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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.455 by root, Sun Apr 28 12:45:20 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 462#endif
451#endif
452
453 463
454/**/ 464/**/
455 465
456#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 468#else
459# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
460#endif 470#endif
461 471
462/* 472/*
463 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 475 */
470#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 */
471 478
472#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) */
473#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) */
474 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } 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)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 529 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
477# 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
478#else 545#else
479# define expect(expr,value) (expr) 546 #include <inttypes.h>
480# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
482# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
483# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
484#endif 560 #endif
561#endif
485 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
633 #elif defined __alpha__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
635 #elif defined __hppa__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif defined __ia64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
640 #endif
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(4,7)
646 /* see comment below (stdatomic.h) about the C11 memory model. */
647 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
648
649 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
650 * without risking compile time errors with other compilers. We *could*
651 * define our own ecb_clang_has_feature, but I just can't be bothered to work
652 * around this shit time and again.
653 * #elif defined __clang && __has_feature (cxx_atomic)
654 * // see comment below (stdatomic.h) about the C11 memory model.
655 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
656 */
657
658 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
659 #define ECB_MEMORY_FENCE __sync_synchronize ()
660 #elif _MSC_VER >= 1400 /* VC++ 2005 */
661 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
662 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
663 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
664 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
665 #elif defined _WIN32
666 #include <WinNT.h>
667 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
668 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
669 #include <mbarrier.h>
670 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
672 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
673 #elif __xlC__
674 #define ECB_MEMORY_FENCE __sync ()
675 #endif
676#endif
677
678#ifndef ECB_MEMORY_FENCE
679 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
680 /* we assume that these memory fences work on all variables/all memory accesses, */
681 /* not just C11 atomics and atomic accesses */
682 #include <stdatomic.h>
683 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
684 /* any fence other than seq_cst, which isn't very efficient for us. */
685 /* Why that is, we don't know - either the C11 memory model is quite useless */
686 /* for most usages, or gcc and clang have a bug */
687 /* I *currently* lean towards the latter, and inefficiently implement */
688 /* all three of ecb's fences as a seq_cst fence */
689 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
690 #endif
691#endif
692
693#ifndef ECB_MEMORY_FENCE
694 #if !ECB_AVOID_PTHREADS
695 /*
696 * if you get undefined symbol references to pthread_mutex_lock,
697 * or failure to find pthread.h, then you should implement
698 * the ECB_MEMORY_FENCE operations for your cpu/compiler
699 * OR provide pthread.h and link against the posix thread library
700 * of your system.
701 */
702 #include <pthread.h>
703 #define ECB_NEEDS_PTHREADS 1
704 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
705
706 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
707 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
708 #endif
709#endif
710
711#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
712 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
713#endif
714
715#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
716 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
717#endif
718
719/*****************************************************************************/
720
721#if __cplusplus
722 #define ecb_inline static inline
723#elif ECB_GCC_VERSION(2,5)
724 #define ecb_inline static __inline__
725#elif ECB_C99
726 #define ecb_inline static inline
727#else
728 #define ecb_inline static
729#endif
730
731#if ECB_GCC_VERSION(3,3)
732 #define ecb_restrict __restrict__
733#elif ECB_C99
734 #define ecb_restrict restrict
735#else
736 #define ecb_restrict
737#endif
738
739typedef int ecb_bool;
740
741#define ECB_CONCAT_(a, b) a ## b
742#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
743#define ECB_STRINGIFY_(a) # a
744#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
745
746#define ecb_function_ ecb_inline
747
748#if ECB_GCC_VERSION(3,1)
749 #define ecb_attribute(attrlist) __attribute__(attrlist)
750 #define ecb_is_constant(expr) __builtin_constant_p (expr)
751 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
752 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
753#else
754 #define ecb_attribute(attrlist)
755 #define ecb_is_constant(expr) 0
756 #define ecb_expect(expr,value) (expr)
757 #define ecb_prefetch(addr,rw,locality)
758#endif
759
760/* no emulation for ecb_decltype */
761#if ECB_GCC_VERSION(4,5)
762 #define ecb_decltype(x) __decltype(x)
763#elif ECB_GCC_VERSION(3,0)
764 #define ecb_decltype(x) __typeof(x)
765#endif
766
767#define ecb_noinline ecb_attribute ((__noinline__))
768#define ecb_unused ecb_attribute ((__unused__))
769#define ecb_const ecb_attribute ((__const__))
770#define ecb_pure ecb_attribute ((__pure__))
771
772#if ECB_C11
773 #define ecb_noreturn _Noreturn
774#else
775 #define ecb_noreturn ecb_attribute ((__noreturn__))
776#endif
777
778#if ECB_GCC_VERSION(4,3)
779 #define ecb_artificial ecb_attribute ((__artificial__))
780 #define ecb_hot ecb_attribute ((__hot__))
781 #define ecb_cold ecb_attribute ((__cold__))
782#else
783 #define ecb_artificial
784 #define ecb_hot
785 #define ecb_cold
786#endif
787
788/* put around conditional expressions if you are very sure that the */
789/* expression is mostly true or mostly false. note that these return */
790/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 791#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 792#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
793/* for compatibility to the rest of the world */
794#define ecb_likely(expr) ecb_expect_true (expr)
795#define ecb_unlikely(expr) ecb_expect_false (expr)
796
797/* count trailing zero bits and count # of one bits */
798#if ECB_GCC_VERSION(3,4)
799 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
800 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
801 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
802 #define ecb_ctz32(x) __builtin_ctz (x)
803 #define ecb_ctz64(x) __builtin_ctzll (x)
804 #define ecb_popcount32(x) __builtin_popcount (x)
805 /* no popcountll */
806#else
807 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
808 ecb_function_ int
809 ecb_ctz32 (uint32_t x)
810 {
811 int r = 0;
812
813 x &= ~x + 1; /* this isolates the lowest bit */
814
815#if ECB_branchless_on_i386
816 r += !!(x & 0xaaaaaaaa) << 0;
817 r += !!(x & 0xcccccccc) << 1;
818 r += !!(x & 0xf0f0f0f0) << 2;
819 r += !!(x & 0xff00ff00) << 3;
820 r += !!(x & 0xffff0000) << 4;
821#else
822 if (x & 0xaaaaaaaa) r += 1;
823 if (x & 0xcccccccc) r += 2;
824 if (x & 0xf0f0f0f0) r += 4;
825 if (x & 0xff00ff00) r += 8;
826 if (x & 0xffff0000) r += 16;
827#endif
828
829 return r;
830 }
831
832 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
833 ecb_function_ int
834 ecb_ctz64 (uint64_t x)
835 {
836 int shift = x & 0xffffffffU ? 0 : 32;
837 return ecb_ctz32 (x >> shift) + shift;
838 }
839
840 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
841 ecb_function_ int
842 ecb_popcount32 (uint32_t x)
843 {
844 x -= (x >> 1) & 0x55555555;
845 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
846 x = ((x >> 4) + x) & 0x0f0f0f0f;
847 x *= 0x01010101;
848
849 return x >> 24;
850 }
851
852 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
853 ecb_function_ int ecb_ld32 (uint32_t x)
854 {
855 int r = 0;
856
857 if (x >> 16) { x >>= 16; r += 16; }
858 if (x >> 8) { x >>= 8; r += 8; }
859 if (x >> 4) { x >>= 4; r += 4; }
860 if (x >> 2) { x >>= 2; r += 2; }
861 if (x >> 1) { r += 1; }
862
863 return r;
864 }
865
866 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
867 ecb_function_ int ecb_ld64 (uint64_t x)
868 {
869 int r = 0;
870
871 if (x >> 32) { x >>= 32; r += 32; }
872
873 return r + ecb_ld32 (x);
874 }
875#endif
876
877ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
878ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
879ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
881
882ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
883ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
884{
885 return ( (x * 0x0802U & 0x22110U)
886 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
887}
888
889ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
890ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
891{
892 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
893 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
894 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
895 x = ( x >> 8 ) | ( x << 8);
896
897 return x;
898}
899
900ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
901ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
902{
903 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
904 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
905 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
906 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
907 x = ( x >> 16 ) | ( x << 16);
908
909 return x;
910}
911
912/* popcount64 is only available on 64 bit cpus as gcc builtin */
913/* so for this version we are lazy */
914ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
915ecb_function_ int
916ecb_popcount64 (uint64_t x)
917{
918 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
919}
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
929
930ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
931ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
932ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
933ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
934ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
935ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
936ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
937ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
938
939#if ECB_GCC_VERSION(4,3)
940 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
941 #define ecb_bswap32(x) __builtin_bswap32 (x)
942 #define ecb_bswap64(x) __builtin_bswap64 (x)
943#else
944 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
945 ecb_function_ uint16_t
946 ecb_bswap16 (uint16_t x)
947 {
948 return ecb_rotl16 (x, 8);
949 }
950
951 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
952 ecb_function_ uint32_t
953 ecb_bswap32 (uint32_t x)
954 {
955 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
956 }
957
958 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
