ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC vs.
Revision 1.460 by root, Tue Oct 29 12:53:38 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 247#endif
235/* but consider reporting it, too! :) */ 248
236# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
237#endif 251#endif
238 252
239#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 256# else
243# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
244# endif 258# endif
245#endif 259#endif
246 260
247#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 264# else
251# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
252# endif 266# endif
253#endif 267#endif
… …
340 354
341#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 357#endif
344 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 378# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
353# else 383# else
… …
356# endif 386# endif
357#endif 387#endif
358 388
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 390
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
370#endif 394#endif
371 395
… …
378# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
380#endif 404#endif
381 405
382#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 409# include <sys/select.h>
385# endif 410# endif
386#endif 411#endif
387 412
388#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 414# include <sys/statfs.h>
391# include <sys/inotify.h> 415# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
396# endif 420# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 421#endif
402 422
403#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 425# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
412# else 432# else
413# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
414# endif 434# endif
415# endif 435# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 437#endif
424 438
425#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 441# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
434# else 448# else
435# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
436# endif 450# endif
437# endif 451# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 453
443struct signalfd_siginfo 454struct signalfd_siginfo
444{ 455{
445 uint32_t ssi_signo; 456 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
447}; 458};
448# ifdef __cplusplus
449}
450# endif
451#endif 459#endif
452 460
453/**/ 461/**/
454 462
455#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
… …
457#else 465#else
458# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
459#endif 467#endif
460 468
461/* 469/*
462 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 472 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 475
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 478
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2012 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;
477#if __GNUC__ >= 4 526 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
479# 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
480#else 542#else
481# define expect(expr,value) (expr) 543 #include <inttypes.h>
482# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
484# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
485# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __x86_64 || _M_AMD64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
486#endif 557 #endif
558#endif
487 559
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_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
591/*****************************************************************************/
592
593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
595
596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0)
602#endif
603
604#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
606 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
645 #endif
646 #endif
647#endif
648
649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
670 #elif defined _WIN32
671 #include <WinNT.h>
672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
677 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
678 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync ()
680 #endif
681#endif
682
683#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* we assume that these memory fences work on all variables/all memory accesses, */
686 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h>
688 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
689 /* any fence other than seq_cst, which isn't very efficient for us. */
690 /* Why that is, we don't know - either the C11 memory model is quite useless */
691 /* for most usages, or gcc and clang have a bug */
692 /* I *currently* lean towards the latter, and inefficiently implement */
693 /* all three of ecb's fences as a seq_cst fence */
694 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
695 #endif
696#endif
697
698#ifndef ECB_MEMORY_FENCE
699 #if !ECB_AVOID_PTHREADS
700 /*
701 * if you get undefined symbol references to pthread_mutex_lock,
702 * or failure to find pthread.h, then you should implement
703 * the ECB_MEMORY_FENCE operations for your cpu/compiler
704 * OR provide pthread.h and link against the posix thread library
705 * of your system.
706 */
707 #include <pthread.h>
708 #define ECB_NEEDS_PTHREADS 1
709 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
710
711 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
712 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
713 #endif
714#endif
715
716#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
717 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
718#endif
719
720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
722#endif
723
724/*****************************************************************************/
725
726#if __cplusplus
727 #define ecb_inline static inline
728#elif ECB_GCC_VERSION(2,5)
729 #define ecb_inline static __inline__
730#elif ECB_C99
731 #define ecb_inline static inline
732#else
733 #define ecb_inline static
734#endif
735
736#if ECB_GCC_VERSION(3,3)
737 #define ecb_restrict __restrict__
738#elif ECB_C99
739 #define ecb_restrict restrict
740#else
741 #define ecb_restrict
742#endif
743
744typedef int ecb_bool;
745
746#define ECB_CONCAT_(a, b) a ## b
747#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
748#define ECB_STRINGIFY_(a) # a
749#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
750
751#define ecb_function_ ecb_inline
752
753#if ECB_GCC_VERSION(3,1)
754 #define ecb_attribute(attrlist) __attribute__(attrlist)
755 #define ecb_is_constant(expr) __builtin_constant_p (expr)
756 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
757 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
758#else
759 #define ecb_attribute(attrlist)
760 #define ecb_is_constant(expr) 0
761 #define ecb_expect(expr,value) (expr)
762 #define ecb_prefetch(addr,rw,locality)
763#endif
764
765/* no emulation for ecb_decltype */
766#if ECB_GCC_VERSION(4,5)
767 #define ecb_decltype(x) __decltype(x)
768#elif ECB_GCC_VERSION(3,0)
769 #define ecb_decltype(x) __typeof(x)
770#endif
771
772#define ecb_noinline ecb_attribute ((__noinline__))
773#define ecb_unused ecb_attribute ((__unused__))
774#define ecb_const ecb_attribute ((__const__))
775#define ecb_pure ecb_attribute ((__pure__))
776
777#if ECB_C11
778 #define ecb_noreturn _Noreturn
779#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif
782
783#if ECB_GCC_VERSION(4,3)
784 #define ecb_artificial ecb_attribute ((__artificial__))
785 #define ecb_hot ecb_attribute ((__hot__))
786 #define ecb_cold ecb_attribute ((__cold__))
787#else
788 #define ecb_artificial
789 #define ecb_hot
790 #define ecb_cold
791#endif
792
793/* put around conditional expressions if you are very sure that the */
794/* expression is mostly true or mostly false. note that these return */
795/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 796#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 797#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
798/* for compatibility to the rest of the world */
799#define ecb_likely(expr) ecb_expect_true (expr)
800#define ecb_unlikely(expr) ecb_expect_false (expr)
801
802/* count trailing zero bits and count # of one bits */
803#if ECB_GCC_VERSION(3,4)
804 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
805 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
806 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
807 #define ecb_ctz32(x) __builtin_ctz (x)
808 #define ecb_ctz64(x) __builtin_ctzll (x)
809 #define ecb_popcount32(x) __builtin_popcount (x)
810 /* no popcountll */
811#else
812 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
813 ecb_function_ int
814 ecb_ctz32 (uint32_t x)
815 {
816 int r = 0;
817
818 x &= ~x + 1; /* this isolates the lowest bit */
819
820#if ECB_branchless_on_i386
821 r += !!(x & 0xaaaaaaaa) << 0;
822 r += !!(x & 0xcccccccc) << 1;
823 r += !!(x & 0xf0f0f0f0) << 2;
824 r += !!(x & 0xff00ff00) << 3;
825 r += !!(x & 0xffff0000) << 4;
826#else
827 if (x & 0xaaaaaaaa) r += 1;
828 if (x & 0xcccccccc) r += 2;
829 if (x & 0xf0f0f0f0) r += 4;
830 if (x & 0xff00ff00) r += 8;
831 if (x & 0xffff0000) r += 16;
832#endif
833
834 return r;
835 }
836
837 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
838 ecb_function_ int
839 ecb_ctz64 (uint64_t x)
840 {
841 int shift = x & 0xffffffffU ? 0 : 32;
842 return ecb_ctz32 (x >> shift) + shift;
843 }
844
845 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
846 ecb_function_ int
847 ecb_popcount32 (uint32_t x)
848 {
849 x -= (x >> 1) & 0x55555555;
850 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
851 x = ((x >> 4) + x) & 0x0f0f0f0f;
852 x *= 0x01010101;
853
854 return x >> 24;
855 }
856
857 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
858 ecb_function_ int ecb_ld32 (uint32_t x)
859 {
860 int r = 0;
861
862 if (x >> 16) { x >>= 16; r += 16; }
863 if (x >> 8) { x >>= 8; r += 8; }
864 if (x >> 4) { x >>= 4; r += 4; }
865 if (x >> 2) { x >>= 2; r += 2; }
866 if (x >> 1) { r += 1; }
867
868 return r;
869 }
870
871 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
872 ecb_function_ int ecb_ld64 (uint64_t x)
873 {
874 int r = 0;
875
876 if (x >> 32) { x >>= 32; r += 32; }
877
878 return r + ecb_ld32 (x);
879 }
880#endif
881
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
883ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
884ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
885ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
886
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
889{
890 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892}
893
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
896{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8);
901
902 return x;
903}
904
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
907{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
912 x = ( x >> 16 ) | ( x << 16);
913
914 return x;
915}
916
917/* popcount64 is only available on 64 bit cpus as gcc builtin */
918/* so for this version we are lazy */
919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
920ecb_function_ int
921ecb_popcount64 (uint64_t x)
922{
923 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
924}
925
926ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
927ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
928ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
929ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
930ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
931ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
932ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
933ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
934
935ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
936ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
937ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
938ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
939ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
940ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
941ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
942ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
943
944#if ECB_GCC_VERSION(4,3)
945 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
946 #define ecb_bswap32(x) __builtin_bswap32 (x)
