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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 1.452 by root, Mon Feb 18 03:20:29 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 0x00010002
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/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
486#endif 566 #endif
567#endif
487 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
490#define inline_size static inline 1224#define inline_size ecb_inline
491 1225
492#if EV_FEATURE_CODE 1226#if EV_FEATURE_CODE
493# define inline_speed static inline 1227# define inline_speed ecb_inline
494#else 1228#else
495# define inline_speed static noinline 1229# define inline_speed static noinline
496#endif 1230#endif
497 1231
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
537# include "ev_win32.c" 1271# include "ev_win32.c"
538#endif 1272#endif
539 1273
540/*****************************************************************************/ 1274/*****************************************************************************/
541 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
542#if EV_AVOID_STDIO 1366#if EV_AVOID_STDIO
543static void noinline 1367static void noinline ecb_cold
544ev_printerr (const char *msg) 1368ev_printerr (const char *msg)
545{ 1369{
546 write (STDERR_FILENO, msg, strlen (msg)); 1370 write (STDERR_FILENO, msg, strlen (msg));
547} 1371}
548#endif 1372#endif
549 1373
550static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
551 1375
552void 1376void ecb_cold
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
554{ 1378{
555 syserr_cb = cb; 1379 syserr_cb = cb;
556} 1380}
557 1381
558static void noinline 1382static void noinline ecb_cold
559ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
560{ 1384{
561 if (!msg) 1385 if (!msg)
562 msg = "(libev) system error"; 1386 msg = "(libev) system error";
563 1387
564 if (syserr_cb) 1388 if (syserr_cb)
565 syserr_cb (msg); 1389 syserr_cb (msg);
566 else 1390 else
567 { 1391 {
568#if EV_AVOID_STDIO 1392#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1393 ev_printerr (msg);
572 ev_printerr (": "); 1394 ev_printerr (": ");
573 ev_printerr (err); 1395 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1396 ev_printerr ("\n");
575#else 1397#else
576 perror (msg); 1398 perror (msg);
577#endif 1399#endif
578 abort (); 1400 abort ();
579 } 1401 }
580} 1402}
581 1403
582static void * 1404static void *
583ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
584{ 1406{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
591 */ 1412 */
592 1413
593 if (size) 1414 if (size)
594 return realloc (ptr, size); 1415 return realloc (ptr, size);
595 1416
596 free (ptr); 1417 free (ptr);
597 return 0; 1418 return 0;
598#endif
599} 1419}
600 1420
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
602 1422
603void 1423void ecb_cold
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
605{ 1425{
606 alloc = cb; 1426 alloc = cb;
607} 1427}
608 1428
609inline_speed void * 1429inline_speed void *
… …
612 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
613 1433
614 if (!ptr && size) 1434 if (!ptr && size)
615 { 1435 {
616#if EV_AVOID_STDIO 1436#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1438#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1440#endif
621 abort (); 1441 abort ();
622 } 1442 }
623 1443
624 return ptr; 1444 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1462 unsigned char unused;
643#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1465#endif
646#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
648#endif 1471#endif
649} ANFD; 1472} ANFD;
650 1473
651/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
652typedef struct 1475typedef struct
… …
694 #undef VAR 1517 #undef VAR
695 }; 1518 };
696 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
697 1520
698 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1523
701#else 1524#else
702 1525
703 ev_tstamp ev_rt_now; 1526 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; 1527 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1528 #include "ev_vars.h"
706 #undef VAR 1529 #undef VAR
707 1530
708 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1540# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1541# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1543#endif
721 1544
722#define EVUNLOOP_RECURSE 0x80 1545#define EVBREAK_RECURSE 0x80
723 1546
724/*****************************************************************************/ 1547/*****************************************************************************/
725 1548
726#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1550ev_tstamp
728ev_time (void) 1551ev_time (void) EV_THROW
729{ 1552{
730#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
732 { 1555 {
733 struct timespec ts; 1556 struct timespec ts;
… …
757 return ev_time (); 1580 return ev_time ();
758} 1581}
759 1582
760#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
761ev_tstamp 1584ev_tstamp
762ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
763{ 1586{
764 return ev_rt_now; 1587 return ev_rt_now;
765} 1588}
766#endif 1589#endif
767 1590
768void 1591void
769ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
770{ 1593{
771 if (delay > 0.) 1594 if (delay > 0.)
772 { 1595 {
773#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
774 struct timespec ts; 1597 struct timespec ts;
775 1598
776 EV_TS_SET (ts, delay); 1599 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1601#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
780#else 1603#else
781 struct timeval tv; 1604 struct timeval tv;
782 1605
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1625
803 do 1626 do
804 ncur <<= 1; 1627 ncur <<= 1;
805 while (cnt > ncur); 1628 while (cnt > ncur);
806 1629
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1632 {
810 ncur *= elem; 1633 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1637 }
815 1638
816 return ncur; 1639 return ncur;
817} 1640}
818 1641
819static noinline void * 1642static void * noinline ecb_cold
820array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1644{
822 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
824} 1647}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1651
829#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
831 { \ 1654 { \
832 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1659 }
837 1660
… …
855pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1679{
857} 1680}
858 1681
859void noinline 1682void noinline
860ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
861{ 1684{
862 W w_ = (W)w; 1685 W w_ = (W)w;
863 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
864 1687
865 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
873 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
874} 1699}
875 1700
876inline_speed void 1701inline_speed void
877feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
878{ 1703{
… …
924 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
926} 1751}
927 1752
928void 1753void
929ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
930{ 1755{
931 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
933} 1758}
934 1759
… …
937inline_size void 1762inline_size void
938fd_reify (EV_P) 1763fd_reify (EV_P)
939{ 1764{
940 int i; 1765 int i;
941 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
942 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
943 { 1793 {
944 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
946 ev_io *w; 1796 ev_io *w;
947 1797
948 unsigned char events = 0; 1798 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify;
949 1800