959 ecb_function_ uint64_t
960 ecb_bswap64 (uint64_t x)
961 {
962 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
963 }
964#endif
965
966#if ECB_GCC_VERSION(4,5)
967 #define ecb_unreachable() __builtin_unreachable ()
968#else
969 /* this seems to work fine, but gcc always emits a warning for it :/ */
970 ecb_inline void ecb_unreachable (void) ecb_noreturn;
971 ecb_inline void ecb_unreachable (void) { }
972#endif
973
974/* try to tell the compiler that some condition is definitely true */
975#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
976
977ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
978ecb_inline unsigned char
979ecb_byteorder_helper (void)
980{
981 /* the union code still generates code under pressure in gcc, */
982 /* but less than using pointers, and always seems to */
983 /* successfully return a constant. */
984 /* the reason why we have this horrible preprocessor mess */
985 /* is to avoid it in all cases, at least on common architectures */
986 /* or when using a recent enough gcc version (>= 4.6) */
987#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
988 return 0x44;
989#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
992 return 0x11;
993#else
994 union
995 {
996 uint32_t i;
997 uint8_t c;
998 } u = { 0x11223344 };
999 return u.c;
1000#endif
1001}
1002
1003ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1004ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1005ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1007
1008#if ECB_GCC_VERSION(3,0) || ECB_C99
1009 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1010#else
1011 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1012#endif
1013
1014#if __cplusplus
1015 template<typename T>
1016 static inline T ecb_div_rd (T val, T div)
1017 {
1018 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1019 }
1020 template<typename T>
1021 static inline T ecb_div_ru (T val, T div)
1022 {
1023 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1024 }
1025#else
1026 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1027 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1028#endif
1029
1030#if ecb_cplusplus_does_not_suck
1031 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1032 template<typename T, int N>
1033 static inline int ecb_array_length (const T (&arr)[N])
1034 {
1035 return N;
1036 }
1037#else
1038 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1039#endif
1040
1041/*******************************************************************************/
1042/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1043
1044/* basically, everything uses "ieee pure-endian" floating point numbers */
1045/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1046#if 0 \
1047 || __i386 || __i386__ \
1048 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1049 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1050 || defined __arm__ && defined __ARM_EABI__ \
1051 || defined __s390__ || defined __s390x__ \
1052 || defined __mips__ \
1053 || defined __alpha__ \
1054 || defined __hppa__ \
1055 || defined __ia64__ \
1056 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1057 #define ECB_STDFP 1
1058 #include <string.h> /* for memcpy */
1059#else
1060 #define ECB_STDFP 0
1061 #include <math.h> /* for frexp*, ldexp* */
1062#endif
1063
1064#ifndef ECB_NO_LIBM
1065
1066 /* convert a float to ieee single/binary32 */
1067 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1068 ecb_function_ uint32_t
1069 ecb_float_to_binary32 (float x)
1070 {
1071 uint32_t r;
1072
1073 #if ECB_STDFP
1074 memcpy (&r, &x, 4);
1075 #else
1076 /* slow emulation, works for anything but -0 */
1077 uint32_t m;
1078 int e;
1079
1080 if (x == 0e0f ) return 0x00000000U;
1081 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1082 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1083 if (x != x ) return 0x7fbfffffU;
1084
1085 m = frexpf (x, &e) * 0x1000000U;
1086
1087 r = m & 0x80000000U;
1088
1089 if (r)
1090 m = -m;
1091
1092 if (e <= -126)
1093 {
1094 m &= 0xffffffU;
1095 m >>= (-125 - e);
1096 e = -126;
1097 }
1098
1099 r |= (e + 126) << 23;
1100 r |= m & 0x7fffffU;
1101 #endif
1102
1103 return r;
1104 }
1105
1106 /* converts an ieee single/binary32 to a float */
1107 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1108 ecb_function_ float
1109 ecb_binary32_to_float (uint32_t x)
1110 {
1111 float r;
1112
1113 #if ECB_STDFP
1114 memcpy (&r, &x, 4);
1115 #else
1116 /* emulation, only works for normals and subnormals and +0 */
1117 int neg = x >> 31;
1118 int e = (x >> 23) & 0xffU;
1119
1120 x &= 0x7fffffU;
1121
1122 if (e)
1123 x |= 0x800000U;
1124 else
1125 e = 1;
1126
1127 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1128 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1129
1130 r = neg ? -r : r;
1131 #endif
1132
1133 return r;
1134 }
1135
1136 /* convert a double to ieee double/binary64 */
1137 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1138 ecb_function_ uint64_t
1139 ecb_double_to_binary64 (double x)
1140 {
1141 uint64_t r;
1142
1143 #if ECB_STDFP
1144 memcpy (&r, &x, 8);
1145 #else
1146 /* slow emulation, works for anything but -0 */
1147 uint64_t m;
1148 int e;
1149
1150 if (x == 0e0 ) return 0x0000000000000000U;
1151 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1152 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1153 if (x != x ) return 0X7ff7ffffffffffffU;
1154
1155 m = frexp (x, &e) * 0x20000000000000U;
1156
1157 r = m & 0x8000000000000000;;
1158
1159 if (r)
1160 m = -m;
1161
1162 if (e <= -1022)
1163 {
1164 m &= 0x1fffffffffffffU;
1165 m >>= (-1021 - e);
1166 e = -1022;
1167 }
1168
1169 r |= ((uint64_t)(e + 1022)) << 52;
1170 r |= m & 0xfffffffffffffU;
1171 #endif
1172
1173 return r;
1174 }
1175
1176 /* converts an ieee double/binary64 to a double */
1177 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1178 ecb_function_ double
1179 ecb_binary64_to_double (uint64_t x)
1180 {
1181 double r;
1182
1183 #if ECB_STDFP
1184 memcpy (&r, &x, 8);
1185 #else
1186 /* emulation, only works for normals and subnormals and +0 */
1187 int neg = x >> 63;
1188 int e = (x >> 52) & 0x7ffU;
1189
1190 x &= 0xfffffffffffffU;
1191
1192 if (e)
1193 x |= 0x10000000000000U;
1194 else
1195 e = 1;
1196
1197 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1198 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1199
1200 r = neg ? -r : r;
1201 #endif
1202
1203 return r;
1204 }
1205
1206#endif
1207
1208#endif
1209
1210/* ECB.H END */
1211
1212#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1213/* if your architecture doesn't need memory fences, e.g. because it is
1214 * single-cpu/core, or if you use libev in a project that doesn't use libev
1215 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1216 * libev, in which cases the memory fences become nops.
1217 * alternatively, you can remove this #error and link against libpthread,
1218 * which will then provide the memory fences.
1219 */
1220# error "memory fences not defined for your architecture, please report"
1221#endif
1222
1223#ifndef ECB_MEMORY_FENCE
1224# define ECB_MEMORY_FENCE do { } while (0)
1225# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1227#endif
1228
1229#define expect_false(cond) ecb_expect_false (cond)
1230#define expect_true(cond) ecb_expect_true (cond)
1231#define noinline ecb_noinline
1232
488#define inline_size static inline 1233#define inline_size ecb_inline
489 1234
490#if EV_FEATURE_CODE 1235#if EV_FEATURE_CODE
491# define inline_speed static inline 1236# define inline_speed ecb_inline
492#else 1237#else
493# define inline_speed static noinline 1238# define inline_speed static noinline
494#endif 1239#endif
495 1240
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1241#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1280# include "ev_win32.c"
536#endif 1281#endif
537 1282
538/*****************************************************************************/ 1283/*****************************************************************************/
539 1284
1285/* define a suitable floor function (only used by periodics atm) */
1286
1287#if EV_USE_FLOOR
1288# include <math.h>
1289# define ev_floor(v) floor (v)
1290#else
1291
1292#include <float.h>
1293
1294/* a floor() replacement function, should be independent of ev_tstamp type */
1295static ev_tstamp noinline
1296ev_floor (ev_tstamp v)
1297{
1298 /* the choice of shift factor is not terribly important */
1299#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1300 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1301#else
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1303#endif
1304
1305 /* argument too large for an unsigned long? */
1306 if (expect_false (v >= shift))
1307 {
1308 ev_tstamp f;
1309
1310 if (v == v - 1.)
1311 return v; /* very large number */
1312
1313 f = shift * ev_floor (v * (1. / shift));
1314 return f + ev_floor (v - f);
1315 }
1316
1317 /* special treatment for negative args? */
1318 if (expect_false (v < 0.))
1319 {
1320 ev_tstamp f = -ev_floor (-v);
1321
1322 return f - (f == v ? 0 : 1);
1323 }
1324
1325 /* fits into an unsigned long */
1326 return (unsigned long)v;
1327}
1328
1329#endif
1330
1331/*****************************************************************************/
1332
1333#ifdef __linux
1334# include <sys/utsname.h>
1335#endif
1336
1337static unsigned int noinline ecb_cold
1338ev_linux_version (void)
1339{
1340#ifdef __linux
1341 unsigned int v = 0;
1342 struct utsname buf;
1343 int i;
1344 char *p = buf.release;
1345
1346 if (uname (&buf))
1347 return 0;
1348
1349 for (i = 3+1; --i; )
1350 {
1351 unsigned int c = 0;
1352
1353 for (;;)
1354 {
1355 if (*p >= '0' && *p <= '9')
1356 c = c * 10 + *p++ - '0';
1357 else
1358 {
1359 p += *p == '.';
1360 break;
1361 }
1362 }
1363
1364 v = (v << 8) | c;
1365 }
1366
1367 return v;
1368#else
1369 return 0;
1370#endif
1371}
1372
1373/*****************************************************************************/
1374
540#if EV_AVOID_STDIO 1375#if EV_AVOID_STDIO
541static void noinline 1376static void noinline ecb_cold
542ev_printerr (const char *msg) 1377ev_printerr (const char *msg)
543{ 1378{
544 write (STDERR_FILENO, msg, strlen (msg)); 1379 write (STDERR_FILENO, msg, strlen (msg));
545} 1380}
546#endif 1381#endif
547 1382
548static void (*syserr_cb)(const char *msg); 1383static void (*syserr_cb)(const char *msg) EV_THROW;
549 1384
550void 1385void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1386ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1387{
553 syserr_cb = cb; 1388 syserr_cb = cb;
554} 1389}
555 1390
556static void noinline 1391static void noinline ecb_cold
557ev_syserr (const char *msg) 1392ev_syserr (const char *msg)
558{ 1393{
559 if (!msg) 1394 if (!msg)
560 msg = "(libev) system error"; 1395 msg = "(libev) system error";
561 1396
562 if (syserr_cb) 1397 if (syserr_cb)
563 syserr_cb (msg); 1398 syserr_cb (msg);
564 else 1399 else
565 { 1400 {
566#if EV_AVOID_STDIO 1401#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1402 ev_printerr (msg);
570 ev_printerr (": "); 1403 ev_printerr (": ");
571 ev_printerr (err); 1404 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1405 ev_printerr ("\n");
573#else 1406#else
574 perror (msg); 1407 perror (msg);
575#endif 1408#endif
576 abort (); 1409 abort ();
577 } 1410 }
578} 1411}
579 1412
580static void * 1413static void *
581ev_realloc_emul (void *ptr, long size) 1414ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1415{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1416 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1417 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1418 * the single unix specification, so work around them here.
