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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 1.466 by root, Tue Mar 25 19:26:42 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 247#endif
235/* but consider reporting it, too! :) */ 248
236# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
237#endif 251#endif
238 252
239#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 256# else
243# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
244# endif 258# endif
245#endif 259#endif
246 260
247#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 264# else
251# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
252# endif 266# endif
253#endif 267#endif
… …
340 354
341#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 357#endif
344 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 378# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
353# else 383# else
… …
356# endif 386# endif
357#endif 387#endif
358 388
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 390
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
370#endif 394#endif
371 395
… …
378# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
380#endif 404#endif
381 405
382#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 409# include <sys/select.h>
385# endif 410# endif
386#endif 411#endif
387 412
388#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 414# include <sys/statfs.h>
391# include <sys/inotify.h> 415# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
396# endif 420# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 421#endif
402 422
403#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 425# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
412# else 432# else
413# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
414# endif 434# endif
415# endif 435# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 437#endif
424 438
425#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 441# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
434# else 448# else
435# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
436# endif 450# endif
437# endif 451# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 453
443struct signalfd_siginfo 454struct signalfd_siginfo
444{ 455{
445 uint32_t ssi_signo; 456 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
447}; 458};
448# ifdef __cplusplus
449}
450# endif 459#endif
451#endif
452
453 460
454/**/ 461/**/
455 462
456#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 465#else
459# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
460#endif 467#endif
461 468
462/* 469/*
463 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 472 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 475
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 526 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
478#else 542#else
479# define expect(expr,value) (expr) 543 #include <inttypes.h>
480# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
482# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
483# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
484#endif 557 #endif
558#endif
485 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_CPP (__cplusplus+0)
576#define ECB_CPP11 (__cplusplus >= 201103L)
577
578#if ECB_CPP
579 #define ECB_C 0
580 #define ECB_STDC_VERSION 0
581#else
582 #define ECB_C 1
583 #define ECB_STDC_VERSION __STDC_VERSION__
584#endif
585
586#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
587#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
588
589#if ECB_CPP
590 #define ECB_EXTERN_C extern "C"
591 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
592 #define ECB_EXTERN_C_END }
593#else
594 #define ECB_EXTERN_C extern
595 #define ECB_EXTERN_C_BEG
596 #define ECB_EXTERN_C_END
597#endif
598
599/*****************************************************************************/
600
601/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
602/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
603
604#if ECB_NO_THREADS
605 #define ECB_NO_SMP 1
606#endif
607
608#if ECB_NO_SMP
609 #define ECB_MEMORY_FENCE do { } while (0)
610#endif
611
612#ifndef ECB_MEMORY_FENCE
613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
614 #if __i386 || __i386__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
620 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
630 #elif __aarch64__
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
632 #elif (__sparc || __sparc__) && !__sparcv8
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
634 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
635 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
636 #elif defined __s390__ || defined __s390x__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
638 #elif defined __mips__
639 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
640 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
642 #elif defined __alpha__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
644 #elif defined __hppa__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
647 #elif defined __ia64__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
649 #elif defined __m68k__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
651 #elif defined __m88k__
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
653 #elif defined __sh__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
655 #endif
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_GCC_VERSION(4,7)
661 /* see comment below (stdatomic.h) about the C11 memory model. */
662 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
663 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
664 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
665
666 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
667 * without risking compile time errors with other compilers. We *could*
668 * define our own ecb_clang_has_feature, but I just can't be bothered to work
669 * around this shit time and again.
670 * #elif defined __clang && __has_feature (cxx_atomic)
671 * // see comment below (stdatomic.h) about the C11 memory model.
672 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
673 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
674 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
675 */
676
677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
678 #define ECB_MEMORY_FENCE __sync_synchronize ()
679 #elif _MSC_VER >= 1500 /* VC++ 2008 */
680 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
681 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
682 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
683 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
684 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
685 #elif _MSC_VER >= 1400 /* VC++ 2005 */
686 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
687 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
688 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
689 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
690 #elif defined _WIN32
691 #include <WinNT.h>
692 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
693 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
694 #include <mbarrier.h>
695 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
696 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
697 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
698 #elif __xlC__
699 #define ECB_MEMORY_FENCE __sync ()
700 #endif
701#endif
702
703#ifndef ECB_MEMORY_FENCE
704 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
705 /* we assume that these memory fences work on all variables/all memory accesses, */
706 /* not just C11 atomics and atomic accesses */
707 #include <stdatomic.h>
708 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
709 /* any fence other than seq_cst, which isn't very efficient for us. */
710 /* Why that is, we don't know - either the C11 memory model is quite useless */
711 /* for most usages, or gcc and clang have a bug */
712 /* I *currently* lean towards the latter, and inefficiently implement */
713 /* all three of ecb's fences as a seq_cst fence */
714 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
715 /* for all __atomic_thread_fence's except seq_cst */
716 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
717 #endif
718#endif
719
720#ifndef ECB_MEMORY_FENCE
721 #if !ECB_AVOID_PTHREADS
722 /*
723 * if you get undefined symbol references to pthread_mutex_lock,
724 * or failure to find pthread.h, then you should implement
725 * the ECB_MEMORY_FENCE operations for your cpu/compiler
726 * OR provide pthread.h and link against the posix thread library
727 * of your system.
728 */
729 #include <pthread.h>
730 #define ECB_NEEDS_PTHREADS 1
731 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
732
733 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
734 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
735 #endif
736#endif
737
738#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
739 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
740#endif
741
742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
744#endif
745
746/*****************************************************************************/
747
748#if __cplusplus
749 #define ecb_inline static inline
750#elif ECB_GCC_VERSION(2,5)
751 #define ecb_inline static __inline__
752#elif ECB_C99
753 #define ecb_inline static inline
754#else
755 #define ecb_inline static
756#endif
757
758#if ECB_GCC_VERSION(3,3)
759 #define ecb_restrict __restrict__
760#elif ECB_C99
761 #define ecb_restrict restrict
762#else
763 #define ecb_restrict
764#endif
765
766typedef int ecb_bool;
767
768#define ECB_CONCAT_(a, b) a ## b
769#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
770#define ECB_STRINGIFY_(a) # a
771#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
772
773#define ecb_function_ ecb_inline
774
775#if ECB_GCC_VERSION(3,1)
776 #define ecb_attribute(attrlist) __attribute__(attrlist)
777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
780#else
781 #define ecb_attribute(attrlist)
782
783 /* possible C11 impl for integral types
784 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
785 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
786
787 #define ecb_is_constant(expr) 0
788 #define ecb_expect(expr,value) (expr)
789 #define ecb_prefetch(addr,rw,locality)
790#endif
791
792/* no emulation for ecb_decltype */
793#if ECB_GCC_VERSION(4,5)
794 #define ecb_decltype(x) __decltype(x)
795#elif ECB_GCC_VERSION(3,0)
796 #define ecb_decltype(x) __typeof(x)
797#endif
798
799#define ecb_noinline ecb_attribute ((__noinline__))
800#define ecb_unused ecb_attribute ((__unused__))
801#define ecb_const ecb_attribute ((__const__))
802#define ecb_pure ecb_attribute ((__pure__))
803
804#if ECB_C11
805 #define ecb_noreturn _Noreturn
806#else
807 #define ecb_noreturn ecb_attribute ((__noreturn__))
808#endif
809
810#if ECB_GCC_VERSION(4,3)
811 #define ecb_artificial ecb_attribute ((__artificial__))
812 #define ecb_hot ecb_attribute ((__hot__))
813 #define ecb_cold ecb_attribute ((__cold__))
814#else
815 #define ecb_artificial
816 #define ecb_hot
817 #define ecb_cold
818#endif
819
820/* put around conditional expressions if you are very sure that the */
821/* expression is mostly true or mostly false. note that these return */
822/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 823#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 824#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
825/* for compatibility to the rest of the world */
826#define ecb_likely(expr) ecb_expect_true (expr)
827#define ecb_unlikely(expr) ecb_expect_false (expr)
828
829/* count trailing zero bits and count # of one bits */
830#if ECB_GCC_VERSION(3,4)
831 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
832 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
833 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
834 #define ecb_ctz32(x) __builtin_ctz (x)
835 #define ecb_ctz64(x) __builtin_ctzll (x)
836 #define ecb_popcount32(x) __builtin_popcount (x)
837 /* no popcountll */
838#else
839 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
840 ecb_function_ int
841 ecb_ctz32 (uint32_t x)
842 {
843 int r = 0;
844
845 x &= ~x + 1; /* this isolates the lowest bit */
846
847#if ECB_branchless_on_i386
848 r += !!(x & 0xaaaaaaaa) << 0;
849 r += !!(x & 0xcccccccc) << 1;
