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Comparing libev/ev.c (file contents):
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC vs.
Revision 1.456 by root, Thu Jul 4 22:32:23 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# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
340 357
341#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 360#endif
344 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* 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. */ 379/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 381# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
353# else 386# else
… …
356# endif 389# endif
357#endif 390#endif
358 391
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 393
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 394#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
370#endif 397#endif
371 398
… …
378# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
380#endif 407#endif
381 408
382#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 412# include <sys/select.h>
385# endif 413# endif
386#endif 414#endif
387 415
388#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 417# include <sys/statfs.h>
391# include <sys/inotify.h> 418# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
396# endif 423# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 424#endif
402 425
403#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 428# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
412# else 435# else
413# define EFD_CLOEXEC 02000000 436# define EFD_CLOEXEC 02000000
414# endif 437# endif
415# endif 438# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 440#endif
424 441
425#if EV_USE_SIGNALFD 442#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 444# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 450# define SFD_CLOEXEC O_CLOEXEC
434# else 451# else
435# define SFD_CLOEXEC 02000000 452# define SFD_CLOEXEC 02000000
436# endif 453# endif
437# endif 454# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 456
443struct signalfd_siginfo 457struct signalfd_siginfo
444{ 458{
445 uint32_t ssi_signo; 459 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 460 char pad[128 - sizeof (uint32_t)];
447}; 461};
448# ifdef __cplusplus
449}
450# endif
451#endif 462#endif
452 463
453/**/ 464/**/
454 465
455#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
… …
457#else 468#else
458# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
459#endif 470#endif
460 471
461/* 472/*
462 * This is used to avoid floating point rounding problems. 473 * 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. 474 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 475 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 478
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#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) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 481
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 482#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) 483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 529 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
480#else 545#else
481# define expect(expr,value) (expr) 546 #include <inttypes.h>
482# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
484# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
485# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
486#endif 560 #endif
561#endif
487 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #endif
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_GCC_VERSION(4,7)
648 /* see comment below (stdatomic.h) about the C11 memory model. */
649 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
650
651 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
652 * without risking compile time errors with other compilers. We *could*
653 * define our own ecb_clang_has_feature, but I just can't be bothered to work
654 * around this shit time and again.
655 * #elif defined __clang && __has_feature (cxx_atomic)
656 * // see comment below (stdatomic.h) about the C11 memory model.
657 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
658 */
659
660 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
661 #define ECB_MEMORY_FENCE __sync_synchronize ()
662 #elif _MSC_VER >= 1400 /* VC++ 2005 */
663 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
664 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
665 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
666 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
667 #elif defined _WIN32
668 #include <WinNT.h>
669 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
670 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #include <mbarrier.h>
672 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
673 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
674 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
675 #elif __xlC__
676 #define ECB_MEMORY_FENCE __sync ()
677 #endif
678#endif
679
680#ifndef ECB_MEMORY_FENCE
681 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
682 /* we assume that these memory fences work on all variables/all memory accesses, */
683 /* not just C11 atomics and atomic accesses */
684 #include <stdatomic.h>
685 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
686 /* any fence other than seq_cst, which isn't very efficient for us. */
687 /* Why that is, we don't know - either the C11 memory model is quite useless */
688 /* for most usages, or gcc and clang have a bug */
689 /* I *currently* lean towards the latter, and inefficiently implement */
690 /* all three of ecb's fences as a seq_cst fence */
691 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
692 #endif
693#endif
694
695#ifndef ECB_MEMORY_FENCE
696 #if !ECB_AVOID_PTHREADS
697 /*
698 * if you get undefined symbol references to pthread_mutex_lock,
699 * or failure to find pthread.h, then you should implement
700 * the ECB_MEMORY_FENCE operations for your cpu/compiler
701 * OR provide pthread.h and link against the posix thread library
702 * of your system.
703 */
704 #include <pthread.h>
705 #define ECB_NEEDS_PTHREADS 1
706 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
707
708 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
709 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
710 #endif
711#endif
712
713#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
714 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
715#endif
716
717#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
718 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
719#endif
720
721/*****************************************************************************/
722
723#if __cplusplus
724 #define ecb_inline static inline
725#elif ECB_GCC_VERSION(2,5)
726 #define ecb_inline static __inline__
727#elif ECB_C99
728 #define ecb_inline static inline
729#else
730 #define ecb_inline static
731#endif
732
733#if ECB_GCC_VERSION(3,3)
734 #define ecb_restrict __restrict__
735#elif ECB_C99
736 #define ecb_restrict restrict
737#else
738 #define ecb_restrict
739#endif
740
741typedef int ecb_bool;
742
743#define ECB_CONCAT_(a, b) a ## b
744#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
745#define ECB_STRINGIFY_(a) # a
746#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
747
748#define ecb_function_ ecb_inline
749
750#if ECB_GCC_VERSION(3,1)
751 #define ecb_attribute(attrlist) __attribute__(attrlist)
752 #define ecb_is_constant(expr) __builtin_constant_p (expr)
753 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
754 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
755#else
756 #define ecb_attribute(attrlist)
757 #define ecb_is_constant(expr) 0
758 #define ecb_expect(expr,value) (expr)
759 #define ecb_prefetch(addr,rw,locality)
760#endif
761
762/* no emulation for ecb_decltype */
763#if ECB_GCC_VERSION(4,5)
764 #define ecb_decltype(x) __decltype(x)
765#elif ECB_GCC_VERSION(3,0)
766 #define ecb_decltype(x) __typeof(x)
767#endif
768
769#define ecb_noinline ecb_attribute ((__noinline__))
770#define ecb_unused ecb_attribute ((__unused__))
771#define ecb_const ecb_attribute ((__const__))
772#define ecb_pure ecb_attribute ((__pure__))
773
774#if ECB_C11
775 #define ecb_noreturn _Noreturn
776#else
777 #define ecb_noreturn ecb_attribute ((__noreturn__))
778#endif
779
780#if ECB_GCC_VERSION(4,3)
781 #define ecb_artificial ecb_attribute ((__artificial__))
782 #define ecb_hot ecb_attribute ((__hot__))
783 #define ecb_cold ecb_attribute ((__cold__))
784#else
785 #define ecb_artificial
786 #define ecb_hot
787 #define ecb_cold
788#endif
789
790/* put around conditional expressions if you are very sure that the */
791/* expression is mostly true or mostly false. note that these return */
792/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 793#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 794#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
795/* for compatibility to the rest of the world */
796#define ecb_likely(expr) ecb_expect_true (expr)
797#define ecb_unlikely(expr) ecb_expect_false (expr)
798
799/* count trailing zero bits and count # of one bits */
800#if ECB_GCC_VERSION(3,4)
801 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
802 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
803 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
804 #define ecb_ctz32(x) __builtin_ctz (x)
805 #define ecb_ctz64(x) __builtin_ctzll (x)
806 #define ecb_popcount32(x) __builtin_popcount (x)
807 /* no popcountll */
808#else
809 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
810 ecb_function_ int
811 ecb_ctz32 (uint32_t x)
812 {
813 int r = 0;
814
815 x &= ~x + 1; /* this isolates the lowest bit */
816
817#if ECB_branchless_on_i386
818 r += !!(x & 0xaaaaaaaa) << 0;
819 r += !!(x & 0xcccccccc) << 1;
820 r += !!(x & 0xf0f0f0f0) << 2;
821 r += !!(x & 0xff00ff00) << 3;
822 r += !!(x & 0xffff0000) << 4;
823#else
824 if (x & 0xaaaaaaaa) r += 1;
825 if (x & 0xcccccccc) r += 2;
826 if (x & 0xf0f0f0f0) r += 4;
827 if (x & 0xff00ff00) r += 8;
828 if (x & 0xffff0000) r += 16;
829#endif
830
831 return r;
832 }
833
834 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
835 ecb_function_ int
836 ecb_ctz64 (uint64_t x)
837 {
838 int shift = x & 0xffffffffU ? 0 : 32;
839 return ecb_ctz32 (x >> shift) + shift;
840 }
841
842 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
843 ecb_function_ int
844 ecb_popcount32 (uint32_t x)
845 {
846 x -= (x >> 1) & 0x55555555;
847 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
848 x = ((x >> 4) + x) & 0x0f0f0f0f;
849 x *= 0x01010101;
850
851 return x >> 24;
852 }
853
854 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
855 ecb_function_ int ecb_ld32 (uint32_t x)
856 {
857 int r = 0;
858
859 if (x >> 16) { x >>= 16; r += 16; }
860 if (x >> 8) { x >>= 8; r += 8; }
861 if (x >> 4) { x >>= 4; r += 4; }
862 if (x >> 2) { x >>= 2; r += 2; }
863 if (x >> 1) { r += 1; }
864
865 return r;
866 }
867
868 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
869 ecb_function_ int ecb_ld64 (uint64_t x)
870 {
871 int r = 0;
872
873 if (x >> 32) { x >>= 32; r += 32; }
874
875 return r + ecb_ld32 (x);
876 }
877#endif
878
879ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
881ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
882ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
883
884ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
885ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
886{
887 return ( (x * 0x0802U & 0x22110U)
888 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
889}
890
891ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
892ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
893{
894 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
895 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
896 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
897 x = ( x >> 8 ) | ( x << 8);
898
899 return x;
900}
901
902ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
903ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
904{
905 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
906 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
907 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
908 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
909 x = ( x >> 16 ) | ( x << 16);
910
911 return x;
912}
913
914/* popcount64 is only available on 64 bit cpus as gcc builtin */
915/* so for this version we are lazy */
916ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
917ecb_function_ int
918ecb_popcount64 (uint64_t x)
919{
920 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
921}
922
923ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
924ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
925ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
926ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
927ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
928ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
929ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
930ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
931
932ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
933ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
934ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
935ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
936ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
937ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
938ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
939ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
940
941#if ECB_GCC_VERSION(4,3)
942 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
943 #define ecb_bswap32(x) __builtin_bswap32 (x)
944 #define ecb_bswap64(x) __builtin_bswap64 (x)
945#else
946 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
947 ecb_function_ uint16_t
948 ecb_bswap16 (uint16_t x)
949 {
950 return ecb_rotl16 (x, 8);
951 }
952
953 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
954 ecb_function_ uint32_t
955 ecb_bswap32 (uint32_t x)
956 {
957 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
958 }
959
960 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
961 ecb_function_ uint64_t
962 ecb_bswap64 (uint64_t x)
963 {
964 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
965 }
966#endif
967
968#if ECB_GCC_VERSION(4,5)
969 #define ecb_unreachable() __builtin_unreachable ()
970#else
971 /* this seems to work fine, but gcc always emits a warning for it :/ */
972 ecb_inline void ecb_unreachable (void) ecb_noreturn;
973 ecb_inline void ecb_unreachable (void) { }
974#endif
975
976/* try to tell the compiler that some condition is definitely true */
977#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
978
979ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
980ecb_inline unsigned char
981ecb_byteorder_helper (void)
982{
983 /* the union code still generates code under pressure in gcc, */
984 /* but less than using pointers, and always seems to */
985 /* successfully return a constant. */
986 /* the reason why we have this horrible preprocessor mess */
987 /* is to avoid it in all cases, at least on common architectures */
988 /* or when using a recent enough gcc version (>= 4.6) */
989#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
992 return 0x44;
993#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
994 return 0x11;
995#else
996 union
997 {
998 uint32_t i;
999 uint8_t c;
1000 } u = { 0x11223344 };
1001 return u.c;
1002#endif
1003}
1004
1005ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1007ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1008ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1009
1010#if ECB_GCC_VERSION(3,0) || ECB_C99
1011 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1012#else
1013 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1014#endif
1015
1016#if __cplusplus
1017 template<typename T>
1018 static inline T ecb_div_rd (T val, T div)
1019 {
1020 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1021 }
1022 template<typename T>
1023 static inline T ecb_div_ru (T val, T div)
1024 {
1025 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1026 }
1027#else
1028 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1029 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1030#endif
1031
1032#if ecb_cplusplus_does_not_suck
1033 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1034 template<typename T, int N>
1035 static inline int ecb_array_length (const T (&arr)[N])
1036 {
1037 return N;
1038 }
1039#else
1040 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1041#endif
1042
1043/*******************************************************************************/
1044/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1045
1046/* basically, everything uses "ieee pure-endian" floating point numbers */
1047/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1048#if 0 \
1049 || __i386 || __i386__ \
1050 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1051 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1052 || defined __arm__ && defined __ARM_EABI__ \
1053 || defined __s390__ || defined __s390x__ \
1054 || defined __mips__ \
1055 || defined __alpha__ \
1056 || defined __hppa__ \
1057 || defined __ia64__ \
1058 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1059 #define ECB_STDFP 1
1060 #include <string.h> /* for memcpy */
1061#else
1062 #define ECB_STDFP 0
1063 #include <math.h> /* for frexp*, ldexp* */
1064#endif
1065
1066#ifndef ECB_NO_LIBM
1067
1068 /* convert a float to ieee single/binary32 */
1069 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1070 ecb_function_ uint32_t
1071 ecb_float_to_binary32 (float x)
1072 {
1073 uint32_t r;
1074
1075 #if ECB_STDFP
1076 memcpy (&r, &x, 4);
1077 #else
1078 /* slow emulation, works for anything but -0 */
1079 uint32_t m;
1080 int e;
1081
1082 if (x == 0e0f ) return 0x00000000U;
1083 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1084 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1085 if (x != x ) return 0x7fbfffffU;
1086
1087 m = frexpf (x, &e) * 0x1000000U;
1088
1089 r = m & 0x80000000U;
1090
1091 if (r)
1092 m = -m;
1093
1094 if (e <= -126)
1095 {
1096 m &= 0xffffffU;
1097 m >>= (-125 - e);
1098 e = -126;
1099 }
1100
1101 r |= (e + 126) << 23;
1102 r |= m & 0x7fffffU;
1103 #endif
1104
1105 return r;
1106 }
1107
1108 /* converts an ieee single/binary32 to a float */
1109 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1110 ecb_function_ float
1111 ecb_binary32_to_float (uint32_t x)
1112 {
1113 float r;
1114
1115 #if ECB_STDFP
1116 memcpy (&r, &x, 4);
1117 #else
1118 /* emulation, only works for normals and subnormals and +0 */
1119 int neg = x >> 31;
1120 int e = (x >> 23) & 0xffU;
1121
1122 x &= 0x7fffffU;
1123
1124 if (e)
1125 x |= 0x800000U;
1126 else
1127 e = 1;
1128
1129 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1130 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1131
1132 r = neg ? -r : r;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* convert a double to ieee double/binary64 */
1139 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1140 ecb_function_ uint64_t
1141 ecb_double_to_binary64 (double x)
1142 {
1143 uint64_t r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 8);
1147 #else
1148 /* slow emulation, works for anything but -0 */
1149 uint64_t m;
1150 int e;
1151
1152 if (x == 0e0 ) return 0x0000000000000000U;
1153 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1154 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1155 if (x != x ) return 0X7ff7ffffffffffffU;
1156
1157 m = frexp (x, &e) * 0x20000000000000U;
1158
1159 r = m & 0x8000000000000000;;
1160
1161 if (r)
1162 m = -m;
1163
1164 if (e <= -1022)
1165 {
1166 m &= 0x1fffffffffffffU;
1167 m >>= (-1021 - e);
1168 e = -1022;
1169 }
1170
1171 r |= ((uint64_t)(e + 1022)) << 52;
1172 r |= m & 0xfffffffffffffU;
1173 #endif
1174
1175 return r;
1176 }
1177
1178 /* converts an ieee double/binary64 to a double */
1179 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1180 ecb_function_ double
1181 ecb_binary64_to_double (uint64_t x)
1182 {
1183 double r;
1184
1185 #if ECB_STDFP
1186 memcpy (&r, &x, 8);
1187 #else
1188 /* emulation, only works for normals and subnormals and +0 */
1189 int neg = x >> 63;
1190 int e = (x >> 52) & 0x7ffU;
1191
1192 x &= 0xfffffffffffffU;
1193
1194 if (e)
1195 x |= 0x10000000000000U;
1196 else
1197 e = 1;
1198
1199 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1200 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1201
1202 r = neg ? -r : r;
1203 #endif
1204
1205 return r;
1206 }
1207
1208#endif
1209
1210#endif
1211
1212/* ECB.H END */
1213
1214#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1215/* if your architecture doesn't need memory fences, e.g. because it is
1216 * single-cpu/core, or if you use libev in a project that doesn't use libev
1217 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1218 * libev, in which cases the memory fences become nops.
1219 * alternatively, you can remove this #error and link against libpthread,
1220 * which will then provide the memory fences.
1221 */
1222# error "memory fences not defined for your architecture, please report"
1223#endif
1224
1225#ifndef ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE do { } while (0)
1227# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1228# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1229#endif
1230
1231#define expect_false(cond) ecb_expect_false (cond)
1232#define expect_true(cond) ecb_expect_true (cond)
1233#define noinline ecb_noinline
1234
490#define inline_size static inline 1235#define inline_size ecb_inline
491 1236
492#if EV_FEATURE_CODE 1237#if EV_FEATURE_CODE
493# define inline_speed static inline 1238# define inline_speed ecb_inline
494#else 1239#else
495# define inline_speed static noinline 1240# define inline_speed static noinline
496#endif 1241#endif
497 1242
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1243#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1282# include "ev_win32.c"
538#endif 1283#endif
539 1284
540/*****************************************************************************/ 1285/*****************************************************************************/
541 1286
1287/* define a suitable floor function (only used by periodics atm) */
1288
1289#if EV_USE_FLOOR
1290# include <math.h>
1291# define ev_floor(v) floor (v)
1292#else
1293
1294#include <float.h>
1295
1296/* a floor() replacement function, should be independent of ev_tstamp type */
1297static ev_tstamp noinline
1298ev_floor (ev_tstamp v)
1299{
1300 /* the choice of shift factor is not terribly important */
1301#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1303#else
1304 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1305#endif
1306
1307 /* argument too large for an unsigned long? */
1308 if (expect_false (v >= shift))
1309 {
1310 ev_tstamp f;
1311
1312 if (v == v - 1.)
1313 return v; /* very large number */
1314
1315 f = shift * ev_floor (v * (1. / shift));
1316 return f + ev_floor (v - f);
1317 }
1318
1319 /* special treatment for negative args? */
1320 if (expect_false (v < 0.))