1419 * recently, also (at least) fedora and debian started breaking it,
1420 * despite documenting it otherwise.
589 */ 1421 */
590 1422
591 if (size) 1423 if (size)
592 return realloc (ptr, size); 1424 return realloc (ptr, size);
593 1425
594 free (ptr); 1426 free (ptr);
595 return 0; 1427 return 0;
596#endif
597} 1428}
598 1429
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1430static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1431
601void 1432void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1433ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1434{
604 alloc = cb; 1435 alloc = cb;
605} 1436}
606 1437
607inline_speed void * 1438inline_speed void *
… …
610 ptr = alloc (ptr, size); 1441 ptr = alloc (ptr, size);
611 1442
612 if (!ptr && size) 1443 if (!ptr && size)
613 { 1444 {
614#if EV_AVOID_STDIO 1445#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1446 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1447#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1448 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1449#endif
619 abort (); 1450 abort ();
620 } 1451 }
621 1452
622 return ptr; 1453 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1470 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1471 unsigned char unused;
641#if EV_USE_EPOLL 1472#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1473 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1474#endif
644#if EV_SELECT_IS_WINSOCKET 1475#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1476 SOCKET handle;
1477#endif
1478#if EV_USE_IOCP
1479 OVERLAPPED or, ow;
646#endif 1480#endif
647} ANFD; 1481} ANFD;
648 1482
649/* stores the pending event set for a given watcher */ 1483/* stores the pending event set for a given watcher */
650typedef struct 1484typedef struct
… …
692 #undef VAR 1526 #undef VAR
693 }; 1527 };
694 #include "ev_wrap.h" 1528 #include "ev_wrap.h"
695 1529
696 static struct ev_loop default_loop_struct; 1530 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1531 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1532
699#else 1533#else
700 1534
701 ev_tstamp ev_rt_now; 1535 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1536 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1537 #include "ev_vars.h"
704 #undef VAR 1538 #undef VAR
705 1539
706 static int ev_default_loop_ptr; 1540 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1549# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1550# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1551# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1552#endif
719 1553
720#define EVUNLOOP_RECURSE 0x80 1554#define EVBREAK_RECURSE 0x80
721 1555
722/*****************************************************************************/ 1556/*****************************************************************************/
723 1557
724#ifndef EV_HAVE_EV_TIME 1558#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1559ev_tstamp
726ev_time (void) 1560ev_time (void) EV_THROW
727{ 1561{
728#if EV_USE_REALTIME 1562#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1563 if (expect_true (have_realtime))
730 { 1564 {
731 struct timespec ts; 1565 struct timespec ts;
… …
755 return ev_time (); 1589 return ev_time ();
756} 1590}
757 1591
758#if EV_MULTIPLICITY 1592#if EV_MULTIPLICITY
759ev_tstamp 1593ev_tstamp
760ev_now (EV_P) 1594ev_now (EV_P) EV_THROW
761{ 1595{
762 return ev_rt_now; 1596 return ev_rt_now;
763} 1597}
764#endif 1598#endif
765 1599
766void 1600void
767ev_sleep (ev_tstamp delay) 1601ev_sleep (ev_tstamp delay) EV_THROW
768{ 1602{
769 if (delay > 0.) 1603 if (delay > 0.)
770 { 1604 {
771#if EV_USE_NANOSLEEP 1605#if EV_USE_NANOSLEEP
772 struct timespec ts; 1606 struct timespec ts;
773 1607
774 ts.tv_sec = (time_t)delay; 1608 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1609 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1610#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1611 Sleep ((unsigned long)(delay * 1e3));
780#else 1612#else
781 struct timeval tv; 1613 struct timeval tv;
782 1614
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1615 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1616 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1617 /* by older ones */
1618 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1619 select (0, 0, 0, 0, &tv);
790#endif 1620#endif
791 } 1621 }
792} 1622}
793 1623
… …
804 1634
805 do 1635 do
806 ncur <<= 1; 1636 ncur <<= 1;
807 while (cnt > ncur); 1637 while (cnt > ncur);
808 1638
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1641 {
812 ncur *= elem; 1642 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1644 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1646 }
817 1647
818 return ncur; 1648 return ncur;
819} 1649}
820 1650
821static noinline void * 1651static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1652array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1653{
824 *cur = array_nextsize (elem, *cur, cnt); 1654 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1655 return ev_realloc (base, elem * *cur);
826} 1656}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1660
831#define array_needsize(type,base,cur,cnt,init) \ 1661#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1662 if (expect_false ((cnt) > (cur))) \
833 { \ 1663 { \
834 int ocur_ = (cur); \ 1664 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1665 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1666 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1667 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1668 }
839 1669
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1687pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1688{
859} 1689}
860 1690
861void noinline 1691void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1692ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1693{
864 W w_ = (W)w; 1694 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1695 int pri = ABSPRI (w_);
866 1696
867 if (expect_false (w_->pending)) 1697 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1701 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1702 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1703 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1704 pendings [pri][w_->pending - 1].events = revents;
875 } 1705 }
1706
1707 pendingpri = NUMPRI - 1;
876} 1708}
877 1709
878inline_speed void 1710inline_speed void
879feed_reverse (EV_P_ W w) 1711feed_reverse (EV_P_ W w)
880{ 1712{
… …
926 if (expect_true (!anfd->reify)) 1758 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1759 fd_event_nocheck (EV_A_ fd, revents);
928} 1760}
929 1761
930void 1762void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1763ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1764{
933 if (fd >= 0 && fd < anfdmax) 1765 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1766 fd_event_nocheck (EV_A_ fd, revents);
935} 1767}
936 1768
… …
939inline_size void 1771inline_size void
940fd_reify (EV_P) 1772fd_reify (EV_P)
941{ 1773{
942 int i; 1774 int i;
943 1775
1776#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1777 for (i = 0; i < fdchangecnt; ++i)
1778 {
1779 int fd = fdchanges [i];
1780 ANFD *anfd = anfds + fd;
1781
1782 if (anfd->reify & EV__IOFDSET && anfd->head)
1783 {
1784 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1785
1786 if (handle != anfd->handle)
1787 {
1788 unsigned long arg;
1789
1790 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1791
1792 /* handle changed, but fd didn't - we need to do it in two steps */
1793 backend_modify (EV_A_ fd, anfd->events, 0);
1794 anfd->events = 0;
1795 anfd->handle = handle;
1796 }
1797 }
1798 }
1799#endif
1800
944 for (i = 0; i < fdchangecnt; ++i) 1801 for (i = 0; i < fdchangecnt; ++i)
945 { 1802 {
946 int fd = fdchanges [i]; 1803 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1804 ANFD *anfd = anfds + fd;
948 ev_io *w; 1805 ev_io *w;
949 1806
950 unsigned char events = 0; 1807 unsigned char o_events = anfd->events;
1808 unsigned char o_reify = anfd->reify;
951 1809
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1810 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1811
955#if EV_SELECT_IS_WINSOCKET 1812 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1813 {
958 unsigned long arg; 1814 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1815
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1816 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1817 anfd->events |= (unsigned char)w->events;
1818
1819 if (o_events != anfd->events)
1820 o_reify = EV__IOFDSET; /* actually |= */
961 } 1821 }
962#endif
963 1822
964 { 1823 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1824 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1825 }
975 1826
976 fdchangecnt = 0; 1827 fdchangecnt = 0;
977} 1828}
978 1829
… …
990 fdchanges [fdchangecnt - 1] = fd; 1841 fdchanges [fdchangecnt - 1] = fd;
991 } 1842 }
992} 1843}
993 1844
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1845/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1846inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1847fd_kill (EV_P_ int fd)
997{ 1848{
998 ev_io *w; 1849 ev_io *w;
999 1850
1000 while ((w = (ev_io *)anfds [fd].head)) 1851 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1854 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1855 }
1005} 1856}
1006 1857
1007/* check whether the given fd is actually valid, for error recovery */ 1858/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1859inline_size int ecb_cold
1009fd_valid (int fd) 1860fd_valid (int fd)
1010{ 1861{
1011#ifdef _WIN32 1862#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1863 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1864#else
1014 return fcntl (fd, F_GETFD) != -1; 1865 return fcntl (fd, F_GETFD) != -1;
1015#endif 1866#endif
1016} 1867}
1017 1868
1018/* called on EBADF to verify fds */ 1869/* called on EBADF to verify fds */
1019static void noinline 1870static void noinline ecb_cold
1020fd_ebadf (EV_P) 1871fd_ebadf (EV_P)
1021{ 1872{
1022 int fd; 1873 int fd;
1023 1874
1024 for (fd = 0; fd < anfdmax; ++fd) 1875 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1877 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1878 fd_kill (EV_A_ fd);