850 r += !!(x & 0xf0f0f0f0) << 2;
851 r += !!(x & 0xff00ff00) << 3;
852 r += !!(x & 0xffff0000) << 4;
853#else
854 if (x & 0xaaaaaaaa) r += 1;
855 if (x & 0xcccccccc) r += 2;
856 if (x & 0xf0f0f0f0) r += 4;
857 if (x & 0xff00ff00) r += 8;
858 if (x & 0xffff0000) r += 16;
859#endif
860
861 return r;
862 }
863
864 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
865 ecb_function_ int
866 ecb_ctz64 (uint64_t x)
867 {
868 int shift = x & 0xffffffffU ? 0 : 32;
869 return ecb_ctz32 (x >> shift) + shift;
870 }
871
872 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
873 ecb_function_ int
874 ecb_popcount32 (uint32_t x)
875 {
876 x -= (x >> 1) & 0x55555555;
877 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
878 x = ((x >> 4) + x) & 0x0f0f0f0f;
879 x *= 0x01010101;
880
881 return x >> 24;
882 }
883
884 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
885 ecb_function_ int ecb_ld32 (uint32_t x)
886 {
887 int r = 0;
888
889 if (x >> 16) { x >>= 16; r += 16; }
890 if (x >> 8) { x >>= 8; r += 8; }
891 if (x >> 4) { x >>= 4; r += 4; }
892 if (x >> 2) { x >>= 2; r += 2; }
893 if (x >> 1) { r += 1; }
894
895 return r;
896 }
897
898 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
899 ecb_function_ int ecb_ld64 (uint64_t x)
900 {
901 int r = 0;
902
903 if (x >> 32) { x >>= 32; r += 32; }
904
905 return r + ecb_ld32 (x);
906 }
907#endif
908
909ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
910ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
911ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
912ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
913
914ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
915ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
916{
917 return ( (x * 0x0802U & 0x22110U)
918 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
919}
920
921ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
922ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
923{
924 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
925 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
926 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
927 x = ( x >> 8 ) | ( x << 8);
928
929 return x;
930}
931
932ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
933ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
934{
935 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
936 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
937 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
938 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
939 x = ( x >> 16 ) | ( x << 16);
940
941 return x;
942}
943
944/* popcount64 is only available on 64 bit cpus as gcc builtin */
945/* so for this version we are lazy */
946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
947ecb_function_ int
948ecb_popcount64 (uint64_t x)
949{
950 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
951}
952
953ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
954ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
955ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
956ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
957ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
958ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
959ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
960ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
961
962ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
963ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
964ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
965ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
966ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
967ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
968ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
969ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
970
971#if ECB_GCC_VERSION(4,3)
972 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
973 #define ecb_bswap32(x) __builtin_bswap32 (x)
974 #define ecb_bswap64(x) __builtin_bswap64 (x)
975#else
976 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
977 ecb_function_ uint16_t
978 ecb_bswap16 (uint16_t x)
979 {
980 return ecb_rotl16 (x, 8);
981 }
982
983 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
984 ecb_function_ uint32_t
985 ecb_bswap32 (uint32_t x)
986 {
987 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
988 }
989
990 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
991 ecb_function_ uint64_t
992 ecb_bswap64 (uint64_t x)
993 {
994 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
995 }
996#endif
997
998#if ECB_GCC_VERSION(4,5)
999 #define ecb_unreachable() __builtin_unreachable ()
1000#else
1001 /* this seems to work fine, but gcc always emits a warning for it :/ */
1002 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1003 ecb_inline void ecb_unreachable (void) { }
1004#endif
1005
1006/* try to tell the compiler that some condition is definitely true */
1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1008
1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1010ecb_inline unsigned char
1011ecb_byteorder_helper (void)
1012{
1013 /* the union code still generates code under pressure in gcc, */
1014 /* but less than using pointers, and always seems to */
1015 /* successfully return a constant. */
1016 /* the reason why we have this horrible preprocessor mess */
1017 /* is to avoid it in all cases, at least on common architectures */
1018 /* or when using a recent enough gcc version (>= 4.6) */
1019#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1020 return 0x44;
1021#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1022 return 0x44;
1023#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1024 return 0x11;
1025#else
1026 union
1027 {
1028 uint32_t i;
1029 uint8_t c;
1030 } u = { 0x11223344 };
1031 return u.c;
1032#endif
1033}
1034
1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1036ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1038ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1039
1040#if ECB_GCC_VERSION(3,0) || ECB_C99
1041 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1042#else
1043 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1044#endif
1045
1046#if __cplusplus
1047 template<typename T>
1048 static inline T ecb_div_rd (T val, T div)
1049 {
1050 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1051 }
1052 template<typename T>
1053 static inline T ecb_div_ru (T val, T div)
1054 {
1055 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1056 }
1057#else
1058 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1059 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1060#endif
1061
1062#if ecb_cplusplus_does_not_suck
1063 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1064 template<typename T, int N>
1065 static inline int ecb_array_length (const T (&arr)[N])
1066 {
1067 return N;
1068 }
1069#else
1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1071#endif
1072
1073/*******************************************************************************/
1074/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1075
1076/* basically, everything uses "ieee pure-endian" floating point numbers */
1077/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1078#if 0 \
1079 || __i386 || __i386__ \
1080 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1081 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1082 || defined __s390__ || defined __s390x__ \
1083 || defined __mips__ \
1084 || defined __alpha__ \
1085 || defined __hppa__ \
1086 || defined __ia64__ \
1087 || defined __m68k__ \
1088 || defined __m88k__ \
1089 || defined __sh__ \
1090 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1091 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1092 || defined __aarch64__
1093 #define ECB_STDFP 1
1094 #include <string.h> /* for memcpy */
1095#else
1096 #define ECB_STDFP 0
1097#endif
1098
1099#ifndef ECB_NO_LIBM
1100
1101 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1102
1103 /* only the oldest of old doesn't have this one. solaris. */
1104 #ifdef INFINITY
1105 #define ECB_INFINITY INFINITY
1106 #else
1107 #define ECB_INFINITY HUGE_VAL
1108 #endif
1109
1110 #ifdef NAN
1111 #define ECB_NAN NAN
1112 #else
1113 #define ECB_NAN ECB_INFINITY
1114 #endif
1115
1116 /* converts an ieee half/binary16 to a float */
1117 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1118 ecb_function_ float
1119 ecb_binary16_to_float (uint16_t x)
1120 {
1121 int e = (x >> 10) & 0x1f;
1122 int m = x & 0x3ff;
1123 float r;
1124
1125 if (!e ) r = ldexpf (m , -24);
1126 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1127 else if (m ) r = ECB_NAN;
1128 else r = ECB_INFINITY;
1129
1130 return x & 0x8000 ? -r : r;
1131 }
1132
1133 /* convert a float to ieee single/binary32 */
1134 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1135 ecb_function_ uint32_t
1136 ecb_float_to_binary32 (float x)
1137 {
1138 uint32_t r;
1139
1140 #if ECB_STDFP
1141 memcpy (&r, &x, 4);
1142 #else
1143 /* slow emulation, works for anything but -0 */
1144 uint32_t m;
1145 int e;
1146
1147 if (x == 0e0f ) return 0x00000000U;
1148 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1149 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1150 if (x != x ) return 0x7fbfffffU;
1151
1152 m = frexpf (x, &e) * 0x1000000U;
1153
1154 r = m & 0x80000000U;
1155
1156 if (r)
1157 m = -m;
1158
1159 if (e <= -126)
1160 {
1161 m &= 0xffffffU;
1162 m >>= (-125 - e);
1163 e = -126;
1164 }
1165
1166 r |= (e + 126) << 23;
1167 r |= m & 0x7fffffU;
1168 #endif
1169
1170 return r;
1171 }
1172
1173 /* converts an ieee single/binary32 to a float */
1174 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1175 ecb_function_ float
1176 ecb_binary32_to_float (uint32_t x)
1177 {
1178 float r;
1179
1180 #if ECB_STDFP
1181 memcpy (&r, &x, 4);
1182 #else
1183 /* emulation, only works for normals and subnormals and +0 */
1184 int neg = x >> 31;
1185 int e = (x >> 23) & 0xffU;
1186
1187 x &= 0x7fffffU;
1188
1189 if (e)
1190 x |= 0x800000U;
1191 else
1192 e = 1;
1193
1194 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1195 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1196
1197 r = neg ? -r : r;
1198 #endif
1199
1200 return r;
1201 }
1202
1203 /* convert a double to ieee double/binary64 */
1204 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1205 ecb_function_ uint64_t
1206 ecb_double_to_binary64 (double x)
1207 {
1208 uint64_t r;
1209
1210 #if ECB_STDFP
1211 memcpy (&r, &x, 8);
1212 #else
1213 /* slow emulation, works for anything but -0 */
1214 uint64_t m;
1215 int e;
1216
1217 if (x == 0e0 ) return 0x0000000000000000U;
1218 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1219 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1220 if (x != x ) return 0X7ff7ffffffffffffU;
1221
1222 m = frexp (x, &e) * 0x20000000000000U;
1223
1224 r = m & 0x8000000000000000;;
1225
1226 if (r)
1227 m = -m;
1228
1229 if (e <= -1022)
1230 {
1231 m &= 0x1fffffffffffffU;
1232 m >>= (-1021 - e);
1233 e = -1022;
1234 }
1235
1236 r |= ((uint64_t)(e + 1022)) << 52;
1237 r |= m & 0xfffffffffffffU;
1238 #endif
1239
1240 return r;
1241 }
1242
1243 /* converts an ieee double/binary64 to a double */
1244 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1245 ecb_function_ double
1246 ecb_binary64_to_double (uint64_t x)
1247 {
1248 double r;
1249
1250 #if ECB_STDFP
1251 memcpy (&r, &x, 8);
1252 #else
1253 /* emulation, only works for normals and subnormals and +0 */
1254 int neg = x >> 63;
1255 int e = (x >> 52) & 0x7ffU;
1256
1257 x &= 0xfffffffffffffU;
1258
1259 if (e)
1260 x |= 0x10000000000000U;
1261 else
1262 e = 1;
1263
1264 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1265 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1266
1267 r = neg ? -r : r;
1268 #endif
1269
1270 return r;
1271 }
1272
1273#endif
1274
1275#endif
1276
1277/* ECB.H END */
1278
1279#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1280/* if your architecture doesn't need memory fences, e.g. because it is
1281 * single-cpu/core, or if you use libev in a project that doesn't use libev
1282 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1283 * libev, in which cases the memory fences become nops.
1284 * alternatively, you can remove this #error and link against libpthread,
1285 * which will then provide the memory fences.
