserr (const char *msg) 1516ev_syserr (const char *msg)
558{ 1517{
559 if (!msg) 1518 if (!msg)
560 msg = "(libev) system error"; 1519 msg = "(libev) system error";
561 1520
562 if (syserr_cb) 1521 if (syserr_cb)
563 syserr_cb (msg); 1522 syserr_cb (msg);
564 else 1523 else
565 { 1524 {
566#if EV_AVOID_STDIO 1525#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1526 ev_printerr (msg);
570 ev_printerr (": "); 1527 ev_printerr (": ");
571 ev_printerr (err); 1528 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1529 ev_printerr ("\n");
573#else 1530#else
574 perror (msg); 1531 perror (msg);
575#endif 1532#endif
576 abort (); 1533 abort ();
577 } 1534 }
578} 1535}
579 1536
580static void * 1537static void *
581ev_realloc_emul (void *ptr, long size) 1538ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1539{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1540 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1541 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1542 * the single unix specification, so work around them here.
1543 * recently, also (at least) fedora and debian started breaking it,
1544 * despite documenting it otherwise.
589 */ 1545 */
590 1546
591 if (size) 1547 if (size)
592 return realloc (ptr, size); 1548 return realloc (ptr, size);
593 1549
594 free (ptr); 1550 free (ptr);
595 return 0; 1551 return 0;
596#endif
597} 1552}
598 1553
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1554static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1555
601void 1556void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1557ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1558{
604 alloc = cb; 1559 alloc = cb;
605} 1560}
606 1561
607inline_speed void * 1562inline_speed void *
… …
610 ptr = alloc (ptr, size); 1565 ptr = alloc (ptr, size);
611 1566
612 if (!ptr && size) 1567 if (!ptr && size)
613 { 1568 {
614#if EV_AVOID_STDIO 1569#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1570 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1571#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1572 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1573#endif
619 abort (); 1574 abort ();
620 } 1575 }
621 1576
622 return ptr; 1577 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1594 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1595 unsigned char unused;
641#if EV_USE_EPOLL 1596#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1597 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1598#endif
644#if EV_SELECT_IS_WINSOCKET 1599#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1600 SOCKET handle;
1601#endif
1602#if EV_USE_IOCP
1603 OVERLAPPED or, ow;
646#endif 1604#endif
647} ANFD; 1605} ANFD;
648 1606
649/* stores the pending event set for a given watcher */ 1607/* stores the pending event set for a given watcher */
650typedef struct 1608typedef struct
… …
692 #undef VAR 1650 #undef VAR
693 }; 1651 };
694 #include "ev_wrap.h" 1652 #include "ev_wrap.h"
695 1653
696 static struct ev_loop default_loop_struct; 1654 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1655 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1656
699#else 1657#else
700 1658
701 ev_tstamp ev_rt_now; 1659 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1660 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1661 #include "ev_vars.h"
704 #undef VAR 1662 #undef VAR
705 1663
706 static int ev_default_loop_ptr; 1664 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1673# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1674# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1675# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1676#endif
719 1677
720#define EVUNLOOP_RECURSE 0x80 1678#define EVBREAK_RECURSE 0x80
721 1679
722/*****************************************************************************/ 1680/*****************************************************************************/
723 1681
724#ifndef EV_HAVE_EV_TIME 1682#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1683ev_tstamp
726ev_time (void) 1684ev_time (void) EV_THROW
727{ 1685{
728#if EV_USE_REALTIME 1686#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1687 if (expect_true (have_realtime))
730 { 1688 {
731 struct timespec ts; 1689 struct timespec ts;
… …
755 return ev_time (); 1713 return ev_time ();
756} 1714}
757 1715
758#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
759ev_tstamp 1717ev_tstamp
760ev_now (EV_P) 1718ev_now (EV_P) EV_THROW
761{ 1719{
762 return ev_rt_now; 1720 return ev_rt_now;
763} 1721}
764#endif 1722#endif
765 1723
766void 1724void
767ev_sleep (ev_tstamp delay) 1725ev_sleep (ev_tstamp delay) EV_THROW
768{ 1726{
769 if (delay > 0.) 1727 if (delay > 0.)
770 { 1728 {
771#if EV_USE_NANOSLEEP 1729#if EV_USE_NANOSLEEP
772 struct timespec ts; 1730 struct timespec ts;
773 1731
774 ts.tv_sec = (time_t)delay; 1732 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1733 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1734#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1735 Sleep ((unsigned long)(delay * 1e3));
780#else 1736#else
781 struct timeval tv; 1737 struct timeval tv;
782 1738
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1739 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1740 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1741 /* by older ones */
1742 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1743 select (0, 0, 0, 0, &tv);
790#endif 1744#endif
791 } 1745 }
792} 1746}
793 1747
… …
804 1758
805 do 1759 do
806 ncur <<= 1; 1760 ncur <<= 1;
807 while (cnt > ncur); 1761 while (cnt > ncur);
808 1762
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1763 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1764 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1765 {
812 ncur *= elem; 1766 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1767 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1768 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1770 }
817 1771
818 return ncur; 1772 return ncur;
819} 1773}
820 1774
821static noinline void * 1775static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1776array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1777{
824 *cur = array_nextsize (elem, *cur, cnt); 1778 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1779 return ev_realloc (base, elem * *cur);
826} 1780}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1783 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1784
831#define array_needsize(type,base,cur,cnt,init) \ 1785#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1786 if (expect_false ((cnt) > (cur))) \
833 { \ 1787 { \
834 int ocur_ = (cur); \ 1788 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1789 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1790 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1791 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1792 }
839 1793
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1811pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1812{
859} 1813}
860 1814
861void noinline 1815void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1816ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1817{
864 W w_ = (W)w; 1818 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1819 int pri = ABSPRI (w_);
866 1820
867 if (expect_false (w_->pending)) 1821 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1825 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1826 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1827 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1828 pendings [pri][w_->pending - 1].events = revents;
875 } 1829 }
1830
1831 pendingpri = NUMPRI - 1;
876} 1832}
877 1833
878inline_speed void 1834inline_speed void
879feed_reverse (EV_P_ W w) 1835feed_reverse (EV_P_ W w)
880{ 1836{
… …
926 if (expect_true (!anfd->reify)) 1882 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1883 fd_event_nocheck (EV_A_ fd, revents);
928} 1884}
929 1885
930void 1886void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1887ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1888{
933 if (fd >= 0 && fd < anfdmax) 1889 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1890 fd_event_nocheck (EV_A_ fd, revents);
935} 1891}
936 1892
… …
939inline_size void 1895inline_size void
940fd_reify (EV_P) 1896fd_reify (EV_P)
941{ 1897{
942 int i; 1898 int i;
943 1899
1900#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1901 for (i = 0; i < fdchangecnt; ++i)
1902 {
1903 int fd = fdchanges [i];