947 #define ecb_bswap64(x) __builtin_bswap64 (x)
948#else
949 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
950 ecb_function_ uint16_t
951 ecb_bswap16 (uint16_t x)
952 {
953 return ecb_rotl16 (x, 8);
954 }
955
956 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
957 ecb_function_ uint32_t
958 ecb_bswap32 (uint32_t x)
959 {
960 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
961 }
962
963 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
964 ecb_function_ uint64_t
965 ecb_bswap64 (uint64_t x)
966 {
967 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
968 }
969#endif
970
971#if ECB_GCC_VERSION(4,5)
972 #define ecb_unreachable() __builtin_unreachable ()
973#else
974 /* this seems to work fine, but gcc always emits a warning for it :/ */
975 ecb_inline void ecb_unreachable (void) ecb_noreturn;
976 ecb_inline void ecb_unreachable (void) { }
977#endif
978
979/* try to tell the compiler that some condition is definitely true */
980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
981
982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
983ecb_inline unsigned char
984ecb_byteorder_helper (void)
985{
986 /* the union code still generates code under pressure in gcc, */
987 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */
990 /* is to avoid it in all cases, at least on common architectures */
991 /* or when using a recent enough gcc version (>= 4.6) */
992#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
993 return 0x44;
994#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
995 return 0x44;
996#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
997 return 0x11;
998#else
999 union
1000 {
1001 uint32_t i;
1002 uint8_t c;
1003 } u = { 0x11223344 };
1004 return u.c;
1005#endif
1006}
1007
1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1009ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1011ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1012
1013#if ECB_GCC_VERSION(3,0) || ECB_C99
1014 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1015#else
1016 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1017#endif
1018
1019#if __cplusplus
1020 template<typename T>
1021 static inline T ecb_div_rd (T val, T div)
1022 {
1023 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1024 }
1025 template<typename T>
1026 static inline T ecb_div_ru (T val, T div)
1027 {
1028 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1029 }
1030#else
1031 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1032 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1033#endif
1034
1035#if ecb_cplusplus_does_not_suck
1036 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1037 template<typename T, int N>
1038 static inline int ecb_array_length (const T (&arr)[N])
1039 {
1040 return N;
1041 }
1042#else
1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1044#endif
1045
1046/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048
1049/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \
1052 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \
1058 || defined __alpha__ \
1059 || defined __hppa__ \
1060 || defined __ia64__ \
1061 || defined __m68k__ \
1062 || defined __m88k__ \
1063 || defined __sh__ \
1064 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1065 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */
1067#else
1068 #define ECB_STDFP 0
1069#endif
1070
1071#ifndef ECB_NO_LIBM
1072
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074
1075 #ifdef NEN
1076 #define ECB_NAN NAN
1077 #else
1078 #define ECB_NAN INFINITY
1079 #endif
1080
1081 /* converts an ieee half/binary16 to a float */
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1083 ecb_function_ float
1084 ecb_binary16_to_float (uint16_t x)
1085 {
1086 int e = (x >> 10) & 0x1f;
1087 int m = x & 0x3ff;
1088 float r;
1089
1090 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN;
1093 else r = INFINITY;
1094
1095 return x & 0x8000 ? -r : r;
1096 }
1097
1098 /* convert a float to ieee single/binary32 */
1099 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1100 ecb_function_ uint32_t
1101 ecb_float_to_binary32 (float x)
1102 {
1103 uint32_t r;
1104
1105 #if ECB_STDFP
1106 memcpy (&r, &x, 4);
1107 #else
1108 /* slow emulation, works for anything but -0 */
1109 uint32_t m;
1110 int e;
1111
1112 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU;
1116
1117 m = frexpf (x, &e) * 0x1000000U;
1118
1119 r = m & 0x80000000U;
1120
1121 if (r)
1122 m = -m;
1123
1124 if (e <= -126)
1125 {
1126 m &= 0xffffffU;
1127 m >>= (-125 - e);
1128 e = -126;
1129 }
1130
1131 r |= (e + 126) << 23;
1132 r |= m & 0x7fffffU;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* converts an ieee single/binary32 to a float */
1139 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1140 ecb_function_ float
1141 ecb_binary32_to_float (uint32_t x)
1142 {
1143 float r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 4);
1147 #else
1148 /* emulation, only works for normals and subnormals and +0 */
1149 int neg = x >> 31;
1150 int e = (x >> 23) & 0xffU;
1151
1152 x &= 0x7fffffU;
1153
1154 if (e)
1155 x |= 0x800000U;
1156 else
1157 e = 1;
1158
1159 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1161
1162 r = neg ? -r : r;
1163 #endif
1164
1165 return r;
1166 }
1167
1168 /* convert a double to ieee double/binary64 */
1169 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1170 ecb_function_ uint64_t
1171 ecb_double_to_binary64 (double x)
1172 {
1173 uint64_t r;
1174
1175 #if ECB_STDFP
1176 memcpy (&r, &x, 8);
1177 #else
1178 /* slow emulation, works for anything but -0 */
1179 uint64_t m;
1180 int e;
1181
1182 if (x == 0e0 ) return 0x0000000000000000U;
1183 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1184 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1185 if (x != x ) return 0X7ff7ffffffffffffU;
1186
1187 m = frexp (x, &e) * 0x20000000000000U;
1188
1189 r = m & 0x8000000000000000;;
1190
1191 if (r)
1192 m = -m;
1193
1194 if (e <= -1022)
1195 {
1196 m &= 0x1fffffffffffffU;
1197 m >>= (-1021 - e);
1198 e = -1022;
1199 }
1200
1201 r |= ((uint64_t)(e + 1022)) << 52;
1202 r |= m & 0xfffffffffffffU;
1203 #endif
1204
1205 return r;
1206 }
1207
1208 /* converts an ieee double/binary64 to a double */
1209 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1210 ecb_function_ double
1211 ecb_binary64_to_double (uint64_t x)
1212 {
1213 double r;
1214
1215 #if ECB_STDFP
1216 memcpy (&r, &x, 8);
1217 #else
1218 /* emulation, only works for normals and subnormals and +0 */
1219 int neg = x >> 63;
1220 int e = (x >> 52) & 0x7ffU;
1221
1222 x &= 0xfffffffffffffU;
1223
1224 if (e)
1225 x |= 0x10000000000000U;
1226 else
1227 e = 1;
1228
1229 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1230 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1231
1232 r = neg ? -r : r;
1233 #endif
1234
1235 return r;
1236 }
1237
1238#endif
1239
1240#endif
1241
1242/* ECB.H END */
1243
1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1245/* if your architecture doesn't need memory fences, e.g. because it is
1246 * single-cpu/core, or if you use libev in a project that doesn't use libev
1247 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1248 * libev, in which cases the memory fences become nops.
1249 * alternatively, you can remove this #error and link against libpthread,
1250 * which will then provide the memory fences.
1251 */
1252# error "memory fences not defined for your architecture, please report"
1253#endif
1254
1255#ifndef ECB_MEMORY_FENCE
1256# define ECB_MEMORY_FENCE do { } while (0)
1257# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1258# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1259#endif
1260
1261#define expect_false(cond) ecb_expect_false (cond)
1262#define expect_true(cond) ecb_expect_true (cond)
1263#define noinline ecb_noinline
1264
490#define inline_size static inline 1265#define inline_size ecb_inline
491 1266
492#if EV_FEATURE_CODE 1267#if EV_FEATURE_CODE
493# define inline_speed static inline 1268# define inline_speed ecb_inline
494#else 1269#else
495# define inline_speed static noinline 1270# define inline_speed static noinline
496#endif 1271#endif
497 1272
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1273#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1312# include "ev_win32.c"
538#endif 1313#endif
539 1314
540/*****************************************************************************/ 1315/*****************************************************************************/
541 1316
1317/* define a suitable floor function (only used by periodics atm) */
1318
1319#if EV_USE_FLOOR
1320# include <math.h>
1321# define ev_floor(v) floor (v)
1322#else
1323
1324#include <float.h>
1325
1326/* a floor() replacement function, should be independent of ev_tstamp type */
1327static ev_tstamp noinline
1328ev_floor (ev_tstamp v)
1329{
1330 /* the choice of shift factor is not terribly important */
1331#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1332 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1333#else
1334 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1335#endif
1336
1337 /* argument too large for an unsigned long? */
1338 if (expect_false (v >= shift))
1339 {
1340 ev_tstamp f;
1341
1342 if (v == v - 1.)
1343 return v; /* very large number */
1344
1345 f = shift * ev_floor (v * (1. / shift));
1346 return f + ev_floor (v - f);
1347 }
1348
1349 /* special treatment for negative args? */
1350 if (expect_false (v < 0.))
1351 {
1352 ev_tstamp f = -ev_floor (-v);
1353
1354 return f - (f == v ? 0 : 1);
1355 }
1356
1357 /* fits into an unsigned long */
1358 return (unsigned long)v;
1359}
1360
1361#endif
1362
1363/*****************************************************************************/
1364
1365#ifdef __linux
1366# include <sys/utsname.h>
1367#endif
1368
1369static unsigned int noinline ecb_cold
1370ev_linux_version (void)
1371{
1372#ifdef __linux
1373 unsigned int v = 0;
1374 struct utsname buf;
1375 int i;
1376 char *p = buf.release;
1377
1378 if (uname (&buf))
1379 return 0;
1380
1381 for (i = 3+1; --i; )
1382 {
1383 unsigned int c = 0;
1384
1385 for (;;)
1386 {
1387 if (*p >= '0' && *p <= '9')
1388 c = c * 10 + *p++ - '0';
1389 else
1390 {
1391 p += *p == '.';
1392 break;
1393 }
1394 }
1395
1396 v = (v << 8) | c;
1397 }
1398
1399 return v;
1400#else
1401 return 0;
1402#endif
1403}
1404
1405/*****************************************************************************/
1406
542#if EV_AVOID_STDIO 1407#if EV_AVOID_STDIO
543static void noinline 1408static void noinline ecb_cold
544ev_printerr (const char *msg) 1409ev_printerr (const char *msg)
545{ 1410{
546 write (STDERR_FILENO, msg, strlen (msg)); 1411 write (STDERR_FILENO, msg, strlen (msg));
547} 1412}
548#endif 1413#endif
549 1414
550static void (*syserr_cb)(const char *msg); 1415static void (*syserr_cb)(const char *msg) EV_THROW;
551 1416
552void 1417void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1418ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1419{
555 syserr_cb = cb; 1420 syserr_cb = cb;
556} 1421}
557 1422
558static void noinline 1423static void noinline ecb_cold
559ev_syserr (const char *msg) 1424ev_syserr (const char *msg)
560{ 1425{
561 if (!msg) 1426 if (!msg)
562 msg = "(libev) system error"; 1427 msg = "(libev) system error";
563 1428
564 if (syserr_cb) 1429 if (syserr_cb)
565 syserr_cb (msg); 1430 syserr_cb (msg);
566 else 1431 else
567 { 1432 {
568#if EV_AVOID_STDIO 1433#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1434 ev_printerr (msg);
572 ev_printerr (": "); 1435 ev_printerr (": ");
573 ev_printerr (err); 1436 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1437 ev_printerr ("\n");
575#else 1438#else
576 perror (msg); 1439 perror (msg);
577#endif 1440#endif
578 abort (); 1441 abort ();
579 } 1442 }
580} 1443}
581 1444
582static void * 1445static void *
583ev_realloc_emul (void *ptr, long size) 1446ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1447{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1448 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1449 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1450 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it,
1452 * despite documenting it otherwise.