1028} 1879}
1029 1880
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1881/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1882static void noinline ecb_cold
1032fd_enomem (EV_P) 1883fd_enomem (EV_P)
1033{ 1884{
1034 int fd; 1885 int fd;
1035 1886
1036 for (fd = anfdmax; fd--; ) 1887 for (fd = anfdmax; fd--; )
… …
1231 2082
1232/*****************************************************************************/ 2083/*****************************************************************************/
1233 2084
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2085#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2086
1236static void noinline 2087static void noinline ecb_cold
1237evpipe_init (EV_P) 2088evpipe_init (EV_P)
1238{ 2089{
1239 if (!ev_is_active (&pipe_w)) 2090 if (!ev_is_active (&pipe_w))
1240 { 2091 {
2092 int fds [2];
2093
1241# if EV_USE_EVENTFD 2094# if EV_USE_EVENTFD
2095 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2096 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2097 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2098 fds [1] = eventfd (0, 0);
1245 2099
1246 if (evfd >= 0) 2100 if (fds [1] < 0)
2101# endif
1247 { 2102 {
2103 while (pipe (fds))
2104 ev_syserr ("(libev) error creating signal/async pipe");
2105
2106 fd_intern (fds [0]);
2107 }
2108
1248 evpipe [0] = -1; 2109 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2110
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2111 if (evpipe [1] < 0)
2112 evpipe [1] = fds [1]; /* first call, set write fd */
2113 else
2114 {
2115 /* on subsequent calls, do not change evpipe [1] */
2116 /* so that evpipe_write can always rely on its value. */
2117 /* this branch does not do anything sensible on windows, */
2118 /* so must not be executed on windows */
2119
2120 dup2 (fds [1], evpipe [1]);
2121 close (fds [1]);
2122 }
2123
2124 fd_intern (evpipe [1]);
2125
2126 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2127 ev_io_start (EV_A_ &pipe_w);
2128 ev_unref (EV_A); /* watcher should not keep loop alive */
2129 }
2130}
2131
2132inline_speed void
2133evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2134{
2135 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2136
2137 if (expect_true (*flag))
2138 return;
2139
2140 *flag = 1;
2141 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2142
2143 pipe_write_skipped = 1;
2144
2145 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2146
2147 if (pipe_write_wanted)
2148 {
2149 int old_errno;
2150
2151 pipe_write_skipped = 0;
2152 ECB_MEMORY_FENCE_RELEASE;
2153
2154 old_errno = errno; /* save errno because write will clobber it */
2155
2156#if EV_USE_EVENTFD
2157 if (evpipe [0] < 0)
2158 {
2159 uint64_t counter = 1;
2160 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2161 }
1252 else 2162 else
1253# endif 2163#endif
1254 { 2164 {
1255 while (pipe (evpipe)) 2165#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2166 WSABUF buf;
1257 2167 DWORD sent;
1258 fd_intern (evpipe [0]); 2168 buf.buf = &buf;
1259 fd_intern (evpipe [1]); 2169 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2170 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2171#else
2172 write (evpipe [1], &(evpipe [1]), 1);
2173#endif
1261 } 2174 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1291 write (evpipe [1], &dummy, 1);
1292 2175
1293 errno = old_errno; 2176 errno = old_errno;
1294 } 2177 }
1295} 2178}
1296 2179
… …
1299static void 2182static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2183pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2184{
1302 int i; 2185 int i;
1303 2186
2187 if (revents & EV_READ)
2188 {
1304#if EV_USE_EVENTFD 2189#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2190 if (evpipe [0] < 0)
1306 { 2191 {
1307 uint64_t counter; 2192 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2193 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2194 }
1310 else 2195 else
1311#endif 2196#endif
1312 { 2197 {
1313 char dummy; 2198 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2199#ifdef _WIN32
2200 WSABUF buf;
2201 DWORD recvd;
2202 DWORD flags = 0;
2203 buf.buf = dummy;
2204 buf.len = sizeof (dummy);
2205 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2206#else
1315 read (evpipe [0], &dummy, 1); 2207 read (evpipe [0], &dummy, sizeof (dummy));
2208#endif
2209 }
1316 } 2210 }
1317 2211
2212 pipe_write_skipped = 0;
2213
2214 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2215
2216#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2217 if (sig_pending)
1319 { 2218 {
1320 sig_pending = 0; 2219 sig_pending = 0;
2220
2221 ECB_MEMORY_FENCE;
1321 2222
1322 for (i = EV_NSIG - 1; i--; ) 2223 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2224 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2225 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2226 }
2227#endif
1326 2228
1327#if EV_ASYNC_ENABLE 2229#if EV_ASYNC_ENABLE
1328 if (async_pending) 2230 if (async_pending)
1329 { 2231 {
1330 async_pending = 0; 2232 async_pending = 0;
2233
2234 ECB_MEMORY_FENCE;
1331 2235
1332 for (i = asynccnt; i--; ) 2236 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2237 if (asyncs [i]->sent)
1334 { 2238 {
1335 asyncs [i]->sent = 0; 2239 asyncs [i]->sent = 0;
2240 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2241 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2242 }
1338 } 2243 }
1339#endif 2244#endif
1340} 2245}
1341 2246
1342/*****************************************************************************/ 2247/*****************************************************************************/
1343 2248
2249void
2250ev_feed_signal (int signum) EV_THROW
2251{
2252#if EV_MULTIPLICITY
2253 EV_P;
2254 ECB_MEMORY_FENCE_ACQUIRE;
2255 EV_A = signals [signum - 1].loop;
2256
2257 if (!EV_A)
2258 return;
2259#endif
2260
2261 signals [signum - 1].pending = 1;
2262 evpipe_write (EV_A_ &sig_pending);
2263}
2264
1344static void 2265static void
1345ev_sighandler (int signum) 2266ev_sighandler (int signum)
1346{ 2267{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2268#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2269 signal (signum, ev_sighandler);
1353#endif 2270#endif
1354 2271
1355 signals [signum - 1].pending = 1; 2272 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2273}
1358 2274
1359void noinline 2275void noinline
1360ev_feed_signal_event (EV_P_ int signum) 2276ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 2277{
1362 WL w; 2278 WL w;
1363 2279
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2280 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2281 return;
1366 2282
1367 --signum; 2283 --signum;
1368 2284
1369#if EV_MULTIPLICITY 2285#if EV_MULTIPLICITY
… …
1373 if (expect_false (signals [signum].loop != EV_A)) 2289 if (expect_false (signals [signum].loop != EV_A))
1374 return; 2290 return;
1375#endif 2291#endif
1376 2292
1377 signals [signum].pending = 0; 2293 signals [signum].pending = 0;
2294 ECB_MEMORY_FENCE_RELEASE;
1378 2295
1379 for (w = signals [signum].head; w; w = w->next) 2296 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2298}
1382 2299
… …
1461 2378
1462#endif 2379#endif
1463 2380
1464/*****************************************************************************/ 2381/*****************************************************************************/
1465 2382
2383#if EV_USE_IOCP
2384# include "ev_iocp.c"
2385#endif
1466#if EV_USE_PORT 2386#if EV_USE_PORT
1467# include "ev_port.c" 2387# include "ev_port.c"
1468#endif 2388#endif
1469#if EV_USE_KQUEUE 2389#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2390# include "ev_kqueue.c"
… …
1477#endif 2397#endif
1478#if EV_USE_SELECT 2398#if EV_USE_SELECT
1479# include "ev_select.c" 2399# include "ev_select.c"
1480#endif 2400#endif
1481 2401
1482int 2402int ecb_cold
1483ev_version_major (void) 2403ev_version_major (void) EV_THROW
1484{ 2404{
1485 return EV_VERSION_MAJOR; 2405 return EV_VERSION_MAJOR;
1486} 2406}
1487 2407
1488int 2408int ecb_cold
1489ev_version_minor (void) 2409ev_version_minor (void) EV_THROW
1490{ 2410{
1491 return EV_VERSION_MINOR; 2411 return EV_VERSION_MINOR;
1492} 2412}
1493 2413
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2414/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2415int inline_size ecb_cold
1496enable_secure (void) 2416enable_secure (void)
1497{ 2417{
1498#ifdef _WIN32 2418#ifdef _WIN32
1499 return 0; 2419 return 0;
1500#else 2420#else
1501 return getuid () != geteuid () 2421 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2422 || getgid () != getegid ();
1503#endif 2423#endif
1504} 2424}
1505 2425
1506unsigned int 2426unsigned int ecb_cold
1507ev_supported_backends (void) 2427ev_supported_backends (void) EV_THROW
1508{ 2428{
1509 unsigned int flags = 0; 2429 unsigned int flags = 0;
1510 2430
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2431 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2432 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2435 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2436
1517 return flags; 2437 return flags;
1518} 2438}
1519 2439
1520unsigned int 2440unsigned int ecb_cold
1521ev_recommended_backends (void) 2441ev_recommended_backends (void) EV_THROW
1522{ 2442{
1523 unsigned int flags = ev_supported_backends (); 2443 unsigned int flags = ev_supported_backends ();
1524 2444
1525#ifndef __NetBSD__ 2445#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2446 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2457#endif
1538 2458
1539 return flags; 2459 return flags;
1540} 2460}
1541 2461
2462unsigned int ecb_cold
2463ev_embeddable_backends (void) EV_THROW
2464{
2465 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2466
2467 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2468 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2469 flags &= ~EVBACKEND_EPOLL;
2470
2471 return flags;
2472}
2473
1542unsigned int 2474unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2475ev_backend (EV_P) EV_THROW
1556{ 2476{
1557 return backend; 2477 return backend;
1558} 2478}
1559 2479
1560#if EV_FEATURE_API 2480#if EV_FEATURE_API
1561unsigned int 2481unsigned int
1562ev_iteration (EV_P) 2482ev_iteration (EV_P) EV_THROW
1563{ 2483{
1564 return loop_count; 2484 return loop_count;
1565} 2485}
1566 2486