1286 */
1287# error "memory fences not defined for your architecture, please report"
1288#endif
1289
1290#ifndef ECB_MEMORY_FENCE
1291# define ECB_MEMORY_FENCE do { } while (0)
1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1294#endif
1295
1296#define expect_false(cond) ecb_expect_false (cond)
1297#define expect_true(cond) ecb_expect_true (cond)
1298#define noinline ecb_noinline
1299
488#define inline_size static inline 1300#define inline_size ecb_inline
489 1301
490#if EV_FEATURE_CODE 1302#if EV_FEATURE_CODE
491# define inline_speed static inline 1303# define inline_speed ecb_inline
492#else 1304#else
493# define inline_speed static noinline 1305# define inline_speed static noinline
494#endif 1306#endif
495 1307
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1308#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1347# include "ev_win32.c"
536#endif 1348#endif
537 1349
538/*****************************************************************************/ 1350/*****************************************************************************/
539 1351
1352/* define a suitable floor function (only used by periodics atm) */
1353
1354#if EV_USE_FLOOR
1355# include <math.h>
1356# define ev_floor(v) floor (v)
1357#else
1358
1359#include <float.h>
1360
1361/* a floor() replacement function, should be independent of ev_tstamp type */
1362static ev_tstamp noinline
1363ev_floor (ev_tstamp v)
1364{
1365 /* the choice of shift factor is not terribly important */
1366#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1367 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1368#else
1369 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1370#endif
1371
1372 /* argument too large for an unsigned long? */
1373 if (expect_false (v >= shift))
1374 {
1375 ev_tstamp f;
1376
1377 if (v == v - 1.)
1378 return v; /* very large number */
1379
1380 f = shift * ev_floor (v * (1. / shift));
1381 return f + ev_floor (v - f);
1382 }
1383
1384 /* special treatment for negative args? */
1385 if (expect_false (v < 0.))
1386 {
1387 ev_tstamp f = -ev_floor (-v);
1388
1389 return f - (f == v ? 0 : 1);
1390 }
1391
1392 /* fits into an unsigned long */
1393 return (unsigned long)v;
1394}
1395
1396#endif
1397
1398/*****************************************************************************/
1399
1400#ifdef __linux
1401# include <sys/utsname.h>
1402#endif
1403
1404static unsigned int noinline ecb_cold
1405ev_linux_version (void)
1406{
1407#ifdef __linux
1408 unsigned int v = 0;
1409 struct utsname buf;
1410 int i;
1411 char *p = buf.release;
1412
1413 if (uname (&buf))
1414 return 0;
1415
1416 for (i = 3+1; --i; )
1417 {
1418 unsigned int c = 0;
1419
1420 for (;;)
1421 {
1422 if (*p >= '0' && *p <= '9')
1423 c = c * 10 + *p++ - '0';
1424 else
1425 {
1426 p += *p == '.';
1427 break;
1428 }
1429 }
1430
1431 v = (v << 8) | c;
1432 }
1433
1434 return v;
1435#else
1436 return 0;
1437#endif
1438}
1439
1440/*****************************************************************************/
1441
540#if EV_AVOID_STDIO 1442#if EV_AVOID_STDIO
541static void noinline 1443static void noinline ecb_cold
542ev_printerr (const char *msg) 1444ev_printerr (const char *msg)
543{ 1445{
544 write (STDERR_FILENO, msg, strlen (msg)); 1446 write (STDERR_FILENO, msg, strlen (msg));
545} 1447}
546#endif 1448#endif
547 1449
548static void (*syserr_cb)(const char *msg); 1450static void (*syserr_cb)(const char *msg) EV_THROW;
549 1451
550void 1452void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1454{
553 syserr_cb = cb; 1455 syserr_cb = cb;
554} 1456}
555 1457
556static void noinline 1458static void noinline ecb_cold
557ev_syserr (const char *msg) 1459ev_syserr (const char *msg)
558{ 1460{
559 if (!msg) 1461 if (!msg)
560 msg = "(libev) system error"; 1462 msg = "(libev) system error";
561 1463
562 if (syserr_cb) 1464 if (syserr_cb)
563 syserr_cb (msg); 1465 syserr_cb (msg);
564 else 1466 else
565 { 1467 {
566#if EV_AVOID_STDIO 1468#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1469 ev_printerr (msg);
570 ev_printerr (": "); 1470 ev_printerr (": ");
571 ev_printerr (err); 1471 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1472 ev_printerr ("\n");
573#else 1473#else
574 perror (msg); 1474 perror (msg);
575#endif 1475#endif
576 abort (); 1476 abort ();
577 } 1477 }
578} 1478}
579 1479
580static void * 1480static void *
581ev_realloc_emul (void *ptr, long size) 1481ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1482{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1483 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1484 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1485 * the single unix specification, so work around them here.
1486 * recently, also (at least) fedora and debian started breaking it,
1487 * despite documenting it otherwise.
589 */ 1488 */
590 1489
591 if (size) 1490 if (size)
592 return realloc (ptr, size); 1491 return realloc (ptr, size);
593 1492
594 free (ptr); 1493 free (ptr);
595 return 0; 1494 return 0;
596#endif
597} 1495}
598 1496
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1498
601void 1499void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1501{
604 alloc = cb; 1502 alloc = cb;
605} 1503}
606 1504
607inline_speed void * 1505inline_speed void *
… …
610 ptr = alloc (ptr, size); 1508 ptr = alloc (ptr, size);
611 1509
612 if (!ptr && size) 1510 if (!ptr && size)
613 { 1511 {
614#if EV_AVOID_STDIO 1512#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1513 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1514#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1515 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1516#endif
619 abort (); 1517 abort ();
620 } 1518 }
621 1519
622 return ptr; 1520 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1537 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1538 unsigned char unused;
641#if EV_USE_EPOLL 1539#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1540 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1541#endif
644#if EV_SELECT_IS_WINSOCKET 1542#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1543 SOCKET handle;
1544#endif
1545#if EV_USE_IOCP
1546 OVERLAPPED or, ow;
646#endif 1547#endif
647} ANFD; 1548} ANFD;
648 1549
649/* stores the pending event set for a given watcher */ 1550/* stores the pending event set for a given watcher */
650typedef struct 1551typedef struct
… …
692 #undef VAR 1593 #undef VAR
693 }; 1594 };
694 #include "ev_wrap.h" 1595 #include "ev_wrap.h"
695 1596
696 static struct ev_loop default_loop_struct; 1597 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1598 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1599
699#else 1600#else
700 1601
701 ev_tstamp ev_rt_now; 1602 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; 1603 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1604 #include "ev_vars.h"
704 #undef VAR 1605 #undef VAR
705 1606
706 static int ev_default_loop_ptr; 1607 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1616# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1617# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1618# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1619#endif
719 1620
720#define EVUNLOOP_RECURSE 0x80 1621#define EVBREAK_RECURSE 0x80
721 1622
722/*****************************************************************************/ 1623/*****************************************************************************/
723 1624
724#ifndef EV_HAVE_EV_TIME 1625#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1626ev_tstamp
726ev_time (void) 1627ev_time (void) EV_THROW
727{ 1628{
728#if EV_USE_REALTIME 1629#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1630 if (expect_true (have_realtime))
730 { 1631 {
731 struct timespec ts; 1632 struct timespec ts;
… …
755 return ev_time (); 1656 return ev_time ();
756} 1657}
757 1658
758#if EV_MULTIPLICITY 1659#if EV_MULTIPLICITY
759ev_tstamp 1660ev_tstamp
760ev_now (EV_P) 1661ev_now (EV_P) EV_THROW
761{ 1662{
762 return ev_rt_now; 1663 return ev_rt_now;
763} 1664}
764#endif 1665#endif
765 1666
766void 1667void
767ev_sleep (ev_tstamp delay) 1668ev_sleep (ev_tstamp delay) EV_THROW
768{ 1669{
769 if (delay > 0.) 1670 if (delay > 0.)