1904 ANFD *anfd = anfds + fd;
1905
1906 if (anfd->reify & EV__IOFDSET && anfd->head)
1907 {
1908 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1909
1910 if (handle != anfd->handle)
1911 {
1912 unsigned long arg;
1913
1914 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1915
1916 /* handle changed, but fd didn't - we need to do it in two steps */
1917 backend_modify (EV_A_ fd, anfd->events, 0);
1918 anfd->events = 0;
1919 anfd->handle = handle;
1920 }
1921 }
1922 }
1923#endif
1924
944 for (i = 0; i < fdchangecnt; ++i) 1925 for (i = 0; i < fdchangecnt; ++i)
945 { 1926 {
946 int fd = fdchanges [i]; 1927 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1928 ANFD *anfd = anfds + fd;
948 ev_io *w; 1929 ev_io *w;
949 1930
950 unsigned char events = 0; 1931 unsigned char o_events = anfd->events;
1932 unsigned char o_reify = anfd->reify;
951 1933
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1934 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1935
955#if EV_SELECT_IS_WINSOCKET 1936 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1937 {
958 unsigned long arg; 1938 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1939
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1940 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1941 anfd->events |= (unsigned char)w->events;
1942
1943 if (o_events != anfd->events)
1944 o_reify = EV__IOFDSET; /* actually |= */
961 } 1945 }
962#endif
963 1946
964 { 1947 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1948 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1949 }
975 1950
976 fdchangecnt = 0; 1951 fdchangecnt = 0;
977} 1952}
978 1953
… …
990 fdchanges [fdchangecnt - 1] = fd; 1965 fdchanges [fdchangecnt - 1] = fd;
991 } 1966 }
992} 1967}
993 1968
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1969/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1970inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1971fd_kill (EV_P_ int fd)
997{ 1972{
998 ev_io *w; 1973 ev_io *w;
999 1974
1000 while ((w = (ev_io *)anfds [fd].head)) 1975 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1978 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1979 }
1005} 1980}
1006 1981
1007/* check whether the given fd is actually valid, for error recovery */ 1982/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1983inline_size int ecb_cold
1009fd_valid (int fd) 1984fd_valid (int fd)
1010{ 1985{
1011#ifdef _WIN32 1986#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1987 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1988#else
1014 return fcntl (fd, F_GETFD) != -1; 1989 return fcntl (fd, F_GETFD) != -1;
1015#endif 1990#endif
1016} 1991}
1017 1992
1018/* called on EBADF to verify fds */ 1993/* called on EBADF to verify fds */
1019static void noinline 1994static void noinline ecb_cold
1020fd_ebadf (EV_P) 1995fd_ebadf (EV_P)
1021{ 1996{
1022 int fd; 1997 int fd;
1023 1998
1024 for (fd = 0; fd < anfdmax; ++fd) 1999 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 2001 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 2002 fd_kill (EV_A_ fd);
1028} 2003}
1029 2004
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 2005/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 2006static void noinline ecb_cold
1032fd_enomem (EV_P) 2007fd_enomem (EV_P)
1033{ 2008{
1034 int fd; 2009 int fd;
1035 2010
1036 for (fd = anfdmax; fd--; ) 2011 for (fd = anfdmax; fd--; )
… …
1231 2206
1232/*****************************************************************************/ 2207/*****************************************************************************/
1233 2208
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2209#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2210
1236static void noinline 2211static void noinline ecb_cold
1237evpipe_init (EV_P) 2212evpipe_init (EV_P)
1238{ 2213{
1239 if (!ev_is_active (&pipe_w)) 2214 if (!ev_is_active (&pipe_w))
1240 { 2215 {
2216 int fds [2];
2217
1241# if EV_USE_EVENTFD 2218# if EV_USE_EVENTFD
2219 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2220 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2221 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2222 fds [1] = eventfd (0, 0);
1245 2223
1246 if (evfd >= 0) 2224 if (fds [1] < 0)
2225# endif
1247 { 2226 {
2227 while (pipe (fds))
2228 ev_syserr ("(libev) error creating signal/async pipe");
2229
2230 fd_intern (fds [0]);
2231 }
2232
1248 evpipe [0] = -1; 2233 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2234
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2235 if (evpipe [1] < 0)
2236 evpipe [1] = fds [1]; /* first call, set write fd */
2237 else
2238 {
2239 /* on subsequent calls, do not change evpipe [1] */
2240 /* so that evpipe_write can always rely on its value. */
2241 /* this branch does not do anything sensible on windows, */
2242 /* so must not be executed on windows */
2243
2244 dup2 (fds [1], evpipe [1]);
2245 close (fds [1]);
2246 }
2247
2248 fd_intern (evpipe [1]);
2249
2250 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2251 ev_io_start (EV_A_ &pipe_w);
2252 ev_unref (EV_A); /* watcher should not keep loop alive */
2253 }
2254}
2255
2256inline_speed void
2257evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2258{
2259 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2260
2261 if (expect_true (*flag))
2262 return;
2263
2264 *flag = 1;
2265 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2266
2267 pipe_write_skipped = 1;
2268
2269 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2270
2271 if (pipe_write_wanted)
2272 {
2273 int old_errno;
2274
2275 pipe_write_skipped = 0;
2276 ECB_MEMORY_FENCE_RELEASE;
2277
2278 old_errno = errno; /* save errno because write will clobber it */
2279
2280#if EV_USE_EVENTFD
2281 if (evpipe [0] < 0)
2282 {
2283 uint64_t counter = 1;
2284 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2285 }
1252 else 2286 else
1253# endif 2287#endif
1254 { 2288 {
1255 while (pipe (evpipe)) 2289#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2290 WSABUF buf;
1257 2291 DWORD sent;
1258 fd_intern (evpipe [0]); 2292 buf.buf = &buf;
1259 fd_intern (evpipe [1]); 2293 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2294 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2295#else
2296 write (evpipe [1], &(evpipe [1]), 1);
2297#endif
1261 } 2298 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1291 write (evpipe [1], &dummy, 1);
1292 2299
1293 errno = old_errno; 2300 errno = old_errno;
1294 } 2301 }
1295} 2302}
1296 2303
… …
1299static void 2306static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2307pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2308{
1302 int i; 2309 int i;
1303 2310
2311 if (revents & EV_READ)
2312 {
1304#if EV_USE_EVENTFD 2313#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2314 if (evpipe [0] < 0)
1306 { 2315 {
1307 uint64_t counter; 2316 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2317 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2318 }
1310 else 2319 else
1311#endif 2320#endif
1312 { 2321 {
1313 char dummy; 2322 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2323#ifdef _WIN32
2324 WSABUF buf;
2325 DWORD recvd;
2326 DWORD flags = 0;
2327 buf.buf = dummy;
2328 buf.len = sizeof (dummy);
2329 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2330#else
1315 read (evpipe [0], &dummy, 1); 2331 read (evpipe [0], &dummy, sizeof (dummy));
2332#endif
2333 }
1316 } 2334 }
1317 2335
2336 pipe_write_skipped = 0;
2337
2338 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2339
2340#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2341 if (sig_pending)
1319 { 2342 {
1320 sig_pending = 0; 2343 sig_pending = 0;
2344
2345 ECB_MEMORY_FENCE;
1321 2346
1322 for (i = EV_NSIG - 1; i--; ) 2347 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2348 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2349 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2350 }
2351#endif
1326 2352
1327#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1328 if (async_pending) 2354 if (async_pending)
1329 { 2355 {
1330 async_pending = 0; 2356 async_pending = 0;
2357
2358 ECB_MEMORY_FENCE;
1331 2359
1332 for (i = asynccnt; i--; ) 2360 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2361 if (asyncs [i]->sent)
1334 { 2362 {
1335 asyncs [i]->sent = 0; 2363 asyncs [i]->sent = 0;
2364 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2365 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2366 }
1338 } 2367 }
1339#endif 2368#endif