1567unsigned int 2487unsigned int
1568ev_depth (EV_P) 2488ev_depth (EV_P) EV_THROW
1569{ 2489{
1570 return loop_depth; 2490 return loop_depth;
1571} 2491}
1572 2492
1573void 2493void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2494ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2495{
1576 io_blocktime = interval; 2496 io_blocktime = interval;
1577} 2497}
1578 2498
1579void 2499void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2500ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2501{
1582 timeout_blocktime = interval; 2502 timeout_blocktime = interval;
1583} 2503}
1584 2504
1585void 2505void
1586ev_set_userdata (EV_P_ void *data) 2506ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2507{
1588 userdata = data; 2508 userdata = data;
1589} 2509}
1590 2510
1591void * 2511void *
1592ev_userdata (EV_P) 2512ev_userdata (EV_P) EV_THROW
1593{ 2513{
1594 return userdata; 2514 return userdata;
1595} 2515}
1596 2516
2517void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2518ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1598{ 2519{
1599 invoke_cb = invoke_pending_cb; 2520 invoke_cb = invoke_pending_cb;
1600} 2521}
1601 2522
2523void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2524ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2525{
1604 release_cb = release; 2526 release_cb = release;
1605 acquire_cb = acquire; 2527 acquire_cb = acquire;
1606} 2528}
1607#endif 2529#endif
1608 2530
1609/* initialise a loop structure, must be zero-initialised */ 2531/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2532static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2533loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2534{
1613 if (!backend) 2535 if (!backend)
1614 { 2536 {
2537 origflags = flags;
2538
1615#if EV_USE_REALTIME 2539#if EV_USE_REALTIME
1616 if (!have_realtime) 2540 if (!have_realtime)
1617 { 2541 {
1618 struct timespec ts; 2542 struct timespec ts;
1619 2543
… …
1641 if (!(flags & EVFLAG_NOENV) 2565 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2566 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2567 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2568 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2569
1646 ev_rt_now = ev_time (); 2570 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2571 mn_now = get_clock ();
1648 now_floor = mn_now; 2572 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2573 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2574#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2575 invoke_cb = ev_invoke_pending;
1652#endif 2576#endif
1653 2577
1654 io_blocktime = 0.; 2578 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2579 timeout_blocktime = 0.;
1656 backend = 0; 2580 backend = 0;
1657 backend_fd = -1; 2581 backend_fd = -1;
1658 sig_pending = 0; 2582 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2583#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2584 async_pending = 0;
1661#endif 2585#endif
2586 pipe_write_skipped = 0;
2587 pipe_write_wanted = 0;
2588 evpipe [0] = -1;
2589 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 2590#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2591 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2592#endif
1665#if EV_USE_SIGNALFD 2593#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2594 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2595#endif
1668 2596
1669 if (!(flags & 0x0000ffffU)) 2597 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2598 flags |= ev_recommended_backends ();
1671 2599
2600#if EV_USE_IOCP
2601 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2602#endif
1672#if EV_USE_PORT 2603#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2604 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2605#endif
1675#if EV_USE_KQUEUE 2606#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2624#endif
1694 } 2625 }
1695} 2626}
1696 2627
1697/* free up a loop structure */ 2628/* free up a loop structure */
1698static void noinline 2629void ecb_cold
1699loop_destroy (EV_P) 2630ev_loop_destroy (EV_P)
1700{ 2631{
1701 int i; 2632 int i;
2633
2634#if EV_MULTIPLICITY
2635 /* mimic free (0) */
2636 if (!EV_A)
2637 return;
2638#endif
2639
2640#if EV_CLEANUP_ENABLE
2641 /* queue cleanup watchers (and execute them) */
2642 if (expect_false (cleanupcnt))
2643 {
2644 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2645 EV_INVOKE_PENDING;
2646 }
2647#endif
2648
2649#if EV_CHILD_ENABLE
2650 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2651 {
2652 ev_ref (EV_A); /* child watcher */
2653 ev_signal_stop (EV_A_ &childev);
2654 }
2655#endif
1702 2656
1703 if (ev_is_active (&pipe_w)) 2657 if (ev_is_active (&pipe_w))
1704 { 2658 {
1705 /*ev_ref (EV_A);*/ 2659 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2660 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 2661
1708#if EV_USE_EVENTFD
1709 if (evfd >= 0)
1710 close (evfd);
1711#endif
1712
1713 if (evpipe [0] >= 0)
1714 {
1715 EV_WIN32_CLOSE_FD (evpipe [0]); 2662 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 2663 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 2664 }
1719 2665
1720#if EV_USE_SIGNALFD 2666#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 2667 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 2668 close (sigfd);
… …
1728#endif 2674#endif
1729 2675
1730 if (backend_fd >= 0) 2676 if (backend_fd >= 0)
1731 close (backend_fd); 2677 close (backend_fd);
1732 2678
2679#if EV_USE_IOCP
2680 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2681#endif
1733#if EV_USE_PORT 2682#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2684#endif
1736#if EV_USE_KQUEUE 2685#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2713 array_free (periodic, EMPTY);
1765#endif 2714#endif
1766#if EV_FORK_ENABLE 2715#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2716 array_free (fork, EMPTY);
1768#endif 2717#endif
2718#if EV_CLEANUP_ENABLE
2719 array_free (cleanup, EMPTY);
2720#endif
1769 array_free (prepare, EMPTY); 2721 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2722 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2723#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2724 array_free (async, EMPTY);
1773#endif 2725#endif
1774 2726
1775 backend = 0; 2727 backend = 0;
2728
2729#if EV_MULTIPLICITY
2730 if (ev_is_default_loop (EV_A))
2731#endif
2732 ev_default_loop_ptr = 0;
2733#if EV_MULTIPLICITY
2734 else
2735 ev_free (EV_A);
2736#endif
1776} 2737}
1777 2738
1778#if EV_USE_INOTIFY 2739#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2740inline_size void infy_fork (EV_P);
1780#endif 2741#endif
… …
1793#endif 2754#endif
1794#if EV_USE_INOTIFY 2755#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 2756 infy_fork (EV_A);
1796#endif 2757#endif
1797 2758
2759#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 2760 if (ev_is_active (&pipe_w))
1799 { 2761 {
1800 /* this "locks" the handlers against writing to the pipe */ 2762 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2763
1807 ev_ref (EV_A); 2764 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2765 ev_io_stop (EV_A_ &pipe_w);
1809 2766
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 2767 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 2768 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 2769
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 2770 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 2771 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 2772 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 2773 }
2774#endif
1827 2775
1828 postfork = 0; 2776 postfork = 0;
1829} 2777}
1830 2778
1831#if EV_MULTIPLICITY 2779#if EV_MULTIPLICITY
1832 2780
1833struct ev_loop * 2781struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2782ev_loop_new (unsigned int flags) EV_THROW
1835{ 2783{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2784 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2785
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2786 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2787 loop_init (EV_A_ flags);
1840 2788
1841 if (ev_backend (EV_A)) 2789 if (ev_backend (EV_A))
1842 return EV_A; 2790 return EV_A;
1843 2791
2792 ev_free (EV_A);
1844 return 0; 2793 return 0;
1845} 2794}
1846 2795
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2796#endif /* multiplicity */
1860 2797
1861#if EV_VERIFY 2798#if EV_VERIFY
1862static void noinline 2799static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2800verify_watcher (EV_P_ W w)
1864{ 2801{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2802 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2803
1867 if (w->pending) 2804 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2805 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2806}
1870 2807
1871static void noinline 2808static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2809verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2810{
1874 int i; 2811 int i;
1875 2812
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2813 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2818
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2819 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2820 }
1884} 2821}
1885 2822
1886static void noinline 2823static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2824array_verify (EV_P_ W *ws, int cnt)
1888{ 2825{
1889 while (cnt--) 2826 while (cnt--)
1890 { 2827 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2828 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2830 }
1894} 2831}
1895#endif 2832#endif
1896 2833
1897#if EV_FEATURE_API 2834#if EV_FEATURE_API
1898void 2835void ecb_cold
1899ev_verify (EV_P) 2836ev_verify (EV_P) EV_THROW
1900{ 2837{
1901#if EV_VERIFY 2838#if EV_VERIFY
1902 int i; 2839 int i;
1903 WL w; 2840 WL w, w2;
1904 2841
1905 assert (activecnt >= -1); 2842 assert (activecnt >= -1);
1906 2843
1907 assert (fdchangemax >= fdchangecnt); 2844 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2845 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2846 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2847
1911 assert (anfdmax >= 0); 2848 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2849 for (i = 0; i < anfdmax; ++i)
2850 {
2851 int j = 0;
2852