770 { 1671 {
771#if EV_USE_NANOSLEEP 1672#if EV_USE_NANOSLEEP
772 struct timespec ts; 1673 struct timespec ts;
773 1674
774 ts.tv_sec = (time_t)delay; 1675 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1676 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1677#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1678 Sleep ((unsigned long)(delay * 1e3));
780#else 1679#else
781 struct timeval tv; 1680 struct timeval tv;
782 1681
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 */ 1682 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1683 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1684 /* by older ones */
1685 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1686 select (0, 0, 0, 0, &tv);
790#endif 1687#endif
791 } 1688 }
792} 1689}
793 1690
… …
804 1701
805 do 1702 do
806 ncur <<= 1; 1703 ncur <<= 1;
807 while (cnt > ncur); 1704 while (cnt > ncur);
808 1705
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1706 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1707 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1708 {
812 ncur *= elem; 1709 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1710 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1711 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1713 }
817 1714
818 return ncur; 1715 return ncur;
819} 1716}
820 1717
821static noinline void * 1718static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1719array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1720{
824 *cur = array_nextsize (elem, *cur, cnt); 1721 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1722 return ev_realloc (base, elem * *cur);
826} 1723}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1726 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1727
831#define array_needsize(type,base,cur,cnt,init) \ 1728#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1729 if (expect_false ((cnt) > (cur))) \
833 { \ 1730 { \
834 int ocur_ = (cur); \ 1731 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1732 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1733 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1734 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1735 }
839 1736
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1754pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1755{
859} 1756}
860 1757
861void noinline 1758void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1760{
864 W w_ = (W)w; 1761 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1762 int pri = ABSPRI (w_);
866 1763
867 if (expect_false (w_->pending)) 1764 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1768 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1770 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1771 pendings [pri][w_->pending - 1].events = revents;
875 } 1772 }
1773
1774 pendingpri = NUMPRI - 1;
876} 1775}
877 1776
878inline_speed void 1777inline_speed void
879feed_reverse (EV_P_ W w) 1778feed_reverse (EV_P_ W w)
880{ 1779{
… …
926 if (expect_true (!anfd->reify)) 1825 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1826 fd_event_nocheck (EV_A_ fd, revents);
928} 1827}
929 1828
930void 1829void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1831{
933 if (fd >= 0 && fd < anfdmax) 1832 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1833 fd_event_nocheck (EV_A_ fd, revents);
935} 1834}
936 1835
… …
939inline_size void 1838inline_size void
940fd_reify (EV_P) 1839fd_reify (EV_P)
941{ 1840{
942 int i; 1841 int i;
943 1842
1843#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1844 for (i = 0; i < fdchangecnt; ++i)
1845 {
1846 int fd = fdchanges [i];
1847 ANFD *anfd = anfds + fd;
1848
1849 if (anfd->reify & EV__IOFDSET && anfd->head)
1850 {
1851 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1852
1853 if (handle != anfd->handle)
1854 {
1855 unsigned long arg;
1856
1857 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1858
1859 /* handle changed, but fd didn't - we need to do it in two steps */
1860 backend_modify (EV_A_ fd, anfd->events, 0);
1861 anfd->events = 0;
1862 anfd->handle = handle;
1863 }
1864 }
1865 }
1866#endif
1867
944 for (i = 0; i < fdchangecnt; ++i) 1868 for (i = 0; i < fdchangecnt; ++i)
945 { 1869 {
946 int fd = fdchanges [i]; 1870 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1871 ANFD *anfd = anfds + fd;
948 ev_io *w; 1872 ev_io *w;
949 1873
950 unsigned char events = 0; 1874 unsigned char o_events = anfd->events;
1875 unsigned char o_reify = anfd->reify;
951 1876
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1877 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1878
955#if EV_SELECT_IS_WINSOCKET 1879 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1880 {
958 unsigned long arg; 1881 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1882
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1883 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1884 anfd->events |= (unsigned char)w->events;
1885
1886 if (o_events != anfd->events)
1887 o_reify = EV__IOFDSET; /* actually |= */
961 } 1888 }
962#endif
963 1889
964 { 1890 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); 1891 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1892 }
975 1893
976 fdchangecnt = 0; 1894 fdchangecnt = 0;
977} 1895}
978 1896
… …
990 fdchanges [fdchangecnt - 1] = fd; 1908 fdchanges [fdchangecnt - 1] = fd;
991 } 1909 }
992} 1910}
993 1911
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1912/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1913inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1914fd_kill (EV_P_ int fd)
997{ 1915{
998 ev_io *w; 1916 ev_io *w;
999 1917
1000 while ((w = (ev_io *)anfds [fd].head)) 1918 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1921 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1922 }
1005} 1923}
1006 1924
1007/* check whether the given fd is actually valid, for error recovery */ 1925/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1926inline_size int ecb_cold
1009fd_valid (int fd) 1927fd_valid (int fd)
1010{ 1928{
1011#ifdef _WIN32 1929#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1930 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1931#else
1014 return fcntl (fd, F_GETFD) != -1; 1932 return fcntl (fd, F_GETFD) != -1;
1015#endif 1933#endif
1016} 1934}
1017 1935
1018/* called on EBADF to verify fds */ 1936/* called on EBADF to verify fds */
1019static void noinline 1937static void noinline ecb_cold
1020fd_ebadf (EV_P) 1938fd_ebadf (EV_P)
1021{ 1939{
1022 int fd; 1940 int fd;
1023 1941
1024 for (fd = 0; fd < anfdmax; ++fd) 1942 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1944 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1945 fd_kill (EV_A_ fd);
1028} 1946}
1029 1947
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1948/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1949static void noinline ecb_cold
1032fd_enomem (EV_P) 1950fd_enomem (EV_P)
1033{ 1951{
1034 int fd; 1952 int fd;
1035 1953
1036 for (fd = anfdmax; fd--; ) 1954 for (fd = anfdmax; fd--; )
… …
1231 2149
1232/*****************************************************************************/ 2150/*****************************************************************************/
1233 2151
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2152#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2153
1236static void noinline 2154static void noinline ecb_cold
1237evpipe_init (EV_P) 2155evpipe_init (EV_P)
1238{ 2156{
1239 if (!ev_is_active (&pipe_w)) 2157 if (!ev_is_active (&pipe_w))
1240 { 2158 {
2159 int fds [2];
2160
1241# if EV_USE_EVENTFD 2161# if EV_USE_EVENTFD
2162 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2163 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2164 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2165 fds [1] = eventfd (0, 0);
1245 2166
1246 if (evfd >= 0) 2167 if (fds [1] < 0)
2168# endif
1247 { 2169 {
2170 while (pipe (fds))
2171 ev_syserr ("(libev) error creating signal/async pipe");
2172
2173 fd_intern (fds [0]);
2174 }
2175
1248 evpipe [0] = -1; 2176 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2177
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2178 if (evpipe [1] < 0)
2179 evpipe [1] = fds [1]; /* first call, set write fd */
2180 else
2181 {
2182 /* on subsequent calls, do not change evpipe [1] */
2183 /* so that evpipe_write can always rely on its value. */
2184 /* this branch does not do anything sensible on windows, */
2185 /* so must not be executed on windows */
2186
2187 dup2 (fds [1], evpipe [1]);
2188 close (fds [1]);
2189 }
2190
2191 fd_intern (evpipe [1]);
2192
2193 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2194 ev_io_start (EV_A_ &pipe_w);
2195 ev_unref (EV_A); /* watcher should not keep loop alive */
2196 }
2197}
2198
2199inline_speed void
2200evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2201{
2202 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2203
2204 if (expect_true (*flag))
2205 return;
2206
2207 *flag = 1;
2208 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2209
2210 pipe_write_skipped = 1;
2211
2212 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2213
2214 if (pipe_write_wanted)
2215 {
2216 int old_errno;
2217
2218 pipe_write_skipped = 0;
2219 ECB_MEMORY_FENCE_RELEASE;
2220
2221 old_errno = errno; /* save errno because write will clobber it */
2222
2223#if EV_USE_EVENTFD
2224 if (evpipe [0] < 0)
2225 {
2226 uint64_t counter = 1;
2227 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2228 }
1252 else 2229 else
1253# endif 2230#endif
1254 { 2231 {
1255 while (pipe (evpipe)) 2232#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2233 WSABUF buf;
1257 2234 DWORD sent;
1258 fd_intern (evpipe [0]); 2235 buf.buf = &buf;
1259 fd_intern (evpipe [1]); 2236 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2238#else
2239 write (evpipe [1], &(evpipe [1]), 1);
2240#endif
1261 } 2241 }
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 2242
1293 errno = old_errno; 2243 errno = old_errno;
1294 } 2244 }
1295} 2245}
1296 2246
… …
1299static void 2249static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2250pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2251{
1302 int i; 2252 int i;
1303 2253
2254 if (revents & EV_READ)
2255 {
1304#if EV_USE_EVENTFD 2256#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2257 if (evpipe [0] < 0)
1306 { 2258 {
1307 uint64_t counter; 2259 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2260 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2261 }
1310 else 2262 else
1311#endif 2263#endif
1312 { 2264 {
1313 char dummy; 2265 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2266#ifdef _WIN32
2267 WSABUF buf;
2268 DWORD recvd;
2269 DWORD flags = 0;
2270 buf.buf = dummy;
2271 buf.len = sizeof (dummy);
2272 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2273#else
1315 read (evpipe [0], &dummy, 1); 2274 read (evpipe [0], &dummy, sizeof (dummy));
2275#endif
2276 }
1316 } 2277 }
1317 2278
2279 pipe_write_skipped = 0;
2280
2281 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2282
2283#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2284 if (sig_pending)
1319 { 2285 {
1320 sig_pending = 0; 2286 sig_pending = 0;
2287
2288 ECB_MEMORY_FENCE;
1321 2289
1322 for (i = EV_NSIG - 1; i--; ) 2290 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2291 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2292 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2293 }
2294#endif
1326 2295
1327#if EV_ASYNC_ENABLE 2296#if EV_ASYNC_ENABLE
1328 if (async_pending) 2297 if (async_pending)
1329 { 2298 {
1330 async_pending = 0; 2299 async_pending = 0;
2300
2301 ECB_MEMORY_FENCE;
1331 2302
1332 for (i = asynccnt; i--; ) 2303 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2304 if (asyncs [i]->sent)
1334 { 2305 {
1335 asyncs [i]->sent = 0; 2306 asyncs [i]->sent = 0;
2307 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2308 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2309 }
1338 } 2310 }
1339#endif 2311#endif
1340} 2312}
1341 2313
1342/*****************************************************************************/ 2314/*****************************************************************************/
1343 2315
2316void
2317ev_feed_signal (int signum) EV_THROW
2318{
2319#if EV_MULTIPLICITY
2320 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE;