1340} 2369}
1341 2370
1342/*****************************************************************************/ 2371/*****************************************************************************/
1343 2372
2373void
2374ev_feed_signal (int signum) EV_THROW
2375{
2376#if EV_MULTIPLICITY
2377 EV_P;
2378 ECB_MEMORY_FENCE_ACQUIRE;
2379 EV_A = signals [signum - 1].loop;
2380
2381 if (!EV_A)
2382 return;
2383#endif
2384
2385 signals [signum - 1].pending = 1;
2386 evpipe_write (EV_A_ &sig_pending);
2387}
2388
1344static void 2389static void
1345ev_sighandler (int signum) 2390ev_sighandler (int signum)
1346{ 2391{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2392#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2393 signal (signum, ev_sighandler);
1353#endif 2394#endif
1354 2395
1355 signals [signum - 1].pending = 1; 2396 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2397}
1358 2398
1359void noinline 2399void noinline
1360ev_feed_signal_event (EV_P_ int signum) 2400ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 2401{
1362 WL w; 2402 WL w;
1363 2403
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2404 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2405 return;
1366 2406
1367 --signum; 2407 --signum;
1368 2408
1369#if EV_MULTIPLICITY 2409#if EV_MULTIPLICITY
… …
1373 if (expect_false (signals [signum].loop != EV_A)) 2413 if (expect_false (signals [signum].loop != EV_A))
1374 return; 2414 return;
1375#endif 2415#endif
1376 2416
1377 signals [signum].pending = 0; 2417 signals [signum].pending = 0;
2418 ECB_MEMORY_FENCE_RELEASE;
1378 2419
1379 for (w = signals [signum].head; w; w = w->next) 2420 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2421 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2422}
1382 2423
… …
1461 2502
1462#endif 2503#endif
1463 2504
1464/*****************************************************************************/ 2505/*****************************************************************************/
1465 2506
2507#if EV_USE_IOCP
2508# include "ev_iocp.c"
2509#endif
1466#if EV_USE_PORT 2510#if EV_USE_PORT
1467# include "ev_port.c" 2511# include "ev_port.c"
1468#endif 2512#endif
1469#if EV_USE_KQUEUE 2513#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2514# include "ev_kqueue.c"
… …
1477#endif 2521#endif
1478#if EV_USE_SELECT 2522#if EV_USE_SELECT
1479# include "ev_select.c" 2523# include "ev_select.c"
1480#endif 2524#endif
1481 2525
1482int 2526int ecb_cold
1483ev_version_major (void) 2527ev_version_major (void) EV_THROW
1484{ 2528{
1485 return EV_VERSION_MAJOR; 2529 return EV_VERSION_MAJOR;
1486} 2530}
1487 2531
1488int 2532int ecb_cold
1489ev_version_minor (void) 2533ev_version_minor (void) EV_THROW
1490{ 2534{
1491 return EV_VERSION_MINOR; 2535 return EV_VERSION_MINOR;
1492} 2536}
1493 2537
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2538/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2539int inline_size ecb_cold
1496enable_secure (void) 2540enable_secure (void)
1497{ 2541{
1498#ifdef _WIN32 2542#ifdef _WIN32
1499 return 0; 2543 return 0;
1500#else 2544#else
1501 return getuid () != geteuid () 2545 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2546 || getgid () != getegid ();
1503#endif 2547#endif
1504} 2548}
1505 2549
1506unsigned int 2550unsigned int ecb_cold
1507ev_supported_backends (void) 2551ev_supported_backends (void) EV_THROW
1508{ 2552{
1509 unsigned int flags = 0; 2553 unsigned int flags = 0;
1510 2554
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2555 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2556 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2559 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2560
1517 return flags; 2561 return flags;
1518} 2562}
1519 2563
1520unsigned int 2564unsigned int ecb_cold
1521ev_recommended_backends (void) 2565ev_recommended_backends (void) EV_THROW
1522{ 2566{
1523 unsigned int flags = ev_supported_backends (); 2567 unsigned int flags = ev_supported_backends ();
1524 2568
1525#ifndef __NetBSD__ 2569#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2570 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2581#endif
1538 2582
1539 return flags; 2583 return flags;
1540} 2584}
1541 2585
2586unsigned int ecb_cold
2587ev_embeddable_backends (void) EV_THROW
2588{
2589 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2590
2591 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2592 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2593 flags &= ~EVBACKEND_EPOLL;
2594
2595 return flags;
2596}
2597
1542unsigned int 2598unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2599ev_backend (EV_P) EV_THROW
1556{ 2600{
1557 return backend; 2601 return backend;
1558} 2602}
1559 2603
1560#if EV_FEATURE_API 2604#if EV_FEATURE_API
1561unsigned int 2605unsigned int
1562ev_iteration (EV_P) 2606ev_iteration (EV_P) EV_THROW
1563{ 2607{
1564 return loop_count; 2608 return loop_count;
1565} 2609}
1566 2610
1567unsigned int 2611unsigned int
1568ev_depth (EV_P) 2612ev_depth (EV_P) EV_THROW
1569{ 2613{
1570 return loop_depth; 2614 return loop_depth;
1571} 2615}
1572 2616
1573void 2617void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2618ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2619{
1576 io_blocktime = interval; 2620 io_blocktime = interval;
1577} 2621}
1578 2622
1579void 2623void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2624ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2625{
1582 timeout_blocktime = interval; 2626 timeout_blocktime = interval;
1583} 2627}
1584 2628
1585void 2629void
1586ev_set_userdata (EV_P_ void *data) 2630ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2631{
1588 userdata = data; 2632 userdata = data;
1589} 2633}
1590 2634
1591void * 2635void *
1592ev_userdata (EV_P) 2636ev_userdata (EV_P) EV_THROW
1593{ 2637{
1594 return userdata; 2638 return userdata;
1595} 2639}
1596 2640
2641void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2642ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1598{ 2643{
1599 invoke_cb = invoke_pending_cb; 2644 invoke_cb = invoke_pending_cb;
1600} 2645}
1601 2646
2647void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2648ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2649{
1604 release_cb = release; 2650 release_cb = release;
1605 acquire_cb = acquire; 2651 acquire_cb = acquire;
1606} 2652}
1607#endif 2653#endif
1608 2654
1609/* initialise a loop structure, must be zero-initialised */ 2655/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2656static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2657loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2658{
1613 if (!backend) 2659 if (!backend)
1614 { 2660 {
2661 origflags = flags;
2662
1615#if EV_USE_REALTIME 2663#if EV_USE_REALTIME
1616 if (!have_realtime) 2664 if (!have_realtime)
1617 { 2665 {
1618 struct timespec ts; 2666 struct timespec ts;
1619 2667
… …
1641 if (!(flags & EVFLAG_NOENV) 2689 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2690 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2691 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2692 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2693
1646 ev_rt_now = ev_time (); 2694 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2695 mn_now = get_clock ();
1648 now_floor = mn_now; 2696 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2697 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2698#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2699 invoke_cb = ev_invoke_pending;
1652#endif 2700#endif
1653 2701
1654 io_blocktime = 0.; 2702 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2703 timeout_blocktime = 0.;
1656 backend = 0; 2704 backend = 0;
1657 backend_fd = -1; 2705 backend_fd = -1;
1658 sig_pending = 0; 2706 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2707#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2708 async_pending = 0;
1661#endif 2709#endif
2710 pipe_write_skipped = 0;
2711 pipe_write_wanted = 0;
2712 evpipe [0] = -1;
2713 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 2714#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2716#endif
1665#if EV_USE_SIGNALFD 2717#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2719#endif
1668 2720
1669 if (!(flags & 0x0000ffffU)) 2721 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2722 flags |= ev_recommended_backends ();
1671 2723
2724#if EV_USE_IOCP
2725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2726#endif