1913 for (w = anfds [i].head; w; w = w->next) 2853 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2854 {
1915 verify_watcher (EV_A_ (W)w); 2855 verify_watcher (EV_A_ (W)w);
2856
2857 if (j++ & 1)
2858 {
2859 assert (("libev: io watcher list contains a loop", w != w2));
2860 w2 = w2->next;
2861 }
2862
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2865 }
2866 }
1919 2867
1920 assert (timermax >= timercnt); 2868 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2869 verify_heap (EV_A_ timers, timercnt);
1922 2870
1923#if EV_PERIODIC_ENABLE 2871#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 2886#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2887 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2888 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2889#endif
1942 2890
2891#if EV_CLEANUP_ENABLE
2892 assert (cleanupmax >= cleanupcnt);
2893 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2894#endif
2895
1943#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2897 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2898 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2899#endif
1947 2900
… …
1964#endif 2917#endif
1965} 2918}
1966#endif 2919#endif
1967 2920
1968#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1969struct ev_loop * 2922struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2923#else
1972int 2924int
2925#endif
1973ev_default_loop (unsigned int flags) 2926ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2927{
1976 if (!ev_default_loop_ptr) 2928 if (!ev_default_loop_ptr)
1977 { 2929 {
1978#if EV_MULTIPLICITY 2930#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2931 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 2950
1999 return ev_default_loop_ptr; 2951 return ev_default_loop_ptr;
2000} 2952}
2001 2953
2002void 2954void
2003ev_default_destroy (void) 2955ev_loop_fork (EV_P) EV_THROW
2004{ 2956{
2005#if EV_MULTIPLICITY 2957 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 2958}
2028 2959
2029/*****************************************************************************/ 2960/*****************************************************************************/
2030 2961
2031void 2962void
… …
2033{ 2964{
2034 EV_CB_INVOKE ((W)w, revents); 2965 EV_CB_INVOKE ((W)w, revents);
2035} 2966}
2036 2967
2037unsigned int 2968unsigned int
2038ev_pending_count (EV_P) 2969ev_pending_count (EV_P) EV_THROW
2039{ 2970{
2040 int pri; 2971 int pri;
2041 unsigned int count = 0; 2972 unsigned int count = 0;
2042 2973
2043 for (pri = NUMPRI; pri--; ) 2974 for (pri = NUMPRI; pri--; )
… …
2047} 2978}
2048 2979
2049void noinline 2980void noinline
2050ev_invoke_pending (EV_P) 2981ev_invoke_pending (EV_P)
2051{ 2982{
2052 int pri; 2983 pendingpri = NUMPRI;
2053 2984
2054 for (pri = NUMPRI; pri--; ) 2985 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2986 {
2987 --pendingpri;
2988
2055 while (pendingcnt [pri]) 2989 while (pendingcnt [pendingpri])
2056 { 2990 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2991 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 2992
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061
2062 p->w->pending = 0; 2993 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 2994 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
2065 } 2996 }
2997 }
2066} 2998}
2067 2999
2068#if EV_IDLE_ENABLE 3000#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3001/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3002/* only when higher priorities are idle" logic */
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3059 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3060 }
2129} 3061}
2130 3062
2131#if EV_PERIODIC_ENABLE 3063#if EV_PERIODIC_ENABLE
3064
3065static void noinline
3066periodic_recalc (EV_P_ ev_periodic *w)
3067{
3068 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3069 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3070
3071 /* the above almost always errs on the low side */
3072 while (at <= ev_rt_now)
3073 {
3074 ev_tstamp nat = at + w->interval;
3075
3076 /* when resolution fails us, we use ev_rt_now */
3077 if (expect_false (nat == at))
3078 {
3079 at = ev_rt_now;
3080 break;
3081 }
3082
3083 at = nat;
3084 }
3085
3086 ev_at (w) = at;
3087}
3088
2132/* make periodics pending */ 3089/* make periodics pending */
2133inline_size void 3090inline_size void
2134periodics_reify (EV_P) 3091periodics_reify (EV_P)
2135{ 3092{
2136 EV_FREQUENT_CHECK; 3093 EV_FREQUENT_CHECK;
2137 3094
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3095 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3096 {
2140 int feed_count = 0;
2141
2142 do 3097 do
2143 { 3098 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3099 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3100
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3101 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3110 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3111 downheap (periodics, periodiccnt, HEAP0);
2157 } 3112 }
2158 else if (w->interval) 3113 else if (w->interval)
2159 { 3114 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3115 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 3116 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3117 downheap (periodics, periodiccnt, HEAP0);
2176 } 3118 }
2177 else 3119 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3120 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3128 }
2187} 3129}
2188 3130
2189/* simply recalculate all periodics */ 3131/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3132/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3133static void noinline ecb_cold
2192periodics_reschedule (EV_P) 3134periodics_reschedule (EV_P)
2193{ 3135{
2194 int i; 3136 int i;
2195 3137
2196 /* adjust periodics after time jump */ 3138 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3141 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3142
2201 if (w->reschedule_cb) 3143 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3144 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3145 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3146 periodic_recalc (EV_A_ w);
2205 3147
2206 ANHE_at_cache (periodics [i]); 3148 ANHE_at_cache (periodics [i]);
2207 } 3149 }
2208 3150
2209 reheap (periodics, periodiccnt); 3151 reheap (periodics, periodiccnt);
2210} 3152}
2211#endif 3153#endif
2212 3154
2213/* adjust all timers by a given offset */ 3155/* adjust all timers by a given offset */
2214static void noinline 3156static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3157timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3158{
2217 int i; 3159 int i;
2218 3160
2219 for (i = 0; i < timercnt; ++i) 3161 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3198 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3199 * in the unlikely event of having been preempted here.
2258 */ 3200 */
2259 for (i = 4; --i; ) 3201 for (i = 4; --i; )
2260 { 3202 {
3203 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3204 rtmn_diff = ev_rt_now - mn_now;
2262 3205
3206 diff = odiff - rtmn_diff;
3207
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3208 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 3209 return; /* all is well */
2265 3210
2266 ev_rt_now = ev_time (); 3211 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3212 mn_now = get_clock ();
2268 now_floor = mn_now; 3213 now_floor = mn_now;
… …
2290 3235
2291 mn_now = ev_rt_now; 3236 mn_now = ev_rt_now;
2292 } 3237 }
2293} 3238}
2294 3239
2295void 3240int
2296ev_loop (EV_P_ int flags) 3241ev_run (EV_P_ int flags)
2297{ 3242{
2298#if EV_FEATURE_API 3243#if EV_FEATURE_API
2299 ++loop_depth; 3244 ++loop_depth;
2300#endif 3245#endif
2301 3246
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3247 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3248
2304 loop_done = EVUNLOOP_CANCEL; 3249 loop_done = EVBREAK_CANCEL;
2305 3250
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3251 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3252
2308 do 3253 do
2309 { 3254 {
… …
2352 /* calculate blocking time */ 3297 /* calculate blocking time */
2353 { 3298 {
2354 ev_tstamp waittime = 0.; 3299 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3300 ev_tstamp sleeptime = 0.;
2356 3301
3302 /* remember old timestamp for io_blocktime calculation */
3303 ev_tstamp prev_mn_now = mn_now;
3304
3305 /* update time to cancel out callback processing overhead */
3306 time_update (EV_A_ 1e100);
3307
3308 /* from now on, we want a pipe-wake-up */
3309 pipe_write_wanted = 1;
3310
3311 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3312
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3313 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3314 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3315 waittime = MAX_BLOCKTIME;
2366 3316
2367 if (timercnt) 3317 if (timercnt)
2368 { 3318 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3319 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3320 if (waittime > to) waittime = to;
2371 } 3321 }
2372 3322
2373#if EV_PERIODIC_ENABLE 3323#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3324 if (periodiccnt)
2375 { 3325 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3326 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3327 if (waittime > to) waittime = to;
2378 } 3328 }
2379#endif 3329#endif
2380 3330
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3331 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3332 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3333 waittime = timeout_blocktime;
3334
3335 /* at this point, we NEED to wait, so we have to ensure */
3336 /* to pass a minimum nonzero value to the backend */
3337 if (expect_false (waittime < backend_mintime))
3338 waittime = backend_mintime;
2384 3339
2385 /* extra check because io_blocktime is commonly 0 */ 3340 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3341 if (expect_false (io_blocktime))
2387 { 3342 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3343 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3344
2390 if (sleeptime > waittime - backend_fudge) 3345 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3346 sleeptime = waittime - backend_mintime;
2392 3347
2393 if (expect_true (sleeptime > 0.)) 3348 if (expect_true (sleeptime > 0.))