2322 EV_A = signals [signum - 1].loop;
2323
2324 if (!EV_A)
2325 return;
2326#endif
2327
2328 signals [signum - 1].pending = 1;
2329 evpipe_write (EV_A_ &sig_pending);
2330}
2331
1344static void 2332static void
1345ev_sighandler (int signum) 2333ev_sighandler (int signum)
1346{ 2334{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2335#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2336 signal (signum, ev_sighandler);
1353#endif 2337#endif
1354 2338
1355 signals [signum - 1].pending = 1; 2339 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2340}
1358 2341
1359void noinline 2342void noinline
1360ev_feed_signal_event (EV_P_ int signum) 2343ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 2344{
1362 WL w; 2345 WL w;
1363 2346
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2347 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2348 return;
1366 2349
1367 --signum; 2350 --signum;
1368 2351
1369#if EV_MULTIPLICITY 2352#if EV_MULTIPLICITY
… …
1373 if (expect_false (signals [signum].loop != EV_A)) 2356 if (expect_false (signals [signum].loop != EV_A))
1374 return; 2357 return;
1375#endif 2358#endif
1376 2359
1377 signals [signum].pending = 0; 2360 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE;
1378 2362
1379 for (w = signals [signum].head; w; w = w->next) 2363 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2364 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2365}
1382 2366
… …
1461 2445
1462#endif 2446#endif
1463 2447
1464/*****************************************************************************/ 2448/*****************************************************************************/
1465 2449
2450#if EV_USE_IOCP
2451# include "ev_iocp.c"
2452#endif
1466#if EV_USE_PORT 2453#if EV_USE_PORT
1467# include "ev_port.c" 2454# include "ev_port.c"
1468#endif 2455#endif
1469#if EV_USE_KQUEUE 2456#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2457# include "ev_kqueue.c"
… …
1477#endif 2464#endif
1478#if EV_USE_SELECT 2465#if EV_USE_SELECT
1479# include "ev_select.c" 2466# include "ev_select.c"
1480#endif 2467#endif
1481 2468
1482int 2469int ecb_cold
1483ev_version_major (void) 2470ev_version_major (void) EV_THROW
1484{ 2471{
1485 return EV_VERSION_MAJOR; 2472 return EV_VERSION_MAJOR;
1486} 2473}
1487 2474
1488int 2475int ecb_cold
1489ev_version_minor (void) 2476ev_version_minor (void) EV_THROW
1490{ 2477{
1491 return EV_VERSION_MINOR; 2478 return EV_VERSION_MINOR;
1492} 2479}
1493 2480
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2481/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2482int inline_size ecb_cold
1496enable_secure (void) 2483enable_secure (void)
1497{ 2484{
1498#ifdef _WIN32 2485#ifdef _WIN32
1499 return 0; 2486 return 0;
1500#else 2487#else
1501 return getuid () != geteuid () 2488 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2489 || getgid () != getegid ();
1503#endif 2490#endif
1504} 2491}
1505 2492
1506unsigned int 2493unsigned int ecb_cold
1507ev_supported_backends (void) 2494ev_supported_backends (void) EV_THROW
1508{ 2495{
1509 unsigned int flags = 0; 2496 unsigned int flags = 0;
1510 2497
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2503
1517 return flags; 2504 return flags;
1518} 2505}
1519 2506
1520unsigned int 2507unsigned int ecb_cold
1521ev_recommended_backends (void) 2508ev_recommended_backends (void) EV_THROW
1522{ 2509{
1523 unsigned int flags = ev_supported_backends (); 2510 unsigned int flags = ev_supported_backends ();
1524 2511
1525#ifndef __NetBSD__ 2512#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2513 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2524#endif
1538 2525
1539 return flags; 2526 return flags;
1540} 2527}
1541 2528
2529unsigned int ecb_cold
2530ev_embeddable_backends (void) EV_THROW
2531{
2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2533
2534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2535 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2536 flags &= ~EVBACKEND_EPOLL;
2537
2538 return flags;
2539}
2540
1542unsigned int 2541unsigned 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) 2542ev_backend (EV_P) EV_THROW
1556{ 2543{
1557 return backend; 2544 return backend;
1558} 2545}
1559 2546
1560#if EV_FEATURE_API 2547#if EV_FEATURE_API
1561unsigned int 2548unsigned int
1562ev_iteration (EV_P) 2549ev_iteration (EV_P) EV_THROW
1563{ 2550{
1564 return loop_count; 2551 return loop_count;
1565} 2552}
1566 2553
1567unsigned int 2554unsigned int
1568ev_depth (EV_P) 2555ev_depth (EV_P) EV_THROW
1569{ 2556{
1570 return loop_depth; 2557 return loop_depth;
1571} 2558}
1572 2559
1573void 2560void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2562{
1576 io_blocktime = interval; 2563 io_blocktime = interval;
1577} 2564}
1578 2565
1579void 2566void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2568{
1582 timeout_blocktime = interval; 2569 timeout_blocktime = interval;
1583} 2570}
1584 2571
1585void 2572void
1586ev_set_userdata (EV_P_ void *data) 2573ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2574{
1588 userdata = data; 2575 userdata = data;
1589} 2576}
1590 2577
1591void * 2578void *
1592ev_userdata (EV_P) 2579ev_userdata (EV_P) EV_THROW
1593{ 2580{
1594 return userdata; 2581 return userdata;
1595} 2582}
1596 2583
2584void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2585ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1598{ 2586{
1599 invoke_cb = invoke_pending_cb; 2587 invoke_cb = invoke_pending_cb;
1600} 2588}
1601 2589
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2590void
2591ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1603{ 2592{
1604 release_cb = release; 2593 release_cb = release;
1605 acquire_cb = acquire; 2594 acquire_cb = acquire;
1606} 2595}
1607#endif 2596#endif
1608 2597
1609/* initialise a loop structure, must be zero-initialised */ 2598/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2599static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2600loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2601{
1613 if (!backend) 2602 if (!backend)
1614 { 2603 {
2604 origflags = flags;
2605
1615#if EV_USE_REALTIME 2606#if EV_USE_REALTIME
1616 if (!have_realtime) 2607 if (!have_realtime)
1617 { 2608 {
1618 struct timespec ts; 2609 struct timespec ts;
1619 2610
… …
1641 if (!(flags & EVFLAG_NOENV) 2632 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2633 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2634 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2635 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2636
1646 ev_rt_now = ev_time (); 2637 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2638 mn_now = get_clock ();
1648 now_floor = mn_now; 2639 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2640 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2641#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2642 invoke_cb = ev_invoke_pending;
1652#endif 2643#endif
1653 2644
1654 io_blocktime = 0.; 2645 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2646 timeout_blocktime = 0.;
1656 backend = 0; 2647 backend = 0;
1657 backend_fd = -1; 2648 backend_fd = -1;
1658 sig_pending = 0; 2649 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2650#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2651 async_pending = 0;
1661#endif 2652#endif
2653 pipe_write_skipped = 0;
2654 pipe_write_wanted = 0;
2655 evpipe [0] = -1;
2656 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 2657#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2659#endif
1665#if EV_USE_SIGNALFD 2660#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2662#endif
1668 2663
1669 if (!(flags & 0x0000ffffU)) 2664 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2665 flags |= ev_recommended_backends ();
1671 2666
2667#if EV_USE_IOCP
2668 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2669#endif
1672#if EV_USE_PORT 2670#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2672#endif
1675#if EV_USE_KQUEUE 2673#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2691#endif
1694 } 2692 }
1695} 2693}
1696 2694
1697/* free up a loop structure */ 2695/* free up a loop structure */
1698static void noinline 2696void ecb_cold
1699loop_destroy (EV_P) 2697ev_loop_destroy (EV_P)
1700{ 2698{
1701 int i; 2699 int i;
2700
2701#if EV_MULTIPLICITY
2702 /* mimic free (0) */
2703 if (!EV_A)
2704 return;
2705#endif
2706
2707#if EV_CLEANUP_ENABLE
2708 /* queue cleanup watchers (and execute them) */
2709 if (expect_false (cleanupcnt))
2710 {
2711 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2712 EV_INVOKE_PENDING;
2713 }
2714#endif
2715
2716#if EV_CHILD_ENABLE
2717 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2718 {
2719 ev_ref (EV_A); /* child watcher */
2720 ev_signal_stop (EV_A_ &childev);
2721 }
2722#endif
1702 2723
1703 if (ev_is_active (&pipe_w)) 2724 if (ev_is_active (&pipe_w))
1704 { 2725 {
1705 /*ev_ref (EV_A);*/ 2726 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2727 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 2728
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]); 2729 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 2730 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 2731 }
1719 2732
1720#if EV_USE_SIGNALFD 2733#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 2734 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 2735 close (sigfd);
… …
1728#endif 2741#endif
1729 2742
1730 if (backend_fd >= 0) 2743 if (backend_fd >= 0)
1731 close (backend_fd); 2744 close (backend_fd);
1732 2745
2746#if EV_USE_IOCP
2747 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2748#endif
1733#if EV_USE_PORT 2749#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2750 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2751#endif
1736#if EV_USE_KQUEUE 2752#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2753 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2780 array_free (periodic, EMPTY);
1765#endif 2781#endif
1766#if EV_FORK_ENABLE 2782#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2783 array_free (fork, EMPTY);
1768#endif 2784#endif
2785#if EV_CLEANUP_ENABLE
2786 array_free (cleanup, EMPTY);
2787#endif
1769 array_free (prepare, EMPTY); 2788 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2789 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2790#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2791 array_free (async, EMPTY);
1773#endif 2792#endif
1774 2793
1775 backend = 0; 2794 backend = 0;
2795
2796#if EV_MULTIPLICITY
2797 if (ev_is_default_loop (EV_A))
2798#endif
2799 ev_default_loop_ptr = 0;
2800#if EV_MULTIPLICITY
2801 else
2802 ev_free (EV_A);
2803#endif
1776} 2804}
1777 2805
1778#if EV_USE_INOTIFY 2806#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2807inline_size void infy_fork (EV_P);
1780#endif 2808#endif
… …
1793#endif 2821#endif
1794#if EV_USE_INOTIFY 2822#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 2823 infy_fork (EV_A);
1796#endif 2824#endif
1797 2825
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 2827 if (ev_is_active (&pipe_w))
1799 { 2828 {
1800 /* this "locks" the handlers against writing to the pipe */ 2829 /* 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 2830
1807 ev_ref (EV_A); 2831 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2832 ev_io_stop (EV_A_ &pipe_w);
1809 2833
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 2834 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 2835 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 2836
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 2837 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 2838 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 2840 }
2841#endif
1827 2842
1828 postfork = 0; 2843 postfork = 0;
1829} 2844}
1830 2845
1831#if EV_MULTIPLICITY 2846#if EV_MULTIPLICITY
1832 2847
1833struct ev_loop * 2848struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2849ev_loop_new (unsigned int flags) EV_THROW
1835{ 2850{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2852
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2853 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2854 loop_init (EV_A_ flags);
1840 2855
1841 if (ev_backend (EV_A)) 2856 if (ev_backend (EV_A))
1842 return EV_A; 2857 return EV_A;
1843 2858
2859 ev_free (EV_A);
1844 return 0; 2860 return 0;