591 */ 1453 */
592 1454
593 if (size) 1455 if (size)
594 return realloc (ptr, size); 1456 return realloc (ptr, size);
595 1457
596 free (ptr); 1458 free (ptr);
597 return 0; 1459 return 0;
598#endif
599} 1460}
600 1461
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1463
603void 1464void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1465ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1466{
606 alloc = cb; 1467 alloc = cb;
607} 1468}
608 1469
609inline_speed void * 1470inline_speed void *
… …
612 ptr = alloc (ptr, size); 1473 ptr = alloc (ptr, size);
613 1474
614 if (!ptr && size) 1475 if (!ptr && size)
615 { 1476 {
616#if EV_AVOID_STDIO 1477#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1478 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1479#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1480 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1481#endif
621 abort (); 1482 abort ();
622 } 1483 }
623 1484
624 return ptr; 1485 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1502 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1503 unsigned char unused;
643#if EV_USE_EPOLL 1504#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1505 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1506#endif
646#if EV_SELECT_IS_WINSOCKET 1507#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1508 SOCKET handle;
1509#endif
1510#if EV_USE_IOCP
1511 OVERLAPPED or, ow;
648#endif 1512#endif
649} ANFD; 1513} ANFD;
650 1514
651/* stores the pending event set for a given watcher */ 1515/* stores the pending event set for a given watcher */
652typedef struct 1516typedef struct
… …
694 #undef VAR 1558 #undef VAR
695 }; 1559 };
696 #include "ev_wrap.h" 1560 #include "ev_wrap.h"
697 1561
698 static struct ev_loop default_loop_struct; 1562 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1563 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1564
701#else 1565#else
702 1566
703 ev_tstamp ev_rt_now; 1567 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1568 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1569 #include "ev_vars.h"
706 #undef VAR 1570 #undef VAR
707 1571
708 static int ev_default_loop_ptr; 1572 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1581# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1582# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1583# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1584#endif
721 1585
722#define EVUNLOOP_RECURSE 0x80 1586#define EVBREAK_RECURSE 0x80
723 1587
724/*****************************************************************************/ 1588/*****************************************************************************/
725 1589
726#ifndef EV_HAVE_EV_TIME 1590#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1591ev_tstamp
728ev_time (void) 1592ev_time (void) EV_THROW
729{ 1593{
730#if EV_USE_REALTIME 1594#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1595 if (expect_true (have_realtime))
732 { 1596 {
733 struct timespec ts; 1597 struct timespec ts;
… …
757 return ev_time (); 1621 return ev_time ();
758} 1622}
759 1623
760#if EV_MULTIPLICITY 1624#if EV_MULTIPLICITY
761ev_tstamp 1625ev_tstamp
762ev_now (EV_P) 1626ev_now (EV_P) EV_THROW
763{ 1627{
764 return ev_rt_now; 1628 return ev_rt_now;
765} 1629}
766#endif 1630#endif
767 1631
768void 1632void
769ev_sleep (ev_tstamp delay) 1633ev_sleep (ev_tstamp delay) EV_THROW
770{ 1634{
771 if (delay > 0.) 1635 if (delay > 0.)
772 { 1636 {
773#if EV_USE_NANOSLEEP 1637#if EV_USE_NANOSLEEP
774 struct timespec ts; 1638 struct timespec ts;
775 1639
776 EV_TS_SET (ts, delay); 1640 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1641 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1642#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1643 Sleep ((unsigned long)(delay * 1e3));
780#else 1644#else
781 struct timeval tv; 1645 struct timeval tv;
782 1646
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1647 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1666
803 do 1667 do
804 ncur <<= 1; 1668 ncur <<= 1;
805 while (cnt > ncur); 1669 while (cnt > ncur);
806 1670
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1671 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1672 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1673 {
810 ncur *= elem; 1674 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1675 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1676 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1678 }
815 1679
816 return ncur; 1680 return ncur;
817} 1681}
818 1682
819static noinline void * 1683static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1684array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1685{
822 *cur = array_nextsize (elem, *cur, cnt); 1686 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1687 return ev_realloc (base, elem * *cur);
824} 1688}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1691 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1692
829#define array_needsize(type,base,cur,cnt,init) \ 1693#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1694 if (expect_false ((cnt) > (cur))) \
831 { \ 1695 { \
832 int ocur_ = (cur); \ 1696 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1697 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1698 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1699 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1700 }
837 1701
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1719pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1720{
857} 1721}
858 1722
859void noinline 1723void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1725{
862 W w_ = (W)w; 1726 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1727 int pri = ABSPRI (w_);
864 1728
865 if (expect_false (w_->pending)) 1729 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1733 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1735 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1736 pendings [pri][w_->pending - 1].events = revents;
873 } 1737 }
1738
1739 pendingpri = NUMPRI - 1;
874} 1740}
875 1741
876inline_speed void 1742inline_speed void
877feed_reverse (EV_P_ W w) 1743feed_reverse (EV_P_ W w)
878{ 1744{
… …
924 if (expect_true (!anfd->reify)) 1790 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1791 fd_event_nocheck (EV_A_ fd, revents);
926} 1792}
927 1793
928void 1794void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1796{
931 if (fd >= 0 && fd < anfdmax) 1797 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1798 fd_event_nocheck (EV_A_ fd, revents);
933} 1799}
934 1800
… …
937inline_size void 1803inline_size void
938fd_reify (EV_P) 1804fd_reify (EV_P)
939{ 1805{
940 int i; 1806 int i;
941 1807
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 for (i = 0; i < fdchangecnt; ++i)
1810 {
1811 int fd = fdchanges [i];
1812 ANFD *anfd = anfds + fd;
1813
1814 if (anfd->reify & EV__IOFDSET && anfd->head)
1815 {
1816 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1817
1818 if (handle != anfd->handle)
1819 {
1820 unsigned long arg;
1821
1822 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1823
1824 /* handle changed, but fd didn't - we need to do it in two steps */
1825 backend_modify (EV_A_ fd, anfd->events, 0);
1826 anfd->events = 0;
1827 anfd->handle = handle;
1828 }
1829 }
1830 }
1831#endif
1832
942 for (i = 0; i < fdchangecnt; ++i) 1833 for (i = 0; i < fdchangecnt; ++i)
943 { 1834 {
944 int fd = fdchanges [i]; 1835 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1836 ANFD *anfd = anfds + fd;
946 ev_io *w; 1837 ev_io *w;
947 1838
948 unsigned char events = 0; 1839 unsigned char o_events = anfd->events;
1840 unsigned char o_reify = anfd->reify;
949 1841
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1842 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1843
953#if EV_SELECT_IS_WINSOCKET 1844 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1845 {
956 unsigned long arg; 1846 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1847
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1848 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1849 anfd->events |= (unsigned char)w->events;
1850
1851 if (o_events != anfd->events)
1852 o_reify = EV__IOFDSET; /* actually |= */
959 } 1853 }
960#endif
961 1854
962 { 1855 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 1856 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1857 }
973 1858
974 fdchangecnt = 0; 1859 fdchangecnt = 0;
975} 1860}
976 1861
… …
988 fdchanges [fdchangecnt - 1] = fd; 1873 fdchanges [fdchangecnt - 1] = fd;
989 } 1874 }
990} 1875}
991 1876
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1877/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1878inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1879fd_kill (EV_P_ int fd)
995{ 1880{
996 ev_io *w; 1881 ev_io *w;
997 1882
998 while ((w = (ev_io *)anfds [fd].head)) 1883 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1886 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1887 }
1003} 1888}
1004 1889
1005/* check whether the given fd is actually valid, for error recovery */ 1890/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1891inline_size int ecb_cold
1007fd_valid (int fd) 1892fd_valid (int fd)
1008{ 1893{
1009#ifdef _WIN32 1894#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1895 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1896#else
1012 return fcntl (fd, F_GETFD) != -1; 1897 return fcntl (fd, F_GETFD) != -1;
1013#endif 1898#endif
1014} 1899}
1015 1900
1016/* called on EBADF to verify fds */ 1901/* called on EBADF to verify fds */
1017static void noinline 1902static void noinline ecb_cold
1018fd_ebadf (EV_P) 1903fd_ebadf (EV_P)
1019{ 1904{
1020 int fd; 1905 int fd;
1021 1906
1022 for (fd = 0; fd < anfdmax; ++fd) 1907 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1909 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1910 fd_kill (EV_A_ fd);
1026} 1911}
1027 1912
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1913/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1914static void noinline ecb_cold