2394 { 3349 {
2395 ev_sleep (sleeptime); 3350 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3351 waittime -= sleeptime;
… …
2399 } 3354 }
2400 3355
2401#if EV_FEATURE_API 3356#if EV_FEATURE_API
2402 ++loop_count; 3357 ++loop_count;
2403#endif 3358#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3359 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3360 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3361 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3362
3363 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3364
3365 ECB_MEMORY_FENCE_ACQUIRE;
3366 if (pipe_write_skipped)
3367 {
3368 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3369 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3370 }
3371
2407 3372
2408 /* update ev_rt_now, do magic */ 3373 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3374 time_update (EV_A_ waittime + sleeptime);
2410 } 3375 }
2411 3376
… …
2429 EV_INVOKE_PENDING; 3394 EV_INVOKE_PENDING;
2430 } 3395 }
2431 while (expect_true ( 3396 while (expect_true (
2432 activecnt 3397 activecnt
2433 && !loop_done 3398 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3399 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3400 ));
2436 3401
2437 if (loop_done == EVUNLOOP_ONE) 3402 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3403 loop_done = EVBREAK_CANCEL;
2439 3404
2440#if EV_FEATURE_API 3405#if EV_FEATURE_API
2441 --loop_depth; 3406 --loop_depth;
2442#endif 3407#endif
3408
3409 return activecnt;
2443} 3410}
2444 3411
2445void 3412void
2446ev_unloop (EV_P_ int how) 3413ev_break (EV_P_ int how) EV_THROW
2447{ 3414{
2448 loop_done = how; 3415 loop_done = how;
2449} 3416}
2450 3417
2451void 3418void
2452ev_ref (EV_P) 3419ev_ref (EV_P) EV_THROW
2453{ 3420{
2454 ++activecnt; 3421 ++activecnt;
2455} 3422}
2456 3423
2457void 3424void
2458ev_unref (EV_P) 3425ev_unref (EV_P) EV_THROW
2459{ 3426{
2460 --activecnt; 3427 --activecnt;
2461} 3428}
2462 3429
2463void 3430void
2464ev_now_update (EV_P) 3431ev_now_update (EV_P) EV_THROW
2465{ 3432{
2466 time_update (EV_A_ 1e100); 3433 time_update (EV_A_ 1e100);
2467} 3434}
2468 3435
2469void 3436void
2470ev_suspend (EV_P) 3437ev_suspend (EV_P) EV_THROW
2471{ 3438{
2472 ev_now_update (EV_A); 3439 ev_now_update (EV_A);
2473} 3440}
2474 3441
2475void 3442void
2476ev_resume (EV_P) 3443ev_resume (EV_P) EV_THROW
2477{ 3444{
2478 ev_tstamp mn_prev = mn_now; 3445 ev_tstamp mn_prev = mn_now;
2479 3446
2480 ev_now_update (EV_A); 3447 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3448 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3487 w->pending = 0;
2521 } 3488 }
2522} 3489}
2523 3490
2524int 3491int
2525ev_clear_pending (EV_P_ void *w) 3492ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3493{
2527 W w_ = (W)w; 3494 W w_ = (W)w;
2528 int pending = w_->pending; 3495 int pending = w_->pending;
2529 3496
2530 if (expect_true (pending)) 3497 if (expect_true (pending))
… …
2563} 3530}
2564 3531
2565/*****************************************************************************/ 3532/*****************************************************************************/
2566 3533
2567void noinline 3534void noinline
2568ev_io_start (EV_P_ ev_io *w) 3535ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3536{
2570 int fd = w->fd; 3537 int fd = w->fd;
2571 3538
2572 if (expect_false (ev_is_active (w))) 3539 if (expect_false (ev_is_active (w)))
2573 return; 3540 return;
… …
2579 3546
2580 ev_start (EV_A_ (W)w, 1); 3547 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3548 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3549 wlist_add (&anfds[fd].head, (WL)w);
2583 3550
3551 /* common bug, apparently */
3552 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3553
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3554 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3555 w->events &= ~EV__IOFDSET;
2586 3556
2587 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2588} 3558}
2589 3559
2590void noinline 3560void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3561ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3562{
2593 clear_pending (EV_A_ (W)w); 3563 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3564 if (expect_false (!ev_is_active (w)))
2595 return; 3565 return;
2596 3566
… …
2599 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2600 3570
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3571 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2603 3573
2604 fd_change (EV_A_ w->fd, 1); 3574 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3575
2606 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2607} 3577}
2608 3578
2609void noinline 3579void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3580ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3581{
2612 if (expect_false (ev_is_active (w))) 3582 if (expect_false (ev_is_active (w)))
2613 return; 3583 return;
2614 3584
2615 ev_at (w) += mn_now; 3585 ev_at (w) += mn_now;
… …
2629 3599
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3600 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3601}
2632 3602
2633void noinline 3603void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3604ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3605{
2636 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2638 return; 3608 return;
2639 3609
… …
2659 3629
2660 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2661} 3631}
2662 3632
2663void noinline 3633void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3634ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3635{
2666 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
3637
3638 clear_pending (EV_A_ (W)w);
2667 3639
2668 if (ev_is_active (w)) 3640 if (ev_is_active (w))
2669 { 3641 {
2670 if (w->repeat) 3642 if (w->repeat)
2671 { 3643 {
… …
2684 3656
2685 EV_FREQUENT_CHECK; 3657 EV_FREQUENT_CHECK;
2686} 3658}
2687 3659
2688ev_tstamp 3660ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3661ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3662{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3664}
2693 3665
2694#if EV_PERIODIC_ENABLE 3666#if EV_PERIODIC_ENABLE
2695void noinline 3667void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3668ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3669{
2698 if (expect_false (ev_is_active (w))) 3670 if (expect_false (ev_is_active (w)))
2699 return; 3671 return;
2700 3672
2701 if (w->reschedule_cb) 3673 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3674 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3675 else if (w->interval)
2704 { 3676 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3678 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3679 }
2709 else 3680 else
2710 ev_at (w) = w->offset; 3681 ev_at (w) = w->offset;
2711 3682
2712 EV_FREQUENT_CHECK; 3683 EV_FREQUENT_CHECK;
… …
2722 3693
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3694 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3695}
2725 3696
2726void noinline 3697void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3698ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3699{
2729 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2731 return; 3702 return;
2732 3703
… …
2750 3721
2751 EV_FREQUENT_CHECK; 3722 EV_FREQUENT_CHECK;
2752} 3723}
2753 3724
2754void noinline 3725void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3726ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3727{
2757 /* TODO: use adjustheap and recalculation */ 3728 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3729 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3730 ev_periodic_start (EV_A_ w);
2760} 3731}
… …
2765#endif 3736#endif
2766 3737
2767#if EV_SIGNAL_ENABLE 3738#if EV_SIGNAL_ENABLE
2768 3739
2769void noinline 3740void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3741ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3742{
2772 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2773 return; 3744 return;
2774 3745
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3746 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2777#if EV_MULTIPLICITY 3748#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 3749 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3750 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 3751
2781 signals [w->signum - 1].loop = EV_A; 3752 signals [w->signum - 1].loop = EV_A;
3753 ECB_MEMORY_FENCE_RELEASE;
2782#endif 3754#endif
2783 3755
2784 EV_FREQUENT_CHECK; 3756 EV_FREQUENT_CHECK;
2785 3757
2786#if EV_USE_SIGNALFD 3758#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 3805 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3806 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3808 sigaction (w->signum, &sa, 0);
2837 3809
3810 if (origflags & EVFLAG_NOSIGMASK)
3811 {
2838 sigemptyset (&sa.sa_mask); 3812 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3813 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3815 }
2841#endif 3816#endif
2842 } 3817 }
2843 3818
2844 EV_FREQUENT_CHECK; 3819 EV_FREQUENT_CHECK;
2845} 3820}
2846 3821
2847void noinline 3822void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3823ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3824{
2850 clear_pending (EV_A_ (W)w); 3825 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3826 if (expect_false (!ev_is_active (w)))
2852 return; 3827 return;
2853 3828
… …
2884#endif 3859#endif
2885 3860
2886#if EV_CHILD_ENABLE 3861#if EV_CHILD_ENABLE
2887 3862
2888void 3863void
2889ev_child_start (EV_P_ ev_child *w) 3864ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3865{
2891#if EV_MULTIPLICITY 3866#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3867 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3868#endif
2894 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
… …
2901 3876
2902 EV_FREQUENT_CHECK; 3877 EV_FREQUENT_CHECK;
2903} 3878}
2904 3879
2905void 3880void
2906ev_child_stop (EV_P_ ev_child *w) 3881ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3882{
2908 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2910 return; 3885 return;
2911 3886
… …
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3913# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 3914
2940static void noinline 3915static void noinline
2941infy_add (EV_P_ ev_stat *w) 3916infy_add (EV_P_ ev_stat *w)
2942{ 3917{
2943 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3918 w->wd = inotify_add_watch (fs_fd, w->path,
3919 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3920 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3921 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 3922
2945 if (w->wd >= 0) 3923 if (w->wd >= 0)
2946 { 3924 {
2947 struct statfs sfs; 3925 struct statfs sfs;
2948 3926
… …
2952 3930
2953 if (!fs_2625) 3931 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3932 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 3933 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 3934 && (sfs.f_type == 0x1373 /* devfs */
3935 || sfs.f_type == 0x4006 /* fat */
3936 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 3937 || sfs.f_type == 0xEF53 /* ext2/3 */
3938 || sfs.f_type == 0x72b6 /* jffs2 */
3939 || sfs.f_type == 0x858458f6 /* ramfs */
3940 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 3941 || sfs.f_type == 0x3153464a /* jfs */
3942 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 3943 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 3944 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 3945 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3946 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 3947 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3948 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 3949 }