1845} 2861}
1846 2862
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 */ 2863#endif /* multiplicity */
1860 2864
1861#if EV_VERIFY 2865#if EV_VERIFY
1862static void noinline 2866static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2867verify_watcher (EV_P_ W w)
1864{ 2868{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2869 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2870
1867 if (w->pending) 2871 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2872 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2873}
1870 2874
1871static void noinline 2875static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2876verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2877{
1874 int i; 2878 int i;
1875 2879
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2880 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2885
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2886 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2887 }
1884} 2888}
1885 2889
1886static void noinline 2890static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2891array_verify (EV_P_ W *ws, int cnt)
1888{ 2892{
1889 while (cnt--) 2893 while (cnt--)
1890 { 2894 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2895 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2897 }
1894} 2898}
1895#endif 2899#endif
1896 2900
1897#if EV_FEATURE_API 2901#if EV_FEATURE_API
1898void 2902void ecb_cold
1899ev_verify (EV_P) 2903ev_verify (EV_P) EV_THROW
1900{ 2904{
1901#if EV_VERIFY 2905#if EV_VERIFY
1902 int i; 2906 int i;
1903 WL w; 2907 WL w, w2;
1904 2908
1905 assert (activecnt >= -1); 2909 assert (activecnt >= -1);
1906 2910
1907 assert (fdchangemax >= fdchangecnt); 2911 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2912 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2913 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2914
1911 assert (anfdmax >= 0); 2915 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2916 for (i = 0; i < anfdmax; ++i)
2917 {
2918 int j = 0;
2919
1913 for (w = anfds [i].head; w; w = w->next) 2920 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2921 {
1915 verify_watcher (EV_A_ (W)w); 2922 verify_watcher (EV_A_ (W)w);
2923
2924 if (j++ & 1)
2925 {
2926 assert (("libev: io watcher list contains a loop", w != w2));
2927 w2 = w2->next;
2928 }
2929
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2930 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)); 2931 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2932 }
2933 }
1919 2934
1920 assert (timermax >= timercnt); 2935 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2936 verify_heap (EV_A_ timers, timercnt);
1922 2937
1923#if EV_PERIODIC_ENABLE 2938#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 2953#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2954 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2955 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2956#endif
1942 2957
2958#if EV_CLEANUP_ENABLE
2959 assert (cleanupmax >= cleanupcnt);
2960 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2961#endif
2962
1943#if EV_ASYNC_ENABLE 2963#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2964 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2965 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2966#endif
1947 2967
… …
1964#endif 2984#endif
1965} 2985}
1966#endif 2986#endif
1967 2987
1968#if EV_MULTIPLICITY 2988#if EV_MULTIPLICITY
1969struct ev_loop * 2989struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2990#else
1972int 2991int
2992#endif
1973ev_default_loop (unsigned int flags) 2993ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2994{
1976 if (!ev_default_loop_ptr) 2995 if (!ev_default_loop_ptr)
1977 { 2996 {
1978#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2998 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 3017
1999 return ev_default_loop_ptr; 3018 return ev_default_loop_ptr;
2000} 3019}
2001 3020
2002void 3021void
2003ev_default_destroy (void) 3022ev_loop_fork (EV_P) EV_THROW
2004{ 3023{
2005#if EV_MULTIPLICITY 3024 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} 3025}
2028 3026
2029/*****************************************************************************/ 3027/*****************************************************************************/
2030 3028
2031void 3029void
… …
2033{ 3031{
2034 EV_CB_INVOKE ((W)w, revents); 3032 EV_CB_INVOKE ((W)w, revents);
2035} 3033}
2036 3034
2037unsigned int 3035unsigned int
2038ev_pending_count (EV_P) 3036ev_pending_count (EV_P) EV_THROW
2039{ 3037{
2040 int pri; 3038 int pri;
2041 unsigned int count = 0; 3039 unsigned int count = 0;
2042 3040
2043 for (pri = NUMPRI; pri--; ) 3041 for (pri = NUMPRI; pri--; )
… …
2047} 3045}
2048 3046
2049void noinline 3047void noinline
2050ev_invoke_pending (EV_P) 3048ev_invoke_pending (EV_P)
2051{ 3049{
2052 int pri; 3050 pendingpri = NUMPRI;
2053 3051
2054 for (pri = NUMPRI; pri--; ) 3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3053 {
3054 --pendingpri;
3055
2055 while (pendingcnt [pri]) 3056 while (pendingcnt [pendingpri])
2056 { 3057 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 3059
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; 3060 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 3061 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 3062 EV_FREQUENT_CHECK;
2065 } 3063 }
3064 }
2066} 3065}
2067 3066
2068#if EV_IDLE_ENABLE 3067#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3068/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3069/* only when higher priorities are idle" logic */
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3126 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3127 }
2129} 3128}
2130 3129
2131#if EV_PERIODIC_ENABLE 3130#if EV_PERIODIC_ENABLE
3131
3132static void noinline
3133periodic_recalc (EV_P_ ev_periodic *w)
3134{
3135 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3136 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3137
3138 /* the above almost always errs on the low side */
3139 while (at <= ev_rt_now)
3140 {
3141 ev_tstamp nat = at + w->interval;
3142
3143 /* when resolution fails us, we use ev_rt_now */
3144 if (expect_false (nat == at))
3145 {
3146 at = ev_rt_now;
3147 break;
3148 }
3149
3150 at = nat;
3151 }
3152
3153 ev_at (w) = at;
3154}
3155
2132/* make periodics pending */ 3156/* make periodics pending */
2133inline_size void 3157inline_size void
2134periodics_reify (EV_P) 3158periodics_reify (EV_P)
2135{ 3159{
2136 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2137 3161
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3162 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3163 {
2140 int feed_count = 0;
2141
2142 do 3164 do
2143 { 3165 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3167
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3168 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3177 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3178 downheap (periodics, periodiccnt, HEAP0);
2157 } 3179 }
2158 else if (w->interval) 3180 else if (w->interval)
2159 { 3181 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3182 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]); 3183 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3184 downheap (periodics, periodiccnt, HEAP0);
2176 } 3185 }
2177 else 3186 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3187 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3195 }
2187} 3196}
2188 3197
2189/* simply recalculate all periodics */ 3198/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3199/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3200static void noinline ecb_cold
2192periodics_reschedule (EV_P) 3201periodics_reschedule (EV_P)
2193{ 3202{
2194 int i; 3203 int i;
2195 3204
2196 /* adjust periodics after time jump */ 3205 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3208 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3209
2201 if (w->reschedule_cb) 3210 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3211 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3212 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3213 periodic_recalc (EV_A_ w);
2205 3214
2206 ANHE_at_cache (periodics [i]); 3215 ANHE_at_cache (periodics [i]);
2207 } 3216 }
2208 3217
2209 reheap (periodics, periodiccnt); 3218 reheap (periodics, periodiccnt);
2210} 3219}
2211#endif 3220#endif
2212 3221
2213/* adjust all timers by a given offset */ 3222/* adjust all timers by a given offset */
2214static void noinline 3223static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3224timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3225{
2217 int i; 3226 int i;
2218 3227
2219 for (i = 0; i < timercnt; ++i) 3228 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3265 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3266 * in the unlikely event of having been preempted here.
2258 */ 3267 */
2259 for (i = 4; --i; ) 3268 for (i = 4; --i; )
2260 { 3269 {
3270 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3271 rtmn_diff = ev_rt_now - mn_now;
2262 3272
3273 diff = odiff - rtmn_diff;
3274
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3275 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 3276 return; /* all is well */
2265 3277
2266 ev_rt_now = ev_time (); 3278 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3279 mn_now = get_clock ();
2268 now_floor = mn_now; 3280 now_floor = mn_now;
… …
2290 3302
2291 mn_now = ev_rt_now; 3303 mn_now = ev_rt_now;
2292 } 3304 }
2293} 3305}
2294 3306
2295void 3307int
2296ev_loop (EV_P_ int flags) 3308ev_run (EV_P_ int flags)
2297{ 3309{
2298#if EV_FEATURE_API 3310#if EV_FEATURE_API
2299 ++loop_depth; 3311 ++loop_depth;
2300#endif 3312#endif
2301 3313
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3314 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3315
2304 loop_done = EVUNLOOP_CANCEL; 3316 loop_done = EVBREAK_CANCEL;
2305 3317
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3318 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3319
2308 do 3320 do
2309 { 3321 {
… …
2352 /* calculate blocking time */ 3364 /* calculate blocking time */
2353 { 3365 {
2354 ev_tstamp waittime = 0.; 3366 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3367 ev_tstamp sleeptime = 0.;
2356 3368
3369 /* remember old timestamp for io_blocktime calculation */
3370 ev_tstamp prev_mn_now = mn_now;
3371
3372 /* update time to cancel out callback processing overhead */
3373 time_update (EV_A_ 1e100);
3374
3375 /* from now on, we want a pipe-wake-up */
3376 pipe_write_wanted = 1;
3377
3378 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3379
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3380 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3381 {
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; 3382 waittime = MAX_BLOCKTIME;
2366 3383
2367 if (timercnt) 3384 if (timercnt)
2368 { 3385 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3386 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3387 if (waittime > to) waittime = to;
2371 } 3388 }
2372 3389
2373#if EV_PERIODIC_ENABLE 3390#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3391 if (periodiccnt)
2375 { 3392 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3393 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3394 if (waittime > to) waittime = to;
2378 } 3395 }
2379#endif 3396#endif
2380 3397
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3398 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3399 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3400 waittime = timeout_blocktime;
3401
3402 /* at this point, we NEED to wait, so we have to ensure */
3403 /* to pass a minimum nonzero value to the backend */
3404 if (expect_false (waittime < backend_mintime))
3405 waittime = backend_mintime;
2384 3406
2385 /* extra check because io_blocktime is commonly 0 */ 3407 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3408 if (expect_false (io_blocktime))
2387 { 3409 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3410 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3411
2390 if (sleeptime > waittime - backend_fudge) 3412 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3413 sleeptime = waittime - backend_mintime;
2392 3414
2393 if (expect_true (sleeptime > 0.)) 3415 if (expect_true (sleeptime > 0.))