1321 {
1322 ev_tstamp f = -ev_floor (-v);
1323
1324 return f - (f == v ? 0 : 1);
1325 }
1326
1327 /* fits into an unsigned long */
1328 return (unsigned long)v;
1329}
1330
1331#endif
1332
1333/*****************************************************************************/
1334
1335#ifdef __linux
1336# include <sys/utsname.h>
1337#endif
1338
1339static unsigned int noinline ecb_cold
1340ev_linux_version (void)
1341{
1342#ifdef __linux
1343 unsigned int v = 0;
1344 struct utsname buf;
1345 int i;
1346 char *p = buf.release;
1347
1348 if (uname (&buf))
1349 return 0;
1350
1351 for (i = 3+1; --i; )
1352 {
1353 unsigned int c = 0;
1354
1355 for (;;)
1356 {
1357 if (*p >= '0' && *p <= '9')
1358 c = c * 10 + *p++ - '0';
1359 else
1360 {
1361 p += *p == '.';
1362 break;
1363 }
1364 }
1365
1366 v = (v << 8) | c;
1367 }
1368
1369 return v;
1370#else
1371 return 0;
1372#endif
1373}
1374
1375/*****************************************************************************/
1376
542#if EV_AVOID_STDIO 1377#if EV_AVOID_STDIO
543static void noinline 1378static void noinline ecb_cold
544ev_printerr (const char *msg) 1379ev_printerr (const char *msg)
545{ 1380{
546 write (STDERR_FILENO, msg, strlen (msg)); 1381 write (STDERR_FILENO, msg, strlen (msg));
547} 1382}
548#endif 1383#endif
549 1384
550static void (*syserr_cb)(const char *msg); 1385static void (*syserr_cb)(const char *msg) EV_THROW;
551 1386
552void 1387void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1388ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1389{
555 syserr_cb = cb; 1390 syserr_cb = cb;
556} 1391}
557 1392
558static void noinline 1393static void noinline ecb_cold
559ev_syserr (const char *msg) 1394ev_syserr (const char *msg)
560{ 1395{
561 if (!msg) 1396 if (!msg)
562 msg = "(libev) system error"; 1397 msg = "(libev) system error";
563 1398
564 if (syserr_cb) 1399 if (syserr_cb)
565 syserr_cb (msg); 1400 syserr_cb (msg);
566 else 1401 else
567 { 1402 {
568#if EV_AVOID_STDIO 1403#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1404 ev_printerr (msg);
572 ev_printerr (": "); 1405 ev_printerr (": ");
573 ev_printerr (err); 1406 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1407 ev_printerr ("\n");
575#else 1408#else
576 perror (msg); 1409 perror (msg);
577#endif 1410#endif
578 abort (); 1411 abort ();
579 } 1412 }
580} 1413}
581 1414
582static void * 1415static void *
583ev_realloc_emul (void *ptr, long size) 1416ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1417{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1418 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1419 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1420 * the single unix specification, so work around them here.
1421 * recently, also (at least) fedora and debian started breaking it,
1422 * despite documenting it otherwise.
591 */ 1423 */
592 1424
593 if (size) 1425 if (size)
594 return realloc (ptr, size); 1426 return realloc (ptr, size);
595 1427
596 free (ptr); 1428 free (ptr);
597 return 0; 1429 return 0;
598#endif
599} 1430}
600 1431
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1432static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1433
603void 1434void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1435ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1436{
606 alloc = cb; 1437 alloc = cb;
607} 1438}
608 1439
609inline_speed void * 1440inline_speed void *
… …
612 ptr = alloc (ptr, size); 1443 ptr = alloc (ptr, size);
613 1444
614 if (!ptr && size) 1445 if (!ptr && size)
615 { 1446 {
616#if EV_AVOID_STDIO 1447#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1448 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1449#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1450 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1451#endif
621 abort (); 1452 abort ();
622 } 1453 }
623 1454
624 return ptr; 1455 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1472 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1473 unsigned char unused;
643#if EV_USE_EPOLL 1474#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1475 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1476#endif
646#if EV_SELECT_IS_WINSOCKET 1477#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1478 SOCKET handle;
1479#endif
1480#if EV_USE_IOCP
1481 OVERLAPPED or, ow;
648#endif 1482#endif
649} ANFD; 1483} ANFD;
650 1484
651/* stores the pending event set for a given watcher */ 1485/* stores the pending event set for a given watcher */
652typedef struct 1486typedef struct
… …
694 #undef VAR 1528 #undef VAR
695 }; 1529 };
696 #include "ev_wrap.h" 1530 #include "ev_wrap.h"
697 1531
698 static struct ev_loop default_loop_struct; 1532 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1533 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1534
701#else 1535#else
702 1536
703 ev_tstamp ev_rt_now; 1537 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; 1538 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1539 #include "ev_vars.h"
706 #undef VAR 1540 #undef VAR
707 1541
708 static int ev_default_loop_ptr; 1542 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1551# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1552# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1553# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1554#endif
721 1555
722#define EVUNLOOP_RECURSE 0x80 1556#define EVBREAK_RECURSE 0x80
723 1557
724/*****************************************************************************/ 1558/*****************************************************************************/
725 1559
726#ifndef EV_HAVE_EV_TIME 1560#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1561ev_tstamp
728ev_time (void) 1562ev_time (void) EV_THROW
729{ 1563{
730#if EV_USE_REALTIME 1564#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1565 if (expect_true (have_realtime))
732 { 1566 {
733 struct timespec ts; 1567 struct timespec ts;
… …
757 return ev_time (); 1591 return ev_time ();
758} 1592}
759 1593
760#if EV_MULTIPLICITY 1594#if EV_MULTIPLICITY
761ev_tstamp 1595ev_tstamp
762ev_now (EV_P) 1596ev_now (EV_P) EV_THROW
763{ 1597{
764 return ev_rt_now; 1598 return ev_rt_now;
765} 1599}
766#endif 1600#endif
767 1601
768void 1602void
769ev_sleep (ev_tstamp delay) 1603ev_sleep (ev_tstamp delay) EV_THROW
770{ 1604{
771 if (delay > 0.) 1605 if (delay > 0.)
772 { 1606 {
773#if EV_USE_NANOSLEEP 1607#if EV_USE_NANOSLEEP
774 struct timespec ts; 1608 struct timespec ts;
775 1609
776 EV_TS_SET (ts, delay); 1610 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1611 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1612#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1613 Sleep ((unsigned long)(delay * 1e3));
780#else 1614#else
781 struct timeval tv; 1615 struct timeval tv;
782 1616
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1617 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1636
803 do 1637 do
804 ncur <<= 1; 1638 ncur <<= 1;
805 while (cnt > ncur); 1639 while (cnt > ncur);
806 1640
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1641 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1642 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1643 {
810 ncur *= elem; 1644 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1645 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1646 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1648 }
815 1649
816 return ncur; 1650 return ncur;
817} 1651}
818 1652
819static noinline void * 1653static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1654array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1655{
822 *cur = array_nextsize (elem, *cur, cnt); 1656 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1657 return ev_realloc (base, elem * *cur);
824} 1658}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1661 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1662
829#define array_needsize(type,base,cur,cnt,init) \ 1663#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1664 if (expect_false ((cnt) > (cur))) \
831 { \ 1665 { \
832 int ocur_ = (cur); \ 1666 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1667 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1668 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1669 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1670 }
837 1671
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1689pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1690{
857} 1691}
858 1692
859void noinline 1693void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1694ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1695{
862 W w_ = (W)w; 1696 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1697 int pri = ABSPRI (w_);
864 1698
865 if (expect_false (w_->pending)) 1699 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1703 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1704 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1705 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1706 pendings [pri][w_->pending - 1].events = revents;
873 } 1707 }
1708
1709 pendingpri = NUMPRI - 1;
874} 1710}
875 1711
876inline_speed void 1712inline_speed void
877feed_reverse (EV_P_ W w) 1713feed_reverse (EV_P_ W w)
878{ 1714{
… …
924 if (expect_true (!anfd->reify)) 1760 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1761 fd_event_nocheck (EV_A_ fd, revents);
926} 1762}
927 1763
928void 1764void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1765ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1766{
931 if (fd >= 0 && fd < anfdmax) 1767 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1768 fd_event_nocheck (EV_A_ fd, revents);
933} 1769}
934 1770
… …
937inline_size void 1773inline_size void
938fd_reify (EV_P) 1774fd_reify (EV_P)
939{ 1775{
940 int i; 1776 int i;
941 1777
1778#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1779 for (i = 0; i < fdchangecnt; ++i)
1780 {
1781 int fd = fdchanges [i];
1782 ANFD *anfd = anfds + fd;
1783
1784 if (anfd->reify & EV__IOFDSET && anfd->head)
1785 {
1786 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1787
1788 if (handle != anfd->handle)
1789 {
1790 unsigned long arg;
1791
1792 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1793
1794 /* handle changed, but fd didn't - we need to do it in two steps */
1795 backend_modify (EV_A_ fd, anfd->events, 0);
1796 anfd->events = 0;
1797 anfd->handle = handle;
1798 }
1799 }
1800 }
1801#endif
1802
942 for (i = 0; i < fdchangecnt; ++i) 1803 for (i = 0; i < fdchangecnt; ++i)
943 { 1804 {
944 int fd = fdchanges [i]; 1805 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1806 ANFD *anfd = anfds + fd;
946 ev_io *w; 1807 ev_io *w;
947 1808
948 unsigned char events = 0; 1809 unsigned char o_events = anfd->events;
1810 unsigned char o_reify = anfd->reify;
949 1811
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1812 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1813