1030fd_enomem (EV_P) 1915fd_enomem (EV_P)
1031{ 1916{
1032 int fd; 1917 int fd;
1033 1918
1034 for (fd = anfdmax; fd--; ) 1919 for (fd = anfdmax; fd--; )
… …
1229 2114
1230/*****************************************************************************/ 2115/*****************************************************************************/
1231 2116
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2117#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2118
1234static void noinline 2119static void noinline ecb_cold
1235evpipe_init (EV_P) 2120evpipe_init (EV_P)
1236{ 2121{
1237 if (!ev_is_active (&pipe_w)) 2122 if (!ev_is_active (&pipe_w))
1238 { 2123 {
2124 int fds [2];
2125
1239# if EV_USE_EVENTFD 2126# if EV_USE_EVENTFD
2127 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2128 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2129 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2130 fds [1] = eventfd (0, 0);
1243 2131
1244 if (evfd >= 0) 2132 if (fds [1] < 0)
2133# endif
1245 { 2134 {
2135 while (pipe (fds))
2136 ev_syserr ("(libev) error creating signal/async pipe");
2137
2138 fd_intern (fds [0]);
2139 }
2140
1246 evpipe [0] = -1; 2141 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2142
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2143 if (evpipe [1] < 0)
2144 evpipe [1] = fds [1]; /* first call, set write fd */
2145 else
2146 {
2147 /* on subsequent calls, do not change evpipe [1] */
2148 /* so that evpipe_write can always rely on its value. */
2149 /* this branch does not do anything sensible on windows, */
2150 /* so must not be executed on windows */
2151
2152 dup2 (fds [1], evpipe [1]);
2153 close (fds [1]);
2154 }
2155
2156 fd_intern (evpipe [1]);
2157
2158 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2159 ev_io_start (EV_A_ &pipe_w);
2160 ev_unref (EV_A); /* watcher should not keep loop alive */
2161 }
2162}
2163
2164inline_speed void
2165evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2166{
2167 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2168
2169 if (expect_true (*flag))
2170 return;
2171
2172 *flag = 1;
2173 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2174
2175 pipe_write_skipped = 1;
2176
2177 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2178
2179 if (pipe_write_wanted)
2180 {
2181 int old_errno;
2182
2183 pipe_write_skipped = 0;
2184 ECB_MEMORY_FENCE_RELEASE;
2185
2186 old_errno = errno; /* save errno because write will clobber it */
2187
2188#if EV_USE_EVENTFD
2189 if (evpipe [0] < 0)
2190 {
2191 uint64_t counter = 1;
2192 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2193 }
1250 else 2194 else
1251# endif 2195#endif
1252 { 2196 {
1253 while (pipe (evpipe)) 2197#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2198 WSABUF buf;
1255 2199 DWORD sent;
1256 fd_intern (evpipe [0]); 2200 buf.buf = &buf;
1257 fd_intern (evpipe [1]); 2201 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2202 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2203#else
2204 write (evpipe [1], &(evpipe [1]), 1);
2205#endif
1259 } 2206 }
1260
1261 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 }
1264}
1265
1266inline_size void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{
1269 if (!*flag)
1270 {
1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275
1276#if EV_USE_EVENTFD
1277 if (evfd >= 0)
1278 {
1279 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t));
1281 }
1282 else
1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1289 write (evpipe [1], &dummy, 1);
1290 2207
1291 errno = old_errno; 2208 errno = old_errno;
1292 } 2209 }
1293} 2210}
1294 2211
… …
1297static void 2214static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2215pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2216{
1300 int i; 2217 int i;
1301 2218
2219 if (revents & EV_READ)
2220 {
1302#if EV_USE_EVENTFD 2221#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2222 if (evpipe [0] < 0)
1304 { 2223 {
1305 uint64_t counter; 2224 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2225 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2226 }
1308 else 2227 else
1309#endif 2228#endif
1310 { 2229 {
1311 char dummy; 2230 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2231#ifdef _WIN32
2232 WSABUF buf;
2233 DWORD recvd;
2234 DWORD flags = 0;
2235 buf.buf = dummy;
2236 buf.len = sizeof (dummy);
2237 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2238#else
1313 read (evpipe [0], &dummy, 1); 2239 read (evpipe [0], &dummy, sizeof (dummy));
2240#endif
2241 }
1314 } 2242 }
1315 2243
2244 pipe_write_skipped = 0;
2245
2246 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2247
2248#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2249 if (sig_pending)
1317 { 2250 {
1318 sig_pending = 0; 2251 sig_pending = 0;
2252
2253 ECB_MEMORY_FENCE;
1319 2254
1320 for (i = EV_NSIG - 1; i--; ) 2255 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2256 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2257 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2258 }
2259#endif
1324 2260
1325#if EV_ASYNC_ENABLE 2261#if EV_ASYNC_ENABLE
1326 if (async_pending) 2262 if (async_pending)
1327 { 2263 {
1328 async_pending = 0; 2264 async_pending = 0;
2265
2266 ECB_MEMORY_FENCE;
1329 2267
1330 for (i = asynccnt; i--; ) 2268 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2269 if (asyncs [i]->sent)
1332 { 2270 {
1333 asyncs [i]->sent = 0; 2271 asyncs [i]->sent = 0;
2272 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2273 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2274 }
1336 } 2275 }
1337#endif 2276#endif
1338} 2277}
1339 2278
1340/*****************************************************************************/ 2279/*****************************************************************************/
1341 2280
2281void
2282ev_feed_signal (int signum) EV_THROW
2283{
2284#if EV_MULTIPLICITY
2285 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE;
2287 EV_A = signals [signum - 1].loop;
2288
2289 if (!EV_A)
2290 return;
2291#endif
2292
2293 signals [signum - 1].pending = 1;
2294 evpipe_write (EV_A_ &sig_pending);
2295}
2296
1342static void 2297static void
1343ev_sighandler (int signum) 2298ev_sighandler (int signum)
1344{ 2299{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2300#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2301 signal (signum, ev_sighandler);
1351#endif 2302#endif
1352 2303
1353 signals [signum - 1].pending = 1; 2304 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2305}
1356 2306
1357void noinline 2307void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2308ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2309{
1360 WL w; 2310 WL w;
1361 2311
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2312 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2313 return;
1364 2314
1365 --signum; 2315 --signum;
1366 2316
1367#if EV_MULTIPLICITY 2317#if EV_MULTIPLICITY
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2321 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2322 return;
1373#endif 2323#endif
1374 2324
1375 signals [signum].pending = 0; 2325 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE;
1376 2327
1377 for (w = signals [signum].head; w; w = w->next) 2328 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2329 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2330}
1380 2331
… …
1459 2410
1460#endif 2411#endif
1461 2412
1462/*****************************************************************************/ 2413/*****************************************************************************/
1463 2414
2415#if EV_USE_IOCP
2416# include "ev_iocp.c"
2417#endif
1464#if EV_USE_PORT 2418#if EV_USE_PORT
1465# include "ev_port.c" 2419# include "ev_port.c"
1466#endif 2420#endif
1467#if EV_USE_KQUEUE 2421#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2422# include "ev_kqueue.c"
… …
1475#endif 2429#endif
1476#if EV_USE_SELECT 2430#if EV_USE_SELECT
1477# include "ev_select.c" 2431# include "ev_select.c"
1478#endif 2432#endif
1479 2433
1480int 2434int ecb_cold
1481ev_version_major (void) 2435ev_version_major (void) EV_THROW
1482{ 2436{
1483 return EV_VERSION_MAJOR; 2437 return EV_VERSION_MAJOR;
1484} 2438}
1485 2439
1486int 2440int ecb_cold
1487ev_version_minor (void) 2441ev_version_minor (void) EV_THROW
1488{ 2442{
1489 return EV_VERSION_MINOR; 2443 return EV_VERSION_MINOR;
1490} 2444}
1491 2445
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2446/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2447int inline_size ecb_cold
1494enable_secure (void) 2448enable_secure (void)
1495{ 2449{
1496#ifdef _WIN32 2450#ifdef _WIN32
1497 return 0; 2451 return 0;
1498#else 2452#else
1499 return getuid () != geteuid () 2453 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2454 || getgid () != getegid ();
1501#endif 2455#endif
1502} 2456}
1503 2457
1504unsigned int 2458unsigned int ecb_cold
1505ev_supported_backends (void) 2459ev_supported_backends (void) EV_THROW
1506{ 2460{
1507 unsigned int flags = 0; 2461 unsigned int flags = 0;
1508 2462
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2467 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2468
1515 return flags; 2469 return flags;
1516} 2470}
1517 2471
1518unsigned int 2472unsigned int ecb_cold
1519ev_recommended_backends (void) 2473ev_recommended_backends (void) EV_THROW
1520{ 2474{
1521 unsigned int flags = ev_supported_backends (); 2475 unsigned int flags = ev_supported_backends ();
1522 2476
1523#ifndef __NetBSD__ 2477#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2478 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2489#endif
1536 2490
1537 return flags; 2491 return flags;
1538} 2492}
1539 2493
2494unsigned int ecb_cold
2495ev_embeddable_backends (void) EV_THROW
2496{
2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2498
2499 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2500 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2501 flags &= ~EVBACKEND_EPOLL;
2502
2503 return flags;
2504}
2505
