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Comparing libev/ev.c (file contents):
Revision 1.366 by root, Mon Jan 10 01:58:54 2011 UTC vs.
Revision 1.462 by root, Sun Jan 5 02:59:36 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 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
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* 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 */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 247#endif
233/* but consider reporting it, too! :) */ 248
234# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
235#endif 251#endif
236 252
237#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 256# else
241# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
242# endif 258# endif
243#endif 259#endif
244 260
245#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 264# else
249# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
250# endif 266# endif
251#endif 267#endif
… …
338 354
339#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 357#endif
342 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 378# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
351# else 383# else
… …
354# endif 386# endif
355#endif 387#endif
356 388
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 390
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
368#endif 394#endif
369 395
… …
376# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
378#endif 404#endif
379 405
380#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 409# include <sys/select.h>
383# endif 410# endif
384#endif 411#endif
385 412
386#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
393# endif 420# endif
394#endif
395
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif 421#endif
399 422
400#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h> 425# include <stdint.h>
… …
442#else 465#else
443# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
444#endif 467#endif
445 468
446/* 469/*
447 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 472 */
454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
455 475
456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
458 478
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
461 481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
462#if __GNUC__ >= 4 526 #if __GNUC__
463# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
464# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
465#else 542#else
466# define expect(expr,value) (expr) 543 #include <inttypes.h>
467# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
469# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
470# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
471#endif 557 #endif
558#endif
472 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
591/*****************************************************************************/
592
593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
595
596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0)
602#endif
603
604#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
606 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif (__sparc || __sparc__) && !__sparcv8
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
645 #endif
646 #endif
647#endif
648
649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1500 /* VC++ 2008 */
666 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
667 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
668 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
669 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
670 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
671 #elif _MSC_VER >= 1400 /* VC++ 2005 */
672 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
673 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
674 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
675 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
676 #elif defined _WIN32
677 #include <WinNT.h>
678 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
679 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
680 #include <mbarrier.h>
681 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
682 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
683 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
684 #elif __xlC__
685 #define ECB_MEMORY_FENCE __sync ()
686 #endif
687#endif
688
689#ifndef ECB_MEMORY_FENCE
690 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
691 /* we assume that these memory fences work on all variables/all memory accesses, */
692 /* not just C11 atomics and atomic accesses */
693 #include <stdatomic.h>
694 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
695 /* any fence other than seq_cst, which isn't very efficient for us. */
696 /* Why that is, we don't know - either the C11 memory model is quite useless */
697 /* for most usages, or gcc and clang have a bug */
698 /* I *currently* lean towards the latter, and inefficiently implement */
699 /* all three of ecb's fences as a seq_cst fence */
700 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
701 #endif
702#endif
703
704#ifndef ECB_MEMORY_FENCE
705 #if !ECB_AVOID_PTHREADS
706 /*
707 * if you get undefined symbol references to pthread_mutex_lock,
708 * or failure to find pthread.h, then you should implement
709 * the ECB_MEMORY_FENCE operations for your cpu/compiler
710 * OR provide pthread.h and link against the posix thread library
711 * of your system.
712 */
713 #include <pthread.h>
714 #define ECB_NEEDS_PTHREADS 1
715 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
716
717 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
718 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
719 #endif
720#endif
721
722#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
723 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
724#endif
725
726#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
727 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
728#endif
729
730/*****************************************************************************/
731
732#if __cplusplus
733 #define ecb_inline static inline
734#elif ECB_GCC_VERSION(2,5)
735 #define ecb_inline static __inline__
736#elif ECB_C99
737 #define ecb_inline static inline
738#else
739 #define ecb_inline static
740#endif
741
742#if ECB_GCC_VERSION(3,3)
743 #define ecb_restrict __restrict__
744#elif ECB_C99
745 #define ecb_restrict restrict
746#else
747 #define ecb_restrict
748#endif
749
750typedef int ecb_bool;
751
752#define ECB_CONCAT_(a, b) a ## b
753#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
754#define ECB_STRINGIFY_(a) # a
755#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
756
757#define ecb_function_ ecb_inline
758
759#if ECB_GCC_VERSION(3,1)
760 #define ecb_attribute(attrlist) __attribute__(attrlist)
761 #define ecb_is_constant(expr) __builtin_constant_p (expr)
762 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
763 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
764#else
765 #define ecb_attribute(attrlist)
766 #define ecb_is_constant(expr) 0
767 #define ecb_expect(expr,value) (expr)
768 #define ecb_prefetch(addr,rw,locality)
769#endif
770
771/* no emulation for ecb_decltype */
772#if ECB_GCC_VERSION(4,5)
773 #define ecb_decltype(x) __decltype(x)
774#elif ECB_GCC_VERSION(3,0)
775 #define ecb_decltype(x) __typeof(x)
776#endif
777
778#define ecb_noinline ecb_attribute ((__noinline__))
779#define ecb_unused ecb_attribute ((__unused__))
780#define ecb_const ecb_attribute ((__const__))
781#define ecb_pure ecb_attribute ((__pure__))
782
783#if ECB_C11
784 #define ecb_noreturn _Noreturn
785#else
786 #define ecb_noreturn ecb_attribute ((__noreturn__))
787#endif
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_artificial ecb_attribute ((__artificial__))
791 #define ecb_hot ecb_attribute ((__hot__))
792 #define ecb_cold ecb_attribute ((__cold__))
793#else
794 #define ecb_artificial
795 #define ecb_hot
796 #define ecb_cold
797#endif
798
799/* put around conditional expressions if you are very sure that the */
800/* expression is mostly true or mostly false. note that these return */
801/* booleans, not the expression. */
473#define expect_false(expr) expect ((expr) != 0, 0) 802#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#define expect_true(expr) expect ((expr) != 0, 1) 803#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
804/* for compatibility to the rest of the world */
805#define ecb_likely(expr) ecb_expect_true (expr)
806#define ecb_unlikely(expr) ecb_expect_false (expr)
807
808/* count trailing zero bits and count # of one bits */
809#if ECB_GCC_VERSION(3,4)
810 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
811 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
812 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
813 #define ecb_ctz32(x) __builtin_ctz (x)
814 #define ecb_ctz64(x) __builtin_ctzll (x)
815 #define ecb_popcount32(x) __builtin_popcount (x)
816 /* no popcountll */
817#else
818 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
819 ecb_function_ int
820 ecb_ctz32 (uint32_t x)
821 {
822 int r = 0;
823
824 x &= ~x + 1; /* this isolates the lowest bit */
825
826#if ECB_branchless_on_i386
827 r += !!(x & 0xaaaaaaaa) << 0;
828 r += !!(x & 0xcccccccc) << 1;
829 r += !!(x & 0xf0f0f0f0) << 2;
830 r += !!(x & 0xff00ff00) << 3;
831 r += !!(x & 0xffff0000) << 4;
832#else
833 if (x & 0xaaaaaaaa) r += 1;
834 if (x & 0xcccccccc) r += 2;
835 if (x & 0xf0f0f0f0) r += 4;
836 if (x & 0xff00ff00) r += 8;
837 if (x & 0xffff0000) r += 16;
838#endif
839
840 return r;
841 }
842
843 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
844 ecb_function_ int
845 ecb_ctz64 (uint64_t x)
846 {
847 int shift = x & 0xffffffffU ? 0 : 32;
848 return ecb_ctz32 (x >> shift) + shift;
849 }
850
851 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
852 ecb_function_ int
853 ecb_popcount32 (uint32_t x)
854 {
855 x -= (x >> 1) & 0x55555555;
856 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
857 x = ((x >> 4) + x) & 0x0f0f0f0f;
858 x *= 0x01010101;
859
860 return x >> 24;
861 }
862
863 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
864 ecb_function_ int ecb_ld32 (uint32_t x)
865 {
866 int r = 0;
867
868 if (x >> 16) { x >>= 16; r += 16; }
869 if (x >> 8) { x >>= 8; r += 8; }
870 if (x >> 4) { x >>= 4; r += 4; }
871 if (x >> 2) { x >>= 2; r += 2; }
872 if (x >> 1) { r += 1; }
873
874 return r;
875 }
876
877 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
878 ecb_function_ int ecb_ld64 (uint64_t x)
879 {
880 int r = 0;
881
882 if (x >> 32) { x >>= 32; r += 32; }
883
884 return r + ecb_ld32 (x);
885 }
886#endif
887
888ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
889ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
890ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
891ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
892
893ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
894ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
895{
896 return ( (x * 0x0802U & 0x22110U)
897 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
898}
899
900ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
901ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
902{
903 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
904 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
905 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
906 x = ( x >> 8 ) | ( x << 8);
907
908 return x;
909}
910
911ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
912ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
913{
914 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
915 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
916 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
917 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
918 x = ( x >> 16 ) | ( x << 16);
919
920 return x;
921}
922
923/* popcount64 is only available on 64 bit cpus as gcc builtin */
924/* so for this version we are lazy */
925ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
926ecb_function_ int
927ecb_popcount64 (uint64_t x)
928{
929 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
930}
931
932ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
933ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
934ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
935ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
936ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
937ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
938ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
939ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
940
941ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
942ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
943ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
944ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
945ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
946ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
947ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
948ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
949
950#if ECB_GCC_VERSION(4,3)
951 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