1672#if EV_USE_PORT 2727#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2729#endif
1675#if EV_USE_KQUEUE 2730#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2748#endif
1694 } 2749 }
1695} 2750}
1696 2751
1697/* free up a loop structure */ 2752/* free up a loop structure */
1698static void noinline 2753void ecb_cold
1699loop_destroy (EV_P) 2754ev_loop_destroy (EV_P)
1700{ 2755{
1701 int i; 2756 int i;
2757
2758#if EV_MULTIPLICITY
2759 /* mimic free (0) */
2760 if (!EV_A)
2761 return;
2762#endif
2763
2764#if EV_CLEANUP_ENABLE
2765 /* queue cleanup watchers (and execute them) */
2766 if (expect_false (cleanupcnt))
2767 {
2768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2769 EV_INVOKE_PENDING;
2770 }
2771#endif
2772
2773#if EV_CHILD_ENABLE
2774 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2775 {
2776 ev_ref (EV_A); /* child watcher */
2777 ev_signal_stop (EV_A_ &childev);
2778 }
2779#endif
1702 2780
1703 if (ev_is_active (&pipe_w)) 2781 if (ev_is_active (&pipe_w))
1704 { 2782 {
1705 /*ev_ref (EV_A);*/ 2783 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2784 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 2785
1708#if EV_USE_EVENTFD
1709 if (evfd >= 0)
1710 close (evfd);
1711#endif
1712
1713 if (evpipe [0] >= 0)
1714 {
1715 EV_WIN32_CLOSE_FD (evpipe [0]); 2786 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 2787 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 2788 }
1719 2789
1720#if EV_USE_SIGNALFD 2790#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 2791 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 2792 close (sigfd);
… …
1728#endif 2798#endif
1729 2799
1730 if (backend_fd >= 0) 2800 if (backend_fd >= 0)
1731 close (backend_fd); 2801 close (backend_fd);
1732 2802
2803#if EV_USE_IOCP
2804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2805#endif
1733#if EV_USE_PORT 2806#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2808#endif
1736#if EV_USE_KQUEUE 2809#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2837 array_free (periodic, EMPTY);
1765#endif 2838#endif
1766#if EV_FORK_ENABLE 2839#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2840 array_free (fork, EMPTY);
1768#endif 2841#endif
2842#if EV_CLEANUP_ENABLE
2843 array_free (cleanup, EMPTY);
2844#endif
1769 array_free (prepare, EMPTY); 2845 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2846 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2847#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2848 array_free (async, EMPTY);
1773#endif 2849#endif
1774 2850
1775 backend = 0; 2851 backend = 0;
2852
2853#if EV_MULTIPLICITY
2854 if (ev_is_default_loop (EV_A))
2855#endif
2856 ev_default_loop_ptr = 0;
2857#if EV_MULTIPLICITY
2858 else
2859 ev_free (EV_A);
2860#endif
1776} 2861}
1777 2862
1778#if EV_USE_INOTIFY 2863#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2864inline_size void infy_fork (EV_P);
1780#endif 2865#endif
… …
1793#endif 2878#endif
1794#if EV_USE_INOTIFY 2879#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 2880 infy_fork (EV_A);
1796#endif 2881#endif
1797 2882
2883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 2884 if (ev_is_active (&pipe_w))
1799 { 2885 {
1800 /* this "locks" the handlers against writing to the pipe */ 2886 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2887
1807 ev_ref (EV_A); 2888 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2889 ev_io_stop (EV_A_ &pipe_w);
1809 2890
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 2891 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 2892 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 2893
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 2894 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 2895 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 2896 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 2897 }
2898#endif
1827 2899
1828 postfork = 0; 2900 postfork = 0;
1829} 2901}
1830 2902
1831#if EV_MULTIPLICITY 2903#if EV_MULTIPLICITY
1832 2904
1833struct ev_loop * 2905struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2906ev_loop_new (unsigned int flags) EV_THROW
1835{ 2907{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2908 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2909
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2910 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2911 loop_init (EV_A_ flags);
1840 2912
1841 if (ev_backend (EV_A)) 2913 if (ev_backend (EV_A))
1842 return EV_A; 2914 return EV_A;
1843 2915
2916 ev_free (EV_A);
1844 return 0; 2917 return 0;
1845} 2918}
1846 2919
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2920#endif /* multiplicity */
1860 2921
1861#if EV_VERIFY 2922#if EV_VERIFY
1862static void noinline 2923static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2924verify_watcher (EV_P_ W w)
1864{ 2925{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2926 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2927
1867 if (w->pending) 2928 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2929 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2930}
1870 2931
1871static void noinline 2932static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2933verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2934{
1874 int i; 2935 int i;
1875 2936
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2937 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2942
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2943 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2944 }
1884} 2945}
1885 2946
1886static void noinline 2947static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2948array_verify (EV_P_ W *ws, int cnt)
1888{ 2949{
1889 while (cnt--) 2950 while (cnt--)
1890 { 2951 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2952 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2954 }
1894} 2955}
1895#endif 2956#endif
1896 2957
1897#if EV_FEATURE_API 2958#if EV_FEATURE_API
1898void 2959void ecb_cold
1899ev_verify (EV_P) 2960ev_verify (EV_P) EV_THROW
1900{ 2961{
1901#if EV_VERIFY 2962#if EV_VERIFY
1902 int i; 2963 int i;
1903 WL w; 2964 WL w, w2;
1904 2965
1905 assert (activecnt >= -1); 2966 assert (activecnt >= -1);
1906 2967
1907 assert (fdchangemax >= fdchangecnt); 2968 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2969 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2970 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2971
1911 assert (anfdmax >= 0); 2972 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2973 for (i = 0; i < anfdmax; ++i)
2974 {
2975 int j = 0;
2976
1913 for (w = anfds [i].head; w; w = w->next) 2977 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2978 {
1915 verify_watcher (EV_A_ (W)w); 2979 verify_watcher (EV_A_ (W)w);
2980
2981 if (j++ & 1)
2982 {
2983 assert (("libev: io watcher list contains a loop", w != w2));
2984 w2 = w2->next;
2985 }
2986
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2987 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2988 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2989 }
2990 }
1919 2991
1920 assert (timermax >= timercnt); 2992 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2993 verify_heap (EV_A_ timers, timercnt);
1922 2994
1923#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 3010#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 3011 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 3012 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 3013#endif
1942 3014
3015#if EV_CLEANUP_ENABLE
3016 assert (cleanupmax >= cleanupcnt);
3017 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3018#endif
3019
1943#if EV_ASYNC_ENABLE 3020#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 3021 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 3022 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 3023#endif
1947 3024
… …
1964#endif 3041#endif
1965} 3042}
1966#endif 3043#endif
1967 3044
1968#if EV_MULTIPLICITY 3045#if EV_MULTIPLICITY
1969struct ev_loop * 3046struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 3047#else
1972int 3048int
3049#endif
1973ev_default_loop (unsigned int flags) 3050ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 3051{
1976 if (!ev_default_loop_ptr) 3052 if (!ev_default_loop_ptr)
1977 { 3053 {
1978#if EV_MULTIPLICITY 3054#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 3055 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 3074
1999 return ev_default_loop_ptr; 3075 return ev_default_loop_ptr;
2000} 3076}
2001 3077
2002void 3078void