… …
2986 if (!pend || pend == path) 3970 if (!pend || pend == path)
2987 break; 3971 break;
2988 3972
2989 *pend = 0; 3973 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 3974 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 3975 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3976 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 3977 }
2994 } 3978 }
2995 3979
2996 if (w->wd >= 0) 3980 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4047 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4048 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4049 }
3066} 4050}
3067 4051
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 4052inline_size void ecb_cold
3101ev_check_2625 (EV_P) 4053ev_check_2625 (EV_P)
3102{ 4054{
3103 /* kernels < 2.6.25 are borked 4055 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4056 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4057 */
… …
3110} 4062}
3111 4063
3112inline_size int 4064inline_size int
3113infy_newfd (void) 4065infy_newfd (void)
3114{ 4066{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4067#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4068 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4069 if (fd >= 0)
3118 return fd; 4070 return fd;
3119#endif 4071#endif
3120 return inotify_init (); 4072 return inotify_init ();
… …
3195#else 4147#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4148# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4149#endif
3198 4150
3199void 4151void
3200ev_stat_stat (EV_P_ ev_stat *w) 4152ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 4153{
3202 if (lstat (w->path, &w->attr) < 0) 4154 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4155 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4156 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4157 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4196 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4197 }
3246} 4198}
3247 4199
3248void 4200void
3249ev_stat_start (EV_P_ ev_stat *w) 4201ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 4202{
3251 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3252 return; 4204 return;
3253 4205
3254 ev_stat_stat (EV_A_ w); 4206 ev_stat_stat (EV_A_ w);
… …
3275 4227
3276 EV_FREQUENT_CHECK; 4228 EV_FREQUENT_CHECK;
3277} 4229}
3278 4230
3279void 4231void
3280ev_stat_stop (EV_P_ ev_stat *w) 4232ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 4233{
3282 clear_pending (EV_A_ (W)w); 4234 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4235 if (expect_false (!ev_is_active (w)))
3284 return; 4236 return;
3285 4237
… …
3301} 4253}
3302#endif 4254#endif
3303 4255
3304#if EV_IDLE_ENABLE 4256#if EV_IDLE_ENABLE
3305void 4257void
3306ev_idle_start (EV_P_ ev_idle *w) 4258ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 4259{
3308 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
3309 return; 4261 return;
3310 4262
3311 pri_adjust (EV_A_ (W)w); 4263 pri_adjust (EV_A_ (W)w);
… …
3324 4276
3325 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3326} 4278}
3327 4279
3328void 4280void
3329ev_idle_stop (EV_P_ ev_idle *w) 4281ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 4282{
3331 clear_pending (EV_A_ (W)w); 4283 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4284 if (expect_false (!ev_is_active (w)))
3333 return; 4285 return;
3334 4286
… …
3348} 4300}
3349#endif 4301#endif
3350 4302
3351#if EV_PREPARE_ENABLE 4303#if EV_PREPARE_ENABLE
3352void 4304void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4305ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4306{
3355 if (expect_false (ev_is_active (w))) 4307 if (expect_false (ev_is_active (w)))
3356 return; 4308 return;
3357 4309
3358 EV_FREQUENT_CHECK; 4310 EV_FREQUENT_CHECK;
… …
3363 4315
3364 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3365} 4317}
3366 4318
3367void 4319void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4320ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4321{
3370 clear_pending (EV_A_ (W)w); 4322 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4323 if (expect_false (!ev_is_active (w)))
3372 return; 4324 return;
3373 4325
… …
3386} 4338}
3387#endif 4339#endif
3388 4340
3389#if EV_CHECK_ENABLE 4341#if EV_CHECK_ENABLE
3390void 4342void
3391ev_check_start (EV_P_ ev_check *w) 4343ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4344{
3393 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3394 return; 4346 return;
3395 4347
3396 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
… …
3401 4353
3402 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3403} 4355}
3404 4356
3405void 4357void
3406ev_check_stop (EV_P_ ev_check *w) 4358ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4359{
3408 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3410 return; 4362 return;
3411 4363
… …
3424} 4376}
3425#endif 4377#endif
3426 4378
3427#if EV_EMBED_ENABLE 4379#if EV_EMBED_ENABLE
3428void noinline 4380void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4381ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4382{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4383 ev_run (w->other, EVRUN_NOWAIT);
3432} 4384}
3433 4385
3434static void 4386static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4387embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4388{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4389 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4390
3439 if (ev_cb (w)) 4391 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4392 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4393 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4394 ev_run (w->other, EVRUN_NOWAIT);
3443} 4395}
3444 4396
3445static void 4397static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4398embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4399{
… …
3451 EV_P = w->other; 4403 EV_P = w->other;
3452 4404
3453 while (fdchangecnt) 4405 while (fdchangecnt)
3454 { 4406 {
3455 fd_reify (EV_A); 4407 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4408 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4409 }
3458 } 4410 }
3459} 4411}
3460 4412
3461static void 4413static void
… …
3467 4419
3468 { 4420 {
3469 EV_P = w->other; 4421 EV_P = w->other;
3470 4422
3471 ev_loop_fork (EV_A); 4423 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4424 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4425 }
3474 4426
3475 ev_embed_start (EV_A_ w); 4427 ev_embed_start (EV_A_ w);
3476} 4428}
3477 4429
… …
3482 ev_idle_stop (EV_A_ idle); 4434 ev_idle_stop (EV_A_ idle);
3483} 4435}
3484#endif 4436#endif
3485 4437
3486void 4438void
3487ev_embed_start (EV_P_ ev_embed *w) 4439ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4440{
3489 if (expect_false (ev_is_active (w))) 4441 if (expect_false (ev_is_active (w)))
3490 return; 4442 return;
3491 4443
3492 { 4444 {
… …
3513 4465
3514 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
3515} 4467}
3516 4468
3517void 4469void
3518ev_embed_stop (EV_P_ ev_embed *w) 4470ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4471{
3520 clear_pending (EV_A_ (W)w); 4472 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4473 if (expect_false (!ev_is_active (w)))
3522 return; 4474 return;
3523 4475
… …
3533} 4485}
3534#endif 4486#endif
3535 4487
3536#if EV_FORK_ENABLE 4488#if EV_FORK_ENABLE
3537void 4489void
3538ev_fork_start (EV_P_ ev_fork *w) 4490ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4491{
3540 if (expect_false (ev_is_active (w))) 4492 if (expect_false (ev_is_active (w)))
3541 return; 4493 return;
3542 4494
3543 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
… …
3548 4500
3549 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3550} 4502}
3551 4503
3552void 4504void
3553ev_fork_stop (EV_P_ ev_fork *w) 4505ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4506{
3555 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3557 return; 4509 return;
3558 4510
… …
3569 4521
3570 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
3571} 4523}
3572#endif 4524#endif
3573 4525
4526#if EV_CLEANUP_ENABLE
4527void
4528ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4529{
4530 if (expect_false (ev_is_active (w)))
4531 return;
4532
4533 EV_FREQUENT_CHECK;
4534
4535 ev_start (EV_A_ (W)w, ++cleanupcnt);
4536 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4537 cleanups [cleanupcnt - 1] = w;
4538
4539 /* cleanup watchers should never keep a refcount on the loop */
4540 ev_unref (EV_A);
4541 EV_FREQUENT_CHECK;
4542}
4543
4544void
4545ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4546{
4547 clear_pending (EV_A_ (W)w);
4548 if (expect_false (!ev_is_active (w)))
4549 return;
4550
4551 EV_FREQUENT_CHECK;
4552 ev_ref (EV_A);
4553
4554 {
4555 int active = ev_active (w);
4556
4557 cleanups [active - 1] = cleanups [--cleanupcnt];
4558 ev_active (cleanups [active - 1]) = active;
4559 }
4560
4561 ev_stop (EV_A_ (W)w);
4562
4563 EV_FREQUENT_CHECK;
4564}
4565#endif
4566
3574#if EV_ASYNC_ENABLE 4567#if EV_ASYNC_ENABLE
3575void 4568void
3576ev_async_start (EV_P_ ev_async *w) 4569ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4570{
3578 if (expect_false (ev_is_active (w))) 4571 if (expect_false (ev_is_active (w)))
3579 return; 4572 return;
4573
4574 w->sent = 0;
3580 4575
3581 evpipe_init (EV_A); 4576 evpipe_init (EV_A);
3582 4577
3583 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
3584 4579
… …
3588 4583
3589 EV_FREQUENT_CHECK; 4584 EV_FREQUENT_CHECK;
3590} 4585}
3591 4586
3592void 4587void
3593ev_async_stop (EV_P_ ev_async *w) 4588ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4589{
3595 clear_pending (EV_A_ (W)w); 4590 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4591 if (expect_false (!ev_is_active (w)))
3597 return; 4592 return;
3598 4593
… …
3609 4604
3610 EV_FREQUENT_CHECK; 4605 EV_FREQUENT_CHECK;
3611} 4606}
3612 4607
3613void 4608void
3614ev_async_send (EV_P_ ev_async *w) 4609ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4610{
3616 w->sent = 1; 4611 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4612 evpipe_write (EV_A_ &async_pending);
3618} 4613}
3619#endif 4614#endif
… …
3656 4651
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4653}
3659 4654
3660void 4655void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4657{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4659
3665 if (expect_false (!once)) 4660 if (expect_false (!once))
3666 { 4661 {
… …
3687} 4682}
3688 4683
3689/*****************************************************************************/ 4684/*****************************************************************************/
3690 4685
3691#if EV_WALK_ENABLE 4686#if EV_WALK_ENABLE
3692void 4687void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4689{
3695 int i, j; 4690 int i, j;
3696 ev_watcher_list *wl, *wn; 4691 ev_watcher_list *wl, *wn;
3697 4692
3698 if (types & (EV_IO | EV_EMBED)) 4693 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4737#endif
3743 4738
3744#if EV_IDLE_ENABLE 4739#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4740 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4741 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4742 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4743 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4744#endif
3750 4745
3751#if EV_FORK_ENABLE 4746#if EV_FORK_ENABLE
… …
3804 4799
3805#if EV_MULTIPLICITY 4800#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4801 #include "ev_wrap.h"
3807#endif 4802#endif
3808 4803
3809#ifdef __cplusplus
3810}
3811#endif
3812

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