952 #define ecb_bswap32(x) __builtin_bswap32 (x)
953 #define ecb_bswap64(x) __builtin_bswap64 (x)
954#else
955 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
956 ecb_function_ uint16_t
957 ecb_bswap16 (uint16_t x)
958 {
959 return ecb_rotl16 (x, 8);
960 }
961
962 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
963 ecb_function_ uint32_t
964 ecb_bswap32 (uint32_t x)
965 {
966 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
967 }
968
969 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
970 ecb_function_ uint64_t
971 ecb_bswap64 (uint64_t x)
972 {
973 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
974 }
975#endif
976
977#if ECB_GCC_VERSION(4,5)
978 #define ecb_unreachable() __builtin_unreachable ()
979#else
980 /* this seems to work fine, but gcc always emits a warning for it :/ */
981 ecb_inline void ecb_unreachable (void) ecb_noreturn;
982 ecb_inline void ecb_unreachable (void) { }
983#endif
984
985/* try to tell the compiler that some condition is definitely true */
986#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
987
988ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
989ecb_inline unsigned char
990ecb_byteorder_helper (void)
991{
992 /* the union code still generates code under pressure in gcc, */
993 /* but less than using pointers, and always seems to */
994 /* successfully return a constant. */
995 /* the reason why we have this horrible preprocessor mess */
996 /* is to avoid it in all cases, at least on common architectures */
997 /* or when using a recent enough gcc version (>= 4.6) */
998#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
999 return 0x44;
1000#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1001 return 0x44;
1002#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1003 return 0x11;
1004#else
1005 union
1006 {
1007 uint32_t i;
1008 uint8_t c;
1009 } u = { 0x11223344 };
1010 return u.c;
1011#endif
1012}
1013
1014ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1015ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1016ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1017ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1018
1019#if ECB_GCC_VERSION(3,0) || ECB_C99
1020 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1021#else
1022 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1023#endif
1024
1025#if __cplusplus
1026 template<typename T>
1027 static inline T ecb_div_rd (T val, T div)
1028 {
1029 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1030 }
1031 template<typename T>
1032 static inline T ecb_div_ru (T val, T div)
1033 {
1034 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1035 }
1036#else
1037 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1038 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1039#endif
1040
1041#if ecb_cplusplus_does_not_suck
1042 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1043 template<typename T, int N>
1044 static inline int ecb_array_length (const T (&arr)[N])
1045 {
1046 return N;
1047 }
1048#else
1049 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1050#endif
1051
1052/*******************************************************************************/
1053/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1054
1055/* basically, everything uses "ieee pure-endian" floating point numbers */
1056/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1057#if 0 \
1058 || __i386 || __i386__ \
1059 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1060 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1061 || defined __arm__ && defined __ARM_EABI__ \
1062 || defined __s390__ || defined __s390x__ \
1063 || defined __mips__ \
1064 || defined __alpha__ \
1065 || defined __hppa__ \
1066 || defined __ia64__ \
1067 || defined __m68k__ \
1068 || defined __m88k__ \
1069 || defined __sh__ \
1070 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1071 #define ECB_STDFP 1
1072 #include <string.h> /* for memcpy */
1073#else
1074 #define ECB_STDFP 0
1075#endif
1076
1077#ifndef ECB_NO_LIBM
1078
1079 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1080
1081 /* only the oldest of old doesn't have this one. solaris. */
1082 #ifdef INFINITY
1083 #define ECB_INFINITY INFINITY
1084 #else
1085 #define ECB_INFINITY HUGE_VAL
1086 #endif
1087
1088 #ifdef NAN
1089 #define ECB_NAN NAN
1090 #else
1091 #define ECB_NAN ECB_INFINITY
1092 #endif
1093
1094 /* converts an ieee half/binary16 to a float */
1095 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1096 ecb_function_ float
1097 ecb_binary16_to_float (uint16_t x)
1098 {
1099 int e = (x >> 10) & 0x1f;
1100 int m = x & 0x3ff;
1101 float r;
1102
1103 if (!e ) r = ldexpf (m , -24);
1104 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1105 else if (m ) r = ECB_NAN;
1106 else r = ECB_INFINITY;
1107
1108 return x & 0x8000 ? -r : r;
1109 }
1110
1111 /* convert a float to ieee single/binary32 */
1112 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1113 ecb_function_ uint32_t
1114 ecb_float_to_binary32 (float x)
1115 {
1116 uint32_t r;
1117
1118 #if ECB_STDFP
1119 memcpy (&r, &x, 4);
1120 #else
1121 /* slow emulation, works for anything but -0 */
1122 uint32_t m;
1123 int e;
1124
1125 if (x == 0e0f ) return 0x00000000U;
1126 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1127 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1128 if (x != x ) return 0x7fbfffffU;
1129
1130 m = frexpf (x, &e) * 0x1000000U;
1131
1132 r = m & 0x80000000U;
1133
1134 if (r)
1135 m = -m;
1136
1137 if (e <= -126)
1138 {
1139 m &= 0xffffffU;
1140 m >>= (-125 - e);
1141 e = -126;
1142 }
1143
1144 r |= (e + 126) << 23;
1145 r |= m & 0x7fffffU;
1146 #endif
1147
1148 return r;
1149 }
1150
1151 /* converts an ieee single/binary32 to a float */
1152 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1153 ecb_function_ float
1154 ecb_binary32_to_float (uint32_t x)
1155 {
1156 float r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* emulation, only works for normals and subnormals and +0 */
1162 int neg = x >> 31;
1163 int e = (x >> 23) & 0xffU;
1164
1165 x &= 0x7fffffU;
1166
1167 if (e)
1168 x |= 0x800000U;
1169 else
1170 e = 1;
1171
1172 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1173 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1174
1175 r = neg ? -r : r;
1176 #endif
1177
1178 return r;
1179 }
1180
1181 /* convert a double to ieee double/binary64 */
1182 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1183 ecb_function_ uint64_t
1184 ecb_double_to_binary64 (double x)
1185 {
1186 uint64_t r;
1187
1188 #if ECB_STDFP
1189 memcpy (&r, &x, 8);
1190 #else
1191 /* slow emulation, works for anything but -0 */
1192 uint64_t m;
1193 int e;
1194
1195 if (x == 0e0 ) return 0x0000000000000000U;
1196 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1197 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1198 if (x != x ) return 0X7ff7ffffffffffffU;
1199
1200 m = frexp (x, &e) * 0x20000000000000U;
1201
1202 r = m & 0x8000000000000000;;
1203
1204 if (r)
1205 m = -m;
1206
1207 if (e <= -1022)
1208 {
1209 m &= 0x1fffffffffffffU;
1210 m >>= (-1021 - e);
1211 e = -1022;
1212 }
1213
1214 r |= ((uint64_t)(e + 1022)) << 52;
1215 r |= m & 0xfffffffffffffU;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* converts an ieee double/binary64 to a double */
1222 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1223 ecb_function_ double
1224 ecb_binary64_to_double (uint64_t x)
1225 {
1226 double r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* emulation, only works for normals and subnormals and +0 */
1232 int neg = x >> 63;
1233 int e = (x >> 52) & 0x7ffU;
1234
1235 x &= 0xfffffffffffffU;
1236
1237 if (e)
1238 x |= 0x10000000000000U;
1239 else
1240 e = 1;
1241
1242 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1243 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1244
1245 r = neg ? -r : r;
1246 #endif
1247
1248 return r;
1249 }
1250
1251#endif
1252
1253#endif
1254
1255/* ECB.H END */
1256
1257#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1258/* if your architecture doesn't need memory fences, e.g. because it is
1259 * single-cpu/core, or if you use libev in a project that doesn't use libev
1260 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1261 * libev, in which cases the memory fences become nops.
1262 * alternatively, you can remove this #error and link against libpthread,
1263 * which will then provide the memory fences.
1264 */
1265# error "memory fences not defined for your architecture, please report"
1266#endif
1267
1268#ifndef ECB_MEMORY_FENCE
1269# define ECB_MEMORY_FENCE do { } while (0)
1270# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1271# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1272#endif
1273
1274#define expect_false(cond) ecb_expect_false (cond)
1275#define expect_true(cond) ecb_expect_true (cond)
1276#define noinline ecb_noinline
1277
475#define inline_size static inline 1278#define inline_size ecb_inline
476 1279
477#if EV_FEATURE_CODE 1280#if EV_FEATURE_CODE
478# define inline_speed static inline 1281# define inline_speed ecb_inline
479#else 1282#else
480# define inline_speed static noinline 1283# define inline_speed static noinline
481#endif 1284#endif
482 1285
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1286#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
522# include "ev_win32.c" 1325# include "ev_win32.c"
523#endif 1326#endif
524 1327
525/*****************************************************************************/ 1328/*****************************************************************************/
526 1329
1330/* define a suitable floor function (only used by periodics atm) */
1331
1332#if EV_USE_FLOOR
1333# include <math.h>
1334# define ev_floor(v) floor (v)
1335#else
1336
1337#include <float.h>
1338
1339/* a floor() replacement function, should be independent of ev_tstamp type */
1340static ev_tstamp noinline
1341ev_floor (ev_tstamp v)
1342{
1343 /* the choice of shift factor is not terribly important */
1344#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1345 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1346#else
1347 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1348#endif
1349
1350 /* argument too large for an unsigned long? */
1351 if (expect_false (v >= shift))
1352 {
1353 ev_tstamp f;
1354
1355 if (v == v - 1.)
1356 return v; /* very large number */
1357
1358 f = shift * ev_floor (v * (1. / shift));
1359 return f + ev_floor (v - f);
1360 }
1361
1362 /* special treatment for negative args? */
1363 if (expect_false (v < 0.))
1364 {
1365 ev_tstamp f = -ev_floor (-v);
1366
1367 return f - (f == v ? 0 : 1);
1368 }
1369
1370 /* fits into an unsigned long */
1371 return (unsigned long)v;
1372}
1373
1374#endif
1375
1376/*****************************************************************************/
1377
527#ifdef __linux 1378#ifdef __linux
528# include <sys/utsname.h> 1379# include <sys/utsname.h>
529#endif 1380#endif
530 1381
531static unsigned int noinline 1382static unsigned int noinline ecb_cold
532ev_linux_version (void) 1383ev_linux_version (void)
533{ 1384{
534#ifdef __linux 1385#ifdef __linux
535 unsigned int v = 0; 1386 unsigned int v = 0;
536 struct utsname buf; 1387 struct utsname buf;
… …
565} 1416}
566 1417
567/*****************************************************************************/ 1418/*****************************************************************************/
568 1419
569#if EV_AVOID_STDIO 1420#if EV_AVOID_STDIO
570static void noinline 1421static void noinline ecb_cold
571ev_printerr (const char *msg) 1422ev_printerr (const char *msg)
572{ 1423{
573 write (STDERR_FILENO, msg, strlen (msg)); 1424 write (STDERR_FILENO, msg, strlen (msg));
574} 1425}
575#endif 1426#endif
576 1427
577static void (*syserr_cb)(const char *msg); 1428static void (*syserr_cb)(const char *msg) EV_THROW;
578 1429
579void 1430void ecb_cold
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1431ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
581{ 1432{
582 syserr_cb = cb; 1433 syserr_cb = cb;
583} 1434}
584 1435
585static void noinline 1436static void noinline ecb_cold
586ev_syserr (const char *msg) 1437ev_syserr (const char *msg)
587{ 1438{
588 if (!msg) 1439 if (!msg)
589 msg = "(libev) system error"; 1440 msg = "(libev) system error";
590 1441
… …
603 abort (); 1454 abort ();
604 } 1455 }
605} 1456}
606 1457
607static void * 1458static void *
608ev_realloc_emul (void *ptr, long size) 1459ev_realloc_emul (void *ptr, long size) EV_THROW
609{ 1460{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
613 /* some systems, notably openbsd and darwin, fail to properly 1461 /* some systems, notably openbsd and darwin, fail to properly
614 * implement realloc (x, 0) (as required by both ansi c-89 and 1462 * implement realloc (x, 0) (as required by both ansi c-89 and
615 * the single unix specification, so work around them here. 1463 * the single unix specification, so work around them here.
1464 * recently, also (at least) fedora and debian started breaking it,
1465 * despite documenting it otherwise.