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1801 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 1802
953#if EV_SELECT_IS_WINSOCKET 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 1804 {
956 unsigned long arg; 1805 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1806
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1808 anfd->events |= (unsigned char)w->events;
1809
1810 if (o_events != anfd->events)
1811 o_reify = EV__IOFDSET; /* actually |= */
959 } 1812 }
960#endif
961 1813
962 { 1814 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); 1815 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 1816 }
973 1817
974 fdchangecnt = 0; 1818 fdchangecnt = 0;
975} 1819}
976 1820
… …
988 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
989 } 1833 }
990} 1834}
991 1835
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 1837inline_speed void ecb_cold
994fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
995{ 1839{
996 ev_io *w; 1840 ev_io *w;
997 1841
998 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 1846 }
1003} 1847}
1004 1848
1005/* check whether the given fd is actually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 1850inline_size int ecb_cold
1007fd_valid (int fd) 1851fd_valid (int fd)
1008{ 1852{
1009#ifdef _WIN32 1853#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 1855#else
1012 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
1013#endif 1857#endif
1014} 1858}
1015 1859
1016/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
1017static void noinline 1861static void noinline ecb_cold
1018fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
1019{ 1863{
1020 int fd; 1864 int fd;
1021 1865
1022 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
1026} 1870}
1027 1871
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 1873static void noinline ecb_cold
1030fd_enomem (EV_P) 1874fd_enomem (EV_P)
1031{ 1875{
1032 int fd; 1876 int fd;
1033 1877
1034 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
… …
1229 2073
1230/*****************************************************************************/ 2074/*****************************************************************************/
1231 2075
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2077
1234static void noinline 2078static void noinline ecb_cold
1235evpipe_init (EV_P) 2079evpipe_init (EV_P)
1236{ 2080{
1237 if (!ev_is_active (&pipe_w)) 2081 if (!ev_is_active (&pipe_w))
1238 { 2082 {
2083 int fds [2];
2084
1239# if EV_USE_EVENTFD 2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2088 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2089 fds [1] = eventfd (0, 0);
1243 2090
1244 if (evfd >= 0) 2091 if (fds [1] < 0)
2092# endif
1245 { 2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
1246 evpipe [0] = -1; 2102 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2103
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
2123inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{
2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2127
2128 if (expect_true (*flag))
2129 return;
2130
2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
2147#if EV_USE_EVENTFD
2148 if (evpipe [0] < 0)
2149 {
2150 uint64_t counter = 1;
2151 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2152 }
1250 else 2153 else
1251# endif 2154#endif
1252 { 2155 {
1253 while (pipe (evpipe)) 2156#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1255 2158 DWORD sent;
1256 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1257 fd_intern (evpipe [1]); 2160 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1259 } 2165 }
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 2166
1291 errno = old_errno; 2167 errno = old_errno;
1292 } 2168 }
1293} 2169}
1294 2170
… …
1297static void 2173static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2175{
1300 int i; 2176 int i;
1301 2177
2178 if (revents & EV_READ)
2179 {
1302#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1304 { 2182 {
1305 uint64_t counter; 2183 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2185 }
1308 else 2186 else
1309#endif 2187#endif
1310 { 2188 {
1311 char dummy; 2189 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1313 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
1314 } 2201 }
1315 2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2208 if (sig_pending)
1317 { 2209 {
1318 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1319 2213
1320 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2217 }
2218#endif
1324 2219
1325#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1326 if (async_pending) 2221 if (async_pending)
1327 { 2222 {
1328 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1329 2226
1330 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1332 { 2229 {
1333 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2233 }
1336 } 2234 }
1337#endif 2235#endif
1338} 2236}
1339 2237
1340/*****************************************************************************/ 2238/*****************************************************************************/
1341 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 ECB_MEMORY_FENCE_ACQUIRE;
2245 EV_P = signals [signum - 1].loop;
2246
2247 if (!EV_A)
2248 return;
2249#endif
2250
2251 signals [signum - 1].pending = 1;
2252 evpipe_write (EV_A_ &sig_pending);
2253}
2254
1342static void 2255static void
1343ev_sighandler (int signum) 2256ev_sighandler (int signum)
1344{ 2257{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2258#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2259 signal (signum, ev_sighandler);
1351#endif 2260#endif
1352 2261
1353 signals [signum - 1].pending = 1; 2262 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2263}
1356 2264
1357void noinline 2265void noinline
1358ev_feed_signal_event (EV_P_ int signum) 2266ev_feed_signal_event (EV_P_ int signum) EV_THROW
1359{ 2267{
1360 WL w; 2268 WL w;
1361 2269
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2270 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2271 return;
1364 2272
1365 --signum; 2273 --signum;
1366 2274
1367#if EV_MULTIPLICITY 2275#if EV_MULTIPLICITY
… …
1371 if (expect_false (signals [signum].loop != EV_A)) 2279 if (expect_false (signals [signum].loop != EV_A))
1372 return; 2280 return;
1373#endif 2281#endif
1374 2282
1375 signals [signum].pending = 0; 2283 signals [signum].pending = 0;
2284 ECB_MEMORY_FENCE_RELEASE;
1376 2285
1377 for (w = signals [signum].head; w; w = w->next) 2286 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2287 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2288}
1380 2289
… …
1459 2368
1460#endif 2369#endif
1461 2370
1462/*****************************************************************************/ 2371/*****************************************************************************/
1463 2372
2373#if EV_USE_IOCP
2374# include "ev_iocp.c"
2375#endif
1464#if EV_USE_PORT 2376#if EV_USE_PORT
1465# include "ev_port.c" 2377# include "ev_port.c"
1466#endif 2378#endif
1467#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2380# include "ev_kqueue.c"
… …
1475#endif 2387#endif
1476#if EV_USE_SELECT 2388#if EV_USE_SELECT
1477# include "ev_select.c" 2389# include "ev_select.c"
1478#endif 2390#endif
1479 2391
1480int 2392int ecb_cold
1481ev_version_major (void) 2393ev_version_major (void) EV_THROW
1482{ 2394{
1483 return EV_VERSION_MAJOR; 2395 return EV_VERSION_MAJOR;
1484} 2396}
1485 2397
1486int 2398int ecb_cold
1487ev_version_minor (void) 2399ev_version_minor (void) EV_THROW
1488{ 2400{
1489 return EV_VERSION_MINOR; 2401 return EV_VERSION_MINOR;
1490} 2402}
1491 2403