953#if EV_SELECT_IS_WINSOCKET 1814 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1815 {
956 unsigned long arg; 1816 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1817
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1818 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1819 anfd->events |= (unsigned char)w->events;
1820
1821 if (o_events != anfd->events)
1822 o_reify = EV__IOFDSET; /* actually |= */
959 } 1823 }
960#endif
961 1824
962 { 1825 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); 1826 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1827 }
973 1828
974 fdchangecnt = 0; 1829 fdchangecnt = 0;
975} 1830}
976 1831
… …
988 fdchanges [fdchangecnt - 1] = fd; 1843 fdchanges [fdchangecnt - 1] = fd;
989 } 1844 }
990} 1845}
991 1846
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1848inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1849fd_kill (EV_P_ int fd)
995{ 1850{
996 ev_io *w; 1851 ev_io *w;
997 1852
998 while ((w = (ev_io *)anfds [fd].head)) 1853 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1857 }
1003} 1858}
1004 1859
1005/* check whether the given fd is actually valid, for error recovery */ 1860/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1861inline_size int ecb_cold
1007fd_valid (int fd) 1862fd_valid (int fd)
1008{ 1863{
1009#ifdef _WIN32 1864#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1865 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1866#else
1012 return fcntl (fd, F_GETFD) != -1; 1867 return fcntl (fd, F_GETFD) != -1;
1013#endif 1868#endif
1014} 1869}
1015 1870
1016/* called on EBADF to verify fds */ 1871/* called on EBADF to verify fds */
1017static void noinline 1872static void noinline ecb_cold
1018fd_ebadf (EV_P) 1873fd_ebadf (EV_P)
1019{ 1874{
1020 int fd; 1875 int fd;
1021 1876
1022 for (fd = 0; fd < anfdmax; ++fd) 1877 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1879 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1880 fd_kill (EV_A_ fd);
1026} 1881}
1027 1882
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1883/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1884static void noinline ecb_cold
1030fd_enomem (EV_P) 1885fd_enomem (EV_P)
1031{ 1886{
1032 int fd; 1887 int fd;
1033 1888
1034 for (fd = anfdmax; fd--; ) 1889 for (fd = anfdmax; fd--; )
… …
1229 2084
1230/*****************************************************************************/ 2085/*****************************************************************************/
1231 2086
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2087#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2088
1234static void noinline 2089static void noinline ecb_cold
1235evpipe_init (EV_P) 2090evpipe_init (EV_P)
1236{ 2091{
1237 if (!ev_is_active (&pipe_w)) 2092 if (!ev_is_active (&pipe_w))
1238 { 2093 {
2094 int fds [2];
2095
1239# if EV_USE_EVENTFD 2096# if EV_USE_EVENTFD
2097 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2098 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2099 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2100 fds [1] = eventfd (0, 0);
1243 2101
1244 if (evfd >= 0) 2102 if (fds [1] < 0)
2103# endif
1245 { 2104 {
2105 while (pipe (fds))
2106 ev_syserr ("(libev) error creating signal/async pipe");
2107
2108 fd_intern (fds [0]);
2109 }
2110
1246 evpipe [0] = -1; 2111 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2112
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2113 if (evpipe [1] < 0)
2114 evpipe [1] = fds [1]; /* first call, set write fd */
2115 else
2116 {
2117 /* on subsequent calls, do not change evpipe [1] */
2118 /* so that evpipe_write can always rely on its value. */
2119 /* this branch does not do anything sensible on windows, */
2120 /* so must not be executed on windows */
2121
2122 dup2 (fds [1], evpipe [1]);
2123 close (fds [1]);
2124 }
2125
2126 fd_intern (evpipe [1]);
2127
2128 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2129 ev_io_start (EV_A_ &pipe_w);
2130 ev_unref (EV_A); /* watcher should not keep loop alive */
2131 }
2132}
2133
2134inline_speed void
2135evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2136{
2137 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2138
2139 if (expect_true (*flag))
2140 return;
2141
2142 *flag = 1;
2143 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2144
2145 pipe_write_skipped = 1;
2146
2147 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2148
2149 if (pipe_write_wanted)
2150 {
2151 int old_errno;
2152
2153 pipe_write_skipped = 0;
2154 ECB_MEMORY_FENCE_RELEASE;
2155
2156 old_errno = errno; /* save errno because write will clobber it */
2157
2158#if EV_USE_EVENTFD
2159 if (evpipe [0] < 0)
2160 {
2161 uint64_t counter = 1;
2162 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2163 }
1250 else 2164 else
1251# endif 2165#endif
1252 { 2166 {
1253 while (pipe (evpipe)) 2167#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2168 WSABUF buf;
1255 2169 DWORD sent;
1256 fd_intern (evpipe [0]); 2170 buf.buf = &buf;
1257 fd_intern (evpipe [1]); 2171 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2172 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2173#else
2174 write (evpipe [1], &(evpipe [1]), 1);
2175#endif
1259 } 2176 }
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 2177
1291 errno = old_errno; 2178 errno = old_errno;
1292 } 2179 }
1293} 2180}
1294 2181
… …
1297static void 2184static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2185pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2186{
1300 int i; 2187 int i;
1301 2188
2189 if (revents & EV_READ)
2190 {
1302#if EV_USE_EVENTFD 2191#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2192 if (evpipe [0] < 0)
1304 { 2193 {
1305 uint64_t counter; 2194 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2195 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2196 }
1308 else 2197 else
1309#endif 2198#endif
1310 { 2199 {
1311 char dummy; 2200 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2201#ifdef _WIN32
2202 WSABUF buf;
2203 DWORD recvd;
2204 DWORD flags = 0;
2205 buf.buf = dummy;
2206 buf.len = sizeof (dummy);
2207 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2208#else
1313 read (evpipe [0], &dummy, 1); 2209 read (evpipe [0], &dummy, sizeof (dummy));
2210#endif
2211 }
1314 } 2212 }
1315 2213
2214 pipe_write_skipped = 0;
2215
2216 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2217
2218#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2219 if (sig_pending)
1317 { 2220 {
1318 sig_pending = 0; 2221 sig_pending = 0;
2222
2223 ECB_MEMORY_FENCE;
1319 2224
1320 for (i = EV_NSIG - 1; i--; ) 2225 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2226 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2227 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2228 }
2229#endif
1324 2230
1325#if EV_ASYNC_ENABLE 2231#if EV_ASYNC_ENABLE
1326 if (async_pending) 2232 if (async_pending)
1327 { 2233 {
1328 async_pending = 0; 2234 async_pending = 0;
2235
2236 ECB_MEMORY_FENCE;
1329 2237
1330 for (i = asynccnt; i--; ) 2238 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2239 if (asyncs [i]->sent)
1332 { 2240 {
1333 asyncs [i]->sent = 0; 2241 asyncs [i]->sent = 0;
2242 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2243 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2244 }
1336 } 2245 }
1337#endif 2246#endif
1338} 2247}
1339 2248
1340/*****************************************************************************/ 2249/*****************************************************************************/
1341 2250
2251void
2252ev_feed_signal (int signum) EV_THROW
2253{
2254#if EV_MULTIPLICITY
2255 EV_P;
2256 ECB_MEMORY_FENCE_ACQUIRE;
2257 EV_A = signals [signum - 1].loop;
2258
2259 if (!EV_A)
2260 return;
2261#endif
2262
2263 signals [signum - 1].pending = 1;
2264 evpipe_write (EV_A_ &sig_pending);
2265}
2266
1342static void 2267static void
1343ev_sighandler (int signum) 2268ev_sighandler (int signum)
1344{ 2269{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2270#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2271 signal (signum, ev_sighandler);
1351#endif 2272#endif
1352 2273
1353 signals [signum - 1].pending = 1; 2274 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2275}
1356 2276
1357void noinline 2277void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2278ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2279{
1360 WL w; 2280 WL w;
1361 2281
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2282 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2283 return;
1364 2284
1365 --signum; 2285 --signum;
1366 2286
1367#if EV_MULTIPLICITY 2287#if EV_MULTIPLICITY
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2291 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2292 return;
1373#endif 2293#endif
1374 2294
1375 signals [signum].pending = 0; 2295 signals [signum].pending = 0;
2296 ECB_MEMORY_FENCE_RELEASE;
1376 2297
1377 for (w = signals [signum].head; w; w = w->next) 2298 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2299 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2300}
1380 2301
… …
1459 2380
1460#endif 2381#endif
1461 2382
1462/*****************************************************************************/ 2383/*****************************************************************************/
1463 2384
2385#if EV_USE_IOCP
2386# include "ev_iocp.c"
2387#endif
1464#if EV_USE_PORT 2388#if EV_USE_PORT
1465# include "ev_port.c" 2389# include "ev_port.c"
1466#endif 2390#endif
1467#if EV_USE_KQUEUE 2391#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2392# include "ev_kqueue.c"
… …
1475#endif 2399#endif
1476#if EV_USE_SELECT 2400#if EV_USE_SELECT
1477# include "ev_select.c" 2401# include "ev_select.c"
1478#endif 2402#endif
1479 2403
1480int 2404int ecb_cold
1481ev_version_major (void) 2405ev_version_major (void) EV_THROW
1482{ 2406{
1483 return EV_VERSION_MAJOR; 2407 return EV_VERSION_MAJOR;
1484} 2408}
1485 2409
1486int 2410int ecb_cold
1487ev_version_minor (void) 2411ev_version_minor (void) EV_THROW
1488{ 2412{
1489 return EV_VERSION_MINOR; 2413 return EV_VERSION_MINOR;
1490} 2414}
1491 2415
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2416/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2417int inline_size ecb_cold
1494enable_secure (void) 2418enable_secure (void)
1495{ 2419{
1496#ifdef _WIN32 2420#ifdef _WIN32
1497 return 0; 2421 return 0;
1498#else 2422#else
1499 return getuid () != geteuid () 2423 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2424 || getgid () != getegid ();
1501#endif 2425#endif
1502} 2426}
1503 2427
1504unsigned int 2428unsigned int ecb_cold
1505ev_supported_backends (void) 2429ev_supported_backends (void) EV_THROW
1506{ 2430{
1507 unsigned int flags = 0; 2431 unsigned int flags = 0;
1508 2432
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2434 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2438
1515 return flags; 2439 return flags;
1516} 2440}
1517 2441
1518unsigned int 2442unsigned int ecb_cold
1519ev_recommended_backends (void) 2443ev_recommended_backends (void) EV_THROW
1520{ 2444{
1521 unsigned int flags = ev_supported_backends (); 2445 unsigned int flags = ev_supported_backends ();
1522 2446
1523#ifndef __NetBSD__ 2447#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2448 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2459#endif
1536 2460
1537 return flags; 2461 return flags;
1538} 2462}
1539 2463
2464unsigned int ecb_cold
2465ev_embeddable_backends (void) EV_THROW
2466{
2467 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2468
2469 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2470 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2471 flags &= ~EVBACKEND_EPOLL;
2472
2473 return flags;
2474}
2475
1540unsigned int 2476unsigned 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) 2477ev_backend (EV_P) EV_THROW
1554{ 2478{
1555 return backend; 2479 return backend;
1556} 2480}
1557 2481
1558#if EV_FEATURE_API 2482#if EV_FEATURE_API
1559unsigned int 2483unsigned int
1560ev_iteration (EV_P) 2484ev_iteration (EV_P) EV_THROW
1561{ 2485{
1562 return loop_count; 2486 return loop_count;
1563} 2487}
1564 2488
1565unsigned int 2489unsigned int
1566ev_depth (EV_P) 2490ev_depth (EV_P) EV_THROW
1567{ 2491{
1568 return loop_depth; 2492 return loop_depth;
1569} 2493}
1570 2494
1571void 2495void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2496ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2497{
1574 io_blocktime = interval; 2498 io_blocktime = interval;
1575} 2499}
1576 2500
1577void 2501void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2502ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2503{
1580 timeout_blocktime = interval; 2504 timeout_blocktime = interval;
1581} 2505}
1582 2506
1583void 2507void
1584ev_set_userdata (EV_P_ void *data) 2508ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2509{
1586 userdata = data; 2510 userdata = data;
1587} 2511}
1588 2512
1589void * 2513void *
1590ev_userdata (EV_P) 2514ev_userdata (EV_P) EV_THROW
1591{ 2515{
1592 return userdata; 2516 return userdata;
1593} 2517}
1594 2518
2519void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2520ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2521{
1597 invoke_cb = invoke_pending_cb; 2522 invoke_cb = invoke_pending_cb;
1598} 2523}
1599 2524
2525void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2526ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2527{
1602 release_cb = release; 2528 release_cb = release;
1603 acquire_cb = acquire; 2529 acquire_cb = acquire;
1604} 2530}
1605#endif 2531#endif
1606 2532
1607/* initialise a loop structure, must be zero-initialised */ 2533/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2534static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2535loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2536{
1611 if (!backend) 2537 if (!backend)
1612 { 2538 {
2539 origflags = flags;
2540
1613#if EV_USE_REALTIME 2541#if EV_USE_REALTIME
1614 if (!have_realtime) 2542 if (!have_realtime)
1615 { 2543 {
1616 struct timespec ts; 2544 struct timespec ts;
1617 2545
… …
1639 if (!(flags & EVFLAG_NOENV) 2567 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2568 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2569 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2570 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2571
1644 ev_rt_now = ev_time (); 2572 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2573 mn_now = get_clock ();
1646 now_floor = mn_now; 2574 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2575 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2576#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2577 invoke_cb = ev_invoke_pending;
1650#endif 2578#endif
1651 2579
1652 io_blocktime = 0.; 2580 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2581 timeout_blocktime = 0.;
1654 backend = 0; 2582 backend = 0;
1655 backend_fd = -1; 2583 backend_fd = -1;
1656 sig_pending = 0; 2584 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2585#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2586 async_pending = 0;
1659#endif 2587#endif
2588 pipe_write_skipped = 0;
2589 pipe_write_wanted = 0;
2590 evpipe [0] = -1;
2591 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 2592#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2593 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2594#endif
1663#if EV_USE_SIGNALFD 2595#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2596 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2597#endif
1666 2598
1667 if (!(flags & 0x0000ffffU)) 2599 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2600 flags |= ev_recommended_backends ();
1669 2601
2602#if EV_USE_IOCP
2603 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2604#endif
1670#if EV_USE_PORT 2605#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2606 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2607#endif
1673#if EV_USE_KQUEUE 2608#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2609 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2626#endif
1692 } 2627 }
1693} 2628}
1694 2629
1695/* free up a loop structure */ 2630/* free up a loop structure */
1696static void noinline 2631void ecb_cold
1697loop_destroy (EV_P) 2632ev_loop_destroy (EV_P)
1698{ 2633{
1699 int i; 2634 int i;
2635
2636#if EV_MULTIPLICITY
2637 /* mimic free (0) */
2638 if (!EV_A)
2639 return;
2640#endif
2641
2642#if EV_CLEANUP_ENABLE
2643 /* queue cleanup watchers (and execute them) */
2644 if (expect_false (cleanupcnt))
2645 {
2646 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2647 EV_INVOKE_PENDING;
2648 }
2649#endif
2650
2651#if EV_CHILD_ENABLE
2652 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2653 {
2654 ev_ref (EV_A); /* child watcher */
2655 ev_signal_stop (EV_A_ &childev);
2656 }
2657#endif
1700 2658
1701 if (ev_is_active (&pipe_w)) 2659 if (ev_is_active (&pipe_w))
1702 { 2660 {
1703 /*ev_ref (EV_A);*/ 2661 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2662 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 2663
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]); 2664 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 2665 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 2666 }
1717 2667
1718#if EV_USE_SIGNALFD 2668#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 2669 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 2670 close (sigfd);
… …
1726#endif 2676#endif
1727 2677
1728 if (backend_fd >= 0) 2678 if (backend_fd >= 0)
1729 close (backend_fd); 2679 close (backend_fd);
1730 2680
2681#if EV_USE_IOCP
2682 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2683#endif
1731#if EV_USE_PORT 2684#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2685 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2686#endif
1734#if EV_USE_KQUEUE 2687#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2688 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2715 array_free (periodic, EMPTY);
1763#endif 2716#endif
1764#if EV_FORK_ENABLE 2717#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2718 array_free (fork, EMPTY);
1766#endif 2719#endif
2720#if EV_CLEANUP_ENABLE
2721 array_free (cleanup, EMPTY);
2722#endif
1767 array_free (prepare, EMPTY); 2723 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2724 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2726 array_free (async, EMPTY);
1771#endif 2727#endif
1772 2728
1773 backend = 0; 2729 backend = 0;
2730
2731#if EV_MULTIPLICITY
2732 if (ev_is_default_loop (EV_A))
2733#endif
2734 ev_default_loop_ptr = 0;
2735#if EV_MULTIPLICITY
2736 else
2737 ev_free (EV_A);
2738#endif
1774} 2739}
1775 2740
1776#if EV_USE_INOTIFY 2741#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2742inline_size void infy_fork (EV_P);
1778#endif 2743#endif
… …
1791#endif 2756#endif
1792#if EV_USE_INOTIFY 2757#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 2758 infy_fork (EV_A);
1794#endif 2759#endif
1795 2760
2761#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 2762 if (ev_is_active (&pipe_w))
1797 { 2763 {
1798 /* this "locks" the handlers against writing to the pipe */ 2764 /* 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 2765
1805 ev_ref (EV_A); 2766 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2767 ev_io_stop (EV_A_ &pipe_w);
1807 2768
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 2769 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 2770 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 2771
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 2772 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 2773 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 2774 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 2775 }
2776#endif
1825 2777
1826 postfork = 0; 2778 postfork = 0;
1827} 2779}
1828 2780
1829#if EV_MULTIPLICITY 2781#if EV_MULTIPLICITY
1830 2782
1831struct ev_loop * 2783struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2784ev_loop_new (unsigned int flags) EV_THROW
1833{ 2785{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2786 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2787
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2788 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2789 loop_init (EV_A_ flags);
1838 2790
1839 if (ev_backend (EV_A)) 2791 if (ev_backend (EV_A))
1840 return EV_A; 2792 return EV_A;
1841 2793
2794 ev_free (EV_A);
1842 return 0; 2795 return 0;
1843} 2796}
1844 2797
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 */ 2798#endif /* multiplicity */
1858 2799
1859#if EV_VERIFY 2800#if EV_VERIFY
1860static void noinline 2801static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2802verify_watcher (EV_P_ W w)
1862{ 2803{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2805
1865 if (w->pending) 2806 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2808}
1868 2809
1869static void noinline 2810static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2811verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2812{
1872 int i; 2813 int i;
1873 2814
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2815 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2820
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2821 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2822 }
1882} 2823}
1883 2824
1884static void noinline 2825static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2826array_verify (EV_P_ W *ws, int cnt)
1886{ 2827{
1887 while (cnt--) 2828 while (cnt--)
1888 { 2829 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2832 }
1892} 2833}
1893#endif 2834#endif
1894 2835
1895#if EV_FEATURE_API 2836#if EV_FEATURE_API
1896void 2837void ecb_cold
1897ev_verify (EV_P) 2838ev_verify (EV_P) EV_THROW
1898{ 2839{
1899#if EV_VERIFY 2840#if EV_VERIFY
1900 int i; 2841 int i;
1901 WL w; 2842 WL w, w2;
1902 2843
1903 assert (activecnt >= -1); 2844 assert (activecnt >= -1);
1904 2845
1905 assert (fdchangemax >= fdchangecnt); 2846 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2847 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2849
1909 assert (anfdmax >= 0); 2850 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2851 for (i = 0; i < anfdmax; ++i)
2852 {
2853 int j = 0;
2854
1911 for (w = anfds [i].head; w; w = w->next) 2855 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2856 {
1913 verify_watcher (EV_A_ (W)w); 2857 verify_watcher (EV_A_ (W)w);
2858
2859 if (j++ & 1)
2860 {
2861 assert (("libev: io watcher list contains a loop", w != w2));
2862 w2 = w2->next;
2863 }
2864
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2865 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)); 2866 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2867 }
2868 }
1917 2869
1918 assert (timermax >= timercnt); 2870 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2871 verify_heap (EV_A_ timers, timercnt);
1920 2872
1921#if EV_PERIODIC_ENABLE 2873#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2888#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2889 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2890 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2891#endif
1940 2892
2893#if EV_CLEANUP_ENABLE
2894 assert (cleanupmax >= cleanupcnt);
2895 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2896#endif
2897
1941#if EV_ASYNC_ENABLE 2898#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2899 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2900 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2901#endif
1945 2902
… …
1962#endif 2919#endif
1963} 2920}
1964#endif 2921#endif
1965 2922
1966#if EV_MULTIPLICITY 2923#if EV_MULTIPLICITY
1967struct ev_loop * 2924struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2925#else
1970int 2926int
2927#endif
1971ev_default_loop (unsigned int flags) 2928ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2929{
1974 if (!ev_default_loop_ptr) 2930 if (!ev_default_loop_ptr)
1975 { 2931 {
1976#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2933 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2952
1997 return ev_default_loop_ptr; 2953 return ev_default_loop_ptr;
1998} 2954}
1999 2955
2000void 2956void
2001ev_default_destroy (void) 2957ev_loop_fork (EV_P) EV_THROW
2002{ 2958{
2003#if EV_MULTIPLICITY 2959 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} 2960}
2026 2961
2027/*****************************************************************************/ 2962/*****************************************************************************/
2028 2963
2029void 2964void
… …
2031{ 2966{
2032 EV_CB_INVOKE ((W)w, revents); 2967 EV_CB_INVOKE ((W)w, revents);
2033} 2968}
2034 2969
2035unsigned int 2970unsigned int
2036ev_pending_count (EV_P) 2971ev_pending_count (EV_P) EV_THROW
2037{ 2972{
2038 int pri; 2973 int pri;
2039 unsigned int count = 0; 2974 unsigned int count = 0;
2040 2975
2041 for (pri = NUMPRI; pri--; ) 2976 for (pri = NUMPRI; pri--; )
… …
2045} 2980}
2046 2981
2047void noinline 2982void noinline
2048ev_invoke_pending (EV_P) 2983ev_invoke_pending (EV_P)
2049{ 2984{
2050 int pri; 2985 pendingpri = NUMPRI;
2051 2986
2052 for (pri = NUMPRI; pri--; ) 2987 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2988 {
2989 --pendingpri;
2990
2053 while (pendingcnt [pri]) 2991 while (pendingcnt [pendingpri])
2054 { 2992 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2993 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 2994
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; 2995 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2996 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2997 EV_FREQUENT_CHECK;
2063 } 2998 }
2999 }
2064} 3000}
2065 3001
2066#if EV_IDLE_ENABLE 3002#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3003/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3004/* only when higher priorities are idle" logic */
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3061 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3062 }
2127} 3063}
2128 3064
2129#if EV_PERIODIC_ENABLE 3065#if EV_PERIODIC_ENABLE
3066
3067static void noinline
3068periodic_recalc (EV_P_ ev_periodic *w)
3069{
3070 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3071 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3072
3073 /* the above almost always errs on the low side */
3074 while (at <= ev_rt_now)
3075 {
3076 ev_tstamp nat = at + w->interval;
3077
3078 /* when resolution fails us, we use ev_rt_now */
3079 if (expect_false (nat == at))
3080 {
3081 at = ev_rt_now;
3082 break;
3083 }
3084
3085 at = nat;
3086 }
3087
3088 ev_at (w) = at;
3089}
3090
2130/* make periodics pending */ 3091/* make periodics pending */
2131inline_size void 3092inline_size void
2132periodics_reify (EV_P) 3093periodics_reify (EV_P)
2133{ 3094{
2134 EV_FREQUENT_CHECK; 3095 EV_FREQUENT_CHECK;
2135 3096
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3097 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3098 {
2138 int feed_count = 0;
2139
2140 do 3099 do
2141 { 3100 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3101 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3102
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3103 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3112 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3113 downheap (periodics, periodiccnt, HEAP0);
2155 } 3114 }
2156 else if (w->interval) 3115 else if (w->interval)
2157 { 3116 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3117 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]); 3118 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3119 downheap (periodics, periodiccnt, HEAP0);
2174 } 3120 }
2175 else 3121 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3122 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3130 }
2185} 3131}
2186 3132
2187/* simply recalculate all periodics */ 3133/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3134/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3135static void noinline ecb_cold
2190periodics_reschedule (EV_P) 3136periodics_reschedule (EV_P)
2191{ 3137{
2192 int i; 3138 int i;
2193 3139
2194 /* adjust periodics after time jump */ 3140 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3143 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3144
2199 if (w->reschedule_cb) 3145 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3146 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3147 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3148 periodic_recalc (EV_A_ w);
2203 3149
2204 ANHE_at_cache (periodics [i]); 3150 ANHE_at_cache (periodics [i]);
2205 } 3151 }
2206 3152
2207 reheap (periodics, periodiccnt); 3153 reheap (periodics, periodiccnt);
2208} 3154}
2209#endif 3155#endif
2210 3156
2211/* adjust all timers by a given offset */ 3157/* adjust all timers by a given offset */
2212static void noinline 3158static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3159timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3160{
2215 int i; 3161 int i;
2216 3162
2217 for (i = 0; i < timercnt; ++i) 3163 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3200 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3201 * in the unlikely event of having been preempted here.
2256 */ 3202 */
2257 for (i = 4; --i; ) 3203 for (i = 4; --i; )
2258 { 3204 {
3205 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3206 rtmn_diff = ev_rt_now - mn_now;
2260 3207
3208 diff = odiff - rtmn_diff;
3209
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3210 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 3211 return; /* all is well */
2263 3212
2264 ev_rt_now = ev_time (); 3213 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3214 mn_now = get_clock ();
2266 now_floor = mn_now; 3215 now_floor = mn_now;
… …
2288 3237
2289 mn_now = ev_rt_now; 3238 mn_now = ev_rt_now;
2290 } 3239 }
2291} 3240}
2292 3241
2293void 3242int
2294ev_loop (EV_P_ int flags) 3243ev_run (EV_P_ int flags)
2295{ 3244{
2296#if EV_FEATURE_API 3245#if EV_FEATURE_API
2297 ++loop_depth; 3246 ++loop_depth;
2298#endif 3247#endif
2299 3248
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3249 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3250
2302 loop_done = EVUNLOOP_CANCEL; 3251 loop_done = EVBREAK_CANCEL;
2303 3252
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3253 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3254
2306 do 3255 do
2307 { 3256 {
… …
2350 /* calculate blocking time */ 3299 /* calculate blocking time */
2351 { 3300 {
2352 ev_tstamp waittime = 0.; 3301 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3302 ev_tstamp sleeptime = 0.;
2354 3303
3304 /* remember old timestamp for io_blocktime calculation */
3305 ev_tstamp prev_mn_now = mn_now;
3306
3307 /* update time to cancel out callback processing overhead */
3308 time_update (EV_A_ 1e100);
3309
3310 /* from now on, we want a pipe-wake-up */
3311 pipe_write_wanted = 1;
3312
3313 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3314
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3315 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3316 {
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; 3317 waittime = MAX_BLOCKTIME;
2364 3318
2365 if (timercnt) 3319 if (timercnt)
2366 { 3320 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3322 if (waittime > to) waittime = to;
2369 } 3323 }
2370 3324
2371#if EV_PERIODIC_ENABLE 3325#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3326 if (periodiccnt)
2373 { 3327 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3329 if (waittime > to) waittime = to;
2376 } 3330 }
2377#endif 3331#endif
2378 3332
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3333 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3334 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3335 waittime = timeout_blocktime;
3336
3337 /* at this point, we NEED to wait, so we have to ensure */
3338 /* to pass a minimum nonzero value to the backend */
3339 if (expect_false (waittime < backend_mintime))
3340 waittime = backend_mintime;
2382 3341
2383 /* extra check because io_blocktime is commonly 0 */ 3342 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3343 if (expect_false (io_blocktime))
2385 { 3344 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3345 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3346
2388 if (sleeptime > waittime - backend_fudge) 3347 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3348 sleeptime = waittime - backend_mintime;
2390 3349
2391 if (expect_true (sleeptime > 0.)) 3350 if (expect_true (sleeptime > 0.))
2392 { 3351 {
2393 ev_sleep (sleeptime); 3352 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3353 waittime -= sleeptime;
… …
2397 } 3356 }
2398 3357
2399#if EV_FEATURE_API 3358#if EV_FEATURE_API
2400 ++loop_count; 3359 ++loop_count;
2401#endif 3360#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3361 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3362 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3363 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3364
3365 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3366
3367 ECB_MEMORY_FENCE_ACQUIRE;
3368 if (pipe_write_skipped)
3369 {
3370 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3371 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3372 }
3373
2405 3374
2406 /* update ev_rt_now, do magic */ 3375 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3376 time_update (EV_A_ waittime + sleeptime);
2408 } 3377 }
2409 3378
… …
2427 EV_INVOKE_PENDING; 3396 EV_INVOKE_PENDING;
2428 } 3397 }
2429 while (expect_true ( 3398 while (expect_true (
2430 activecnt 3399 activecnt
2431 && !loop_done 3400 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3401 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3402 ));
2434 3403
2435 if (loop_done == EVUNLOOP_ONE) 3404 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3405 loop_done = EVBREAK_CANCEL;
2437 3406
2438#if EV_FEATURE_API 3407#if EV_FEATURE_API
2439 --loop_depth; 3408 --loop_depth;
2440#endif 3409#endif
3410
3411 return activecnt;
2441} 3412}
2442 3413
2443void 3414void
2444ev_unloop (EV_P_ int how) 3415ev_break (EV_P_ int how) EV_THROW
2445{ 3416{
2446 loop_done = how; 3417 loop_done = how;
2447} 3418}
2448 3419
2449void 3420void
2450ev_ref (EV_P) 3421ev_ref (EV_P) EV_THROW
2451{ 3422{
2452 ++activecnt; 3423 ++activecnt;
2453} 3424}
2454 3425
2455void 3426void
2456ev_unref (EV_P) 3427ev_unref (EV_P) EV_THROW
2457{ 3428{
2458 --activecnt; 3429 --activecnt;
2459} 3430}
2460 3431
2461void 3432void
2462ev_now_update (EV_P) 3433ev_now_update (EV_P) EV_THROW
2463{ 3434{
2464 time_update (EV_A_ 1e100); 3435 time_update (EV_A_ 1e100);
2465} 3436}
2466 3437
2467void 3438void
2468ev_suspend (EV_P) 3439ev_suspend (EV_P) EV_THROW
2469{ 3440{
2470 ev_now_update (EV_A); 3441 ev_now_update (EV_A);
2471} 3442}
2472 3443
2473void 3444void
2474ev_resume (EV_P) 3445ev_resume (EV_P) EV_THROW
2475{ 3446{
2476 ev_tstamp mn_prev = mn_now; 3447 ev_tstamp mn_prev = mn_now;
2477 3448
2478 ev_now_update (EV_A); 3449 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3450 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3489 w->pending = 0;
2519 } 3490 }
2520} 3491}
2521 3492
2522int 3493int
2523ev_clear_pending (EV_P_ void *w) 3494ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3495{
2525 W w_ = (W)w; 3496 W w_ = (W)w;
2526 int pending = w_->pending; 3497 int pending = w_->pending;
2527 3498
2528 if (expect_true (pending)) 3499 if (expect_true (pending))
… …
2561} 3532}
2562 3533
2563/*****************************************************************************/ 3534/*****************************************************************************/
2564 3535
2565void noinline 3536void noinline
2566ev_io_start (EV_P_ ev_io *w) 3537ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3538{
2568 int fd = w->fd; 3539 int fd = w->fd;
2569 3540
2570 if (expect_false (ev_is_active (w))) 3541 if (expect_false (ev_is_active (w)))
2571 return; 3542 return;
… …
2577 3548
2578 ev_start (EV_A_ (W)w, 1); 3549 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3550 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3551 wlist_add (&anfds[fd].head, (WL)w);
2581 3552
3553 /* common bug, apparently */
3554 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3555
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3556 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3557 w->events &= ~EV__IOFDSET;
2584 3558
2585 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2586} 3560}
2587 3561
2588void noinline 3562void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3563ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3564{
2591 clear_pending (EV_A_ (W)w); 3565 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2593 return; 3567 return;
2594 3568
… …
2597 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2598 3572
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3573 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3574 ev_stop (EV_A_ (W)w);
2601 3575
2602 fd_change (EV_A_ w->fd, 1); 3576 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3577
2604 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2605} 3579}
2606 3580
2607void noinline 3581void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3582ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3583{
2610 if (expect_false (ev_is_active (w))) 3584 if (expect_false (ev_is_active (w)))
2611 return; 3585 return;
2612 3586
2613 ev_at (w) += mn_now; 3587 ev_at (w) += mn_now;
… …
2627 3601
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3602 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3603}
2630 3604
2631void noinline 3605void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3606ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3607{
2634 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2636 return; 3610 return;
2637 3611
… …
2657 3631
2658 EV_FREQUENT_CHECK; 3632 EV_FREQUENT_CHECK;
2659} 3633}
2660 3634
2661void noinline 3635void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3636ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3637{
2664 EV_FREQUENT_CHECK; 3638 EV_FREQUENT_CHECK;
3639
3640 clear_pending (EV_A_ (W)w);
2665 3641
2666 if (ev_is_active (w)) 3642 if (ev_is_active (w))
2667 { 3643 {
2668 if (w->repeat) 3644 if (w->repeat)
2669 { 3645 {
… …
2682 3658
2683 EV_FREQUENT_CHECK; 3659 EV_FREQUENT_CHECK;
2684} 3660}
2685 3661
2686ev_tstamp 3662ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3663ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3664{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3666}
2691 3667
2692#if EV_PERIODIC_ENABLE 3668#if EV_PERIODIC_ENABLE
2693void noinline 3669void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3670ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3671{
2696 if (expect_false (ev_is_active (w))) 3672 if (expect_false (ev_is_active (w)))
2697 return; 3673 return;
2698 3674
2699 if (w->reschedule_cb) 3675 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3676 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3677 else if (w->interval)
2702 { 3678 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3679 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 */ 3680 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3681 }
2707 else 3682 else
2708 ev_at (w) = w->offset; 3683 ev_at (w) = w->offset;
2709 3684
2710 EV_FREQUENT_CHECK; 3685 EV_FREQUENT_CHECK;
… …
2720 3695
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3696 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3697}
2723 3698
2724void noinline 3699void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3700ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3701{
2727 clear_pending (EV_A_ (W)w); 3702 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3703 if (expect_false (!ev_is_active (w)))
2729 return; 3704 return;
2730 3705
… …
2748 3723
2749 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2750} 3725}
2751 3726
2752void noinline 3727void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3728ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3729{
2755 /* TODO: use adjustheap and recalculation */ 3730 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3731 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3732 ev_periodic_start (EV_A_ w);
2758} 3733}
… …
2763#endif 3738#endif
2764 3739
2765#if EV_SIGNAL_ENABLE 3740#if EV_SIGNAL_ENABLE
2766 3741
2767void noinline 3742void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3743ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3744{
2770 if (expect_false (ev_is_active (w))) 3745 if (expect_false (ev_is_active (w)))
2771 return; 3746 return;
2772 3747
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3748 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2775#if EV_MULTIPLICITY 3750#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 3751 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3752 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 3753
2779 signals [w->signum - 1].loop = EV_A; 3754 signals [w->signum - 1].loop = EV_A;
3755 ECB_MEMORY_FENCE_RELEASE;
2780#endif 3756#endif
2781 3757
2782 EV_FREQUENT_CHECK; 3758 EV_FREQUENT_CHECK;
2783 3759
2784#if EV_USE_SIGNALFD 3760#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 3807 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3808 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3810 sigaction (w->signum, &sa, 0);
2835 3811
3812 if (origflags & EVFLAG_NOSIGMASK)
3813 {
2836 sigemptyset (&sa.sa_mask); 3814 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3815 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3816 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3817 }
2839#endif 3818#endif
2840 } 3819 }
2841 3820
2842 EV_FREQUENT_CHECK; 3821 EV_FREQUENT_CHECK;
2843} 3822}
2844 3823
2845void noinline 3824void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3825ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3826{
2848 clear_pending (EV_A_ (W)w); 3827 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3828 if (expect_false (!ev_is_active (w)))
2850 return; 3829 return;
2851 3830
… …
2882#endif 3861#endif
2883 3862
2884#if EV_CHILD_ENABLE 3863#if EV_CHILD_ENABLE
2885 3864
2886void 3865void
2887ev_child_start (EV_P_ ev_child *w) 3866ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3867{
2889#if EV_MULTIPLICITY 3868#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3870#endif
2892 if (expect_false (ev_is_active (w))) 3871 if (expect_false (ev_is_active (w)))
… …
2899 3878
2900 EV_FREQUENT_CHECK; 3879 EV_FREQUENT_CHECK;
2901} 3880}
2902 3881
2903void 3882void
2904ev_child_stop (EV_P_ ev_child *w) 3883ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3884{
2906 clear_pending (EV_A_ (W)w); 3885 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3886 if (expect_false (!ev_is_active (w)))
2908 return; 3887 return;
2909 3888
… …
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 3916
2938static void noinline 3917static void noinline
2939infy_add (EV_P_ ev_stat *w) 3918infy_add (EV_P_ ev_stat *w)
2940{ 3919{
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); 3920 w->wd = inotify_add_watch (fs_fd, w->path,
3921 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3922 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3923 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 3924
2943 if (w->wd >= 0) 3925 if (w->wd >= 0)
2944 { 3926 {
2945 struct statfs sfs; 3927 struct statfs sfs;
2946 3928
… …
2950 3932
2951 if (!fs_2625) 3933 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3934 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 3935 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 3936 && (sfs.f_type == 0x1373 /* devfs */
3937 || sfs.f_type == 0x4006 /* fat */
3938 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 3939 || sfs.f_type == 0xEF53 /* ext2/3 */
3940 || sfs.f_type == 0x72b6 /* jffs2 */
3941 || sfs.f_type == 0x858458f6 /* ramfs */
3942 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 3943 || sfs.f_type == 0x3153464a /* jfs */
3944 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 3945 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 3946 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 3947 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 3949 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 3951 }