616 */ 1466 */
617 1467
618 if (size) 1468 if (size)
619 return realloc (ptr, size); 1469 return realloc (ptr, size);
620 1470
621 free (ptr); 1471 free (ptr);
622 return 0; 1472 return 0;
623#endif
624} 1473}
625 1474
626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1475static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
627 1476
628void 1477void ecb_cold
629ev_set_allocator (void *(*cb)(void *ptr, long size)) 1478ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
630{ 1479{
631 alloc = cb; 1480 alloc = cb;
632} 1481}
633 1482
634inline_speed void * 1483inline_speed void *
… …
722 #undef VAR 1571 #undef VAR
723 }; 1572 };
724 #include "ev_wrap.h" 1573 #include "ev_wrap.h"
725 1574
726 static struct ev_loop default_loop_struct; 1575 static struct ev_loop default_loop_struct;
727 struct ev_loop *ev_default_loop_ptr; 1576 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
728 1577
729#else 1578#else
730 1579
731 ev_tstamp ev_rt_now; 1580 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
732 #define VAR(name,decl) static decl; 1581 #define VAR(name,decl) static decl;
733 #include "ev_vars.h" 1582 #include "ev_vars.h"
734 #undef VAR 1583 #undef VAR
735 1584
736 static int ev_default_loop_ptr; 1585 static int ev_default_loop_ptr;
… …
751 1600
752/*****************************************************************************/ 1601/*****************************************************************************/
753 1602
754#ifndef EV_HAVE_EV_TIME 1603#ifndef EV_HAVE_EV_TIME
755ev_tstamp 1604ev_tstamp
756ev_time (void) 1605ev_time (void) EV_THROW
757{ 1606{
758#if EV_USE_REALTIME 1607#if EV_USE_REALTIME
759 if (expect_true (have_realtime)) 1608 if (expect_true (have_realtime))
760 { 1609 {
761 struct timespec ts; 1610 struct timespec ts;
… …
785 return ev_time (); 1634 return ev_time ();
786} 1635}
787 1636
788#if EV_MULTIPLICITY 1637#if EV_MULTIPLICITY
789ev_tstamp 1638ev_tstamp
790ev_now (EV_P) 1639ev_now (EV_P) EV_THROW
791{ 1640{
792 return ev_rt_now; 1641 return ev_rt_now;
793} 1642}
794#endif 1643#endif
795 1644
796void 1645void
797ev_sleep (ev_tstamp delay) 1646ev_sleep (ev_tstamp delay) EV_THROW
798{ 1647{
799 if (delay > 0.) 1648 if (delay > 0.)
800 { 1649 {
801#if EV_USE_NANOSLEEP 1650#if EV_USE_NANOSLEEP
802 struct timespec ts; 1651 struct timespec ts;
803 1652
804 EV_TS_SET (ts, delay); 1653 EV_TS_SET (ts, delay);
805 nanosleep (&ts, 0); 1654 nanosleep (&ts, 0);
806#elif defined(_WIN32) 1655#elif defined _WIN32
807 Sleep ((unsigned long)(delay * 1e3)); 1656 Sleep ((unsigned long)(delay * 1e3));
808#else 1657#else
809 struct timeval tv; 1658 struct timeval tv;
810 1659
811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1660 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
830 1679
831 do 1680 do
832 ncur <<= 1; 1681 ncur <<= 1;
833 while (cnt > ncur); 1682 while (cnt > ncur);
834 1683
835 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1684 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
836 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1685 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
837 { 1686 {
838 ncur *= elem; 1687 ncur *= elem;
839 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1688 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
840 ncur = ncur - sizeof (void *) * 4; 1689 ncur = ncur - sizeof (void *) * 4;
… …
842 } 1691 }
843 1692
844 return ncur; 1693 return ncur;
845} 1694}
846 1695
847static noinline void * 1696static void * noinline ecb_cold
848array_realloc (int elem, void *base, int *cur, int cnt) 1697array_realloc (int elem, void *base, int *cur, int cnt)
849{ 1698{
850 *cur = array_nextsize (elem, *cur, cnt); 1699 *cur = array_nextsize (elem, *cur, cnt);
851 return ev_realloc (base, elem * *cur); 1700 return ev_realloc (base, elem * *cur);
852} 1701}
… …
855 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1704 memset ((void *)(base), 0, sizeof (*(base)) * (count))
856 1705
857#define array_needsize(type,base,cur,cnt,init) \ 1706#define array_needsize(type,base,cur,cnt,init) \
858 if (expect_false ((cnt) > (cur))) \ 1707 if (expect_false ((cnt) > (cur))) \
859 { \ 1708 { \
860 int ocur_ = (cur); \ 1709 int ecb_unused ocur_ = (cur); \
861 (base) = (type *)array_realloc \ 1710 (base) = (type *)array_realloc \
862 (sizeof (type), (base), &(cur), (cnt)); \ 1711 (sizeof (type), (base), &(cur), (cnt)); \
863 init ((base) + (ocur_), (cur) - ocur_); \ 1712 init ((base) + (ocur_), (cur) - ocur_); \
864 } 1713 }
865 1714
… …
883pendingcb (EV_P_ ev_prepare *w, int revents) 1732pendingcb (EV_P_ ev_prepare *w, int revents)
884{ 1733{
885} 1734}
886 1735
887void noinline 1736void noinline
888ev_feed_event (EV_P_ void *w, int revents) 1737ev_feed_event (EV_P_ void *w, int revents) EV_THROW
889{ 1738{
890 W w_ = (W)w; 1739 W w_ = (W)w;
891 int pri = ABSPRI (w_); 1740 int pri = ABSPRI (w_);
892 1741
893 if (expect_false (w_->pending)) 1742 if (expect_false (w_->pending))
… …
897 w_->pending = ++pendingcnt [pri]; 1746 w_->pending = ++pendingcnt [pri];
898 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1747 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
899 pendings [pri][w_->pending - 1].w = w_; 1748 pendings [pri][w_->pending - 1].w = w_;
900 pendings [pri][w_->pending - 1].events = revents; 1749 pendings [pri][w_->pending - 1].events = revents;
901 } 1750 }
1751
1752 pendingpri = NUMPRI - 1;
902} 1753}
903 1754
904inline_speed void 1755inline_speed void
905feed_reverse (EV_P_ W w) 1756feed_reverse (EV_P_ W w)
906{ 1757{
… …
952 if (expect_true (!anfd->reify)) 1803 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents); 1804 fd_event_nocheck (EV_A_ fd, revents);
954} 1805}
955 1806
956void 1807void
957ev_feed_fd_event (EV_P_ int fd, int revents) 1808ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
958{ 1809{
959 if (fd >= 0 && fd < anfdmax) 1810 if (fd >= 0 && fd < anfdmax)
960 fd_event_nocheck (EV_A_ fd, revents); 1811 fd_event_nocheck (EV_A_ fd, revents);
961} 1812}
962 1813
… …
965inline_size void 1816inline_size void
966fd_reify (EV_P) 1817fd_reify (EV_P)
967{ 1818{
968 int i; 1819 int i;
969 1820
1821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1822 for (i = 0; i < fdchangecnt; ++i)
1823 {
1824 int fd = fdchanges [i];
1825 ANFD *anfd = anfds + fd;
1826
1827 if (anfd->reify & EV__IOFDSET && anfd->head)
1828 {
1829 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1830
1831 if (handle != anfd->handle)
1832 {
1833 unsigned long arg;
1834
1835 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1836
1837 /* handle changed, but fd didn't - we need to do it in two steps */
1838 backend_modify (EV_A_ fd, anfd->events, 0);
1839 anfd->events = 0;
1840 anfd->handle = handle;
1841 }
1842 }
1843 }
1844#endif
1845
970 for (i = 0; i < fdchangecnt; ++i) 1846 for (i = 0; i < fdchangecnt; ++i)
971 { 1847 {
972 int fd = fdchanges [i]; 1848 int fd = fdchanges [i];
973 ANFD *anfd = anfds + fd; 1849 ANFD *anfd = anfds + fd;
974 ev_io *w; 1850 ev_io *w;
… …
976 unsigned char o_events = anfd->events; 1852 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify; 1853 unsigned char o_reify = anfd->reify;
978 1854
979 anfd->reify = 0; 1855 anfd->reify = 0;
980 1856
981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
982 if (o_reify & EV__IOFDSET)
983 {
984 unsigned long arg;
985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
988 }
989#endif
990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1857 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
992 { 1858 {
993 anfd->events = 0; 1859 anfd->events = 0;
994 1860
995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1861 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1020 fdchanges [fdchangecnt - 1] = fd; 1886 fdchanges [fdchangecnt - 1] = fd;
1021 } 1887 }
1022} 1888}
1023 1889
1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1890/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void 1891inline_speed void ecb_cold
1026fd_kill (EV_P_ int fd) 1892fd_kill (EV_P_ int fd)
1027{ 1893{
1028 ev_io *w; 1894 ev_io *w;
1029 1895
1030 while ((w = (ev_io *)anfds [fd].head)) 1896 while ((w = (ev_io *)anfds [fd].head))
… …
1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1899 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1034 } 1900 }
1035} 1901}
1036 1902
1037/* check whether the given fd is actually valid, for error recovery */ 1903/* check whether the given fd is actually valid, for error recovery */
1038inline_size int 1904inline_size int ecb_cold
1039fd_valid (int fd) 1905fd_valid (int fd)
1040{ 1906{
1041#ifdef _WIN32 1907#ifdef _WIN32
1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1908 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1043#else 1909#else
1044 return fcntl (fd, F_GETFD) != -1; 1910 return fcntl (fd, F_GETFD) != -1;
1045#endif 1911#endif
1046} 1912}
1047 1913
1048/* called on EBADF to verify fds */ 1914/* called on EBADF to verify fds */
1049static void noinline 1915static void noinline ecb_cold
1050fd_ebadf (EV_P) 1916fd_ebadf (EV_P)
1051{ 1917{
1052 int fd; 1918 int fd;
1053 1919
1054 for (fd = 0; fd < anfdmax; ++fd) 1920 for (fd = 0; fd < anfdmax; ++fd)
… …
1056 if (!fd_valid (fd) && errno == EBADF) 1922 if (!fd_valid (fd) && errno == EBADF)
1057 fd_kill (EV_A_ fd); 1923 fd_kill (EV_A_ fd);
1058} 1924}
1059 1925
1060/* called on ENOMEM in select/poll to kill some fds and retry */ 1926/* called on ENOMEM in select/poll to kill some fds and retry */
1061static void noinline 1927static void noinline ecb_cold
1062fd_enomem (EV_P) 1928fd_enomem (EV_P)
1063{ 1929{
1064 int fd; 1930 int fd;
1065 1931
1066 for (fd = anfdmax; fd--; ) 1932 for (fd = anfdmax; fd--; )
… …
1261 2127
1262/*****************************************************************************/ 2128/*****************************************************************************/
1263 2129