2003ev_default_destroy (void) 3079ev_loop_fork (EV_P) EV_THROW
2004{ 3080{
2005#if EV_MULTIPLICITY 3081 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 3082}
2028 3083
2029/*****************************************************************************/ 3084/*****************************************************************************/
2030 3085
2031void 3086void
… …
2033{ 3088{
2034 EV_CB_INVOKE ((W)w, revents); 3089 EV_CB_INVOKE ((W)w, revents);
2035} 3090}
2036 3091
2037unsigned int 3092unsigned int
2038ev_pending_count (EV_P) 3093ev_pending_count (EV_P) EV_THROW
2039{ 3094{
2040 int pri; 3095 int pri;
2041 unsigned int count = 0; 3096 unsigned int count = 0;
2042 3097
2043 for (pri = NUMPRI; pri--; ) 3098 for (pri = NUMPRI; pri--; )
… …
2047} 3102}
2048 3103
2049void noinline 3104void noinline
2050ev_invoke_pending (EV_P) 3105ev_invoke_pending (EV_P)
2051{ 3106{
2052 int pri; 3107 pendingpri = NUMPRI;
2053 3108
2054 for (pri = NUMPRI; pri--; ) 3109 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3110 {
3111 --pendingpri;
3112
2055 while (pendingcnt [pri]) 3113 while (pendingcnt [pendingpri])
2056 { 3114 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3115 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 3116
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061
2062 p->w->pending = 0; 3117 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 3118 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 3119 EV_FREQUENT_CHECK;
2065 } 3120 }
3121 }
2066} 3122}
2067 3123
2068#if EV_IDLE_ENABLE 3124#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3125/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3126/* only when higher priorities are idle" logic */
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3183 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3184 }
2129} 3185}
2130 3186
2131#if EV_PERIODIC_ENABLE 3187#if EV_PERIODIC_ENABLE
3188
3189static void noinline
3190periodic_recalc (EV_P_ ev_periodic *w)
3191{
3192 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3193 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3194
3195 /* the above almost always errs on the low side */
3196 while (at <= ev_rt_now)
3197 {
3198 ev_tstamp nat = at + w->interval;
3199
3200 /* when resolution fails us, we use ev_rt_now */
3201 if (expect_false (nat == at))
3202 {
3203 at = ev_rt_now;
3204 break;
3205 }
3206
3207 at = nat;
3208 }
3209
3210 ev_at (w) = at;
3211}
3212
2132/* make periodics pending */ 3213/* make periodics pending */
2133inline_size void 3214inline_size void
2134periodics_reify (EV_P) 3215periodics_reify (EV_P)
2135{ 3216{
2136 EV_FREQUENT_CHECK; 3217 EV_FREQUENT_CHECK;
2137 3218
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3219 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3220 {
2140 int feed_count = 0;
2141
2142 do 3221 do
2143 { 3222 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3223 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3224
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3225 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3234 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3235 downheap (periodics, periodiccnt, HEAP0);
2157 } 3236 }
2158 else if (w->interval) 3237 else if (w->interval)
2159 { 3238 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3239 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 3240 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3241 downheap (periodics, periodiccnt, HEAP0);
2176 } 3242 }
2177 else 3243 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3244 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3252 }
2187} 3253}
2188 3254
2189/* simply recalculate all periodics */ 3255/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3256/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3257static void noinline ecb_cold
2192periodics_reschedule (EV_P) 3258periodics_reschedule (EV_P)
2193{ 3259{
2194 int i; 3260 int i;
2195 3261
2196 /* adjust periodics after time jump */ 3262 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3265 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3266
2201 if (w->reschedule_cb) 3267 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3268 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3269 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3270 periodic_recalc (EV_A_ w);
2205 3271
2206 ANHE_at_cache (periodics [i]); 3272 ANHE_at_cache (periodics [i]);
2207 } 3273 }
2208 3274
2209 reheap (periodics, periodiccnt); 3275 reheap (periodics, periodiccnt);
2210} 3276}
2211#endif 3277#endif
2212 3278
2213/* adjust all timers by a given offset */ 3279/* adjust all timers by a given offset */
2214static void noinline 3280static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3281timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3282{
2217 int i; 3283 int i;
2218 3284
2219 for (i = 0; i < timercnt; ++i) 3285 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3322 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3323 * in the unlikely event of having been preempted here.
2258 */ 3324 */
2259 for (i = 4; --i; ) 3325 for (i = 4; --i; )
2260 { 3326 {
3327 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3328 rtmn_diff = ev_rt_now - mn_now;
2262 3329
3330 diff = odiff - rtmn_diff;
3331
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3332 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 3333 return; /* all is well */
2265 3334
2266 ev_rt_now = ev_time (); 3335 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3336 mn_now = get_clock ();
2268 now_floor = mn_now; 3337 now_floor = mn_now;
… …
2290 3359
2291 mn_now = ev_rt_now; 3360 mn_now = ev_rt_now;
2292 } 3361 }
2293} 3362}
2294 3363
2295void 3364int
2296ev_loop (EV_P_ int flags) 3365ev_run (EV_P_ int flags)
2297{ 3366{
2298#if EV_FEATURE_API 3367#if EV_FEATURE_API
2299 ++loop_depth; 3368 ++loop_depth;
2300#endif 3369#endif
2301 3370
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3371 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3372
2304 loop_done = EVUNLOOP_CANCEL; 3373 loop_done = EVBREAK_CANCEL;
2305 3374
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3375 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3376
2308 do 3377 do
2309 { 3378 {
… …
2352 /* calculate blocking time */ 3421 /* calculate blocking time */
2353 { 3422 {
2354 ev_tstamp waittime = 0.; 3423 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3424 ev_tstamp sleeptime = 0.;
2356 3425
3426 /* remember old timestamp for io_blocktime calculation */
3427 ev_tstamp prev_mn_now = mn_now;
3428
3429 /* update time to cancel out callback processing overhead */
3430 time_update (EV_A_ 1e100);
3431
3432 /* from now on, we want a pipe-wake-up */
3433 pipe_write_wanted = 1;
3434
3435 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3436
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3437 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3438 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3439 waittime = MAX_BLOCKTIME;
2366 3440
2367 if (timercnt) 3441 if (timercnt)
2368 { 3442 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3443 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3444 if (waittime > to) waittime = to;
2371 } 3445 }
2372 3446
2373#if EV_PERIODIC_ENABLE 3447#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3448 if (periodiccnt)
2375 { 3449 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3450 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3451 if (waittime > to) waittime = to;
2378 } 3452 }
2379#endif 3453#endif
2380 3454
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3455 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3456 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3457 waittime = timeout_blocktime;
3458
3459 /* at this point, we NEED to wait, so we have to ensure */
3460 /* to pass a minimum nonzero value to the backend */
3461 if (expect_false (waittime < backend_mintime))
3462 waittime = backend_mintime;
2384 3463
2385 /* extra check because io_blocktime is commonly 0 */ 3464 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3465 if (expect_false (io_blocktime))
2387 { 3466 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3467 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3468
2390 if (sleeptime > waittime - backend_fudge) 3469 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3470 sleeptime = waittime - backend_mintime;
2392 3471
2393 if (expect_true (sleeptime > 0.)) 3472 if (expect_true (sleeptime > 0.))