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2404/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2405int inline_size ecb_cold
1494enable_secure (void) 2406enable_secure (void)
1495{ 2407{
1496#ifdef _WIN32 2408#ifdef _WIN32
1497 return 0; 2409 return 0;
1498#else 2410#else
1499 return getuid () != geteuid () 2411 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2412 || getgid () != getegid ();
1501#endif 2413#endif
1502} 2414}
1503 2415
1504unsigned int 2416unsigned int ecb_cold
1505ev_supported_backends (void) 2417ev_supported_backends (void) EV_THROW
1506{ 2418{
1507 unsigned int flags = 0; 2419 unsigned int flags = 0;
1508 2420
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514 2426
1515 return flags; 2427 return flags;
1516} 2428}
1517 2429
1518unsigned int 2430unsigned int ecb_cold
1519ev_recommended_backends (void) 2431ev_recommended_backends (void) EV_THROW
1520{ 2432{
1521 unsigned int flags = ev_supported_backends (); 2433 unsigned int flags = ev_supported_backends ();
1522 2434
1523#ifndef __NetBSD__ 2435#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2436 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 2447#endif
1536 2448
1537 return flags; 2449 return flags;
1538} 2450}
1539 2451
2452unsigned int ecb_cold
2453ev_embeddable_backends (void) EV_THROW
2454{
2455 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2456
2457 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2458 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2459 flags &= ~EVBACKEND_EPOLL;
2460
2461 return flags;
2462}
2463
1540unsigned int 2464unsigned 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) 2465ev_backend (EV_P) EV_THROW
1554{ 2466{
1555 return backend; 2467 return backend;
1556} 2468}
1557 2469
1558#if EV_FEATURE_API 2470#if EV_FEATURE_API
1559unsigned int 2471unsigned int
1560ev_iteration (EV_P) 2472ev_iteration (EV_P) EV_THROW
1561{ 2473{
1562 return loop_count; 2474 return loop_count;
1563} 2475}
1564 2476
1565unsigned int 2477unsigned int
1566ev_depth (EV_P) 2478ev_depth (EV_P) EV_THROW
1567{ 2479{
1568 return loop_depth; 2480 return loop_depth;
1569} 2481}
1570 2482
1571void 2483void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2484ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1573{ 2485{
1574 io_blocktime = interval; 2486 io_blocktime = interval;
1575} 2487}
1576 2488
1577void 2489void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2490ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1579{ 2491{
1580 timeout_blocktime = interval; 2492 timeout_blocktime = interval;
1581} 2493}
1582 2494
1583void 2495void
1584ev_set_userdata (EV_P_ void *data) 2496ev_set_userdata (EV_P_ void *data) EV_THROW
1585{ 2497{
1586 userdata = data; 2498 userdata = data;
1587} 2499}
1588 2500
1589void * 2501void *
1590ev_userdata (EV_P) 2502ev_userdata (EV_P) EV_THROW
1591{ 2503{
1592 return userdata; 2504 return userdata;
1593} 2505}
1594 2506
2507void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2508ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1596{ 2509{
1597 invoke_cb = invoke_pending_cb; 2510 invoke_cb = invoke_pending_cb;
1598} 2511}
1599 2512
2513void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2514ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1601{ 2515{
1602 release_cb = release; 2516 release_cb = release;
1603 acquire_cb = acquire; 2517 acquire_cb = acquire;
1604} 2518}
1605#endif 2519#endif
1606 2520
1607/* initialise a loop structure, must be zero-initialised */ 2521/* initialise a loop structure, must be zero-initialised */
1608static void noinline 2522static void noinline ecb_cold
1609loop_init (EV_P_ unsigned int flags) 2523loop_init (EV_P_ unsigned int flags) EV_THROW
1610{ 2524{
1611 if (!backend) 2525 if (!backend)
1612 { 2526 {
2527 origflags = flags;
2528
1613#if EV_USE_REALTIME 2529#if EV_USE_REALTIME
1614 if (!have_realtime) 2530 if (!have_realtime)
1615 { 2531 {
1616 struct timespec ts; 2532 struct timespec ts;
1617 2533
… …
1639 if (!(flags & EVFLAG_NOENV) 2555 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 2556 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 2557 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 2558 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 2559
1644 ev_rt_now = ev_time (); 2560 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 2561 mn_now = get_clock ();
1646 now_floor = mn_now; 2562 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 2563 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 2564#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 2565 invoke_cb = ev_invoke_pending;
1650#endif 2566#endif
1651 2567
1652 io_blocktime = 0.; 2568 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 2569 timeout_blocktime = 0.;
1654 backend = 0; 2570 backend = 0;
1655 backend_fd = -1; 2571 backend_fd = -1;
1656 sig_pending = 0; 2572 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 2573#if EV_ASYNC_ENABLE
1658 async_pending = 0; 2574 async_pending = 0;
1659#endif 2575#endif
2576 pipe_write_skipped = 0;
2577 pipe_write_wanted = 0;
2578 evpipe [0] = -1;
2579 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 2580#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2581 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 2582#endif
1663#if EV_USE_SIGNALFD 2583#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2584 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 2585#endif
1666 2586
1667 if (!(flags & 0x0000ffffU)) 2587 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 2588 flags |= ev_recommended_backends ();
1669 2589
2590#if EV_USE_IOCP
2591 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2592#endif
1670#if EV_USE_PORT 2593#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2594 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 2595#endif
1673#if EV_USE_KQUEUE 2596#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2597 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1691#endif 2614#endif
1692 } 2615 }
1693} 2616}
1694 2617
1695/* free up a loop structure */ 2618/* free up a loop structure */
1696static void noinline 2619void ecb_cold
1697loop_destroy (EV_P) 2620ev_loop_destroy (EV_P)
1698{ 2621{
1699 int i; 2622 int i;
2623
2624#if EV_MULTIPLICITY
2625 /* mimic free (0) */
2626 if (!EV_A)
2627 return;
2628#endif
2629
2630#if EV_CLEANUP_ENABLE
2631 /* queue cleanup watchers (and execute them) */
2632 if (expect_false (cleanupcnt))
2633 {
2634 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2635 EV_INVOKE_PENDING;
2636 }
2637#endif
2638
2639#if EV_CHILD_ENABLE
2640 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2641 {
2642 ev_ref (EV_A); /* child watcher */
2643 ev_signal_stop (EV_A_ &childev);
2644 }
2645#endif
1700 2646
1701 if (ev_is_active (&pipe_w)) 2647 if (ev_is_active (&pipe_w))
1702 { 2648 {
1703 /*ev_ref (EV_A);*/ 2649 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 2650 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 2651
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]); 2652 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 2653 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 2654 }
1717 2655
1718#if EV_USE_SIGNALFD 2656#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 2657 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 2658 close (sigfd);
… …
1726#endif 2664#endif
1727 2665
1728 if (backend_fd >= 0) 2666 if (backend_fd >= 0)
1729 close (backend_fd); 2667 close (backend_fd);
1730 2668
2669#if EV_USE_IOCP
2670 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2671#endif
1731#if EV_USE_PORT 2672#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2673 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 2674#endif