1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1265 2131
1266static void noinline 2132static void noinline ecb_cold
1267evpipe_init (EV_P) 2133evpipe_init (EV_P)
1268{ 2134{
1269 if (!ev_is_active (&pipe_w)) 2135 if (!ev_is_active (&pipe_w))
1270 { 2136 {
2137 int fds [2];
2138
1271# if EV_USE_EVENTFD 2139# if EV_USE_EVENTFD
2140 fds [0] = -1;
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2141 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL) 2142 if (fds [1] < 0 && errno == EINVAL)
1274 evfd = eventfd (0, 0); 2143 fds [1] = eventfd (0, 0);
1275 2144
1276 if (evfd >= 0) 2145 if (fds [1] < 0)
2146# endif
1277 { 2147 {
2148 while (pipe (fds))
2149 ev_syserr ("(libev) error creating signal/async pipe");
2150
2151 fd_intern (fds [0]);
2152 }
2153
1278 evpipe [0] = -1; 2154 evpipe [0] = fds [0];
1279 fd_intern (evfd); /* doing it twice doesn't hurt */ 2155
1280 ev_io_set (&pipe_w, evfd, EV_READ); 2156 if (evpipe [1] < 0)
2157 evpipe [1] = fds [1]; /* first call, set write fd */
2158 else
2159 {
2160 /* on subsequent calls, do not change evpipe [1] */
2161 /* so that evpipe_write can always rely on its value. */
2162 /* this branch does not do anything sensible on windows, */
2163 /* so must not be executed on windows */
2164
2165 dup2 (fds [1], evpipe [1]);
2166 close (fds [1]);
2167 }
2168
2169 fd_intern (evpipe [1]);
2170
2171 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2172 ev_io_start (EV_A_ &pipe_w);
2173 ev_unref (EV_A); /* watcher should not keep loop alive */
2174 }
2175}
2176
2177inline_speed void
2178evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2179{
2180 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2181
2182 if (expect_true (*flag))
2183 return;
2184
2185 *flag = 1;
2186 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2187
2188 pipe_write_skipped = 1;
2189
2190 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2191
2192 if (pipe_write_wanted)
2193 {
2194 int old_errno;
2195
2196 pipe_write_skipped = 0;
2197 ECB_MEMORY_FENCE_RELEASE;
2198
2199 old_errno = errno; /* save errno because write will clobber it */
2200
2201#if EV_USE_EVENTFD
2202 if (evpipe [0] < 0)
2203 {
2204 uint64_t counter = 1;
2205 write (evpipe [1], &counter, sizeof (uint64_t));
1281 } 2206 }
1282 else 2207 else
1283# endif 2208#endif
1284 { 2209 {
1285 while (pipe (evpipe)) 2210#ifdef _WIN32
1286 ev_syserr ("(libev) error creating signal/async pipe"); 2211 WSABUF buf;
1287 2212 DWORD sent;
1288 fd_intern (evpipe [0]); 2213 buf.buf = &buf;
1289 fd_intern (evpipe [1]); 2214 buf.len = 1;
1290 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2215 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2216#else
2217 write (evpipe [1], &(evpipe [1]), 1);
2218#endif
1291 } 2219 }
1292
1293 ev_io_start (EV_A_ &pipe_w);
1294 ev_unref (EV_A); /* watcher should not keep loop alive */
1295 }
1296}
1297
1298inline_size void
1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1300{
1301 if (!*flag)
1302 {
1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1305
1306 *flag = 1;
1307
1308#if EV_USE_EVENTFD
1309 if (evfd >= 0)
1310 {
1311 uint64_t counter = 1;
1312 write (evfd, &counter, sizeof (uint64_t));
1313 }
1314 else
1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1321 write (evpipe [1], &dummy, 1);
1322 2220
1323 errno = old_errno; 2221 errno = old_errno;
1324 } 2222 }
1325} 2223}
1326 2224
… …
1329static void 2227static void
1330pipecb (EV_P_ ev_io *iow, int revents) 2228pipecb (EV_P_ ev_io *iow, int revents)
1331{ 2229{
1332 int i; 2230 int i;
1333 2231
2232 if (revents & EV_READ)
2233 {
1334#if EV_USE_EVENTFD 2234#if EV_USE_EVENTFD
1335 if (evfd >= 0) 2235 if (evpipe [0] < 0)
1336 { 2236 {
1337 uint64_t counter; 2237 uint64_t counter;
1338 read (evfd, &counter, sizeof (uint64_t)); 2238 read (evpipe [1], &counter, sizeof (uint64_t));
1339 } 2239 }
1340 else 2240 else
1341#endif 2241#endif
1342 { 2242 {
1343 char dummy; 2243 char dummy[4];
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2244#ifdef _WIN32
2245 WSABUF buf;
2246 DWORD recvd;
2247 DWORD flags = 0;
2248 buf.buf = dummy;
2249 buf.len = sizeof (dummy);
2250 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2251#else
1345 read (evpipe [0], &dummy, 1); 2252 read (evpipe [0], &dummy, sizeof (dummy));
2253#endif
2254 }
1346 } 2255 }
1347 2256
2257 pipe_write_skipped = 0;
2258
2259 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2260
2261#if EV_SIGNAL_ENABLE
1348 if (sig_pending) 2262 if (sig_pending)
1349 { 2263 {
1350 sig_pending = 0; 2264 sig_pending = 0;
2265
2266 ECB_MEMORY_FENCE;
1351 2267
1352 for (i = EV_NSIG - 1; i--; ) 2268 for (i = EV_NSIG - 1; i--; )
1353 if (expect_false (signals [i].pending)) 2269 if (expect_false (signals [i].pending))
1354 ev_feed_signal_event (EV_A_ i + 1); 2270 ev_feed_signal_event (EV_A_ i + 1);
1355 } 2271 }
2272#endif
1356 2273
1357#if EV_ASYNC_ENABLE 2274#if EV_ASYNC_ENABLE
1358 if (async_pending) 2275 if (async_pending)
1359 { 2276 {
1360 async_pending = 0; 2277 async_pending = 0;
2278
2279 ECB_MEMORY_FENCE;
1361 2280
1362 for (i = asynccnt; i--; ) 2281 for (i = asynccnt; i--; )
1363 if (asyncs [i]->sent) 2282 if (asyncs [i]->sent)
1364 { 2283 {
1365 asyncs [i]->sent = 0; 2284 asyncs [i]->sent = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1366 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2286 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1367 } 2287 }
1368 } 2288 }
1369#endif 2289#endif
1370} 2290}
1371 2291
1372/*****************************************************************************/ 2292/*****************************************************************************/
1373 2293
1374void 2294void
1375ev_feed_signal (int signum) 2295ev_feed_signal (int signum) EV_THROW
1376{ 2296{
1377#if EV_MULTIPLICITY 2297#if EV_MULTIPLICITY
2298 EV_P;
2299 ECB_MEMORY_FENCE_ACQUIRE;
1378 EV_P = signals [signum - 1].loop; 2300 EV_A = signals [signum - 1].loop;
1379 2301
1380 if (!EV_A) 2302 if (!EV_A)
1381 return; 2303 return;
1382#endif 2304#endif
1383 2305
… …
1394 2316
1395 ev_feed_signal (signum); 2317 ev_feed_signal (signum);
1396} 2318}
1397 2319
1398void noinline 2320void noinline
1399ev_feed_signal_event (EV_P_ int signum) 2321ev_feed_signal_event (EV_P_ int signum) EV_THROW
1400{ 2322{
1401 WL w; 2323 WL w;
1402 2324
1403 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2325 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1404 return; 2326 return;
1405 2327
1406 --signum; 2328 --signum;
1407 2329
1408#if EV_MULTIPLICITY 2330#if EV_MULTIPLICITY
… …
1412 if (expect_false (signals [signum].loop != EV_A)) 2334 if (expect_false (signals [signum].loop != EV_A))
1413 return; 2335 return;
1414#endif 2336#endif
1415 2337
1416 signals [signum].pending = 0; 2338 signals [signum].pending = 0;
2339 ECB_MEMORY_FENCE_RELEASE;
1417 2340
1418 for (w = signals [signum].head; w; w = w->next) 2341 for (w = signals [signum].head; w; w = w->next)
1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2342 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1420} 2343}
1421 2344
… …
1519#endif 2442#endif
1520#if EV_USE_SELECT 2443#if EV_USE_SELECT
1521# include "ev_select.c" 2444# include "ev_select.c"
1522#endif 2445#endif
1523 2446
1524int 2447int ecb_cold
1525ev_version_major (void) 2448ev_version_major (void) EV_THROW
1526{ 2449{
1527 return EV_VERSION_MAJOR; 2450 return EV_VERSION_MAJOR;
1528} 2451}
1529 2452
1530int 2453int ecb_cold
1531ev_version_minor (void) 2454ev_version_minor (void) EV_THROW
1532{ 2455{
1533 return EV_VERSION_MINOR; 2456 return EV_VERSION_MINOR;
1534} 2457}
1535 2458
1536/* return true if we are running with elevated privileges and should ignore env variables */ 2459/* return true if we are running with elevated privileges and should ignore env variables */
1537int inline_size 2460int inline_size ecb_cold
1538enable_secure (void) 2461enable_secure (void)
1539{ 2462{
1540#ifdef _WIN32 2463#ifdef _WIN32
1541 return 0; 2464 return 0;
1542#else 2465#else
1543 return getuid () != geteuid () 2466 return getuid () != geteuid ()
1544 || getgid () != getegid (); 2467 || getgid () != getegid ();
1545#endif 2468#endif
1546} 2469}
1547 2470
1548unsigned int 2471unsigned int ecb_cold
1549ev_supported_backends (void) 2472ev_supported_backends (void) EV_THROW
1550{ 2473{
1551 unsigned int flags = 0; 2474 unsigned int flags = 0;
1552 2475
1553 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2476 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1554 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2477 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1557 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2480 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1558 2481
1559 return flags; 2482 return flags;
1560} 2483}
1561 2484
1562unsigned int 2485unsigned int ecb_cold
1563ev_recommended_backends (void) 2486ev_recommended_backends (void) EV_THROW
1564{ 2487{
1565 unsigned int flags = ev_supported_backends (); 2488 unsigned int flags = ev_supported_backends ();
1566 2489
1567#ifndef __NetBSD__ 2490#ifndef __NetBSD__
1568 /* kqueue is borked on everything but netbsd apparently */ 2491 /* kqueue is borked on everything but netbsd apparently */
… …
1579#endif 2502#endif
1580 2503
1581 return flags; 2504 return flags;
1582} 2505}
1583 2506
1584unsigned int 2507unsigned int ecb_cold
1585ev_embeddable_backends (void) 2508ev_embeddable_backends (void) EV_THROW
1586{ 2509{
1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2510 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1588 2511
1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2512 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2513 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1592 2515
1593 return flags; 2516 return flags;
1594} 2517}
1595 2518
1596unsigned int 2519unsigned int