1540unsigned int 2506unsigned int
1541ev_embeddable_backends (void)
1542{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */
1547 flags &= ~EVBACKEND_EPOLL;
1548
1549 return flags;
1550}
1551
1552unsigned int
1553ev_backend (EV_P) 2507ev_backend (EV_P) EV_THROW
1554{ 2508{
1555 return backend; 2509 return backend;
1556} 2510}
1557 2511
1558#if EV_FEATURE_API 2512#if EV_FEATURE_API
1559unsigned int 2513unsigned int
1560ev_iteration (EV_P) 2514ev_iteration (EV_P) EV_THROW
1561{ 2515{
1562 return loop_count; 2516 return loop_count;
1563} 2517}
1564 2518
1565unsigned int 2519unsigned int
1566ev_depth (EV_P) 2520ev_depth (EV_P) EV_THROW
1567{ 2521{
1568 return loop_depth; 2522 return loop_depth;
1569} 2523}
1570 2524
1571void 2525void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2527{
1574 io_blocktime = interval; 2528 io_blocktime = interval;
1575} 2529}
1576 2530
1577void 2531void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2533{
1580 timeout_blocktime = interval; 2534 timeout_blocktime = interval;
1581} 2535}
1582 2536
1583void 2537void
1584ev_set_userdata (EV_P_ void *data) 2538ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2539{
1586 userdata = data; 2540 userdata = data;
1587} 2541}
1588 2542
1589void * 2543void *
1590ev_userdata (EV_P) 2544ev_userdata (EV_P) EV_THROW
1591{ 2545{
1592 return userdata; 2546 return userdata;
1593} 2547}
1594 2548
2549void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2551{
1597 invoke_cb = invoke_pending_cb; 2552 invoke_cb = invoke_pending_cb;
1598} 2553}
1599 2554
2555void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2557{
1602 release_cb = release; 2558 release_cb = release;
1603 acquire_cb = acquire; 2559 acquire_cb = acquire;
1604} 2560}
1605#endif 2561#endif
1606 2562
1607/* initialise a loop structure, must be zero-initialised */ 2563/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2564static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2565loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2566{
1611 if (!backend) 2567 if (!backend)
1612 { 2568 {
2569 origflags = flags;
2570
1613#if EV_USE_REALTIME 2571#if EV_USE_REALTIME
1614 if (!have_realtime) 2572 if (!have_realtime)
1615 { 2573 {
1616 struct timespec ts; 2574 struct timespec ts;
1617 2575
… …
1639 if (!(flags & EVFLAG_NOENV) 2597 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2598 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2599 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2600 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2601
1644 ev_rt_now = ev_time (); 2602 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2603 mn_now = get_clock ();
1646 now_floor = mn_now; 2604 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2605 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2606#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2607 invoke_cb = ev_invoke_pending;
1650#endif 2608#endif
1651 2609
1652 io_blocktime = 0.; 2610 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2611 timeout_blocktime = 0.;
1654 backend = 0; 2612 backend = 0;
1655 backend_fd = -1; 2613 backend_fd = -1;
1656 sig_pending = 0; 2614 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2615#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2616 async_pending = 0;
1659#endif 2617#endif
2618 pipe_write_skipped = 0;
2619 pipe_write_wanted = 0;
2620 evpipe [0] = -1;
2621 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 2622#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2624#endif
1663#if EV_USE_SIGNALFD 2625#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2627#endif
1666 2628
1667 if (!(flags & 0x0000ffffU)) 2629 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2630 flags |= ev_recommended_backends ();
1669 2631
2632#if EV_USE_IOCP
2633 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2634#endif
1670#if EV_USE_PORT 2635#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2636 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2637#endif
1673#if EV_USE_KQUEUE 2638#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2656#endif
1692 } 2657 }
1693} 2658}
1694 2659
1695/* free up a loop structure */ 2660/* free up a loop structure */
1696static void noinline 2661void ecb_cold
1697loop_destroy (EV_P) 2662ev_loop_destroy (EV_P)
1698{ 2663{
1699 int i; 2664 int i;
2665
2666#if EV_MULTIPLICITY
2667 /* mimic free (0) */
2668 if (!EV_A)
2669 return;
2670#endif
2671
2672#if EV_CLEANUP_ENABLE
2673 /* queue cleanup watchers (and execute them) */
2674 if (expect_false (cleanupcnt))
2675 {
2676 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2677 EV_INVOKE_PENDING;
2678 }
2679#endif
2680
2681#if EV_CHILD_ENABLE
2682 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2683 {
2684 ev_ref (EV_A); /* child watcher */
2685 ev_signal_stop (EV_A_ &childev);
2686 }
2687#endif
1700 2688
1701 if (ev_is_active (&pipe_w)) 2689 if (ev_is_active (&pipe_w))
1702 { 2690 {
1703 /*ev_ref (EV_A);*/ 2691 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2692 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 2693
1706#if EV_USE_EVENTFD
1707 if (evfd >= 0)
1708 close (evfd);
1709#endif
1710
1711 if (evpipe [0] >= 0)
1712 {
1713 EV_WIN32_CLOSE_FD (evpipe [0]); 2694 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 2695 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 2696 }
1717 2697
1718#if EV_USE_SIGNALFD 2698#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 2699 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 2700 close (sigfd);
… …
1726#endif 2706#endif
1727 2707
1728 if (backend_fd >= 0) 2708 if (backend_fd >= 0)
1729 close (backend_fd); 2709 close (backend_fd);
1730 2710
2711#if EV_USE_IOCP
2712 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2713#endif
1731#if EV_USE_PORT 2714#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2715 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2716#endif
1734#if EV_USE_KQUEUE 2717#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2718 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2745 array_free (periodic, EMPTY);
1763#endif 2746#endif
1764#if EV_FORK_ENABLE 2747#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2748 array_free (fork, EMPTY);
1766#endif 2749#endif
2750#if EV_CLEANUP_ENABLE
2751 array_free (cleanup, EMPTY);
2752#endif
1767 array_free (prepare, EMPTY); 2753 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2754 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2755#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2756 array_free (async, EMPTY);
1771#endif 2757#endif
1772 2758
1773 backend = 0; 2759 backend = 0;
2760
2761#if EV_MULTIPLICITY
2762 if (ev_is_default_loop (EV_A))
2763#endif
2764 ev_default_loop_ptr = 0;
2765#if EV_MULTIPLICITY
2766 else
2767 ev_free (EV_A);
2768#endif
1774} 2769}
1775 2770
1776#if EV_USE_INOTIFY 2771#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2772inline_size void infy_fork (EV_P);
1778#endif 2773#endif
… …
1791#endif 2786#endif
1792#if EV_USE_INOTIFY 2787#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 2788 infy_fork (EV_A);
1794#endif 2789#endif
1795 2790
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 2792 if (ev_is_active (&pipe_w))
1797 { 2793 {
1798 /* this "locks" the handlers against writing to the pipe */ 2794 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 2795
1805 ev_ref (EV_A); 2796 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2797 ev_io_stop (EV_A_ &pipe_w);
1807 2798
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 2799 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 2800 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 2801
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 2802 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 2803 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 2805 }
2806#endif
1825 2807
1826 postfork = 0; 2808 postfork = 0;
1827} 2809}
1828 2810
1829#if EV_MULTIPLICITY 2811#if EV_MULTIPLICITY
1830 2812
1831struct ev_loop * 2813struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2814ev_loop_new (unsigned int flags) EV_THROW
1833{ 2815{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2817
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2818 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2819 loop_init (EV_A_ flags);
1838 2820
1839 if (ev_backend (EV_A)) 2821 if (ev_backend (EV_A))
1840 return EV_A; 2822 return EV_A;
1841 2823
2824 ev_free (EV_A);
1842 return 0; 2825 return 0;
1843} 2826}
1844 2827
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 2828#endif /* multiplicity */
1858 2829
1859#if EV_VERIFY 2830#if EV_VERIFY
1860static void noinline 2831static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2832verify_watcher (EV_P_ W w)
1862{ 2833{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2835
1865 if (w->pending) 2836 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2838}
1868 2839
1869static void noinline 2840static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2841verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2842{
1872 int i; 2843 int i;
1873 2844
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2845 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2850
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2851 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2852 }
1882} 2853}
1883 2854
1884static void noinline 2855static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2856array_verify (EV_P_ W *ws, int cnt)
1886{ 2857{
1887 while (cnt--) 2858 while (cnt--)
1888 { 2859 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2862 }
1892} 2863}
1893#endif 2864#endif
1894 2865
1895#if EV_FEATURE_API 2866#if EV_FEATURE_API
1896void 2867void ecb_cold
1897ev_verify (EV_P) 2868ev_verify (EV_P) EV_THROW
1898{ 2869{
1899#if EV_VERIFY 2870#if EV_VERIFY
1900 int i; 2871 int i;
1901 WL w; 2872 WL w, w2;
1902 2873
1903 assert (activecnt >= -1); 2874 assert (activecnt >= -1);
1904 2875
1905 assert (fdchangemax >= fdchangecnt); 2876 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2877 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2879