2394 { 3416 {
2395 ev_sleep (sleeptime); 3417 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3418 waittime -= sleeptime;
… …
2399 } 3421 }
2400 3422
2401#if EV_FEATURE_API 3423#if EV_FEATURE_API
2402 ++loop_count; 3424 ++loop_count;
2403#endif 3425#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3426 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3427 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3428 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3429
3430 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3431
3432 ECB_MEMORY_FENCE_ACQUIRE;
3433 if (pipe_write_skipped)
3434 {
3435 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3437 }
3438
2407 3439
2408 /* update ev_rt_now, do magic */ 3440 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3441 time_update (EV_A_ waittime + sleeptime);
2410 } 3442 }
2411 3443
… …
2429 EV_INVOKE_PENDING; 3461 EV_INVOKE_PENDING;
2430 } 3462 }
2431 while (expect_true ( 3463 while (expect_true (
2432 activecnt 3464 activecnt
2433 && !loop_done 3465 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3466 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3467 ));
2436 3468
2437 if (loop_done == EVUNLOOP_ONE) 3469 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3470 loop_done = EVBREAK_CANCEL;
2439 3471
2440#if EV_FEATURE_API 3472#if EV_FEATURE_API
2441 --loop_depth; 3473 --loop_depth;
2442#endif 3474#endif
3475
3476 return activecnt;
2443} 3477}
2444 3478
2445void 3479void
2446ev_unloop (EV_P_ int how) 3480ev_break (EV_P_ int how) EV_THROW
2447{ 3481{
2448 loop_done = how; 3482 loop_done = how;
2449} 3483}
2450 3484
2451void 3485void
2452ev_ref (EV_P) 3486ev_ref (EV_P) EV_THROW
2453{ 3487{
2454 ++activecnt; 3488 ++activecnt;
2455} 3489}
2456 3490
2457void 3491void
2458ev_unref (EV_P) 3492ev_unref (EV_P) EV_THROW
2459{ 3493{
2460 --activecnt; 3494 --activecnt;
2461} 3495}
2462 3496
2463void 3497void
2464ev_now_update (EV_P) 3498ev_now_update (EV_P) EV_THROW
2465{ 3499{
2466 time_update (EV_A_ 1e100); 3500 time_update (EV_A_ 1e100);
2467} 3501}
2468 3502
2469void 3503void
2470ev_suspend (EV_P) 3504ev_suspend (EV_P) EV_THROW
2471{ 3505{
2472 ev_now_update (EV_A); 3506 ev_now_update (EV_A);
2473} 3507}
2474 3508
2475void 3509void
2476ev_resume (EV_P) 3510ev_resume (EV_P) EV_THROW
2477{ 3511{
2478 ev_tstamp mn_prev = mn_now; 3512 ev_tstamp mn_prev = mn_now;
2479 3513
2480 ev_now_update (EV_A); 3514 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3515 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3554 w->pending = 0;
2521 } 3555 }
2522} 3556}
2523 3557
2524int 3558int
2525ev_clear_pending (EV_P_ void *w) 3559ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3560{
2527 W w_ = (W)w; 3561 W w_ = (W)w;
2528 int pending = w_->pending; 3562 int pending = w_->pending;
2529 3563
2530 if (expect_true (pending)) 3564 if (expect_true (pending))
… …
2563} 3597}
2564 3598
2565/*****************************************************************************/ 3599/*****************************************************************************/
2566 3600
2567void noinline 3601void noinline
2568ev_io_start (EV_P_ ev_io *w) 3602ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3603{
2570 int fd = w->fd; 3604 int fd = w->fd;
2571 3605
2572 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
2573 return; 3607 return;
… …
2579 3613
2580 ev_start (EV_A_ (W)w, 1); 3614 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3616 wlist_add (&anfds[fd].head, (WL)w);
2583 3617
3618 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3621 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3622 w->events &= ~EV__IOFDSET;
2586 3623
2587 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
2588} 3625}
2589 3626
2590void noinline 3627void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3628ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3629{
2593 clear_pending (EV_A_ (W)w); 3630 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3631 if (expect_false (!ev_is_active (w)))
2595 return; 3632 return;
2596 3633
… …
2599 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
2600 3637
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3638 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3639 ev_stop (EV_A_ (W)w);
2603 3640
2604 fd_change (EV_A_ w->fd, 1); 3641 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3642
2606 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
2607} 3644}
2608 3645
2609void noinline 3646void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3648{
2612 if (expect_false (ev_is_active (w))) 3649 if (expect_false (ev_is_active (w)))
2613 return; 3650 return;
2614 3651
2615 ev_at (w) += mn_now; 3652 ev_at (w) += mn_now;
… …
2629 3666
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3667 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3668}
2632 3669
2633void noinline 3670void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3672{
2636 clear_pending (EV_A_ (W)w); 3673 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3674 if (expect_false (!ev_is_active (w)))
2638 return; 3675 return;
2639 3676
… …
2659 3696
2660 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
2661} 3698}
2662 3699
2663void noinline 3700void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3702{
2666 EV_FREQUENT_CHECK; 3703 EV_FREQUENT_CHECK;
3704
3705 clear_pending (EV_A_ (W)w);
2667 3706
2668 if (ev_is_active (w)) 3707 if (ev_is_active (w))
2669 { 3708 {
2670 if (w->repeat) 3709 if (w->repeat)
2671 { 3710 {
… …
2684 3723
2685 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2686} 3725}
2687 3726
2688ev_tstamp 3727ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3729{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3731}
2693 3732
2694#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
2695void noinline 3734void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3736{
2698 if (expect_false (ev_is_active (w))) 3737 if (expect_false (ev_is_active (w)))
2699 return; 3738 return;
2700 3739
2701 if (w->reschedule_cb) 3740 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3741 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3742 else if (w->interval)
2704 { 3743 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3744 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 */ 3745 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3746 }
2709 else 3747 else
2710 ev_at (w) = w->offset; 3748 ev_at (w) = w->offset;
2711 3749
2712 EV_FREQUENT_CHECK; 3750 EV_FREQUENT_CHECK;
… …
2722 3760
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3761 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3762}
2725 3763
2726void noinline 3764void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3766{
2729 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2731 return; 3769 return;
2732 3770
… …
2750 3788
2751 EV_FREQUENT_CHECK; 3789 EV_FREQUENT_CHECK;
2752} 3790}
2753 3791
2754void noinline 3792void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3794{
2757 /* TODO: use adjustheap and recalculation */ 3795 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3796 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3797 ev_periodic_start (EV_A_ w);
2760} 3798}
… …
2765#endif 3803#endif
2766 3804
2767#if EV_SIGNAL_ENABLE 3805#if EV_SIGNAL_ENABLE
2768 3806
2769void noinline 3807void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3809{
2772 if (expect_false (ev_is_active (w))) 3810 if (expect_false (ev_is_active (w)))
2773 return; 3811 return;
2774 3812
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3813 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2777#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 3816 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3817 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 3818
2781 signals [w->signum - 1].loop = EV_A; 3819 signals [w->signum - 1].loop = EV_A;
3820 ECB_MEMORY_FENCE_RELEASE;
2782#endif 3821#endif
2783 3822
2784 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2785 3824
2786#if EV_USE_SIGNALFD 3825#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 3872 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3873 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3874 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3875 sigaction (w->signum, &sa, 0);
2837 3876
3877 if (origflags & EVFLAG_NOSIGMASK)
3878 {
2838 sigemptyset (&sa.sa_mask); 3879 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3880 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3881 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3882 }
2841#endif 3883#endif
2842 } 3884 }
2843 3885
2844 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
2845} 3887}
2846 3888
2847void noinline 3889void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3891{
2850 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
2852 return; 3894 return;
2853 3895
… …
2884#endif 3926#endif
2885 3927
2886#if EV_CHILD_ENABLE 3928#if EV_CHILD_ENABLE
2887 3929
2888void 3930void
2889ev_child_start (EV_P_ ev_child *w) 3931ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3932{
2891#if EV_MULTIPLICITY 3933#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3935#endif
2894 if (expect_false (ev_is_active (w))) 3936 if (expect_false (ev_is_active (w)))
… …
2901 3943
2902 EV_FREQUENT_CHECK; 3944 EV_FREQUENT_CHECK;
2903} 3945}
2904 3946
2905void 3947void
2906ev_child_stop (EV_P_ ev_child *w) 3948ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3949{
2908 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
2910 return; 3952 return;
2911 3953
… …
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 3981
2940static void noinline 3982static void noinline
2941infy_add (EV_P_ ev_stat *w) 3983infy_add (EV_P_ ev_stat *w)
2942{ 3984{
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); 3985 w->wd = inotify_add_watch (fs_fd, w->path,
3986 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3987 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3988 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 3989
2945 if (w->wd >= 0) 3990 if (w->wd >= 0)
2946 { 3991 {
2947 struct statfs sfs; 3992 struct statfs sfs;
2948 3993
… …
2952 3997
2953 if (!fs_2625) 3998 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3999 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 4000 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 4001 && (sfs.f_type == 0x1373 /* devfs */
4002 || sfs.f_type == 0x4006 /* fat */
4003 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 4004 || sfs.f_type == 0xEF53 /* ext2/3 */
4005 || sfs.f_type == 0x72b6 /* jffs2 */
4006 || sfs.f_type == 0x858458f6 /* ramfs */
4007 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 4008 || sfs.f_type == 0x3153464a /* jfs */
4009 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 4010 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 4011 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 4012 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4013 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 4014 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4015 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 4016 }
… …
2986 if (!pend || pend == path) 4037 if (!pend || pend == path)
2987 break; 4038 break;
2988 4039