1597ev_backend (EV_P) 2520ev_backend (EV_P) EV_THROW
1598{ 2521{
1599 return backend; 2522 return backend;
1600} 2523}
1601 2524
1602#if EV_FEATURE_API 2525#if EV_FEATURE_API
1603unsigned int 2526unsigned int
1604ev_iteration (EV_P) 2527ev_iteration (EV_P) EV_THROW
1605{ 2528{
1606 return loop_count; 2529 return loop_count;
1607} 2530}
1608 2531
1609unsigned int 2532unsigned int
1610ev_depth (EV_P) 2533ev_depth (EV_P) EV_THROW
1611{ 2534{
1612 return loop_depth; 2535 return loop_depth;
1613} 2536}
1614 2537
1615void 2538void
1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2539ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1617{ 2540{
1618 io_blocktime = interval; 2541 io_blocktime = interval;
1619} 2542}
1620 2543
1621void 2544void
1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2545ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1623{ 2546{
1624 timeout_blocktime = interval; 2547 timeout_blocktime = interval;
1625} 2548}
1626 2549
1627void 2550void
1628ev_set_userdata (EV_P_ void *data) 2551ev_set_userdata (EV_P_ void *data) EV_THROW
1629{ 2552{
1630 userdata = data; 2553 userdata = data;
1631} 2554}
1632 2555
1633void * 2556void *
1634ev_userdata (EV_P) 2557ev_userdata (EV_P) EV_THROW
1635{ 2558{
1636 return userdata; 2559 return userdata;
1637} 2560}
1638 2561
2562void
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2563ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1640{ 2564{
1641 invoke_cb = invoke_pending_cb; 2565 invoke_cb = invoke_pending_cb;
1642} 2566}
1643 2567
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2568void
2569ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1645{ 2570{
1646 release_cb = release; 2571 release_cb = release;
1647 acquire_cb = acquire; 2572 acquire_cb = acquire;
1648} 2573}
1649#endif 2574#endif
1650 2575
1651/* initialise a loop structure, must be zero-initialised */ 2576/* initialise a loop structure, must be zero-initialised */
1652static void noinline 2577static void noinline ecb_cold
1653loop_init (EV_P_ unsigned int flags) 2578loop_init (EV_P_ unsigned int flags) EV_THROW
1654{ 2579{
1655 if (!backend) 2580 if (!backend)
1656 { 2581 {
1657 origflags = flags; 2582 origflags = flags;
1658 2583
… …
1685 if (!(flags & EVFLAG_NOENV) 2610 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure () 2611 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS")) 2612 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS")); 2613 flags = atoi (getenv ("LIBEV_FLAGS"));
1689 2614
1690 ev_rt_now = ev_time (); 2615 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2616 mn_now = get_clock ();
1692 now_floor = mn_now; 2617 now_floor = mn_now;
1693 rtmn_diff = ev_rt_now - mn_now; 2618 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API 2619#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending; 2620 invoke_cb = ev_invoke_pending;
1696#endif 2621#endif
1697 2622
1698 io_blocktime = 0.; 2623 io_blocktime = 0.;
1699 timeout_blocktime = 0.; 2624 timeout_blocktime = 0.;
1700 backend = 0; 2625 backend = 0;
1701 backend_fd = -1; 2626 backend_fd = -1;
1702 sig_pending = 0; 2627 sig_pending = 0;
1703#if EV_ASYNC_ENABLE 2628#if EV_ASYNC_ENABLE
1704 async_pending = 0; 2629 async_pending = 0;
1705#endif 2630#endif
2631 pipe_write_skipped = 0;
2632 pipe_write_wanted = 0;
2633 evpipe [0] = -1;
2634 evpipe [1] = -1;
1706#if EV_USE_INOTIFY 2635#if EV_USE_INOTIFY
1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1708#endif 2637#endif
1709#if EV_USE_SIGNALFD 2638#if EV_USE_SIGNALFD
1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1711#endif 2640#endif
1712 2641
1713 if (!(flags & EVBACKEND_MASK)) 2642 if (!(flags & EVBACKEND_MASK))
1714 flags |= ev_recommended_backends (); 2643 flags |= ev_recommended_backends ();
1715 2644
… …
1740#endif 2669#endif
1741 } 2670 }
1742} 2671}
1743 2672
1744/* free up a loop structure */ 2673/* free up a loop structure */
1745void 2674void ecb_cold
1746ev_loop_destroy (EV_P) 2675ev_loop_destroy (EV_P)
1747{ 2676{
1748 int i; 2677 int i;
1749 2678
1750#if EV_MULTIPLICITY 2679#if EV_MULTIPLICITY
… …
1761 EV_INVOKE_PENDING; 2690 EV_INVOKE_PENDING;
1762 } 2691 }
1763#endif 2692#endif
1764 2693
1765#if EV_CHILD_ENABLE 2694#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev)) 2695 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1767 { 2696 {
1768 ev_ref (EV_A); /* child watcher */ 2697 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev); 2698 ev_signal_stop (EV_A_ &childev);
1770 } 2699 }
1771#endif 2700#endif
… …
1773 if (ev_is_active (&pipe_w)) 2702 if (ev_is_active (&pipe_w))
1774 { 2703 {
1775 /*ev_ref (EV_A);*/ 2704 /*ev_ref (EV_A);*/
1776 /*ev_io_stop (EV_A_ &pipe_w);*/ 2705 /*ev_io_stop (EV_A_ &pipe_w);*/
1777 2706
1778#if EV_USE_EVENTFD
1779 if (evfd >= 0)
1780 close (evfd);
1781#endif
1782
1783 if (evpipe [0] >= 0)
1784 {
1785 EV_WIN32_CLOSE_FD (evpipe [0]); 2707 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1786 EV_WIN32_CLOSE_FD (evpipe [1]); 2708 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1787 }
1788 } 2709 }
1789 2710
1790#if EV_USE_SIGNALFD 2711#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w)) 2712 if (ev_is_active (&sigfd_w))
1792 close (sigfd); 2713 close (sigfd);
… …
1878#endif 2799#endif
1879#if EV_USE_INOTIFY 2800#if EV_USE_INOTIFY
1880 infy_fork (EV_A); 2801 infy_fork (EV_A);
1881#endif 2802#endif
1882 2803
2804#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1883 if (ev_is_active (&pipe_w)) 2805 if (ev_is_active (&pipe_w))
1884 { 2806 {
1885 /* this "locks" the handlers against writing to the pipe */ 2807 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1886 /* while we modify the fd vars */
1887 sig_pending = 1;
1888#if EV_ASYNC_ENABLE
1889 async_pending = 1;
1890#endif
1891 2808
1892 ev_ref (EV_A); 2809 ev_ref (EV_A);
1893 ev_io_stop (EV_A_ &pipe_w); 2810 ev_io_stop (EV_A_ &pipe_w);
1894 2811
1895#if EV_USE_EVENTFD
1896 if (evfd >= 0)
1897 close (evfd);
1898#endif
1899
1900 if (evpipe [0] >= 0) 2812 if (evpipe [0] >= 0)
1901 {
1902 EV_WIN32_CLOSE_FD (evpipe [0]); 2813 EV_WIN32_CLOSE_FD (evpipe [0]);
1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1904 }
1905 2814
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1907 evpipe_init (EV_A); 2815 evpipe_init (EV_A);
1908 /* now iterate over everything, in case we missed something */ 2816 /* iterate over everything, in case we missed something before */
1909 pipecb (EV_A_ &pipe_w, EV_READ); 2817 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1910#endif
1911 } 2818 }
2819#endif
1912 2820
1913 postfork = 0; 2821 postfork = 0;
1914} 2822}
1915 2823
1916#if EV_MULTIPLICITY 2824#if EV_MULTIPLICITY
1917 2825
1918struct ev_loop * 2826struct ev_loop * ecb_cold
1919ev_loop_new (unsigned int flags) 2827ev_loop_new (unsigned int flags) EV_THROW
1920{ 2828{
1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2829 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1922 2830
1923 memset (EV_A, 0, sizeof (struct ev_loop)); 2831 memset (EV_A, 0, sizeof (struct ev_loop));
1924 loop_init (EV_A_ flags); 2832 loop_init (EV_A_ flags);
… …
1931} 2839}
1932 2840
1933#endif /* multiplicity */ 2841#endif /* multiplicity */
1934 2842
1935#if EV_VERIFY 2843#if EV_VERIFY
1936static void noinline 2844static void noinline ecb_cold
1937verify_watcher (EV_P_ W w) 2845verify_watcher (EV_P_ W w)
1938{ 2846{
1939 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1940 2848
1941 if (w->pending) 2849 if (w->pending)
1942 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1943} 2851}
1944 2852
1945static void noinline 2853static void noinline ecb_cold
1946verify_heap (EV_P_ ANHE *heap, int N) 2854verify_heap (EV_P_ ANHE *heap, int N)
1947{ 2855{
1948 int i; 2856 int i;
1949 2857
1950 for (i = HEAP0; i < N + HEAP0; ++i) 2858 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1955 2863
1956 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2864 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1957 } 2865 }
1958} 2866}
1959 2867
1960static void noinline 2868static void noinline ecb_cold
1961array_verify (EV_P_ W *ws, int cnt) 2869array_verify (EV_P_ W *ws, int cnt)
1962{ 2870{
1963 while (cnt--) 2871 while (cnt--)
1964 { 2872 {
1965 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1967 } 2875 }
1968} 2876}
1969#endif 2877#endif
1970 2878
1971#if EV_FEATURE_API 2879#if EV_FEATURE_API
1972void 2880void ecb_cold
1973ev_verify (EV_P) 2881ev_verify (EV_P) EV_THROW
1974{ 2882{
1975#if EV_VERIFY 2883#if EV_VERIFY
1976 int i; 2884 int i;
1977 WL w; 2885 WL w, w2;
1978 2886
1979 assert (activecnt >= -1); 2887 assert (activecnt >= -1);
1980 2888
1981 assert (fdchangemax >= fdchangecnt); 2889 assert (fdchangemax >= fdchangecnt);
1982 for (i = 0; i < fdchangecnt; ++i) 2890 for (i = 0; i < fdchangecnt; ++i)
1983 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1984 2892
1985 assert (anfdmax >= 0); 2893 assert (anfdmax >= 0);
1986 for (i = 0; i < anfdmax; ++i) 2894 for (i = 0; i < anfdmax; ++i)
2895 {
2896 int j = 0;
2897
1987 for (w = anfds [i].head; w; w = w->next) 2898 for (w = w2 = anfds [i].head; w; w = w->next)
1988 { 2899 {
1989 verify_watcher (EV_A_ (W)w); 2900 verify_watcher (EV_A_ (W)w);
2901
2902 if (j++ & 1)
2903 {
2904 assert (("libev: io watcher list contains a loop", w != w2));
2905 w2 = w2->next;
2906 }
2907
1990 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2908 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1991 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2909 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1992 } 2910 }
2911 }
1993 2912
1994 assert (timermax >= timercnt); 2913 assert (timermax >= timercnt);
1995 verify_heap (EV_A_ timers, timercnt); 2914 verify_heap (EV_A_ timers, timercnt);
1996 2915
1997#if EV_PERIODIC_ENABLE 2916#if EV_PERIODIC_ENABLE
… …
2043#endif 2962#endif
2044} 2963}
2045#endif 2964#endif
2046 2965