1909 assert (anfdmax >= 0); 2880 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2881 for (i = 0; i < anfdmax; ++i)
2882 {
2883 int j = 0;
2884
1911 for (w = anfds [i].head; w; w = w->next) 2885 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2886 {
1913 verify_watcher (EV_A_ (W)w); 2887 verify_watcher (EV_A_ (W)w);
2888
2889 if (j++ & 1)
2890 {
2891 assert (("libev: io watcher list contains a loop", w != w2));
2892 w2 = w2->next;
2893 }
2894
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2895 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2896 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2897 }
2898 }
1917 2899
1918 assert (timermax >= timercnt); 2900 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2901 verify_heap (EV_A_ timers, timercnt);
1920 2902
1921#if EV_PERIODIC_ENABLE 2903#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2918#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2919 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2920 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2921#endif
1940 2922
2923#if EV_CLEANUP_ENABLE
2924 assert (cleanupmax >= cleanupcnt);
2925 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2926#endif
2927
1941#if EV_ASYNC_ENABLE 2928#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2929 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2930 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2931#endif
1945 2932
… …
1962#endif 2949#endif
1963} 2950}
1964#endif 2951#endif
1965 2952
1966#if EV_MULTIPLICITY 2953#if EV_MULTIPLICITY
1967struct ev_loop * 2954struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2955#else
1970int 2956int
2957#endif
1971ev_default_loop (unsigned int flags) 2958ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2959{
1974 if (!ev_default_loop_ptr) 2960 if (!ev_default_loop_ptr)
1975 { 2961 {
1976#if EV_MULTIPLICITY 2962#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2963 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2982
1997 return ev_default_loop_ptr; 2983 return ev_default_loop_ptr;
1998} 2984}
1999 2985
2000void 2986void
2001ev_default_destroy (void) 2987ev_loop_fork (EV_P) EV_THROW
2002{ 2988{
2003#if EV_MULTIPLICITY 2989 postfork = 1;
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */
2025} 2990}
2026 2991
2027/*****************************************************************************/ 2992/*****************************************************************************/
2028 2993
2029void 2994void
… …
2031{ 2996{
2032 EV_CB_INVOKE ((W)w, revents); 2997 EV_CB_INVOKE ((W)w, revents);
2033} 2998}
2034 2999
2035unsigned int 3000unsigned int
2036ev_pending_count (EV_P) 3001ev_pending_count (EV_P) EV_THROW
2037{ 3002{
2038 int pri; 3003 int pri;
2039 unsigned int count = 0; 3004 unsigned int count = 0;
2040 3005
2041 for (pri = NUMPRI; pri--; ) 3006 for (pri = NUMPRI; pri--; )
… …
2045} 3010}
2046 3011
2047void noinline 3012void noinline
2048ev_invoke_pending (EV_P) 3013ev_invoke_pending (EV_P)
2049{ 3014{
2050 int pri; 3015 pendingpri = NUMPRI;
2051 3016
2052 for (pri = NUMPRI; pri--; ) 3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3018 {
3019 --pendingpri;
3020
2053 while (pendingcnt [pri]) 3021 while (pendingcnt [pendingpri])
2054 { 3022 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 3024
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059
2060 p->w->pending = 0; 3025 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 3026 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 3027 EV_FREQUENT_CHECK;
2063 } 3028 }
3029 }
2064} 3030}
2065 3031
2066#if EV_IDLE_ENABLE 3032#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3033/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3034/* only when higher priorities are idle" logic */
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3091 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3092 }
2127} 3093}
2128 3094
2129#if EV_PERIODIC_ENABLE 3095#if EV_PERIODIC_ENABLE
3096
3097static void noinline
3098periodic_recalc (EV_P_ ev_periodic *w)
3099{
3100 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3101 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3102
3103 /* the above almost always errs on the low side */
3104 while (at <= ev_rt_now)
3105 {
3106 ev_tstamp nat = at + w->interval;
3107
3108 /* when resolution fails us, we use ev_rt_now */
3109 if (expect_false (nat == at))
3110 {
3111 at = ev_rt_now;
3112 break;
3113 }
3114
3115 at = nat;
3116 }
3117
3118 ev_at (w) = at;
3119}
3120
2130/* make periodics pending */ 3121/* make periodics pending */
2131inline_size void 3122inline_size void
2132periodics_reify (EV_P) 3123periodics_reify (EV_P)
2133{ 3124{
2134 EV_FREQUENT_CHECK; 3125 EV_FREQUENT_CHECK;
2135 3126
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3127 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3128 {
2138 int feed_count = 0;
2139
2140 do 3129 do
2141 { 3130 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3132
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3142 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3143 downheap (periodics, periodiccnt, HEAP0);
2155 } 3144 }
2156 else if (w->interval) 3145 else if (w->interval)
2157 { 3146 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3147 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 3148 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3149 downheap (periodics, periodiccnt, HEAP0);
2174 } 3150 }
2175 else 3151 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3160 }
2185} 3161}
2186 3162
2187/* simply recalculate all periodics */ 3163/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3164/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3165static void noinline ecb_cold
2190periodics_reschedule (EV_P) 3166periodics_reschedule (EV_P)
2191{ 3167{
2192 int i; 3168 int i;
2193 3169
2194 /* adjust periodics after time jump */ 3170 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3174
2199 if (w->reschedule_cb) 3175 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3177 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3178 periodic_recalc (EV_A_ w);
2203 3179
2204 ANHE_at_cache (periodics [i]); 3180 ANHE_at_cache (periodics [i]);
2205 } 3181 }
2206 3182
2207 reheap (periodics, periodiccnt); 3183 reheap (periodics, periodiccnt);
2208} 3184}
2209#endif 3185#endif
2210 3186
2211/* adjust all timers by a given offset */ 3187/* adjust all timers by a given offset */
2212static void noinline 3188static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3189timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3190{
2215 int i; 3191 int i;
2216 3192
2217 for (i = 0; i < timercnt; ++i) 3193 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3230 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3231 * in the unlikely event of having been preempted here.
2256 */ 3232 */
2257 for (i = 4; --i; ) 3233 for (i = 4; --i; )
2258 { 3234 {
3235 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3236 rtmn_diff = ev_rt_now - mn_now;
2260 3237
3238 diff = odiff - rtmn_diff;
3239
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3240 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 3241 return; /* all is well */
2263 3242
2264 ev_rt_now = ev_time (); 3243 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3244 mn_now = get_clock ();
2266 now_floor = mn_now; 3245 now_floor = mn_now;
… …
2288 3267
2289 mn_now = ev_rt_now; 3268 mn_now = ev_rt_now;
2290 } 3269 }
2291} 3270}
2292 3271
2293void 3272int
2294ev_loop (EV_P_ int flags) 3273ev_run (EV_P_ int flags)
2295{ 3274{
2296#if EV_FEATURE_API 3275#if EV_FEATURE_API
2297 ++loop_depth; 3276 ++loop_depth;
2298#endif 3277#endif
2299 3278
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3279 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3280
2302 loop_done = EVUNLOOP_CANCEL; 3281 loop_done = EVBREAK_CANCEL;
2303 3282
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3284
2306 do 3285 do
2307 { 3286 {
… …
2350 /* calculate blocking time */ 3329 /* calculate blocking time */
2351 { 3330 {
2352 ev_tstamp waittime = 0.; 3331 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3332 ev_tstamp sleeptime = 0.;
2354 3333
3334 /* remember old timestamp for io_blocktime calculation */
3335 ev_tstamp prev_mn_now = mn_now;
3336
3337 /* update time to cancel out callback processing overhead */
3338 time_update (EV_A_ 1e100);
3339
3340 /* from now on, we want a pipe-wake-up */
3341 pipe_write_wanted = 1;
3342
3343 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3344
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3345 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3346 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3347 waittime = MAX_BLOCKTIME;
2364 3348
2365 if (timercnt) 3349 if (timercnt)
2366 { 3350 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3352 if (waittime > to) waittime = to;
2369 } 3353 }
2370 3354
2371#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3356 if (periodiccnt)
2373 { 3357 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3359 if (waittime > to) waittime = to;
2376 } 3360 }
2377#endif 3361#endif
2378 3362
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3363 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3364 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3365 waittime = timeout_blocktime;
3366
3367 /* at this point, we NEED to wait, so we have to ensure */
3368 /* to pass a minimum nonzero value to the backend */
3369 if (expect_false (waittime < backend_mintime))
3370 waittime = backend_mintime;
2382 3371
2383 /* extra check because io_blocktime is commonly 0 */ 3372 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3373 if (expect_false (io_blocktime))
2385 { 3374 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3376
2388 if (sleeptime > waittime - backend_fudge) 3377 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3378 sleeptime = waittime - backend_mintime;
2390 3379
2391 if (expect_true (sleeptime > 0.)) 3380 if (expect_true (sleeptime > 0.))