2989 *pend = 0; 4040 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 4041 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 4042 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4043 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 4044 }
2994 } 4045 }
2995 4046
2996 if (w->wd >= 0) 4047 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4114 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4115 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4116 }
3066} 4117}
3067 4118
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 4119inline_size void ecb_cold
3101ev_check_2625 (EV_P) 4120ev_check_2625 (EV_P)
3102{ 4121{
3103 /* kernels < 2.6.25 are borked 4122 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4123 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4124 */
… …
3110} 4129}
3111 4130
3112inline_size int 4131inline_size int
3113infy_newfd (void) 4132infy_newfd (void)
3114{ 4133{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4134#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4135 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4136 if (fd >= 0)
3118 return fd; 4137 return fd;
3119#endif 4138#endif
3120 return inotify_init (); 4139 return inotify_init ();
… …
3195#else 4214#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4215# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4216#endif
3198 4217
3199void 4218void
3200ev_stat_stat (EV_P_ ev_stat *w) 4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 4220{
3202 if (lstat (w->path, &w->attr) < 0) 4221 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4222 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4223 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4224 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4263 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4264 }
3246} 4265}
3247 4266
3248void 4267void
3249ev_stat_start (EV_P_ ev_stat *w) 4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 4269{
3251 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3252 return; 4271 return;
3253 4272
3254 ev_stat_stat (EV_A_ w); 4273 ev_stat_stat (EV_A_ w);
… …
3275 4294
3276 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3277} 4296}
3278 4297
3279void 4298void
3280ev_stat_stop (EV_P_ ev_stat *w) 4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 4300{
3282 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3284 return; 4303 return;
3285 4304
… …
3301} 4320}
3302#endif 4321#endif
3303 4322
3304#if EV_IDLE_ENABLE 4323#if EV_IDLE_ENABLE
3305void 4324void
3306ev_idle_start (EV_P_ ev_idle *w) 4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 4326{
3308 if (expect_false (ev_is_active (w))) 4327 if (expect_false (ev_is_active (w)))
3309 return; 4328 return;
3310 4329
3311 pri_adjust (EV_A_ (W)w); 4330 pri_adjust (EV_A_ (W)w);
… …
3324 4343
3325 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3326} 4345}
3327 4346
3328void 4347void
3329ev_idle_stop (EV_P_ ev_idle *w) 4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 4349{
3331 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3333 return; 4352 return;
3334 4353
… …
3348} 4367}
3349#endif 4368#endif
3350 4369
3351#if EV_PREPARE_ENABLE 4370#if EV_PREPARE_ENABLE
3352void 4371void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4373{
3355 if (expect_false (ev_is_active (w))) 4374 if (expect_false (ev_is_active (w)))
3356 return; 4375 return;
3357 4376
3358 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
… …
3363 4382
3364 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3365} 4384}
3366 4385
3367void 4386void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4388{
3370 clear_pending (EV_A_ (W)w); 4389 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4390 if (expect_false (!ev_is_active (w)))
3372 return; 4391 return;
3373 4392
… …
3386} 4405}
3387#endif 4406#endif
3388 4407
3389#if EV_CHECK_ENABLE 4408#if EV_CHECK_ENABLE
3390void 4409void
3391ev_check_start (EV_P_ ev_check *w) 4410ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4411{
3393 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3394 return; 4413 return;
3395 4414
3396 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
… …
3401 4420
3402 EV_FREQUENT_CHECK; 4421 EV_FREQUENT_CHECK;
3403} 4422}
3404 4423
3405void 4424void
3406ev_check_stop (EV_P_ ev_check *w) 4425ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4426{
3408 clear_pending (EV_A_ (W)w); 4427 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4428 if (expect_false (!ev_is_active (w)))
3410 return; 4429 return;
3411 4430
… …
3424} 4443}
3425#endif 4444#endif
3426 4445
3427#if EV_EMBED_ENABLE 4446#if EV_EMBED_ENABLE
3428void noinline 4447void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4449{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4450 ev_run (w->other, EVRUN_NOWAIT);
3432} 4451}
3433 4452
3434static void 4453static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4454embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4455{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4456 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4457
3439 if (ev_cb (w)) 4458 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4459 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4460 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4461 ev_run (w->other, EVRUN_NOWAIT);
3443} 4462}
3444 4463
3445static void 4464static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4465embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4466{
… …
3451 EV_P = w->other; 4470 EV_P = w->other;
3452 4471
3453 while (fdchangecnt) 4472 while (fdchangecnt)
3454 { 4473 {
3455 fd_reify (EV_A); 4474 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4475 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4476 }
3458 } 4477 }
3459} 4478}
3460 4479
3461static void 4480static void
… …
3467 4486
3468 { 4487 {
3469 EV_P = w->other; 4488 EV_P = w->other;
3470 4489
3471 ev_loop_fork (EV_A); 4490 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4491 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4492 }
3474 4493
3475 ev_embed_start (EV_A_ w); 4494 ev_embed_start (EV_A_ w);
3476} 4495}
3477 4496
… …
3482 ev_idle_stop (EV_A_ idle); 4501 ev_idle_stop (EV_A_ idle);
3483} 4502}
3484#endif 4503#endif
3485 4504
3486void 4505void
3487ev_embed_start (EV_P_ ev_embed *w) 4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4507{
3489 if (expect_false (ev_is_active (w))) 4508 if (expect_false (ev_is_active (w)))
3490 return; 4509 return;
3491 4510
3492 { 4511 {
… …
3513 4532
3514 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3515} 4534}
3516 4535
3517void 4536void
3518ev_embed_stop (EV_P_ ev_embed *w) 4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4538{
3520 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
3522 return; 4541 return;
3523 4542
… …
3533} 4552}
3534#endif 4553#endif
3535 4554
3536#if EV_FORK_ENABLE 4555#if EV_FORK_ENABLE
3537void 4556void
3538ev_fork_start (EV_P_ ev_fork *w) 4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4558{
3540 if (expect_false (ev_is_active (w))) 4559 if (expect_false (ev_is_active (w)))
3541 return; 4560 return;
3542 4561
3543 EV_FREQUENT_CHECK; 4562 EV_FREQUENT_CHECK;
… …
3548 4567
3549 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3550} 4569}
3551 4570
3552void 4571void
3553ev_fork_stop (EV_P_ ev_fork *w) 4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4573{
3555 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
3557 return; 4576 return;
3558 4577
… …
3569 4588
3570 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
3571} 4590}
3572#endif 4591#endif
3573 4592
4593#if EV_CLEANUP_ENABLE
4594void
4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4596{
4597 if (expect_false (ev_is_active (w)))
4598 return;
4599
4600 EV_FREQUENT_CHECK;
4601
4602 ev_start (EV_A_ (W)w, ++cleanupcnt);
4603 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4604 cleanups [cleanupcnt - 1] = w;
4605
4606 /* cleanup watchers should never keep a refcount on the loop */
4607 ev_unref (EV_A);
4608 EV_FREQUENT_CHECK;
4609}
4610
4611void
4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4613{
4614 clear_pending (EV_A_ (W)w);
4615 if (expect_false (!ev_is_active (w)))
4616 return;
4617
4618 EV_FREQUENT_CHECK;
4619 ev_ref (EV_A);
4620
4621 {
4622 int active = ev_active (w);
4623
4624 cleanups [active - 1] = cleanups [--cleanupcnt];
4625 ev_active (cleanups [active - 1]) = active;
4626 }
4627
4628 ev_stop (EV_A_ (W)w);
4629
4630 EV_FREQUENT_CHECK;
4631}
4632#endif
4633
3574#if EV_ASYNC_ENABLE 4634#if EV_ASYNC_ENABLE
3575void 4635void
3576ev_async_start (EV_P_ ev_async *w) 4636ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4637{
3578 if (expect_false (ev_is_active (w))) 4638 if (expect_false (ev_is_active (w)))
3579 return; 4639 return;
4640
4641 w->sent = 0;
3580 4642
3581 evpipe_init (EV_A); 4643 evpipe_init (EV_A);
3582 4644
3583 EV_FREQUENT_CHECK; 4645 EV_FREQUENT_CHECK;
3584 4646
… …
3588 4650
3589 EV_FREQUENT_CHECK; 4651 EV_FREQUENT_CHECK;
3590} 4652}
3591 4653
3592void 4654void
3593ev_async_stop (EV_P_ ev_async *w) 4655ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4656{
3595 clear_pending (EV_A_ (W)w); 4657 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4658 if (expect_false (!ev_is_active (w)))
3597 return; 4659 return;
3598 4660
… …
3609 4671
3610 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3611} 4673}
3612 4674
3613void 4675void
3614ev_async_send (EV_P_ ev_async *w) 4676ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4677{
3616 w->sent = 1; 4678 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4679 evpipe_write (EV_A_ &async_pending);
3618} 4680}
3619#endif 4681#endif
… …
3656 4718
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4719 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4720}
3659 4721
3660void 4722void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4723ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4724{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4725 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4726
3665 if (expect_false (!once)) 4727 if (expect_false (!once))
3666 { 4728 {
… …
3687} 4749}
3688 4750
3689/*****************************************************************************/ 4751/*****************************************************************************/
3690 4752
3691#if EV_WALK_ENABLE 4753#if EV_WALK_ENABLE
3692void 4754void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4755ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4756{
3695 int i, j; 4757 int i, j;
3696 ev_watcher_list *wl, *wn; 4758 ev_watcher_list *wl, *wn;
3697 4759
3698 if (types & (EV_IO | EV_EMBED)) 4760 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4803 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4804#endif
3743 4805
3744#if EV_IDLE_ENABLE 4806#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4807 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4808 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4809 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4810 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4811#endif
3750 4812
3751#if EV_FORK_ENABLE 4813#if EV_FORK_ENABLE
… …
3804 4866
3805#if EV_MULTIPLICITY 4867#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4868 #include "ev_wrap.h"
3807#endif 4869#endif
3808 4870
3809#ifdef __cplusplus
3810}
3811#endif
3812

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