2047#if EV_MULTIPLICITY 2966#if EV_MULTIPLICITY
2048struct ev_loop * 2967struct ev_loop * ecb_cold
2049#else 2968#else
2050int 2969int
2051#endif 2970#endif
2052ev_default_loop (unsigned int flags) 2971ev_default_loop (unsigned int flags) EV_THROW
2053{ 2972{
2054 if (!ev_default_loop_ptr) 2973 if (!ev_default_loop_ptr)
2055 { 2974 {
2056#if EV_MULTIPLICITY 2975#if EV_MULTIPLICITY
2057 EV_P = ev_default_loop_ptr = &default_loop_struct; 2976 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2076 2995
2077 return ev_default_loop_ptr; 2996 return ev_default_loop_ptr;
2078} 2997}
2079 2998
2080void 2999void
2081ev_loop_fork (EV_P) 3000ev_loop_fork (EV_P) EV_THROW
2082{ 3001{
2083 postfork = 1; /* must be in line with ev_default_fork */ 3002 postfork = 1;
2084} 3003}
2085 3004
2086/*****************************************************************************/ 3005/*****************************************************************************/
2087 3006
2088void 3007void
… …
2090{ 3009{
2091 EV_CB_INVOKE ((W)w, revents); 3010 EV_CB_INVOKE ((W)w, revents);
2092} 3011}
2093 3012
2094unsigned int 3013unsigned int
2095ev_pending_count (EV_P) 3014ev_pending_count (EV_P) EV_THROW
2096{ 3015{
2097 int pri; 3016 int pri;
2098 unsigned int count = 0; 3017 unsigned int count = 0;
2099 3018
2100 for (pri = NUMPRI; pri--; ) 3019 for (pri = NUMPRI; pri--; )
… …
2104} 3023}
2105 3024
2106void noinline 3025void noinline
2107ev_invoke_pending (EV_P) 3026ev_invoke_pending (EV_P)
2108{ 3027{
2109 int pri; 3028 pendingpri = NUMPRI;
2110 3029
2111 for (pri = NUMPRI; pri--; ) 3030 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3031 {
3032 --pendingpri;
3033
2112 while (pendingcnt [pri]) 3034 while (pendingcnt [pendingpri])
2113 { 3035 {
2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3036 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2115 3037
2116 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2117 /* ^ this is no longer true, as pending_w could be here */
2118
2119 p->w->pending = 0; 3038 p->w->pending = 0;
2120 EV_CB_INVOKE (p->w, p->events); 3039 EV_CB_INVOKE (p->w, p->events);
2121 EV_FREQUENT_CHECK; 3040 EV_FREQUENT_CHECK;
2122 } 3041 }
3042 }
2123} 3043}
2124 3044
2125#if EV_IDLE_ENABLE 3045#if EV_IDLE_ENABLE
2126/* make idle watchers pending. this handles the "call-idle */ 3046/* make idle watchers pending. this handles the "call-idle */
2127/* only when higher priorities are idle" logic */ 3047/* only when higher priorities are idle" logic */
… …
2184 feed_reverse_done (EV_A_ EV_TIMER); 3104 feed_reverse_done (EV_A_ EV_TIMER);
2185 } 3105 }
2186} 3106}
2187 3107
2188#if EV_PERIODIC_ENABLE 3108#if EV_PERIODIC_ENABLE
3109
3110static void noinline
3111periodic_recalc (EV_P_ ev_periodic *w)
3112{
3113 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3114 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3115
3116 /* the above almost always errs on the low side */
3117 while (at <= ev_rt_now)
3118 {
3119 ev_tstamp nat = at + w->interval;
3120
3121 /* when resolution fails us, we use ev_rt_now */
3122 if (expect_false (nat == at))
3123 {
3124 at = ev_rt_now;
3125 break;
3126 }
3127
3128 at = nat;
3129 }
3130
3131 ev_at (w) = at;
3132}
3133
2189/* make periodics pending */ 3134/* make periodics pending */
2190inline_size void 3135inline_size void
2191periodics_reify (EV_P) 3136periodics_reify (EV_P)
2192{ 3137{
2193 EV_FREQUENT_CHECK; 3138 EV_FREQUENT_CHECK;
2194 3139
2195 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3140 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2196 { 3141 {
2197 int feed_count = 0;
2198
2199 do 3142 do
2200 { 3143 {
2201 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2202 3145
2203 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2212 ANHE_at_cache (periodics [HEAP0]); 3155 ANHE_at_cache (periodics [HEAP0]);
2213 downheap (periodics, periodiccnt, HEAP0); 3156 downheap (periodics, periodiccnt, HEAP0);
2214 } 3157 }
2215 else if (w->interval) 3158 else if (w->interval)
2216 { 3159 {
2217 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3160 periodic_recalc (EV_A_ w);
2218 /* if next trigger time is not sufficiently in the future, put it there */
2219 /* this might happen because of floating point inexactness */
2220 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2221 {
2222 ev_at (w) += w->interval;
2223
2224 /* if interval is unreasonably low we might still have a time in the past */
2225 /* so correct this. this will make the periodic very inexact, but the user */
2226 /* has effectively asked to get triggered more often than possible */
2227 if (ev_at (w) < ev_rt_now)
2228 ev_at (w) = ev_rt_now;
2229 }
2230
2231 ANHE_at_cache (periodics [HEAP0]); 3161 ANHE_at_cache (periodics [HEAP0]);
2232 downheap (periodics, periodiccnt, HEAP0); 3162 downheap (periodics, periodiccnt, HEAP0);
2233 } 3163 }
2234 else 3164 else
2235 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2243 } 3173 }
2244} 3174}
2245 3175
2246/* simply recalculate all periodics */ 3176/* simply recalculate all periodics */
2247/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3177/* TODO: maybe ensure that at least one event happens when jumping forward? */
2248static void noinline 3178static void noinline ecb_cold
2249periodics_reschedule (EV_P) 3179periodics_reschedule (EV_P)
2250{ 3180{
2251 int i; 3181 int i;
2252 3182
2253 /* adjust periodics after time jump */ 3183 /* adjust periodics after time jump */
… …
2256 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2257 3187
2258 if (w->reschedule_cb) 3188 if (w->reschedule_cb)
2259 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2260 else if (w->interval) 3190 else if (w->interval)
2261 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3191 periodic_recalc (EV_A_ w);
2262 3192
2263 ANHE_at_cache (periodics [i]); 3193 ANHE_at_cache (periodics [i]);
2264 } 3194 }
2265 3195
2266 reheap (periodics, periodiccnt); 3196 reheap (periodics, periodiccnt);
2267} 3197}
2268#endif 3198#endif
2269 3199
2270/* adjust all timers by a given offset */ 3200/* adjust all timers by a given offset */
2271static void noinline 3201static void noinline ecb_cold
2272timers_reschedule (EV_P_ ev_tstamp adjust) 3202timers_reschedule (EV_P_ ev_tstamp adjust)
2273{ 3203{
2274 int i; 3204 int i;
2275 3205
2276 for (i = 0; i < timercnt; ++i) 3206 for (i = 0; i < timercnt; ++i)
… …
2313 * doesn't hurt either as we only do this on time-jumps or 3243 * doesn't hurt either as we only do this on time-jumps or
2314 * in the unlikely event of having been preempted here. 3244 * in the unlikely event of having been preempted here.
2315 */ 3245 */
2316 for (i = 4; --i; ) 3246 for (i = 4; --i; )
2317 { 3247 {
3248 ev_tstamp diff;
2318 rtmn_diff = ev_rt_now - mn_now; 3249 rtmn_diff = ev_rt_now - mn_now;
2319 3250
3251 diff = odiff - rtmn_diff;
3252
2320 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3253 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2321 return; /* all is well */ 3254 return; /* all is well */
2322 3255
2323 ev_rt_now = ev_time (); 3256 ev_rt_now = ev_time ();
2324 mn_now = get_clock (); 3257 mn_now = get_clock ();
2325 now_floor = mn_now; 3258 now_floor = mn_now;
… …
2347 3280
2348 mn_now = ev_rt_now; 3281 mn_now = ev_rt_now;
2349 } 3282 }
2350} 3283}
2351 3284
2352void 3285int
2353ev_run (EV_P_ int flags) 3286ev_run (EV_P_ int flags)
2354{ 3287{
2355#if EV_FEATURE_API 3288#if EV_FEATURE_API
2356 ++loop_depth; 3289 ++loop_depth;
2357#endif 3290#endif
… …
2415 ev_tstamp prev_mn_now = mn_now; 3348 ev_tstamp prev_mn_now = mn_now;
2416 3349
2417 /* update time to cancel out callback processing overhead */ 3350 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100); 3351 time_update (EV_A_ 1e100);
2419 3352
3353 /* from now on, we want a pipe-wake-up */
3354 pipe_write_wanted = 1;
3355
3356 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3357
2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3358 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2421 { 3359 {
2422 waittime = MAX_BLOCKTIME; 3360 waittime = MAX_BLOCKTIME;
2423 3361
2424 if (timercnt) 3362 if (timercnt)
2425 { 3363 {
2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3364 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2427 if (waittime > to) waittime = to; 3365 if (waittime > to) waittime = to;
2428 } 3366 }
2429 3367
2430#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
2431 if (periodiccnt) 3369 if (periodiccnt)
2432 { 3370 {
2433 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3371 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2434 if (waittime > to) waittime = to; 3372 if (waittime > to) waittime = to;
2435 } 3373 }
2436#endif 3374#endif
2437 3375
2438 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3376 /* don't let timeouts decrease the waittime below timeout_blocktime */
2439 if (expect_false (waittime < timeout_blocktime)) 3377 if (expect_false (waittime < timeout_blocktime))
2440 waittime = timeout_blocktime; 3378 waittime = timeout_blocktime;
3379
3380 /* at this point, we NEED to wait, so we have to ensure */
3381 /* to pass a minimum nonzero value to the backend */
3382 if (expect_false (waittime < backend_mintime))
3383 waittime = backend_mintime;
2441 3384
2442 /* extra check because io_blocktime is commonly 0 */ 3385 /* extra check because io_blocktime is commonly 0 */
2443 if (expect_false (io_blocktime)) 3386 if (expect_false (io_blocktime))
2444 { 3387 {
2445 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3388 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2446 3389
2447 if (sleeptime > waittime - backend_fudge) 3390 if (sleeptime > waittime - backend_mintime)
2448 sleeptime = waittime - backend_fudge; 3391 sleeptime = waittime - backend_mintime;
2449 3392
2450 if (expect_true (sleeptime > 0.)) 3393 if (expect_true (sleeptime > 0.))