2392 { 3381 {
2393 ev_sleep (sleeptime); 3382 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3383 waittime -= sleeptime;
… …
2397 } 3386 }
2398 3387
2399#if EV_FEATURE_API 3388#if EV_FEATURE_API
2400 ++loop_count; 3389 ++loop_count;
2401#endif 3390#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3392 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3394
3395 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3396
3397 ECB_MEMORY_FENCE_ACQUIRE;
3398 if (pipe_write_skipped)
3399 {
3400 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3401 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3402 }
3403
2405 3404
2406 /* update ev_rt_now, do magic */ 3405 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3406 time_update (EV_A_ waittime + sleeptime);
2408 } 3407 }
2409 3408
… …
2427 EV_INVOKE_PENDING; 3426 EV_INVOKE_PENDING;
2428 } 3427 }
2429 while (expect_true ( 3428 while (expect_true (
2430 activecnt 3429 activecnt
2431 && !loop_done 3430 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3431 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3432 ));
2434 3433
2435 if (loop_done == EVUNLOOP_ONE) 3434 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3435 loop_done = EVBREAK_CANCEL;
2437 3436
2438#if EV_FEATURE_API 3437#if EV_FEATURE_API
2439 --loop_depth; 3438 --loop_depth;
2440#endif 3439#endif
3440
3441 return activecnt;
2441} 3442}
2442 3443
2443void 3444void
2444ev_unloop (EV_P_ int how) 3445ev_break (EV_P_ int how) EV_THROW
2445{ 3446{
2446 loop_done = how; 3447 loop_done = how;
2447} 3448}
2448 3449
2449void 3450void
2450ev_ref (EV_P) 3451ev_ref (EV_P) EV_THROW
2451{ 3452{
2452 ++activecnt; 3453 ++activecnt;
2453} 3454}
2454 3455
2455void 3456void
2456ev_unref (EV_P) 3457ev_unref (EV_P) EV_THROW
2457{ 3458{
2458 --activecnt; 3459 --activecnt;
2459} 3460}
2460 3461
2461void 3462void
2462ev_now_update (EV_P) 3463ev_now_update (EV_P) EV_THROW
2463{ 3464{
2464 time_update (EV_A_ 1e100); 3465 time_update (EV_A_ 1e100);
2465} 3466}
2466 3467
2467void 3468void
2468ev_suspend (EV_P) 3469ev_suspend (EV_P) EV_THROW
2469{ 3470{
2470 ev_now_update (EV_A); 3471 ev_now_update (EV_A);
2471} 3472}
2472 3473
2473void 3474void
2474ev_resume (EV_P) 3475ev_resume (EV_P) EV_THROW
2475{ 3476{
2476 ev_tstamp mn_prev = mn_now; 3477 ev_tstamp mn_prev = mn_now;
2477 3478
2478 ev_now_update (EV_A); 3479 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3480 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3519 w->pending = 0;
2519 } 3520 }
2520} 3521}
2521 3522
2522int 3523int
2523ev_clear_pending (EV_P_ void *w) 3524ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3525{
2525 W w_ = (W)w; 3526 W w_ = (W)w;
2526 int pending = w_->pending; 3527 int pending = w_->pending;
2527 3528
2528 if (expect_true (pending)) 3529 if (expect_true (pending))
… …
2561} 3562}
2562 3563
2563/*****************************************************************************/ 3564/*****************************************************************************/
2564 3565
2565void noinline 3566void noinline
2566ev_io_start (EV_P_ ev_io *w) 3567ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3568{
2568 int fd = w->fd; 3569 int fd = w->fd;
2569 3570
2570 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
2571 return; 3572 return;
… …
2577 3578
2578 ev_start (EV_A_ (W)w, 1); 3579 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3581 wlist_add (&anfds[fd].head, (WL)w);
2581 3582
3583 /* common bug, apparently */
3584 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3585
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3586 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3587 w->events &= ~EV__IOFDSET;
2584 3588
2585 EV_FREQUENT_CHECK; 3589 EV_FREQUENT_CHECK;
2586} 3590}
2587 3591
2588void noinline 3592void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3593ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3594{
2591 clear_pending (EV_A_ (W)w); 3595 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3596 if (expect_false (!ev_is_active (w)))
2593 return; 3597 return;
2594 3598
… …
2597 EV_FREQUENT_CHECK; 3601 EV_FREQUENT_CHECK;
2598 3602
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3603 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3604 ev_stop (EV_A_ (W)w);
2601 3605
2602 fd_change (EV_A_ w->fd, 1); 3606 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3607
2604 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
2605} 3609}
2606 3610
2607void noinline 3611void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3613{
2610 if (expect_false (ev_is_active (w))) 3614 if (expect_false (ev_is_active (w)))
2611 return; 3615 return;
2612 3616
2613 ev_at (w) += mn_now; 3617 ev_at (w) += mn_now;
… …
2627 3631
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3632 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3633}
2630 3634
2631void noinline 3635void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3637{
2634 clear_pending (EV_A_ (W)w); 3638 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3639 if (expect_false (!ev_is_active (w)))
2636 return; 3640 return;
2637 3641
… …
2657 3661
2658 EV_FREQUENT_CHECK; 3662 EV_FREQUENT_CHECK;
2659} 3663}
2660 3664
2661void noinline 3665void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3667{
2664 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3669
3670 clear_pending (EV_A_ (W)w);
2665 3671
2666 if (ev_is_active (w)) 3672 if (ev_is_active (w))
2667 { 3673 {
2668 if (w->repeat) 3674 if (w->repeat)
2669 { 3675 {
… …
2682 3688
2683 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
2684} 3690}
2685 3691
2686ev_tstamp 3692ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3694{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3695 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3696}
2691 3697
2692#if EV_PERIODIC_ENABLE 3698#if EV_PERIODIC_ENABLE
2693void noinline 3699void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3701{
2696 if (expect_false (ev_is_active (w))) 3702 if (expect_false (ev_is_active (w)))
2697 return; 3703 return;
2698 3704
2699 if (w->reschedule_cb) 3705 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3706 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3707 else if (w->interval)
2702 { 3708 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3709 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 3710 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3711 }
2707 else 3712 else
2708 ev_at (w) = w->offset; 3713 ev_at (w) = w->offset;
2709 3714
2710 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
… …
2720 3725
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3726 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3727}
2723 3728
2724void noinline 3729void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3731{
2727 clear_pending (EV_A_ (W)w); 3732 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3733 if (expect_false (!ev_is_active (w)))
2729 return; 3734 return;
2730 3735
… …
2748 3753
2749 EV_FREQUENT_CHECK; 3754 EV_FREQUENT_CHECK;
2750} 3755}
2751 3756
2752void noinline 3757void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3759{
2755 /* TODO: use adjustheap and recalculation */ 3760 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3761 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3762 ev_periodic_start (EV_A_ w);
2758} 3763}
… …
2763#endif 3768#endif
2764 3769
2765#if EV_SIGNAL_ENABLE 3770#if EV_SIGNAL_ENABLE
2766 3771
2767void noinline 3772void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3774{
2770 if (expect_false (ev_is_active (w))) 3775 if (expect_false (ev_is_active (w)))
2771 return; 3776 return;
2772 3777
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3778 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2775#if EV_MULTIPLICITY 3780#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 3781 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3782 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 3783
2779 signals [w->signum - 1].loop = EV_A; 3784 signals [w->signum - 1].loop = EV_A;
3785 ECB_MEMORY_FENCE_RELEASE;
2780#endif 3786#endif
2781 3787
2782 EV_FREQUENT_CHECK; 3788 EV_FREQUENT_CHECK;
2783 3789
2784#if EV_USE_SIGNALFD 3790#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 3837 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3838 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3839 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3840 sigaction (w->signum, &sa, 0);
2835 3841
3842 if (origflags & EVFLAG_NOSIGMASK)
3843 {
2836 sigemptyset (&sa.sa_mask); 3844 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3845 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3846 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3847 }
2839#endif 3848#endif
2840 } 3849 }
2841 3850
2842 EV_FREQUENT_CHECK; 3851 EV_FREQUENT_CHECK;
2843} 3852}
2844 3853
2845void noinline 3854void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3856{
2848 clear_pending (EV_A_ (W)w); 3857 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3858 if (expect_false (!ev_is_active (w)))
2850 return; 3859 return;
2851 3860
… …
2882#endif 3891#endif
2883 3892
2884#if EV_CHILD_ENABLE 3893#if EV_CHILD_ENABLE
2885 3894
2886void 3895void
2887ev_child_start (EV_P_ ev_child *w) 3896ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3897{
2889#if EV_MULTIPLICITY 3898#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3899 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3900#endif
2892 if (expect_false (ev_is_active (w))) 3901 if (expect_false (ev_is_active (w)))
… …
2899 3908
2900 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
2901} 3910}
2902 3911
2903void 3912void
2904ev_child_stop (EV_P_ ev_child *w) 3913ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3914{
2906 clear_pending (EV_A_ (W)w); 3915 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3916 if (expect_false (!ev_is_active (w)))
2908 return; 3917 return;
2909 3918
… …
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3945# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 3946
2938static void noinline 3947static void noinline
2939infy_add (EV_P_ ev_stat *w) 3948infy_add (EV_P_ ev_stat *w)
2940{ 3949{
2941 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3950 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3953 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 3954
2943 if (w->wd >= 0) 3955 if (w->wd >= 0)
2944 { 3956 {
2945 struct statfs sfs; 3957 struct statfs sfs;
2946 3958
… …
2950 3962
2951 if (!fs_2625) 3963 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3964 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 3965 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 3966 && (sfs.f_type == 0x1373 /* devfs */
3967 || sfs.f_type == 0x4006 /* fat */
3968 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 3969 || sfs.f_type == 0xEF53 /* ext2/3 */
3970 || sfs.f_type == 0x72b6 /* jffs2 */
3971 || sfs.f_type == 0x858458f6 /* ramfs */
3972 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 3973 || sfs.f_type == 0x3153464a /* jfs */
3974 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 3975 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 3976 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 3977 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3978 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 3979 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3980 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 3981 }
… …
2984 if (!pend || pend == path) 4002 if (!pend || pend == path)