1734#if EV_USE_KQUEUE 2675#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2676 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1762 array_free (periodic, EMPTY); 2703 array_free (periodic, EMPTY);
1763#endif 2704#endif
1764#if EV_FORK_ENABLE 2705#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 2706 array_free (fork, EMPTY);
1766#endif 2707#endif
2708#if EV_CLEANUP_ENABLE
2709 array_free (cleanup, EMPTY);
2710#endif
1767 array_free (prepare, EMPTY); 2711 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 2712 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 2713#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 2714 array_free (async, EMPTY);
1771#endif 2715#endif
1772 2716
1773 backend = 0; 2717 backend = 0;
2718
2719#if EV_MULTIPLICITY
2720 if (ev_is_default_loop (EV_A))
2721#endif
2722 ev_default_loop_ptr = 0;
2723#if EV_MULTIPLICITY
2724 else
2725 ev_free (EV_A);
2726#endif
1774} 2727}
1775 2728
1776#if EV_USE_INOTIFY 2729#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 2730inline_size void infy_fork (EV_P);
1778#endif 2731#endif
… …
1791#endif 2744#endif
1792#if EV_USE_INOTIFY 2745#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 2746 infy_fork (EV_A);
1794#endif 2747#endif
1795 2748
2749#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 2750 if (ev_is_active (&pipe_w))
1797 { 2751 {
1798 /* this "locks" the handlers against writing to the pipe */ 2752 /* 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 2753
1805 ev_ref (EV_A); 2754 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 2755 ev_io_stop (EV_A_ &pipe_w);
1807 2756
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 2757 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 2758 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 2759
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 2760 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 2761 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 2762 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 2763 }
2764#endif
1825 2765
1826 postfork = 0; 2766 postfork = 0;
1827} 2767}
1828 2768
1829#if EV_MULTIPLICITY 2769#if EV_MULTIPLICITY
1830 2770
1831struct ev_loop * 2771struct ev_loop * ecb_cold
1832ev_loop_new (unsigned int flags) 2772ev_loop_new (unsigned int flags) EV_THROW
1833{ 2773{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2774 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 2775
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 2776 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 2777 loop_init (EV_A_ flags);
1838 2778
1839 if (ev_backend (EV_A)) 2779 if (ev_backend (EV_A))
1840 return EV_A; 2780 return EV_A;
1841 2781
2782 ev_free (EV_A);
1842 return 0; 2783 return 0;
1843} 2784}
1844 2785
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 */ 2786#endif /* multiplicity */
1858 2787
1859#if EV_VERIFY 2788#if EV_VERIFY
1860static void noinline 2789static void noinline ecb_cold
1861verify_watcher (EV_P_ W w) 2790verify_watcher (EV_P_ W w)
1862{ 2791{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2792 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 2793
1865 if (w->pending) 2794 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2795 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 2796}
1868 2797
1869static void noinline 2798static void noinline ecb_cold
1870verify_heap (EV_P_ ANHE *heap, int N) 2799verify_heap (EV_P_ ANHE *heap, int N)
1871{ 2800{
1872 int i; 2801 int i;
1873 2802
1874 for (i = HEAP0; i < N + HEAP0; ++i) 2803 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 2808
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2809 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 2810 }
1882} 2811}
1883 2812
1884static void noinline 2813static void noinline ecb_cold
1885array_verify (EV_P_ W *ws, int cnt) 2814array_verify (EV_P_ W *ws, int cnt)
1886{ 2815{
1887 while (cnt--) 2816 while (cnt--)
1888 { 2817 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2818 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 2820 }
1892} 2821}
1893#endif 2822#endif
1894 2823
1895#if EV_FEATURE_API 2824#if EV_FEATURE_API
1896void 2825void ecb_cold
1897ev_verify (EV_P) 2826ev_verify (EV_P) EV_THROW
1898{ 2827{
1899#if EV_VERIFY 2828#if EV_VERIFY
1900 int i; 2829 int i;
1901 WL w; 2830 WL w, w2;
1902 2831
1903 assert (activecnt >= -1); 2832 assert (activecnt >= -1);
1904 2833
1905 assert (fdchangemax >= fdchangecnt); 2834 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 2835 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2836 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 2837
1909 assert (anfdmax >= 0); 2838 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 2839 for (i = 0; i < anfdmax; ++i)
2840 {
2841 int j = 0;
2842
1911 for (w = anfds [i].head; w; w = w->next) 2843 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 2844 {
1913 verify_watcher (EV_A_ (W)w); 2845 verify_watcher (EV_A_ (W)w);
2846
2847 if (j++ & 1)
2848 {
2849 assert (("libev: io watcher list contains a loop", w != w2));
2850 w2 = w2->next;
2851 }
2852
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2853 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)); 2854 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 2855 }
2856 }
1917 2857
1918 assert (timermax >= timercnt); 2858 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 2859 verify_heap (EV_A_ timers, timercnt);
1920 2860
1921#if EV_PERIODIC_ENABLE 2861#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 2877 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 2878 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 2879#endif
1940 2880
2881#if EV_CLEANUP_ENABLE
2882 assert (cleanupmax >= cleanupcnt);
2883 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2884#endif
2885
1941#if EV_ASYNC_ENABLE 2886#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 2887 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 2888 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 2889#endif
1945 2890
… …
1962#endif 2907#endif
1963} 2908}
1964#endif 2909#endif
1965 2910
1966#if EV_MULTIPLICITY 2911#if EV_MULTIPLICITY
1967struct ev_loop * 2912struct ev_loop * ecb_cold
1968ev_default_loop_init (unsigned int flags)
1969#else 2913#else
1970int 2914int
2915#endif
1971ev_default_loop (unsigned int flags) 2916ev_default_loop (unsigned int flags) EV_THROW
1972#endif
1973{ 2917{
1974 if (!ev_default_loop_ptr) 2918 if (!ev_default_loop_ptr)
1975 { 2919 {
1976#if EV_MULTIPLICITY 2920#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 2921 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 2940
1997 return ev_default_loop_ptr; 2941 return ev_default_loop_ptr;
1998} 2942}
1999 2943
2000void 2944void
2001ev_default_destroy (void) 2945ev_loop_fork (EV_P) EV_THROW
2002{ 2946{
2003#if EV_MULTIPLICITY 2947 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} 2948}
2026 2949
2027/*****************************************************************************/ 2950/*****************************************************************************/
2028 2951
2029void 2952void
… …
2031{ 2954{
2032 EV_CB_INVOKE ((W)w, revents); 2955 EV_CB_INVOKE ((W)w, revents);
2033} 2956}
2034 2957
2035unsigned int 2958unsigned int
2036ev_pending_count (EV_P) 2959ev_pending_count (EV_P) EV_THROW
2037{ 2960{
2038 int pri; 2961 int pri;
2039 unsigned int count = 0; 2962 unsigned int count = 0;
2040 2963
2041 for (pri = NUMPRI; pri--; ) 2964 for (pri = NUMPRI; pri--; )
… …
2045} 2968}
2046 2969
2047void noinline 2970void noinline
2048ev_invoke_pending (EV_P) 2971ev_invoke_pending (EV_P)
2049{ 2972{
2050 int pri; 2973 pendingpri = NUMPRI;
2051 2974
2052 for (pri = NUMPRI; pri--; ) 2975 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2976 {
2977 --pendingpri;
2978
2053 while (pendingcnt [pri]) 2979 while (pendingcnt [pendingpri])
2054 { 2980 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2981 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 2982
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; 2983 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 2984 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
2063 } 2986 }
2987 }
2064} 2988}
2065 2989
2066#if EV_IDLE_ENABLE 2990#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 2991/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 2992/* only when higher priorities are idle" logic */
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3049 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3050 }
2127} 3051}
2128 3052
2129#if EV_PERIODIC_ENABLE 3053#if EV_PERIODIC_ENABLE
3054
3055static void noinline
3056periodic_recalc (EV_P_ ev_periodic *w)
3057{
3058 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3059 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3060
3061 /* the above almost always errs on the low side */
3062 while (at <= ev_rt_now)
3063 {
3064 ev_tstamp nat = at + w->interval;
3065
3066 /* when resolution fails us, we use ev_rt_now */
3067 if (expect_false (nat == at))
3068 {
3069 at = ev_rt_now;
3070 break;
3071 }
3072
3073 at = nat;
3074 }
3075
3076 ev_at (w) = at;
3077}
3078
2130/* make periodics pending */ 3079/* make periodics pending */
2131inline_size void 3080inline_size void
2132periodics_reify (EV_P) 3081periodics_reify (EV_P)
2133{ 3082{
2134 EV_FREQUENT_CHECK; 3083 EV_FREQUENT_CHECK;
2135 3084
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3085 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3086 {
2138 int feed_count = 0;
2139
2140 do 3087 do
2141 { 3088 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3089 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3090
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3091 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3100 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3101 downheap (periodics, periodiccnt, HEAP0);
2155 } 3102 }
2156 else if (w->interval) 3103 else if (w->interval)
2157 { 3104 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3105 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]); 3106 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3107 downheap (periodics, periodiccnt, HEAP0);
2174 } 3108 }
2175 else 3109 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3110 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3118 }
2185} 3119}
2186 3120
2187/* simply recalculate all periodics */ 3121/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3122/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3123static void noinline ecb_cold
2190periodics_reschedule (EV_P) 3124periodics_reschedule (EV_P)
2191{ 3125{
2192 int i; 3126 int i;
2193 3127
2194 /* adjust periodics after time jump */ 3128 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3132
2199 if (w->reschedule_cb) 3133 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3134 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3135 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3136 periodic_recalc (EV_A_ w);
2203 3137
2204 ANHE_at_cache (periodics [i]); 3138 ANHE_at_cache (periodics [i]);
2205 } 3139 }
2206 3140
2207 reheap (periodics, periodiccnt); 3141 reheap (periodics, periodiccnt);
2208} 3142}
2209#endif 3143#endif
2210 3144
2211/* adjust all timers by a given offset */ 3145/* adjust all timers by a given offset */
2212static void noinline 3146static void noinline ecb_cold
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3147timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3148{
2215 int i; 3149 int i;
2216 3150
2217 for (i = 0; i < timercnt; ++i) 3151 for (i = 0; i < timercnt; ++i)
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3188 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3189 * in the unlikely event of having been preempted here.
2256 */ 3190 */
2257 for (i = 4; --i; ) 3191 for (i = 4; --i; )
2258 { 3192 {
3193 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3194 rtmn_diff = ev_rt_now - mn_now;
2260 3195
3196 diff = odiff - rtmn_diff;
3197
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3198 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 3199 return; /* all is well */
2263 3200
2264 ev_rt_now = ev_time (); 3201 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3202 mn_now = get_clock ();
2266 now_floor = mn_now; 3203 now_floor = mn_now;
… …
2288 3225
2289 mn_now = ev_rt_now; 3226 mn_now = ev_rt_now;
2290 } 3227 }
2291} 3228}
2292 3229
2293void 3230int
2294ev_loop (EV_P_ int flags) 3231ev_run (EV_P_ int flags)
2295{ 3232{
2296#if EV_FEATURE_API 3233#if EV_FEATURE_API
2297 ++loop_depth; 3234 ++loop_depth;
2298#endif 3235#endif
2299 3236
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3237 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3238
2302 loop_done = EVUNLOOP_CANCEL; 3239 loop_done = EVBREAK_CANCEL;
2303 3240
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3241 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3242
2306 do 3243 do
2307 { 3244 {
… …
2350 /* calculate blocking time */ 3287 /* calculate blocking time */
2351 { 3288 {
2352 ev_tstamp waittime = 0.; 3289 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3290 ev_tstamp sleeptime = 0.;
2354 3291
3292 /* remember old timestamp for io_blocktime calculation */
3293 ev_tstamp prev_mn_now = mn_now;
3294
3295 /* update time to cancel out callback processing overhead */
3296 time_update (EV_A_ 1e100);
3297
3298 /* from now on, we want a pipe-wake-up */
3299 pipe_write_wanted = 1;
3300
3301 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3302
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3303 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3304 {
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; 3305 waittime = MAX_BLOCKTIME;
2364 3306
2365 if (timercnt) 3307 if (timercnt)
2366 { 3308 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3309 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3310 if (waittime > to) waittime = to;
2369 } 3311 }
2370 3312
2371#if EV_PERIODIC_ENABLE 3313#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3314 if (periodiccnt)
2373 { 3315 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3316 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3317 if (waittime > to) waittime = to;
2376 } 3318 }
2377#endif 3319#endif
2378 3320
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3321 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3322 if (expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3323 waittime = timeout_blocktime;
3324
3325 /* at this point, we NEED to wait, so we have to ensure */
3326 /* to pass a minimum nonzero value to the backend */
3327 if (expect_false (waittime < backend_mintime))
3328 waittime = backend_mintime;
2382 3329
2383 /* extra check because io_blocktime is commonly 0 */ 3330 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3331 if (expect_false (io_blocktime))
2385 { 3332 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3333 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3334
2388 if (sleeptime > waittime - backend_fudge) 3335 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3336 sleeptime = waittime - backend_mintime;
2390 3337
2391 if (expect_true (sleeptime > 0.)) 3338 if (expect_true (sleeptime > 0.))
2392 { 3339 {
2393 ev_sleep (sleeptime); 3340 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3341 waittime -= sleeptime;
… …
2397 } 3344 }
2398 3345
2399#if EV_FEATURE_API 3346#if EV_FEATURE_API
2400 ++loop_count; 3347 ++loop_count;
2401#endif 3348#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3349 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3350 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3351 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3352
3353 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3354
3355 ECB_MEMORY_FENCE_ACQUIRE;
3356 if (pipe_write_skipped)
3357 {
3358 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3359 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3360 }
3361
2405 3362
2406 /* update ev_rt_now, do magic */ 3363 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3364 time_update (EV_A_ waittime + sleeptime);
2408 } 3365 }
2409 3366
… …
2427 EV_INVOKE_PENDING; 3384 EV_INVOKE_PENDING;
2428 } 3385 }
2429 while (expect_true ( 3386 while (expect_true (
2430 activecnt 3387 activecnt
2431 && !loop_done 3388 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3389 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3390 ));
2434 3391
2435 if (loop_done == EVUNLOOP_ONE) 3392 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3393 loop_done = EVBREAK_CANCEL;
2437 3394
2438#if EV_FEATURE_API 3395#if EV_FEATURE_API
2439 --loop_depth; 3396 --loop_depth;
2440#endif 3397#endif
3398
3399 return activecnt;
2441} 3400}
2442 3401
2443void 3402void
2444ev_unloop (EV_P_ int how) 3403ev_break (EV_P_ int how) EV_THROW
2445{ 3404{
2446 loop_done = how; 3405 loop_done = how;
2447} 3406}
2448 3407
2449void 3408void
2450ev_ref (EV_P) 3409ev_ref (EV_P) EV_THROW
2451{ 3410{
2452 ++activecnt; 3411 ++activecnt;
2453} 3412}
2454 3413
2455void 3414void
2456ev_unref (EV_P) 3415ev_unref (EV_P) EV_THROW
2457{ 3416{
2458 --activecnt; 3417 --activecnt;
2459} 3418}
2460 3419
2461void 3420void
2462ev_now_update (EV_P) 3421ev_now_update (EV_P) EV_THROW
2463{ 3422{
2464 time_update (EV_A_ 1e100); 3423 time_update (EV_A_ 1e100);
2465} 3424}
2466 3425
2467void 3426void
2468ev_suspend (EV_P) 3427ev_suspend (EV_P) EV_THROW
2469{ 3428{
2470 ev_now_update (EV_A); 3429 ev_now_update (EV_A);
2471} 3430}
2472 3431
2473void 3432void
2474ev_resume (EV_P) 3433ev_resume (EV_P) EV_THROW
2475{ 3434{
2476 ev_tstamp mn_prev = mn_now; 3435 ev_tstamp mn_prev = mn_now;
2477 3436
2478 ev_now_update (EV_A); 3437 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3438 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2518 w->pending = 0; 3477 w->pending = 0;
2519 } 3478 }
2520} 3479}
2521 3480
2522int 3481int
2523ev_clear_pending (EV_P_ void *w) 3482ev_clear_pending (EV_P_ void *w) EV_THROW
2524{ 3483{
2525 W w_ = (W)w; 3484 W w_ = (W)w;
2526 int pending = w_->pending; 3485 int pending = w_->pending;
2527 3486
2528 if (expect_true (pending)) 3487 if (expect_true (pending))
… …
2561} 3520}
2562 3521
2563/*****************************************************************************/ 3522/*****************************************************************************/
2564 3523
2565void noinline 3524void noinline
2566ev_io_start (EV_P_ ev_io *w) 3525ev_io_start (EV_P_ ev_io *w) EV_THROW
2567{ 3526{
2568 int fd = w->fd; 3527 int fd = w->fd;
2569 3528
2570 if (expect_false (ev_is_active (w))) 3529 if (expect_false (ev_is_active (w)))
2571 return; 3530 return;
… …
2577 3536
2578 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3538 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2580 wlist_add (&anfds[fd].head, (WL)w); 3539 wlist_add (&anfds[fd].head, (WL)w);
2581 3540
3541 /* common bug, apparently */
3542 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3543
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3544 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 3545 w->events &= ~EV__IOFDSET;
2584 3546
2585 EV_FREQUENT_CHECK; 3547 EV_FREQUENT_CHECK;
2586} 3548}
2587 3549
2588void noinline 3550void noinline
2589ev_io_stop (EV_P_ ev_io *w) 3551ev_io_stop (EV_P_ ev_io *w) EV_THROW
2590{ 3552{
2591 clear_pending (EV_A_ (W)w); 3553 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 3554 if (expect_false (!ev_is_active (w)))
2593 return; 3555 return;
2594 3556
… …
2597 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2598 3560
2599 wlist_del (&anfds[w->fd].head, (WL)w); 3561 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
2601 3563
2602 fd_change (EV_A_ w->fd, 1); 3564 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 3565
2604 EV_FREQUENT_CHECK; 3566 EV_FREQUENT_CHECK;
2605} 3567}
2606 3568
2607void noinline 3569void noinline
2608ev_timer_start (EV_P_ ev_timer *w) 3570ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2609{ 3571{
2610 if (expect_false (ev_is_active (w))) 3572 if (expect_false (ev_is_active (w)))
2611 return; 3573 return;
2612 3574
2613 ev_at (w) += mn_now; 3575 ev_at (w) += mn_now;
… …
2627 3589
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3590 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 3591}
2630 3592
2631void noinline 3593void noinline
2632ev_timer_stop (EV_P_ ev_timer *w) 3594ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2633{ 3595{
2634 clear_pending (EV_A_ (W)w); 3596 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 3597 if (expect_false (!ev_is_active (w)))
2636 return; 3598 return;
2637 3599
… …
2657 3619
2658 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
2659} 3621}
2660 3622
2661void noinline 3623void noinline
2662ev_timer_again (EV_P_ ev_timer *w) 3624ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2663{ 3625{
2664 EV_FREQUENT_CHECK; 3626 EV_FREQUENT_CHECK;
3627
3628 clear_pending (EV_A_ (W)w);
2665 3629
2666 if (ev_is_active (w)) 3630 if (ev_is_active (w))
2667 { 3631 {
2668 if (w->repeat) 3632 if (w->repeat)
2669 { 3633 {
… …
2682 3646
2683 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2684} 3648}
2685 3649
2686ev_tstamp 3650ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 3651ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2688{ 3652{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3653 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 3654}
2691 3655
2692#if EV_PERIODIC_ENABLE 3656#if EV_PERIODIC_ENABLE
2693void noinline 3657void noinline
2694ev_periodic_start (EV_P_ ev_periodic *w) 3658ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2695{ 3659{
2696 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2697 return; 3661 return;
2698 3662
2699 if (w->reschedule_cb) 3663 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3664 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 3665 else if (w->interval)
2702 { 3666 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3667 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 */ 3668 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 3669 }
2707 else 3670 else
2708 ev_at (w) = w->offset; 3671 ev_at (w) = w->offset;
2709 3672
2710 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
… …
2720 3683
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3684 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 3685}
2723 3686
2724void noinline 3687void noinline
2725ev_periodic_stop (EV_P_ ev_periodic *w) 3688ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2726{ 3689{
2727 clear_pending (EV_A_ (W)w); 3690 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 3691 if (expect_false (!ev_is_active (w)))
2729 return; 3692 return;
2730 3693
… …
2748 3711
2749 EV_FREQUENT_CHECK; 3712 EV_FREQUENT_CHECK;
2750} 3713}
2751 3714
2752void noinline 3715void noinline
2753ev_periodic_again (EV_P_ ev_periodic *w) 3716ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2754{ 3717{
2755 /* TODO: use adjustheap and recalculation */ 3718 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 3719 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 3720 ev_periodic_start (EV_A_ w);
2758} 3721}
… …
2763#endif 3726#endif
2764 3727
2765#if EV_SIGNAL_ENABLE 3728#if EV_SIGNAL_ENABLE
2766 3729
2767void noinline 3730void noinline
2768ev_signal_start (EV_P_ ev_signal *w) 3731ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2769{ 3732{
2770 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2771 return; 3734 return;
2772 3735
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3736 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2775#if EV_MULTIPLICITY 3738#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 3739 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 3741
2779 signals [w->signum - 1].loop = EV_A; 3742 signals [w->signum - 1].loop = EV_A;
3743 ECB_MEMORY_FENCE_RELEASE;
2780#endif 3744#endif
2781 3745
2782 EV_FREQUENT_CHECK; 3746 EV_FREQUENT_CHECK;
2783 3747
2784#if EV_USE_SIGNALFD 3748#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 3795 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 3796 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3797 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 3798 sigaction (w->signum, &sa, 0);
2835 3799
3800 if (origflags & EVFLAG_NOSIGMASK)
3801 {
2836 sigemptyset (&sa.sa_mask); 3802 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 3803 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3804 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3805 }
2839#endif 3806#endif
2840 } 3807 }
2841 3808
2842 EV_FREQUENT_CHECK; 3809 EV_FREQUENT_CHECK;
2843} 3810}
2844 3811
2845void noinline 3812void noinline
2846ev_signal_stop (EV_P_ ev_signal *w) 3813ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2847{ 3814{
2848 clear_pending (EV_A_ (W)w); 3815 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 3816 if (expect_false (!ev_is_active (w)))
2850 return; 3817 return;
2851 3818
… …
2882#endif 3849#endif
2883 3850
2884#if EV_CHILD_ENABLE 3851#if EV_CHILD_ENABLE
2885 3852
2886void 3853void
2887ev_child_start (EV_P_ ev_child *w) 3854ev_child_start (EV_P_ ev_child *w) EV_THROW
2888{ 3855{
2889#if EV_MULTIPLICITY 3856#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3857 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 3858#endif
2892 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
… …
2899 3866
2900 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2901} 3868}
2902 3869
2903void 3870void
2904ev_child_stop (EV_P_ ev_child *w) 3871ev_child_stop (EV_P_ ev_child *w) EV_THROW
2905{ 3872{
2906 clear_pending (EV_A_ (W)w); 3873 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3874 if (expect_false (!ev_is_active (w)))
2908 return; 3875 return;
2909 3876
… …
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3903# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 3904
2938static void noinline 3905static void noinline
2939infy_add (EV_P_ ev_stat *w) 3906infy_add (EV_P_ ev_stat *w)
2940{ 3907{
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); 3908 w->wd = inotify_add_watch (fs_fd, w->path,
3909 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3910 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3911 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 3912
2943 if (w->wd >= 0) 3913 if (w->wd >= 0)
2944 { 3914 {
2945 struct statfs sfs; 3915 struct statfs sfs;
2946 3916
… …
2950 3920
2951 if (!fs_2625) 3921 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3922 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 3923 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 3924 && (sfs.f_type == 0x1373 /* devfs */
3925 || sfs.f_type == 0x4006 /* fat */
3926 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 3927 || sfs.f_type == 0xEF53 /* ext2/3 */
3928 || sfs.f_type == 0x72b6 /* jffs2 */
3929 || sfs.f_type == 0x858458f6 /* ramfs */
3930 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 3931 || sfs.f_type == 0x3153464a /* jfs */
3932 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 3933 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 3934 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 3935 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 3937 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 3939 }
… …
2984 if (!pend || pend == path) 3960 if (!pend || pend == path)
2985 break; 3961 break;
2986 3962
2987 *pend = 0; 3963 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 3964 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 3965 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 3967 }
2992 } 3968 }
2993 3969
2994 if (w->wd >= 0) 3970 if (w->wd >= 0)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4037 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4038 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4039 }
3064} 4040}
3065 4041
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 4042inline_size void ecb_cold
3099ev_check_2625 (EV_P) 4043ev_check_2625 (EV_P)
3100{ 4044{
3101 /* kernels < 2.6.25 are borked 4045 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4047 */
… …
3108} 4052}
3109 4053
3110inline_size int 4054inline_size int
3111infy_newfd (void) 4055infy_newfd (void)
3112{ 4056{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4057#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4059 if (fd >= 0)
3116 return fd; 4060 return fd;
3117#endif 4061#endif
3118 return inotify_init (); 4062 return inotify_init ();
… …
3193#else 4137#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4138# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4139#endif
3196 4140
3197void 4141void
3198ev_stat_stat (EV_P_ ev_stat *w) 4142ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3199{ 4143{
3200 if (lstat (w->path, &w->attr) < 0) 4144 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4145 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4146 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4147 w->attr.st_nlink = 1;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4186 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4187 }
3244} 4188}
3245 4189
3246void 4190void
3247ev_stat_start (EV_P_ ev_stat *w) 4191ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3248{ 4192{
3249 if (expect_false (ev_is_active (w))) 4193 if (expect_false (ev_is_active (w)))
3250 return; 4194 return;
3251 4195
3252 ev_stat_stat (EV_A_ w); 4196 ev_stat_stat (EV_A_ w);
… …
3273 4217
3274 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3275} 4219}
3276 4220
3277void 4221void
3278ev_stat_stop (EV_P_ ev_stat *w) 4222ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3279{ 4223{
3280 clear_pending (EV_A_ (W)w); 4224 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4225 if (expect_false (!ev_is_active (w)))
3282 return; 4226 return;
3283 4227
… …
3299} 4243}
3300#endif 4244#endif
3301 4245
3302#if EV_IDLE_ENABLE 4246#if EV_IDLE_ENABLE
3303void 4247void
3304ev_idle_start (EV_P_ ev_idle *w) 4248ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3305{ 4249{
3306 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3307 return; 4251 return;
3308 4252
3309 pri_adjust (EV_A_ (W)w); 4253 pri_adjust (EV_A_ (W)w);
… …
3322 4266
3323 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3324} 4268}
3325 4269
3326void 4270void
3327ev_idle_stop (EV_P_ ev_idle *w) 4271ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3328{ 4272{
3329 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3331 return; 4275 return;
3332 4276
… …
3346} 4290}
3347#endif 4291#endif
3348 4292
3349#if EV_PREPARE_ENABLE 4293#if EV_PREPARE_ENABLE
3350void 4294void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4295ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3352{ 4296{
3353 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3354 return; 4298 return;
3355 4299
3356 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
… …
3361 4305
3362 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3363} 4307}
3364 4308
3365void 4309void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4310ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3367{ 4311{
3368 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3370 return; 4314 return;
3371 4315
… …
3384} 4328}
3385#endif 4329#endif
3386 4330
3387#if EV_CHECK_ENABLE 4331#if EV_CHECK_ENABLE
3388void 4332void
3389ev_check_start (EV_P_ ev_check *w) 4333ev_check_start (EV_P_ ev_check *w) EV_THROW
3390{ 4334{
3391 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3392 return; 4336 return;
3393 4337
3394 EV_FREQUENT_CHECK; 4338 EV_FREQUENT_CHECK;
… …
3399 4343
3400 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3401} 4345}
3402 4346
3403void 4347void
3404ev_check_stop (EV_P_ ev_check *w) 4348ev_check_stop (EV_P_ ev_check *w) EV_THROW
3405{ 4349{
3406 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3408 return; 4352 return;
3409 4353
… …
3422} 4366}
3423#endif 4367#endif
3424 4368
3425#if EV_EMBED_ENABLE 4369#if EV_EMBED_ENABLE
3426void noinline 4370void noinline
3427ev_embed_sweep (EV_P_ ev_embed *w) 4371ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3428{ 4372{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4373 ev_run (w->other, EVRUN_NOWAIT);
3430} 4374}
3431 4375
3432static void 4376static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4377embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4378{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4379 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4380
3437 if (ev_cb (w)) 4381 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4382 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4383 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4384 ev_run (w->other, EVRUN_NOWAIT);
3441} 4385}
3442 4386
3443static void 4387static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4388embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4389{
… …
3449 EV_P = w->other; 4393 EV_P = w->other;
3450 4394
3451 while (fdchangecnt) 4395 while (fdchangecnt)
3452 { 4396 {
3453 fd_reify (EV_A); 4397 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4398 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4399 }
3456 } 4400 }
3457} 4401}
3458 4402
3459static void 4403static void
… …
3465 4409
3466 { 4410 {
3467 EV_P = w->other; 4411 EV_P = w->other;
3468 4412
3469 ev_loop_fork (EV_A); 4413 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4414 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4415 }
3472 4416
3473 ev_embed_start (EV_A_ w); 4417 ev_embed_start (EV_A_ w);
3474} 4418}
3475 4419
… …
3480 ev_idle_stop (EV_A_ idle); 4424 ev_idle_stop (EV_A_ idle);
3481} 4425}
3482#endif 4426#endif
3483 4427
3484void 4428void
3485ev_embed_start (EV_P_ ev_embed *w) 4429ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3486{ 4430{
3487 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3488 return; 4432 return;
3489 4433
3490 { 4434 {
… …
3511 4455
3512 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3513} 4457}
3514 4458
3515void 4459void
3516ev_embed_stop (EV_P_ ev_embed *w) 4460ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3517{ 4461{
3518 clear_pending (EV_A_ (W)w); 4462 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 4463 if (expect_false (!ev_is_active (w)))
3520 return; 4464 return;
3521 4465
… …
3531} 4475}
3532#endif 4476#endif
3533 4477
3534#if EV_FORK_ENABLE 4478#if EV_FORK_ENABLE
3535void 4479void
3536ev_fork_start (EV_P_ ev_fork *w) 4480ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3537{ 4481{
3538 if (expect_false (ev_is_active (w))) 4482 if (expect_false (ev_is_active (w)))
3539 return; 4483 return;
3540 4484
3541 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
… …
3546 4490
3547 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3548} 4492}
3549 4493
3550void 4494void
3551ev_fork_stop (EV_P_ ev_fork *w) 4495ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3552{ 4496{
3553 clear_pending (EV_A_ (W)w); 4497 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 4498 if (expect_false (!ev_is_active (w)))
3555 return; 4499 return;
3556 4500
… …
3567 4511
3568 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
3569} 4513}
3570#endif 4514#endif
3571 4515
4516#if EV_CLEANUP_ENABLE
4517void
4518ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4519{
4520 if (expect_false (ev_is_active (w)))
4521 return;
4522
4523 EV_FREQUENT_CHECK;
4524
4525 ev_start (EV_A_ (W)w, ++cleanupcnt);
4526 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4527 cleanups [cleanupcnt - 1] = w;
4528
4529 /* cleanup watchers should never keep a refcount on the loop */
4530 ev_unref (EV_A);
4531 EV_FREQUENT_CHECK;
4532}
4533
4534void
4535ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4536{
4537 clear_pending (EV_A_ (W)w);
4538 if (expect_false (!ev_is_active (w)))
4539 return;
4540
4541 EV_FREQUENT_CHECK;
4542 ev_ref (EV_A);
4543
4544 {
4545 int active = ev_active (w);
4546
4547 cleanups [active - 1] = cleanups [--cleanupcnt];
4548 ev_active (cleanups [active - 1]) = active;
4549 }
4550
4551 ev_stop (EV_A_ (W)w);
4552
4553 EV_FREQUENT_CHECK;
4554}
4555#endif
4556
3572#if EV_ASYNC_ENABLE 4557#if EV_ASYNC_ENABLE
3573void 4558void
3574ev_async_start (EV_P_ ev_async *w) 4559ev_async_start (EV_P_ ev_async *w) EV_THROW
3575{ 4560{
3576 if (expect_false (ev_is_active (w))) 4561 if (expect_false (ev_is_active (w)))
3577 return; 4562 return;
4563
4564 w->sent = 0;
3578 4565
3579 evpipe_init (EV_A); 4566 evpipe_init (EV_A);
3580 4567
3581 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3582 4569
… …
3586 4573
3587 EV_FREQUENT_CHECK; 4574 EV_FREQUENT_CHECK;
3588} 4575}
3589 4576
3590void 4577void
3591ev_async_stop (EV_P_ ev_async *w) 4578ev_async_stop (EV_P_ ev_async *w) EV_THROW
3592{ 4579{
3593 clear_pending (EV_A_ (W)w); 4580 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 4581 if (expect_false (!ev_is_active (w)))
3595 return; 4582 return;
3596 4583
… …
3607 4594
3608 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3609} 4596}
3610 4597
3611void 4598void
3612ev_async_send (EV_P_ ev_async *w) 4599ev_async_send (EV_P_ ev_async *w) EV_THROW
3613{ 4600{
3614 w->sent = 1; 4601 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 4602 evpipe_write (EV_A_ &async_pending);
3616} 4603}
3617#endif 4604#endif
… …
3654 4641
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4642 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 4643}
3657 4644
3658void 4645void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4646ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3660{ 4647{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4648 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662 4649
3663 if (expect_false (!once)) 4650 if (expect_false (!once))
3664 { 4651 {
… …
3685} 4672}
3686 4673
3687/*****************************************************************************/ 4674/*****************************************************************************/
3688 4675
3689#if EV_WALK_ENABLE 4676#if EV_WALK_ENABLE
3690void 4677void ecb_cold
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4678ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3692{ 4679{
3693 int i, j; 4680 int i, j;
3694 ev_watcher_list *wl, *wn; 4681 ev_watcher_list *wl, *wn;
3695 4682
3696 if (types & (EV_IO | EV_EMBED)) 4683 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4726 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 4727#endif
3741 4728
3742#if EV_IDLE_ENABLE 4729#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 4730 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 4731 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 4732 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 4733 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 4734#endif
3748 4735
3749#if EV_FORK_ENABLE 4736#if EV_FORK_ENABLE
… …
3802 4789
3803#if EV_MULTIPLICITY 4790#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 4791 #include "ev_wrap.h"
3805#endif 4792#endif
3806 4793
3807#ifdef __cplusplus
3808}
3809#endif
3810

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