2451 { 3394 {
2452 ev_sleep (sleeptime); 3395 ev_sleep (sleeptime);
2453 waittime -= sleeptime; 3396 waittime -= sleeptime;
… …
2460#endif 3403#endif
2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3404 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2462 backend_poll (EV_A_ waittime); 3405 backend_poll (EV_A_ waittime);
2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3406 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2464 3407
3408 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3409
3410 ECB_MEMORY_FENCE_ACQUIRE;
3411 if (pipe_write_skipped)
3412 {
3413 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3414 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3415 }
3416
3417
2465 /* update ev_rt_now, do magic */ 3418 /* update ev_rt_now, do magic */
2466 time_update (EV_A_ waittime + sleeptime); 3419 time_update (EV_A_ waittime + sleeptime);
2467 } 3420 }
2468 3421
2469 /* queue pending timers and reschedule them */ 3422 /* queue pending timers and reschedule them */
… …
2495 loop_done = EVBREAK_CANCEL; 3448 loop_done = EVBREAK_CANCEL;
2496 3449
2497#if EV_FEATURE_API 3450#if EV_FEATURE_API
2498 --loop_depth; 3451 --loop_depth;
2499#endif 3452#endif
3453
3454 return activecnt;
2500} 3455}
2501 3456
2502void 3457void
2503ev_break (EV_P_ int how) 3458ev_break (EV_P_ int how) EV_THROW
2504{ 3459{
2505 loop_done = how; 3460 loop_done = how;
2506} 3461}
2507 3462
2508void 3463void
2509ev_ref (EV_P) 3464ev_ref (EV_P) EV_THROW
2510{ 3465{
2511 ++activecnt; 3466 ++activecnt;
2512} 3467}
2513 3468
2514void 3469void
2515ev_unref (EV_P) 3470ev_unref (EV_P) EV_THROW
2516{ 3471{
2517 --activecnt; 3472 --activecnt;
2518} 3473}
2519 3474
2520void 3475void
2521ev_now_update (EV_P) 3476ev_now_update (EV_P) EV_THROW
2522{ 3477{
2523 time_update (EV_A_ 1e100); 3478 time_update (EV_A_ 1e100);
2524} 3479}
2525 3480
2526void 3481void
2527ev_suspend (EV_P) 3482ev_suspend (EV_P) EV_THROW
2528{ 3483{
2529 ev_now_update (EV_A); 3484 ev_now_update (EV_A);
2530} 3485}
2531 3486
2532void 3487void
2533ev_resume (EV_P) 3488ev_resume (EV_P) EV_THROW
2534{ 3489{
2535 ev_tstamp mn_prev = mn_now; 3490 ev_tstamp mn_prev = mn_now;
2536 3491
2537 ev_now_update (EV_A); 3492 ev_now_update (EV_A);
2538 timers_reschedule (EV_A_ mn_now - mn_prev); 3493 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2577 w->pending = 0; 3532 w->pending = 0;
2578 } 3533 }
2579} 3534}
2580 3535
2581int 3536int
2582ev_clear_pending (EV_P_ void *w) 3537ev_clear_pending (EV_P_ void *w) EV_THROW
2583{ 3538{
2584 W w_ = (W)w; 3539 W w_ = (W)w;
2585 int pending = w_->pending; 3540 int pending = w_->pending;
2586 3541
2587 if (expect_true (pending)) 3542 if (expect_true (pending))
… …
2620} 3575}
2621 3576
2622/*****************************************************************************/ 3577/*****************************************************************************/
2623 3578
2624void noinline 3579void noinline
2625ev_io_start (EV_P_ ev_io *w) 3580ev_io_start (EV_P_ ev_io *w) EV_THROW
2626{ 3581{
2627 int fd = w->fd; 3582 int fd = w->fd;
2628 3583
2629 if (expect_false (ev_is_active (w))) 3584 if (expect_false (ev_is_active (w)))
2630 return; 3585 return;
… …
2636 3591
2637 ev_start (EV_A_ (W)w, 1); 3592 ev_start (EV_A_ (W)w, 1);
2638 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3593 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2639 wlist_add (&anfds[fd].head, (WL)w); 3594 wlist_add (&anfds[fd].head, (WL)w);
2640 3595
3596 /* common bug, apparently */
3597 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3598
2641 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3599 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2642 w->events &= ~EV__IOFDSET; 3600 w->events &= ~EV__IOFDSET;
2643 3601
2644 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2645} 3603}
2646 3604
2647void noinline 3605void noinline
2648ev_io_stop (EV_P_ ev_io *w) 3606ev_io_stop (EV_P_ ev_io *w) EV_THROW
2649{ 3607{
2650 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2651 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2652 return; 3610 return;
2653 3611
… …
2662 3620
2663 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2664} 3622}
2665 3623
2666void noinline 3624void noinline
2667ev_timer_start (EV_P_ ev_timer *w) 3625ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2668{ 3626{
2669 if (expect_false (ev_is_active (w))) 3627 if (expect_false (ev_is_active (w)))
2670 return; 3628 return;
2671 3629
2672 ev_at (w) += mn_now; 3630 ev_at (w) += mn_now;
… …
2686 3644
2687 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3645 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2688} 3646}
2689 3647
2690void noinline 3648void noinline
2691ev_timer_stop (EV_P_ ev_timer *w) 3649ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2692{ 3650{
2693 clear_pending (EV_A_ (W)w); 3651 clear_pending (EV_A_ (W)w);
2694 if (expect_false (!ev_is_active (w))) 3652 if (expect_false (!ev_is_active (w)))
2695 return; 3653 return;
2696 3654
… …
2716 3674
2717 EV_FREQUENT_CHECK; 3675 EV_FREQUENT_CHECK;
2718} 3676}
2719 3677
2720void noinline 3678void noinline
2721ev_timer_again (EV_P_ ev_timer *w) 3679ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2722{ 3680{
2723 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
3682
3683 clear_pending (EV_A_ (W)w);
2724 3684
2725 if (ev_is_active (w)) 3685 if (ev_is_active (w))
2726 { 3686 {
2727 if (w->repeat) 3687 if (w->repeat)
2728 { 3688 {
… …
2741 3701
2742 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2743} 3703}
2744 3704
2745ev_tstamp 3705ev_tstamp
2746ev_timer_remaining (EV_P_ ev_timer *w) 3706ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2747{ 3707{
2748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3708 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2749} 3709}
2750 3710
2751#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2752void noinline 3712void noinline
2753ev_periodic_start (EV_P_ ev_periodic *w) 3713ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2754{ 3714{
2755 if (expect_false (ev_is_active (w))) 3715 if (expect_false (ev_is_active (w)))
2756 return; 3716 return;
2757 3717
2758 if (w->reschedule_cb) 3718 if (w->reschedule_cb)
2759 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3719 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2760 else if (w->interval) 3720 else if (w->interval)
2761 { 3721 {
2762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3722 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2763 /* this formula differs from the one in periodic_reify because we do not always round up */ 3723 periodic_recalc (EV_A_ w);
2764 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2765 } 3724 }
2766 else 3725 else
2767 ev_at (w) = w->offset; 3726 ev_at (w) = w->offset;
2768 3727
2769 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
… …
2779 3738
2780 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3739 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2781} 3740}
2782 3741
2783void noinline 3742void noinline
2784ev_periodic_stop (EV_P_ ev_periodic *w) 3743ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2785{ 3744{
2786 clear_pending (EV_A_ (W)w); 3745 clear_pending (EV_A_ (W)w);
2787 if (expect_false (!ev_is_active (w))) 3746 if (expect_false (!ev_is_active (w)))
2788 return; 3747 return;
2789 3748
… …
2807 3766
2808 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
2809} 3768}
2810 3769
2811void noinline 3770void noinline
2812ev_periodic_again (EV_P_ ev_periodic *w) 3771ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2813{ 3772{
2814 /* TODO: use adjustheap and recalculation */ 3773 /* TODO: use adjustheap and recalculation */
2815 ev_periodic_stop (EV_A_ w); 3774 ev_periodic_stop (EV_A_ w);
2816 ev_periodic_start (EV_A_ w); 3775 ev_periodic_start (EV_A_ w);
2817} 3776}
… …
2822#endif 3781#endif
2823 3782
2824#if EV_SIGNAL_ENABLE 3783#if EV_SIGNAL_ENABLE
2825 3784
2826void noinline 3785void noinline
2827ev_signal_start (EV_P_ ev_signal *w) 3786ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2828{ 3787{
2829 if (expect_false (ev_is_active (w))) 3788 if (expect_false (ev_is_active (w)))
2830 return; 3789 return;
2831 3790
2832 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3791 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2834#if EV_MULTIPLICITY 3793#if EV_MULTIPLICITY
2835 assert (("libev: a signal must not be attached to two different loops", 3794 assert (("libev: a signal must not be attached to two different loops",
2836 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3795 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2837 3796
2838 signals [w->signum - 1].loop = EV_A; 3797 signals [w->signum - 1].loop = EV_A;
3798 ECB_MEMORY_FENCE_RELEASE;
2839#endif 3799#endif
2840 3800
2841 EV_FREQUENT_CHECK; 3801 EV_FREQUENT_CHECK;
2842 3802
2843#if EV_USE_SIGNALFD 3803#if EV_USE_SIGNALFD
… …
2903 3863
2904 EV_FREQUENT_CHECK; 3864 EV_FREQUENT_CHECK;
2905} 3865}
2906 3866
2907void noinline 3867void noinline
2908ev_signal_stop (EV_P_ ev_signal *w) 3868ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2909{ 3869{
2910 clear_pending (EV_A_ (W)w); 3870 clear_pending (EV_A_ (W)w);
2911 if (expect_false (!ev_is_active (w))) 3871 if (expect_false (!ev_is_active (w)))
2912 return; 3872 return;
2913 3873
… …
2944#endif 3904#endif
2945 3905
2946#if EV_CHILD_ENABLE 3906#if EV_CHILD_ENABLE
2947 3907
2948void 3908void
2949ev_child_start (EV_P_ ev_child *w) 3909ev_child_start (EV_P_ ev_child *w) EV_THROW
2950{ 3910{
2951#if EV_MULTIPLICITY 3911#if EV_MULTIPLICITY
2952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3912 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2953#endif 3913#endif
2954 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
… …
2961 3921
2962 EV_FREQUENT_CHECK; 3922 EV_FREQUENT_CHECK;
2963} 3923}
2964 3924
2965void 3925void
2966ev_child_stop (EV_P_ ev_child *w) 3926ev_child_stop (EV_P_ ev_child *w) EV_THROW
2967{ 3927{
2968 clear_pending (EV_A_ (W)w); 3928 clear_pending (EV_A_ (W)w);
2969 if (expect_false (!ev_is_active (w))) 3929 if (expect_false (!ev_is_active (w)))
2970 return; 3930 return;
2971 3931
… …
2998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3958# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2999 3959
3000static void noinline 3960static void noinline
3001infy_add (EV_P_ ev_stat *w) 3961infy_add (EV_P_ ev_stat *w)
3002{ 3962{
3003 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); 3963 w->wd = inotify_add_watch (fs_fd, w->path,
3964 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3965 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3966 | IN_DONT_FOLLOW | IN_MASK_ADD);
3004 3967
3005 if (w->wd >= 0) 3968 if (w->wd >= 0)
3006 { 3969 {
3007 struct statfs sfs; 3970 struct statfs sfs;
3008 3971
… …
3012 3975
3013 if (!fs_2625) 3976 if (!fs_2625)
3014 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3977 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3015 else if (!statfs (w->path, &sfs) 3978 else if (!statfs (w->path, &sfs)
3016 && (sfs.f_type == 0x1373 /* devfs */ 3979 && (sfs.f_type == 0x1373 /* devfs */
3980 || sfs.f_type == 0x4006 /* fat */
3981 || sfs.f_type == 0x4d44 /* msdos */
3017 || sfs.f_type == 0xEF53 /* ext2/3 */ 3982 || sfs.f_type == 0xEF53 /* ext2/3 */
3983 || sfs.f_type == 0x72b6 /* jffs2 */
3984 || sfs.f_type == 0x858458f6 /* ramfs */
3985 || sfs.f_type == 0x5346544e /* ntfs */