2394 { 3473 {
2395 ev_sleep (sleeptime); 3474 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3475 waittime -= sleeptime;
… …
2399 } 3478 }
2400 3479
2401#if EV_FEATURE_API 3480#if EV_FEATURE_API
2402 ++loop_count; 3481 ++loop_count;
2403#endif 3482#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3483 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3484 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3485 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3486
3487 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3488
3489 ECB_MEMORY_FENCE_ACQUIRE;
3490 if (pipe_write_skipped)
3491 {
3492 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3493 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3494 }
3495
2407 3496
2408 /* update ev_rt_now, do magic */ 3497 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3498 time_update (EV_A_ waittime + sleeptime);
2410 } 3499 }
2411 3500
… …
2429 EV_INVOKE_PENDING; 3518 EV_INVOKE_PENDING;
2430 } 3519 }
2431 while (expect_true ( 3520 while (expect_true (
2432 activecnt 3521 activecnt
2433 && !loop_done 3522 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3523 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3524 ));
2436 3525
2437 if (loop_done == EVUNLOOP_ONE) 3526 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3527 loop_done = EVBREAK_CANCEL;
2439 3528
2440#if EV_FEATURE_API 3529#if EV_FEATURE_API
2441 --loop_depth; 3530 --loop_depth;
2442#endif 3531#endif
3532
3533 return activecnt;
2443} 3534}
2444 3535
2445void 3536void
2446ev_unloop (EV_P_ int how) 3537ev_break (EV_P_ int how) EV_THROW
2447{ 3538{
2448 loop_done = how; 3539 loop_done = how;
2449} 3540}
2450 3541
2451void 3542void
2452ev_ref (EV_P) 3543ev_ref (EV_P) EV_THROW
2453{ 3544{
2454 ++activecnt; 3545 ++activecnt;
2455} 3546}
2456 3547
2457void 3548void
2458ev_unref (EV_P) 3549ev_unref (EV_P) EV_THROW
2459{ 3550{
2460 --activecnt; 3551 --activecnt;
2461} 3552}
2462 3553
2463void 3554void
2464ev_now_update (EV_P) 3555ev_now_update (EV_P) EV_THROW
2465{ 3556{
2466 time_update (EV_A_ 1e100); 3557 time_update (EV_A_ 1e100);
2467} 3558}
2468 3559
2469void 3560void
2470ev_suspend (EV_P) 3561ev_suspend (EV_P) EV_THROW
2471{ 3562{
2472 ev_now_update (EV_A); 3563 ev_now_update (EV_A);
2473} 3564}
2474 3565
2475void 3566void
2476ev_resume (EV_P) 3567ev_resume (EV_P) EV_THROW
2477{ 3568{
2478 ev_tstamp mn_prev = mn_now; 3569 ev_tstamp mn_prev = mn_now;
2479 3570
2480 ev_now_update (EV_A); 3571 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3572 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3611 w->pending = 0;
2521 } 3612 }
2522} 3613}
2523 3614
2524int 3615int
2525ev_clear_pending (EV_P_ void *w) 3616ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3617{
2527 W w_ = (W)w; 3618 W w_ = (W)w;
2528 int pending = w_->pending; 3619 int pending = w_->pending;
2529 3620
2530 if (expect_true (pending)) 3621 if (expect_true (pending))
… …
2563} 3654}
2564 3655
2565/*****************************************************************************/ 3656/*****************************************************************************/
2566 3657
2567void noinline 3658void noinline
2568ev_io_start (EV_P_ ev_io *w) 3659ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3660{
2570 int fd = w->fd; 3661 int fd = w->fd;
2571 3662
2572 if (expect_false (ev_is_active (w))) 3663 if (expect_false (ev_is_active (w)))
2573 return; 3664 return;
… …
2579 3670
2580 ev_start (EV_A_ (W)w, 1); 3671 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3672 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3673 wlist_add (&anfds[fd].head, (WL)w);
2583 3674
3675 /* common bug, apparently */
3676 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3677
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3678 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3679 w->events &= ~EV__IOFDSET;
2586 3680
2587 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
2588} 3682}
2589 3683
2590void noinline 3684void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3685ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3686{
2593 clear_pending (EV_A_ (W)w); 3687 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3688 if (expect_false (!ev_is_active (w)))
2595 return; 3689 return;
2596 3690
… …
2599 EV_FREQUENT_CHECK; 3693 EV_FREQUENT_CHECK;
2600 3694
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3695 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3696 ev_stop (EV_A_ (W)w);
2603 3697
2604 fd_change (EV_A_ w->fd, 1); 3698 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3699
2606 EV_FREQUENT_CHECK; 3700 EV_FREQUENT_CHECK;
2607} 3701}
2608 3702
2609void noinline 3703void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3704ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3705{
2612 if (expect_false (ev_is_active (w))) 3706 if (expect_false (ev_is_active (w)))
2613 return; 3707 return;
2614 3708
2615 ev_at (w) += mn_now; 3709 ev_at (w) += mn_now;
… …
2629 3723
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3724 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3725}
2632 3726
2633void noinline 3727void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3728ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3729{
2636 clear_pending (EV_A_ (W)w); 3730 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3731 if (expect_false (!ev_is_active (w)))
2638 return; 3732 return;
2639 3733
… …
2659 3753
2660 EV_FREQUENT_CHECK; 3754 EV_FREQUENT_CHECK;
2661} 3755}
2662 3756
2663void noinline 3757void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3758ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3759{
2666 EV_FREQUENT_CHECK; 3760 EV_FREQUENT_CHECK;
3761
3762 clear_pending (EV_A_ (W)w);
2667 3763
2668 if (ev_is_active (w)) 3764 if (ev_is_active (w))
2669 { 3765 {
2670 if (w->repeat) 3766 if (w->repeat)
2671 { 3767 {
… …
2684 3780
2685 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
2686} 3782}
2687 3783
2688ev_tstamp 3784ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3785ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3786{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3787 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3788}
2693 3789
2694#if EV_PERIODIC_ENABLE 3790#if EV_PERIODIC_ENABLE
2695void noinline 3791void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3792ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3793{
2698 if (expect_false (ev_is_active (w))) 3794 if (expect_false (ev_is_active (w)))
2699 return; 3795 return;
2700 3796
2701 if (w->reschedule_cb) 3797 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3798 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3799 else if (w->interval)
2704 { 3800 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3801 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3802 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3803 }
2709 else 3804 else
2710 ev_at (w) = w->offset; 3805 ev_at (w) = w->offset;
2711 3806
2712 EV_FREQUENT_CHECK; 3807 EV_FREQUENT_CHECK;
… …
2722 3817
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3818 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3819}
2725 3820
2726void noinline 3821void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3822ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3823{
2729 clear_pending (EV_A_ (W)w); 3824 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3825 if (expect_false (!ev_is_active (w)))
2731 return; 3826 return;
2732 3827
… …
2750 3845
2751 EV_FREQUENT_CHECK; 3846 EV_FREQUENT_CHECK;
2752} 3847}
2753 3848
2754void noinline 3849void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3850ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3851{
2757 /* TODO: use adjustheap and recalculation */ 3852 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3853 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3854 ev_periodic_start (EV_A_ w);
2760} 3855}
… …
2765#endif 3860#endif
2766 3861
2767#if EV_SIGNAL_ENABLE 3862#if EV_SIGNAL_ENABLE
2768 3863
2769void noinline 3864void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3865ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3866{
2772 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
2773 return; 3868 return;
2774 3869
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3870 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2777#if EV_MULTIPLICITY 3872#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 3873 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3874 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 3875
2781 signals [w->signum - 1].loop = EV_A; 3876 signals [w->signum - 1].loop = EV_A;
3877 ECB_MEMORY_FENCE_RELEASE;
2782#endif 3878#endif
2783 3879
2784 EV_FREQUENT_CHECK; 3880 EV_FREQUENT_CHECK;
2785 3881
2786#if EV_USE_SIGNALFD 3882#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 3929 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3930 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3931 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3932 sigaction (w->signum, &sa, 0);
2837 3933
3934 if (origflags & EVFLAG_NOSIGMASK)
3935 {
2838 sigemptyset (&sa.sa_mask); 3936 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3937 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3938 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3939 }
2841#endif 3940#endif
2842 } 3941 }
2843 3942
2844 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2845} 3944}
2846 3945
2847void noinline 3946void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3947ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3948{
2850 clear_pending (EV_A_ (W)w); 3949 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3950 if (expect_false (!ev_is_active (w)))
2852 return; 3951 return;
2853 3952
… …
2884#endif 3983#endif
2885 3984
2886#if EV_CHILD_ENABLE 3985#if EV_CHILD_ENABLE
2887 3986
2888void 3987void
2889ev_child_start (EV_P_ ev_child *w) 3988ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3989{
2891#if EV_MULTIPLICITY 3990#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3991 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3992#endif
2894 if (expect_false (ev_is_active (w))) 3993 if (expect_false (ev_is_active (w)))
… …
2901 4000
2902 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
2903} 4002}
2904 4003
2905void 4004void
2906ev_child_stop (EV_P_ ev_child *w) 4005ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 4006{
2908 clear_pending (EV_A_ (W)w); 4007 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 4008 if (expect_false (!ev_is_active (w)))
2910 return; 4009 return;
2911 4010
… …
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4037# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 4038
2940static void noinline 4039static void noinline
2941infy_add (EV_P_ ev_stat *w) 4040infy_add (EV_P_ ev_stat *w)
2942{ 4041{
2943 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); 4042 w->wd = inotify_add_watch (fs_fd, w->path,
4043 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4044 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4045 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 4046
2945 if (w->wd >= 0) 4047 if (w->wd >= 0)
2946 { 4048 {
2947 struct statfs sfs; 4049 struct statfs sfs;
2948 4050
… …
2952 4054
2953 if (!fs_2625) 4055 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4056 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 4057 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 4058 && (sfs.f_type == 0x1373 /* devfs */
4059 || sfs.f_type == 0x4006 /* fat */
4060 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 4061 || sfs.f_type == 0xEF53 /* ext2/3 */
4062 || sfs.f_type == 0x72b6 /* jffs2 */
4063 || sfs.f_type == 0x858458f6 /* ramfs */
4064 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 4065 || sfs.f_type == 0x3153464a /* jfs */
4066 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 4067 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 4068 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 4069 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4070 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 4071 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4072 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 4073 }
… …
2986 if (!pend || pend == path) 4094 if (!pend || pend == path)
2987 break; 4095 break;
2988 4096
2989 *pend = 0; 4097 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 4098 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 4099 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4100 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 4101 }
2994 } 4102 }
2995 4103
2996 if (w->wd >= 0) 4104 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4171 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4172 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4173 }
3066} 4174}
3067 4175
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 4176inline_size void ecb_cold
3101ev_check_2625 (EV_P) 4177ev_check_2625 (EV_P)
3102{ 4178{
3103 /* kernels < 2.6.25 are borked 4179 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4180 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4181 */
… …
3110} 4186}
3111 4187
3112inline_size int 4188inline_size int
3113infy_newfd (void) 4189infy_newfd (void)
3114{ 4190{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4191#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4192 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4193 if (fd >= 0)
3118 return fd; 4194 return fd;
3119#endif 4195#endif
3120 return inotify_init (); 4196 return inotify_init ();
… …
3195#else 4271#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4272# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4273#endif
3198 4274
3199void 4275void
3200ev_stat_stat (EV_P_ ev_stat *w) 4276ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 4277{
3202 if (lstat (w->path, &w->attr) < 0) 4278 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4279 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4280 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4281 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4320 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4321 }
3246} 4322}
3247 4323
3248void 4324void
3249ev_stat_start (EV_P_ ev_stat *w) 4325ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 4326{
3251 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3252 return; 4328 return;
3253 4329
3254 ev_stat_stat (EV_A_ w); 4330 ev_stat_stat (EV_A_ w);
… …
3275 4351
3276 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
3277} 4353}
3278 4354
3279void 4355void
3280ev_stat_stop (EV_P_ ev_stat *w) 4356ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 4357{
3282 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
3284 return; 4360 return;
3285 4361
… …
3301} 4377}
3302#endif 4378#endif
3303 4379
3304#if EV_IDLE_ENABLE 4380#if EV_IDLE_ENABLE
3305void 4381void
3306ev_idle_start (EV_P_ ev_idle *w) 4382ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 4383{
3308 if (expect_false (ev_is_active (w))) 4384 if (expect_false (ev_is_active (w)))
3309 return; 4385 return;
3310 4386
3311 pri_adjust (EV_A_ (W)w); 4387 pri_adjust (EV_A_ (W)w);
… …
3324 4400
3325 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3326} 4402}
3327 4403
3328void 4404void
3329ev_idle_stop (EV_P_ ev_idle *w) 4405ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 4406{
3331 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3333 return; 4409 return;
3334 4410
… …
3348} 4424}
3349#endif 4425#endif
3350 4426
3351#if EV_PREPARE_ENABLE 4427#if EV_PREPARE_ENABLE
3352void 4428void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4429ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4430{
3355 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3356 return; 4432 return;
3357 4433
3358 EV_FREQUENT_CHECK; 4434 EV_FREQUENT_CHECK;
… …
3363 4439
3364 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
3365} 4441}
3366 4442
3367void 4443void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4444ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4445{