… …
2984 if (!pend || pend == path) 3972 if (!pend || pend == path)
2985 break; 3973 break;
2986 3974
2987 *pend = 0; 3975 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3976 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3977 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3979 }
2992 } 3980 }
2993 3981
2994 if (w->wd >= 0) 3982 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4049 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4050 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4051 }
3064} 4052}
3065 4053
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 4054inline_size void ecb_cold
3099ev_check_2625 (EV_P) 4055ev_check_2625 (EV_P)
3100{ 4056{
3101 /* kernels < 2.6.25 are borked 4057 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4058 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4059 */
… …
3108} 4064}
3109 4065
3110inline_size int 4066inline_size int
3111infy_newfd (void) 4067infy_newfd (void)
3112{ 4068{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4069#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4070 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4071 if (fd >= 0)
3116 return fd; 4072 return fd;
3117#endif 4073#endif
3118 return inotify_init (); 4074 return inotify_init ();
… …
3193#else 4149#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4150# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4151#endif
3196 4152
3197void 4153void
3198ev_stat_stat (EV_P_ ev_stat *w) 4154ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 4155{
3200 if (lstat (w->path, &w->attr) < 0) 4156 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4157 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4158 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4159 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4198 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4199 }
3244} 4200}
3245 4201
3246void 4202void
3247ev_stat_start (EV_P_ ev_stat *w) 4203ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 4204{
3249 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
3250 return; 4206 return;
3251 4207
3252 ev_stat_stat (EV_A_ w); 4208 ev_stat_stat (EV_A_ w);
… …
3273 4229
3274 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
3275} 4231}
3276 4232
3277void 4233void
3278ev_stat_stop (EV_P_ ev_stat *w) 4234ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 4235{
3280 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
3282 return; 4238 return;
3283 4239
… …
3299} 4255}
3300#endif 4256#endif
3301 4257
3302#if EV_IDLE_ENABLE 4258#if EV_IDLE_ENABLE
3303void 4259void
3304ev_idle_start (EV_P_ ev_idle *w) 4260ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4261{
3306 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3307 return; 4263 return;
3308 4264
3309 pri_adjust (EV_A_ (W)w); 4265 pri_adjust (EV_A_ (W)w);
… …
3322 4278
3323 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
3324} 4280}
3325 4281
3326void 4282void
3327ev_idle_stop (EV_P_ ev_idle *w) 4283ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4284{
3329 clear_pending (EV_A_ (W)w); 4285 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4286 if (expect_false (!ev_is_active (w)))
3331 return; 4287 return;
3332 4288
… …
3346} 4302}
3347#endif 4303#endif
3348 4304
3349#if EV_PREPARE_ENABLE 4305#if EV_PREPARE_ENABLE
3350void 4306void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4307ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4308{
3353 if (expect_false (ev_is_active (w))) 4309 if (expect_false (ev_is_active (w)))
3354 return; 4310 return;
3355 4311
3356 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
… …
3361 4317
3362 EV_FREQUENT_CHECK; 4318 EV_FREQUENT_CHECK;
3363} 4319}
3364 4320
3365void 4321void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4322ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4323{
3368 clear_pending (EV_A_ (W)w); 4324 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4325 if (expect_false (!ev_is_active (w)))
3370 return; 4326 return;
3371 4327
… …
3384} 4340}
3385#endif 4341#endif
3386 4342
3387#if EV_CHECK_ENABLE 4343#if EV_CHECK_ENABLE
3388void 4344void
3389ev_check_start (EV_P_ ev_check *w) 4345ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4346{
3391 if (expect_false (ev_is_active (w))) 4347 if (expect_false (ev_is_active (w)))
3392 return; 4348 return;
3393 4349
3394 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
… …
3399 4355
3400 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
3401} 4357}
3402 4358
3403void 4359void
3404ev_check_stop (EV_P_ ev_check *w) 4360ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4361{
3406 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
3408 return; 4364 return;
3409 4365
… …
3422} 4378}
3423#endif 4379#endif
3424 4380
3425#if EV_EMBED_ENABLE 4381#if EV_EMBED_ENABLE
3426void noinline 4382void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4383ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4384{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4385 ev_run (w->other, EVRUN_NOWAIT);
3430} 4386}
3431 4387
3432static void 4388static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4389embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4390{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4391 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4392
3437 if (ev_cb (w)) 4393 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4394 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4395 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4396 ev_run (w->other, EVRUN_NOWAIT);
3441} 4397}
3442 4398
3443static void 4399static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4400embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4401{
… …
3449 EV_P = w->other; 4405 EV_P = w->other;
3450 4406
3451 while (fdchangecnt) 4407 while (fdchangecnt)
3452 { 4408 {
3453 fd_reify (EV_A); 4409 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4410 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4411 }
3456 } 4412 }
3457} 4413}
3458 4414
3459static void 4415static void
… …
3465 4421
3466 { 4422 {
3467 EV_P = w->other; 4423 EV_P = w->other;
3468 4424
3469 ev_loop_fork (EV_A); 4425 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4426 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4427 }
3472 4428
3473 ev_embed_start (EV_A_ w); 4429 ev_embed_start (EV_A_ w);
3474} 4430}
3475 4431
… …
3480 ev_idle_stop (EV_A_ idle); 4436 ev_idle_stop (EV_A_ idle);
3481} 4437}
3482#endif 4438#endif
3483 4439
3484void 4440void
3485ev_embed_start (EV_P_ ev_embed *w) 4441ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4442{
3487 if (expect_false (ev_is_active (w))) 4443 if (expect_false (ev_is_active (w)))
3488 return; 4444 return;
3489 4445
3490 { 4446 {
… …
3511 4467
3512 EV_FREQUENT_CHECK; 4468 EV_FREQUENT_CHECK;
3513} 4469}
3514 4470
3515void 4471void
3516ev_embed_stop (EV_P_ ev_embed *w) 4472ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4473{
3518 clear_pending (EV_A_ (W)w); 4474 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4475 if (expect_false (!ev_is_active (w)))
3520 return; 4476 return;
3521 4477
… …
3531} 4487}
3532#endif 4488#endif
3533 4489
3534#if EV_FORK_ENABLE 4490#if EV_FORK_ENABLE
3535void 4491void
3536ev_fork_start (EV_P_ ev_fork *w) 4492ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4493{
3538 if (expect_false (ev_is_active (w))) 4494 if (expect_false (ev_is_active (w)))
3539 return; 4495 return;
3540 4496
3541 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
… …
3546 4502
3547 EV_FREQUENT_CHECK; 4503 EV_FREQUENT_CHECK;
3548} 4504}
3549 4505
3550void 4506void
3551ev_fork_stop (EV_P_ ev_fork *w) 4507ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4508{
3553 clear_pending (EV_A_ (W)w); 4509 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4510 if (expect_false (!ev_is_active (w)))
3555 return; 4511 return;
3556 4512
… …
3567 4523
3568 EV_FREQUENT_CHECK; 4524 EV_FREQUENT_CHECK;
3569} 4525}
3570#endif 4526#endif
3571 4527
4528#if EV_CLEANUP_ENABLE
4529void
4530ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4531{
4532 if (expect_false (ev_is_active (w)))
4533 return;
4534
4535 EV_FREQUENT_CHECK;
4536
4537 ev_start (EV_A_ (W)w, ++cleanupcnt);
4538 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4539 cleanups [cleanupcnt - 1] = w;
4540
4541 /* cleanup watchers should never keep a refcount on the loop */
4542 ev_unref (EV_A);
4543 EV_FREQUENT_CHECK;
4544}
4545
4546void
4547ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4548{
4549 clear_pending (EV_A_ (W)w);
4550 if (expect_false (!ev_is_active (w)))
4551 return;
4552
4553 EV_FREQUENT_CHECK;
4554 ev_ref (EV_A);
4555
4556 {
4557 int active = ev_active (w);
4558
4559 cleanups [active - 1] = cleanups [--cleanupcnt];
4560 ev_active (cleanups [active - 1]) = active;
4561 }
4562
4563 ev_stop (EV_A_ (W)w);
4564
4565 EV_FREQUENT_CHECK;
4566}
4567#endif
4568
3572#if EV_ASYNC_ENABLE 4569#if EV_ASYNC_ENABLE
3573void 4570void
3574ev_async_start (EV_P_ ev_async *w) 4571ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4572{
3576 if (expect_false (ev_is_active (w))) 4573 if (expect_false (ev_is_active (w)))
3577 return; 4574 return;
4575
4576 w->sent = 0;
3578 4577
3579 evpipe_init (EV_A); 4578 evpipe_init (EV_A);
3580 4579
3581 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
3582 4581
… …
3586 4585
3587 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3588} 4587}
3589 4588
3590void 4589void
3591ev_async_stop (EV_P_ ev_async *w) 4590ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4591{
3593 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3595 return; 4594 return;
3596 4595
… …
3607 4606
3608 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3609} 4608}
3610 4609
3611void 4610void
3612ev_async_send (EV_P_ ev_async *w) 4611ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4612{
3614 w->sent = 1; 4613 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4614 evpipe_write (EV_A_ &async_pending);
3616} 4615}
3617#endif 4616#endif
… …
3654 4653
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4654 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4655}
3657 4656
3658void 4657void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4658ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4659{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4660 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4661
3663 if (expect_false (!once)) 4662 if (expect_false (!once))
3664 { 4663 {
… …
3685} 4684}
3686 4685
3687/*****************************************************************************/ 4686/*****************************************************************************/
3688 4687
3689#if EV_WALK_ENABLE 4688#if EV_WALK_ENABLE
3690void 4689void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4690ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4691{
3693 int i, j; 4692 int i, j;
3694 ev_watcher_list *wl, *wn; 4693 ev_watcher_list *wl, *wn;
3695 4694
3696 if (types & (EV_IO | EV_EMBED)) 4695 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4738 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4739#endif
3741 4740
3742#if EV_IDLE_ENABLE 4741#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4742 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4743 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4744 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4745 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4746#endif
3748 4747
3749#if EV_FORK_ENABLE 4748#if EV_FORK_ENABLE
… …
3802 4801
3803#if EV_MULTIPLICITY 4802#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4803 #include "ev_wrap.h"
3805#endif 4804#endif
3806 4805
3807#ifdef __cplusplus
3808}
3809#endif
3810

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