3018 || sfs.f_type == 0x3153464a /* jfs */ 3986 || sfs.f_type == 0x3153464a /* jfs */
3987 || sfs.f_type == 0x9123683e /* btrfs */
3019 || sfs.f_type == 0x52654973 /* reiser3 */ 3988 || sfs.f_type == 0x52654973 /* reiser3 */
3020 || sfs.f_type == 0x01021994 /* tempfs */ 3989 || sfs.f_type == 0x01021994 /* tmpfs */
3021 || sfs.f_type == 0x58465342 /* xfs */)) 3990 || sfs.f_type == 0x58465342 /* xfs */))
3022 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3991 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3023 else 3992 else
3024 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3993 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3025 } 3994 }
… …
3046 if (!pend || pend == path) 4015 if (!pend || pend == path)
3047 break; 4016 break;
3048 4017
3049 *pend = 0; 4018 *pend = 0;
3050 w->wd = inotify_add_watch (fs_fd, path, mask); 4019 w->wd = inotify_add_watch (fs_fd, path, mask);
3051 } 4020 }
3052 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4021 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3053 } 4022 }
3054 } 4023 }
3055 4024
3056 if (w->wd >= 0) 4025 if (w->wd >= 0)
… …
3123 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4092 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3124 ofs += sizeof (struct inotify_event) + ev->len; 4093 ofs += sizeof (struct inotify_event) + ev->len;
3125 } 4094 }
3126} 4095}
3127 4096
3128inline_size void 4097inline_size void ecb_cold
3129ev_check_2625 (EV_P) 4098ev_check_2625 (EV_P)
3130{ 4099{
3131 /* kernels < 2.6.25 are borked 4100 /* kernels < 2.6.25 are borked
3132 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4101 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3133 */ 4102 */
… …
3138} 4107}
3139 4108
3140inline_size int 4109inline_size int
3141infy_newfd (void) 4110infy_newfd (void)
3142{ 4111{
3143#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4112#if defined IN_CLOEXEC && defined IN_NONBLOCK
3144 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4113 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3145 if (fd >= 0) 4114 if (fd >= 0)
3146 return fd; 4115 return fd;
3147#endif 4116#endif
3148 return inotify_init (); 4117 return inotify_init ();
… …
3223#else 4192#else
3224# define EV_LSTAT(p,b) lstat (p, b) 4193# define EV_LSTAT(p,b) lstat (p, b)
3225#endif 4194#endif
3226 4195
3227void 4196void
3228ev_stat_stat (EV_P_ ev_stat *w) 4197ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3229{ 4198{
3230 if (lstat (w->path, &w->attr) < 0) 4199 if (lstat (w->path, &w->attr) < 0)
3231 w->attr.st_nlink = 0; 4200 w->attr.st_nlink = 0;
3232 else if (!w->attr.st_nlink) 4201 else if (!w->attr.st_nlink)
3233 w->attr.st_nlink = 1; 4202 w->attr.st_nlink = 1;
… …
3272 ev_feed_event (EV_A_ w, EV_STAT); 4241 ev_feed_event (EV_A_ w, EV_STAT);
3273 } 4242 }
3274} 4243}
3275 4244
3276void 4245void
3277ev_stat_start (EV_P_ ev_stat *w) 4246ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3278{ 4247{
3279 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
3280 return; 4249 return;
3281 4250
3282 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
… …
3303 4272
3304 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
3305} 4274}
3306 4275
3307void 4276void
3308ev_stat_stop (EV_P_ ev_stat *w) 4277ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3309{ 4278{
3310 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
3311 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
3312 return; 4281 return;
3313 4282
… …
3329} 4298}
3330#endif 4299#endif
3331 4300
3332#if EV_IDLE_ENABLE 4301#if EV_IDLE_ENABLE
3333void 4302void
3334ev_idle_start (EV_P_ ev_idle *w) 4303ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3335{ 4304{
3336 if (expect_false (ev_is_active (w))) 4305 if (expect_false (ev_is_active (w)))
3337 return; 4306 return;
3338 4307
3339 pri_adjust (EV_A_ (W)w); 4308 pri_adjust (EV_A_ (W)w);
… …
3352 4321
3353 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3354} 4323}
3355 4324
3356void 4325void
3357ev_idle_stop (EV_P_ ev_idle *w) 4326ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3358{ 4327{
3359 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3360 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3361 return; 4330 return;
3362 4331
… …
3376} 4345}
3377#endif 4346#endif
3378 4347
3379#if EV_PREPARE_ENABLE 4348#if EV_PREPARE_ENABLE
3380void 4349void
3381ev_prepare_start (EV_P_ ev_prepare *w) 4350ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3382{ 4351{
3383 if (expect_false (ev_is_active (w))) 4352 if (expect_false (ev_is_active (w)))
3384 return; 4353 return;
3385 4354
3386 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
… …
3391 4360
3392 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
3393} 4362}
3394 4363
3395void 4364void
3396ev_prepare_stop (EV_P_ ev_prepare *w) 4365ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3397{ 4366{
3398 clear_pending (EV_A_ (W)w); 4367 clear_pending (EV_A_ (W)w);
3399 if (expect_false (!ev_is_active (w))) 4368 if (expect_false (!ev_is_active (w)))
3400 return; 4369 return;
3401 4370
… …
3414} 4383}
3415#endif 4384#endif
3416 4385
3417#if EV_CHECK_ENABLE 4386#if EV_CHECK_ENABLE
3418void 4387void
3419ev_check_start (EV_P_ ev_check *w) 4388ev_check_start (EV_P_ ev_check *w) EV_THROW
3420{ 4389{
3421 if (expect_false (ev_is_active (w))) 4390 if (expect_false (ev_is_active (w)))
3422 return; 4391 return;
3423 4392
3424 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
… …
3429 4398
3430 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
3431} 4400}
3432 4401
3433void 4402void
3434ev_check_stop (EV_P_ ev_check *w) 4403ev_check_stop (EV_P_ ev_check *w) EV_THROW
3435{ 4404{
3436 clear_pending (EV_A_ (W)w); 4405 clear_pending (EV_A_ (W)w);
3437 if (expect_false (!ev_is_active (w))) 4406 if (expect_false (!ev_is_active (w)))
3438 return; 4407 return;
3439 4408
… …
3452} 4421}
3453#endif 4422#endif
3454 4423
3455#if EV_EMBED_ENABLE 4424#if EV_EMBED_ENABLE
3456void noinline 4425void noinline
3457ev_embed_sweep (EV_P_ ev_embed *w) 4426ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3458{ 4427{
3459 ev_run (w->other, EVRUN_NOWAIT); 4428 ev_run (w->other, EVRUN_NOWAIT);
3460} 4429}
3461 4430
3462static void 4431static void
… …
3510 ev_idle_stop (EV_A_ idle); 4479 ev_idle_stop (EV_A_ idle);
3511} 4480}
3512#endif 4481#endif
3513 4482
3514void 4483void
3515ev_embed_start (EV_P_ ev_embed *w) 4484ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3516{ 4485{
3517 if (expect_false (ev_is_active (w))) 4486 if (expect_false (ev_is_active (w)))
3518 return; 4487 return;
3519 4488
3520 { 4489 {
… …
3541 4510
3542 EV_FREQUENT_CHECK; 4511 EV_FREQUENT_CHECK;
3543} 4512}
3544 4513
3545void 4514void
3546ev_embed_stop (EV_P_ ev_embed *w) 4515ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3547{ 4516{
3548 clear_pending (EV_A_ (W)w); 4517 clear_pending (EV_A_ (W)w);
3549 if (expect_false (!ev_is_active (w))) 4518 if (expect_false (!ev_is_active (w)))
3550 return; 4519 return;
3551 4520
… …
3561} 4530}
3562#endif 4531#endif
3563 4532
3564#if EV_FORK_ENABLE 4533#if EV_FORK_ENABLE
3565void 4534void
3566ev_fork_start (EV_P_ ev_fork *w) 4535ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3567{ 4536{
3568 if (expect_false (ev_is_active (w))) 4537 if (expect_false (ev_is_active (w)))
3569 return; 4538 return;
3570 4539
3571 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
… …
3576 4545
3577 EV_FREQUENT_CHECK; 4546 EV_FREQUENT_CHECK;
3578} 4547}
3579 4548
3580void 4549void
3581ev_fork_stop (EV_P_ ev_fork *w) 4550ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3582{ 4551{
3583 clear_pending (EV_A_ (W)w); 4552 clear_pending (EV_A_ (W)w);
3584 if (expect_false (!ev_is_active (w))) 4553 if (expect_false (!ev_is_active (w)))
3585 return; 4554 return;
3586 4555
… …
3599} 4568}
3600#endif 4569#endif
3601 4570
3602#if EV_CLEANUP_ENABLE 4571#if EV_CLEANUP_ENABLE
3603void 4572void
3604ev_cleanup_start (EV_P_ ev_cleanup *w) 4573ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3605{ 4574{
3606 if (expect_false (ev_is_active (w))) 4575 if (expect_false (ev_is_active (w)))
3607 return; 4576 return;
3608 4577
3609 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
… …
3616 ev_unref (EV_A); 4585 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3618} 4587}
3619 4588
3620void 4589void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w) 4590ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4591{
3623 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3625 return; 4594 return;
3626 4595
… …
3640} 4609}
3641#endif 4610#endif
3642 4611
3643#if EV_ASYNC_ENABLE 4612#if EV_ASYNC_ENABLE
3644void 4613void
3645ev_async_start (EV_P_ ev_async *w) 4614ev_async_start (EV_P_ ev_async *w) EV_THROW
3646{ 4615{
3647 if (expect_false (ev_is_active (w))) 4616 if (expect_false (ev_is_active (w)))
3648 return; 4617 return;
3649 4618
3650 w->sent = 0; 4619 w->sent = 0;
… …
3659 4628
3660 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3661} 4630}
3662 4631
3663void 4632void
3664ev_async_stop (EV_P_ ev_async *w) 4633ev_async_stop (EV_P_ ev_async *w) EV_THROW
3665{ 4634{
3666 clear_pending (EV_A_ (W)w); 4635 clear_pending (EV_A_ (W)w);
3667 if (expect_false (!ev_is_active (w))) 4636 if (expect_false (!ev_is_active (w)))
3668 return; 4637 return;
3669 4638
… …
3680 4649
3681 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3682} 4651}
3683 4652
3684void 4653void
3685ev_async_send (EV_P_ ev_async *w) 4654ev_async_send (EV_P_ ev_async *w) EV_THROW
3686{ 4655{
3687 w->sent = 1; 4656 w->sent = 1;
3688 evpipe_write (EV_A_ &async_pending); 4657 evpipe_write (EV_A_ &async_pending);
3689} 4658}
3690#endif 4659#endif
… …
3727 4696
3728 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4697 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3729} 4698}
3730 4699
3731void 4700void
3732ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4701ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3733{ 4702{
3734 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4703 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3735 4704
3736 if (expect_false (!once)) 4705 if (expect_false (!once))
3737 { 4706 {
… …
3758} 4727}
3759 4728
3760/*****************************************************************************/ 4729/*****************************************************************************/
3761 4730
3762#if EV_WALK_ENABLE 4731#if EV_WALK_ENABLE
3763void 4732void ecb_cold
3764ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4733ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3765{ 4734{
3766 int i, j; 4735 int i, j;
3767 ev_watcher_list *wl, *wn; 4736 ev_watcher_list *wl, *wn;
3768 4737
3769 if (types & (EV_IO | EV_EMBED)) 4738 if (types & (EV_IO | EV_EMBED))
… …
3812 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4781 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3813#endif 4782#endif
3814 4783
3815#if EV_IDLE_ENABLE 4784#if EV_IDLE_ENABLE
3816 if (types & EV_IDLE) 4785 if (types & EV_IDLE)
3817 for (j = NUMPRI; i--; ) 4786 for (j = NUMPRI; j--; )
3818 for (i = idlecnt [j]; i--; ) 4787 for (i = idlecnt [j]; i--; )
3819 cb (EV_A_ EV_IDLE, idles [j][i]); 4788 cb (EV_A_ EV_IDLE, idles [j][i]);
3820#endif 4789#endif
3821 4790
3822#if EV_FORK_ENABLE 4791#if EV_FORK_ENABLE
… …
3875 4844
3876#if EV_MULTIPLICITY 4845#if EV_MULTIPLICITY
3877 #include "ev_wrap.h" 4846 #include "ev_wrap.h"
3878#endif 4847#endif
3879 4848
3880EV_CPP(})
3881

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