3370 clear_pending (EV_A_ (W)w); 4446 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4447 if (expect_false (!ev_is_active (w)))
3372 return; 4448 return;
3373 4449
… …
3386} 4462}
3387#endif 4463#endif
3388 4464
3389#if EV_CHECK_ENABLE 4465#if EV_CHECK_ENABLE
3390void 4466void
3391ev_check_start (EV_P_ ev_check *w) 4467ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4468{
3393 if (expect_false (ev_is_active (w))) 4469 if (expect_false (ev_is_active (w)))
3394 return; 4470 return;
3395 4471
3396 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
… …
3401 4477
3402 EV_FREQUENT_CHECK; 4478 EV_FREQUENT_CHECK;
3403} 4479}
3404 4480
3405void 4481void
3406ev_check_stop (EV_P_ ev_check *w) 4482ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4483{
3408 clear_pending (EV_A_ (W)w); 4484 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4485 if (expect_false (!ev_is_active (w)))
3410 return; 4486 return;
3411 4487
… …
3424} 4500}
3425#endif 4501#endif
3426 4502
3427#if EV_EMBED_ENABLE 4503#if EV_EMBED_ENABLE
3428void noinline 4504void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4505ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4506{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4507 ev_run (w->other, EVRUN_NOWAIT);
3432} 4508}
3433 4509
3434static void 4510static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4511embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4512{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4513 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4514
3439 if (ev_cb (w)) 4515 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4516 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4517 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4518 ev_run (w->other, EVRUN_NOWAIT);
3443} 4519}
3444 4520
3445static void 4521static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4522embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4523{
… …
3451 EV_P = w->other; 4527 EV_P = w->other;
3452 4528
3453 while (fdchangecnt) 4529 while (fdchangecnt)
3454 { 4530 {
3455 fd_reify (EV_A); 4531 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4532 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4533 }
3458 } 4534 }
3459} 4535}
3460 4536
3461static void 4537static void
… …
3467 4543
3468 { 4544 {
3469 EV_P = w->other; 4545 EV_P = w->other;
3470 4546
3471 ev_loop_fork (EV_A); 4547 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4548 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4549 }
3474 4550
3475 ev_embed_start (EV_A_ w); 4551 ev_embed_start (EV_A_ w);
3476} 4552}
3477 4553
… …
3482 ev_idle_stop (EV_A_ idle); 4558 ev_idle_stop (EV_A_ idle);
3483} 4559}
3484#endif 4560#endif
3485 4561
3486void 4562void
3487ev_embed_start (EV_P_ ev_embed *w) 4563ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4564{
3489 if (expect_false (ev_is_active (w))) 4565 if (expect_false (ev_is_active (w)))
3490 return; 4566 return;
3491 4567
3492 { 4568 {
… …
3513 4589
3514 EV_FREQUENT_CHECK; 4590 EV_FREQUENT_CHECK;
3515} 4591}
3516 4592
3517void 4593void
3518ev_embed_stop (EV_P_ ev_embed *w) 4594ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4595{
3520 clear_pending (EV_A_ (W)w); 4596 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4597 if (expect_false (!ev_is_active (w)))
3522 return; 4598 return;
3523 4599
… …
3533} 4609}
3534#endif 4610#endif
3535 4611
3536#if EV_FORK_ENABLE 4612#if EV_FORK_ENABLE
3537void 4613void
3538ev_fork_start (EV_P_ ev_fork *w) 4614ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4615{
3540 if (expect_false (ev_is_active (w))) 4616 if (expect_false (ev_is_active (w)))
3541 return; 4617 return;
3542 4618
3543 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
… …
3548 4624
3549 EV_FREQUENT_CHECK; 4625 EV_FREQUENT_CHECK;
3550} 4626}
3551 4627
3552void 4628void
3553ev_fork_stop (EV_P_ ev_fork *w) 4629ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4630{
3555 clear_pending (EV_A_ (W)w); 4631 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4632 if (expect_false (!ev_is_active (w)))
3557 return; 4633 return;
3558 4634
… …
3569 4645
3570 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3571} 4647}
3572#endif 4648#endif
3573 4649
4650#if EV_CLEANUP_ENABLE
4651void
4652ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4653{
4654 if (expect_false (ev_is_active (w)))
4655 return;
4656
4657 EV_FREQUENT_CHECK;
4658
4659 ev_start (EV_A_ (W)w, ++cleanupcnt);
4660 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4661 cleanups [cleanupcnt - 1] = w;
4662
4663 /* cleanup watchers should never keep a refcount on the loop */
4664 ev_unref (EV_A);
4665 EV_FREQUENT_CHECK;
4666}
4667
4668void
4669ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4670{
4671 clear_pending (EV_A_ (W)w);
4672 if (expect_false (!ev_is_active (w)))
4673 return;
4674
4675 EV_FREQUENT_CHECK;
4676 ev_ref (EV_A);
4677
4678 {
4679 int active = ev_active (w);
4680
4681 cleanups [active - 1] = cleanups [--cleanupcnt];
4682 ev_active (cleanups [active - 1]) = active;
4683 }
4684
4685 ev_stop (EV_A_ (W)w);
4686
4687 EV_FREQUENT_CHECK;
4688}
4689#endif
4690
3574#if EV_ASYNC_ENABLE 4691#if EV_ASYNC_ENABLE
3575void 4692void
3576ev_async_start (EV_P_ ev_async *w) 4693ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4694{
3578 if (expect_false (ev_is_active (w))) 4695 if (expect_false (ev_is_active (w)))
3579 return; 4696 return;
4697
4698 w->sent = 0;
3580 4699
3581 evpipe_init (EV_A); 4700 evpipe_init (EV_A);
3582 4701
3583 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3584 4703
… …
3588 4707
3589 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3590} 4709}
3591 4710
3592void 4711void
3593ev_async_stop (EV_P_ ev_async *w) 4712ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4713{
3595 clear_pending (EV_A_ (W)w); 4714 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4715 if (expect_false (!ev_is_active (w)))
3597 return; 4716 return;
3598 4717
… …
3609 4728
3610 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3611} 4730}
3612 4731
3613void 4732void
3614ev_async_send (EV_P_ ev_async *w) 4733ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4734{
3616 w->sent = 1; 4735 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4736 evpipe_write (EV_A_ &async_pending);
3618} 4737}
3619#endif 4738#endif
… …
3656 4775
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4776 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4777}
3659 4778
3660void 4779void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4780ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4781{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4782 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4783
3665 if (expect_false (!once)) 4784 if (expect_false (!once))
3666 { 4785 {
… …
3687} 4806}
3688 4807
3689/*****************************************************************************/ 4808/*****************************************************************************/
3690 4809
3691#if EV_WALK_ENABLE 4810#if EV_WALK_ENABLE
3692void 4811void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4812ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4813{
3695 int i, j; 4814 int i, j;
3696 ev_watcher_list *wl, *wn; 4815 ev_watcher_list *wl, *wn;
3697 4816
3698 if (types & (EV_IO | EV_EMBED)) 4817 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4860 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4861#endif
3743 4862
3744#if EV_IDLE_ENABLE 4863#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4864 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4865 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4866 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4867 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4868#endif
3750 4869
3751#if EV_FORK_ENABLE 4870#if EV_FORK_ENABLE
… …
3804 4923
3805#if EV_MULTIPLICITY 4924#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4925 #include "ev_wrap.h"
3807#endif 4926#endif
3808 4927
3809#ifdef __cplusplus
3810}
3811#endif
3812

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