2985 break; 4003 break;
2986 4004
2987 *pend = 0; 4005 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 4006 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 4007 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4008 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 4009 }
2992 } 4010 }
2993 4011
2994 if (w->wd >= 0) 4012 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4079 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4080 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4081 }
3064} 4082}
3065 4083
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 4084inline_size void ecb_cold
3099ev_check_2625 (EV_P) 4085ev_check_2625 (EV_P)
3100{ 4086{
3101 /* kernels < 2.6.25 are borked 4087 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4088 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4089 */
… …
3108} 4094}
3109 4095
3110inline_size int 4096inline_size int
3111infy_newfd (void) 4097infy_newfd (void)
3112{ 4098{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4099#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4100 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4101 if (fd >= 0)
3116 return fd; 4102 return fd;
3117#endif 4103#endif
3118 return inotify_init (); 4104 return inotify_init ();
… …
3193#else 4179#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4180# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4181#endif
3196 4182
3197void 4183void
3198ev_stat_stat (EV_P_ ev_stat *w) 4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 4185{
3200 if (lstat (w->path, &w->attr) < 0) 4186 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4187 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4188 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4189 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4228 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4229 }
3244} 4230}
3245 4231
3246void 4232void
3247ev_stat_start (EV_P_ ev_stat *w) 4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 4234{
3249 if (expect_false (ev_is_active (w))) 4235 if (expect_false (ev_is_active (w)))
3250 return; 4236 return;
3251 4237
3252 ev_stat_stat (EV_A_ w); 4238 ev_stat_stat (EV_A_ w);
… …
3273 4259
3274 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
3275} 4261}
3276 4262
3277void 4263void
3278ev_stat_stop (EV_P_ ev_stat *w) 4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 4265{
3280 clear_pending (EV_A_ (W)w); 4266 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4267 if (expect_false (!ev_is_active (w)))
3282 return; 4268 return;
3283 4269
… …
3299} 4285}
3300#endif 4286#endif
3301 4287
3302#if EV_IDLE_ENABLE 4288#if EV_IDLE_ENABLE
3303void 4289void
3304ev_idle_start (EV_P_ ev_idle *w) 4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4291{
3306 if (expect_false (ev_is_active (w))) 4292 if (expect_false (ev_is_active (w)))
3307 return; 4293 return;
3308 4294
3309 pri_adjust (EV_A_ (W)w); 4295 pri_adjust (EV_A_ (W)w);
… …
3322 4308
3323 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3324} 4310}
3325 4311
3326void 4312void
3327ev_idle_stop (EV_P_ ev_idle *w) 4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4314{
3329 clear_pending (EV_A_ (W)w); 4315 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4316 if (expect_false (!ev_is_active (w)))
3331 return; 4317 return;
3332 4318
… …
3346} 4332}
3347#endif 4333#endif
3348 4334
3349#if EV_PREPARE_ENABLE 4335#if EV_PREPARE_ENABLE
3350void 4336void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4338{
3353 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3354 return; 4340 return;
3355 4341
3356 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
… …
3361 4347
3362 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3363} 4349}
3364 4350
3365void 4351void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4353{
3368 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3370 return; 4356 return;
3371 4357
… …
3384} 4370}
3385#endif 4371#endif
3386 4372
3387#if EV_CHECK_ENABLE 4373#if EV_CHECK_ENABLE
3388void 4374void
3389ev_check_start (EV_P_ ev_check *w) 4375ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4376{
3391 if (expect_false (ev_is_active (w))) 4377 if (expect_false (ev_is_active (w)))
3392 return; 4378 return;
3393 4379
3394 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
… …
3399 4385
3400 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3401} 4387}
3402 4388
3403void 4389void
3404ev_check_stop (EV_P_ ev_check *w) 4390ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4391{
3406 clear_pending (EV_A_ (W)w); 4392 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4393 if (expect_false (!ev_is_active (w)))
3408 return; 4394 return;
3409 4395
… …
3422} 4408}
3423#endif 4409#endif
3424 4410
3425#if EV_EMBED_ENABLE 4411#if EV_EMBED_ENABLE
3426void noinline 4412void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4414{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4415 ev_run (w->other, EVRUN_NOWAIT);
3430} 4416}
3431 4417
3432static void 4418static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4419embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4420{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4422
3437 if (ev_cb (w)) 4423 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4424 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4425 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4426 ev_run (w->other, EVRUN_NOWAIT);
3441} 4427}
3442 4428
3443static void 4429static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4431{
… …
3449 EV_P = w->other; 4435 EV_P = w->other;
3450 4436
3451 while (fdchangecnt) 4437 while (fdchangecnt)
3452 { 4438 {
3453 fd_reify (EV_A); 4439 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4440 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4441 }
3456 } 4442 }
3457} 4443}
3458 4444
3459static void 4445static void
… …
3465 4451
3466 { 4452 {
3467 EV_P = w->other; 4453 EV_P = w->other;
3468 4454
3469 ev_loop_fork (EV_A); 4455 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4456 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4457 }
3472 4458
3473 ev_embed_start (EV_A_ w); 4459 ev_embed_start (EV_A_ w);
3474} 4460}
3475 4461
… …
3480 ev_idle_stop (EV_A_ idle); 4466 ev_idle_stop (EV_A_ idle);
3481} 4467}
3482#endif 4468#endif
3483 4469
3484void 4470void
3485ev_embed_start (EV_P_ ev_embed *w) 4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4472{
3487 if (expect_false (ev_is_active (w))) 4473 if (expect_false (ev_is_active (w)))
3488 return; 4474 return;
3489 4475
3490 { 4476 {
… …
3511 4497
3512 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
3513} 4499}
3514 4500
3515void 4501void
3516ev_embed_stop (EV_P_ ev_embed *w) 4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4503{
3518 clear_pending (EV_A_ (W)w); 4504 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4505 if (expect_false (!ev_is_active (w)))
3520 return; 4506 return;
3521 4507
… …
3531} 4517}
3532#endif 4518#endif
3533 4519
3534#if EV_FORK_ENABLE 4520#if EV_FORK_ENABLE
3535void 4521void
3536ev_fork_start (EV_P_ ev_fork *w) 4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4523{
3538 if (expect_false (ev_is_active (w))) 4524 if (expect_false (ev_is_active (w)))
3539 return; 4525 return;
3540 4526
3541 EV_FREQUENT_CHECK; 4527 EV_FREQUENT_CHECK;
… …
3546 4532
3547 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3548} 4534}
3549 4535
3550void 4536void
3551ev_fork_stop (EV_P_ ev_fork *w) 4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4538{
3553 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
3555 return; 4541 return;
3556 4542
… …
3567 4553
3568 EV_FREQUENT_CHECK; 4554 EV_FREQUENT_CHECK;
3569} 4555}
3570#endif 4556#endif
3571 4557
4558#if EV_CLEANUP_ENABLE
4559void
4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4561{
4562 if (expect_false (ev_is_active (w)))
4563 return;
4564
4565 EV_FREQUENT_CHECK;
4566
4567 ev_start (EV_A_ (W)w, ++cleanupcnt);
4568 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4569 cleanups [cleanupcnt - 1] = w;
4570
4571 /* cleanup watchers should never keep a refcount on the loop */
4572 ev_unref (EV_A);
4573 EV_FREQUENT_CHECK;
4574}
4575
4576void
4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4578{
4579 clear_pending (EV_A_ (W)w);
4580 if (expect_false (!ev_is_active (w)))
4581 return;
4582
4583 EV_FREQUENT_CHECK;
4584 ev_ref (EV_A);
4585
4586 {
4587 int active = ev_active (w);
4588
4589 cleanups [active - 1] = cleanups [--cleanupcnt];
4590 ev_active (cleanups [active - 1]) = active;
4591 }
4592
4593 ev_stop (EV_A_ (W)w);
4594
4595 EV_FREQUENT_CHECK;
4596}
4597#endif
4598
3572#if EV_ASYNC_ENABLE 4599#if EV_ASYNC_ENABLE
3573void 4600void
3574ev_async_start (EV_P_ ev_async *w) 4601ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4602{
3576 if (expect_false (ev_is_active (w))) 4603 if (expect_false (ev_is_active (w)))
3577 return; 4604 return;
4605
4606 w->sent = 0;
3578 4607
3579 evpipe_init (EV_A); 4608 evpipe_init (EV_A);
3580 4609
3581 EV_FREQUENT_CHECK; 4610 EV_FREQUENT_CHECK;
3582 4611
… …
3586 4615
3587 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3588} 4617}
3589 4618
3590void 4619void
3591ev_async_stop (EV_P_ ev_async *w) 4620ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4621{
3593 clear_pending (EV_A_ (W)w); 4622 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4623 if (expect_false (!ev_is_active (w)))
3595 return; 4624 return;
3596 4625
… …
3607 4636
3608 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
3609} 4638}
3610 4639
3611void 4640void
3612ev_async_send (EV_P_ ev_async *w) 4641ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4642{
3614 w->sent = 1; 4643 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4644 evpipe_write (EV_A_ &async_pending);
3616} 4645}
3617#endif 4646#endif
… …
3654 4683
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4684 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4685}
3657 4686
3658void 4687void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4688ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4689{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4690 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4691
3663 if (expect_false (!once)) 4692 if (expect_false (!once))
3664 { 4693 {
… …
3685} 4714}
3686 4715
3687/*****************************************************************************/ 4716/*****************************************************************************/
3688 4717
3689#if EV_WALK_ENABLE 4718#if EV_WALK_ENABLE
3690void 4719void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4720ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4721{
3693 int i, j; 4722 int i, j;
3694 ev_watcher_list *wl, *wn; 4723 ev_watcher_list *wl, *wn;
3695 4724
3696 if (types & (EV_IO | EV_EMBED)) 4725 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4768 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4769#endif
3741 4770
3742#if EV_IDLE_ENABLE 4771#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4772 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4773 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4774 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4775 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4776#endif
3748 4777
3749#if EV_FORK_ENABLE 4778#if EV_FORK_ENABLE
… …
3802 4831
3803#if EV_MULTIPLICITY 4832#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4833 #include "ev_wrap.h"
3805#endif 4834#endif
3806 4835
3807#ifdef __cplusplus
3808}
3809#endif
3810

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines