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Comparing libev/ev.c (file contents):
Revision 1.407 by root, Wed Jan 25 01:32:12 2012 UTC vs.
Revision 1.484 by root, Tue Jul 31 05:40:58 2018 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) 2007,2008,2009,2010,2011,2012,2013 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 *
… …
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 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
183# include EV_H 193# include EV_H
184#else 194#else
185# include "ev.h" 195# include "ev.h"
186#endif 196#endif
187 197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
208
188#ifndef _WIN32 209#ifndef _WIN32
189# include <sys/time.h> 210# include <sys/time.h>
190# include <sys/wait.h> 211# include <sys/wait.h>
191# include <unistd.h> 212# include <unistd.h>
192#else 213#else
193# include <io.h> 214# include <io.h>
194# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
195# include <windows.h> 217# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
198# endif 220# endif
199# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
200#endif 222#endif
201 223
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
211 225
212/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 227#if defined EV_NSIG
214/* use what's provided */ 228/* use what's provided */
215#elif defined (NSIG) 229#elif defined NSIG
216# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 231#elif defined _NSIG
218# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 233#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 235#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 239#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 241#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 245#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 247#else
234# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 249#endif
239 250
240#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
242#endif 253#endif
243 254
244#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 258# else
248# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
249# endif 260# endif
250#endif 261#endif
251 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
252#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 275# else
256# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
257# endif 277# endif
258#endif 278#endif
… …
345 365
346#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 368#endif
349 369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
384#endif
385
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 389# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
358# else 394# else
… …
361# endif 397# endif
362#endif 398#endif
363 399
364/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365 401
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
375#endif 405#endif
376 406
… …
384# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
385#endif 415#endif
386 416
387#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 419# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 420# include <sys/select.h>
391# endif 421# endif
392#endif 422#endif
393 423
394#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
… …
397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
398# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
401# endif 431# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 432#endif
407 433
408#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 436# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
469/* 495/*
470 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
471 * 497 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 500 * All rights reserved.
475 * 501 *
476 * Redistribution and use in source and binary forms, with or without modifica- 502 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
496 */ 533 */
497 534
498#ifndef ECB_H 535#ifndef ECB_H
499#define ECB_H 536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
500 540
501#ifdef _WIN32 541#ifdef _WIN32
502 typedef signed char int8_t; 542 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
514 #endif 554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
515#else 564#else
516 #include <inttypes.h> 565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
517#endif 583#endif
518 584
519/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 588 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 589 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 590 * an issue with that they should have done it right in the first place.
525 */ 591 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
529 #else 594#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
532#endif 634#endif
533 635
534/*****************************************************************************/ 636/*****************************************************************************/
535 637
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 640
539#if ECB_NO_THREADS || ECB_NO_SMP 641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 647#endif
542 648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
543#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386 || __i386__ 660 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
565 #endif 709 #endif
566 #endif 710 #endif
567#endif 711#endif
568 712
569#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
571 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32) 739 #elif defined _WIN32
580 #include <WinNT.h> 740 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h> 743 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier () 744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
587 #endif 766 #endif
588#endif 767#endif
589 768
590#ifndef ECB_MEMORY_FENCE 769#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS 770 #if !ECB_AVOID_PTHREADS
… …
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif 784 #endif
606#endif 785#endif
607 786
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif 789#endif
611 790
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif 793#endif
615 794
616/*****************************************************************************/ 795/*****************************************************************************/
617 796
618#define ECB_C99 (__STDC_VERSION__ >= 199901L) 797#if ECB_CPP
619
620#if __cplusplus
621 #define ecb_inline static inline 798 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
624#elif ECB_C99 801#elif ECB_C99
625 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
639 816
640#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
644 822
645#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
646 824
647#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
648 #define ecb_attribute(attrlist) __attribute__(attrlist) 826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr) 832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
843#else
844 #define ecb_expect(expr,value) (expr)
845#endif
846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else 849#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality) 850 #define ecb_prefetch(addr,rw,locality)
657#endif 851#endif
658 852
659/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5) 854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
661 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
662#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
663 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
664#endif 860#endif
665 861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
666#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__)) 880#endif
881
668#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
671 897
672#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__)) 899 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__)) 900 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__)) 901 #define ecb_cold ecb_attribute ((__cold__))
… …
687/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
690 916
691/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4) 918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */ 928 /* no popcountll */
700#else 929#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
702 ecb_function_ int 931 ecb_function_ ecb_const int
703 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
704 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
705 int r = 0; 939 int r = 0;
706 940
707 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
708 942
709#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
719 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
721#endif 955#endif
722 956
723 return r; 957 return r;
958#endif
724 } 959 }
725 960
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
727 ecb_function_ int 962 ecb_function_ ecb_const int
728 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
729 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
730 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
732 } 973 }
733 974
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
735 ecb_function_ int 976 ecb_function_ ecb_const int
736 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
737 { 978 {
738 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101; 982 x *= 0x01010101;
742 983
743 return x >> 24; 984 return x >> 24;
744 } 985 }
745 986
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
747 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
748 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
749 int r = 0; 995 int r = 0;
750 996
751 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
756 1002
757 return r; 1003 return r;
1004#endif
758 } 1005 }
759 1006
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
761 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
762 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
763 int r = 0; 1015 int r = 0;
764 1016
765 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
766 1018
767 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
768 } 1021 }
769#endif 1022#endif
770 1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
773{ 1031{
774 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776} 1034}
777 1035
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
780{ 1038{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
785 1043
786 return x; 1044 return x;
787} 1045}
788 1046
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
791{ 1049{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
798 return x; 1056 return x;
799} 1057}
800 1058
801/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */ 1060/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
804ecb_function_ int 1062ecb_function_ ecb_const int
805ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
806{ 1064{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808} 1066}
809 1067
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
818 1076
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827 1085
828#if ECB_GCC_VERSION(4,3) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
830 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
832#else 1099#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
834 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
835 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
836 { 1103 {
837 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
838 } 1105 }
839 1106
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
841 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
842 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
843 { 1110 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 } 1112 }
846 1113
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
848 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
849 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
850 { 1117 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 } 1119 }
853#endif 1120#endif
854 1121
855#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
856 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
857#else 1124#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
860 ecb_function_ void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
861#endif 1128#endif
862 1129
863/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
865 1132
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
867ecb_function_ unsigned char 1134ecb_inline ecb_const uint32_t
868ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
869{ 1136{
870 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
871 return *(unsigned char *)&u; 1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
872} 1159}
873 1160
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
878 1165
879#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else 1168#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif 1170#endif
884 1171
885#if __cplusplus 1172#if ECB_CPP
886 template<typename T> 1173 template<typename T>
887 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
888 { 1175 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 } 1177 }
… …
907 } 1194 }
908#else 1195#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif 1197#endif
911 1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
912#endif 1504#endif
913 1505
914/* ECB.H END */ 1506/* ECB.H END */
915 1507
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
937#define inline_size ecb_inline 1529#define inline_size ecb_inline
938 1530
939#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
940# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
941#else 1533#else
942# define inline_speed static noinline 1534# define inline_speed noinline static
943#endif 1535#endif
944 1536
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946 1538
947#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
994#else 1586#else
995 1587
996#include <float.h> 1588#include <float.h>
997 1589
998/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
999static ev_tstamp noinline 1592static ev_tstamp
1000ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1001{ 1594{
1002 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1036 1629
1037#ifdef __linux 1630#ifdef __linux
1038# include <sys/utsname.h> 1631# include <sys/utsname.h>
1039#endif 1632#endif
1040 1633
1041static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1042ev_linux_version (void) 1636ev_linux_version (void)
1043{ 1637{
1044#ifdef __linux 1638#ifdef __linux
1045 unsigned int v = 0; 1639 unsigned int v = 0;
1046 struct utsname buf; 1640 struct utsname buf;
… …
1075} 1669}
1076 1670
1077/*****************************************************************************/ 1671/*****************************************************************************/
1078 1672
1079#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1080static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1081ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1082{ 1677{
1083 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1084} 1679}
1085#endif 1680#endif
1086 1681
1087static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1088 1683
1089void ecb_cold 1684ecb_cold
1685void
1090ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1091{ 1687{
1092 syserr_cb = cb; 1688 syserr_cb = cb;
1093} 1689}
1094 1690
1095static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1096ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1097{ 1694{
1098 if (!msg) 1695 if (!msg)
1099 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1100 1697
… …
1113 abort (); 1710 abort ();
1114 } 1711 }
1115} 1712}
1116 1713
1117static void * 1714static void *
1118ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
1119{ 1716{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
1123 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1124 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
1125 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
1126 */ 1722 */
1127 1723
1128 if (size) 1724 if (size)
1129 return realloc (ptr, size); 1725 return realloc (ptr, size);
1130 1726
1131 free (ptr); 1727 free (ptr);
1132 return 0; 1728 return 0;
1133#endif
1134} 1729}
1135 1730
1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1137 1732
1138void ecb_cold 1733ecb_cold
1734void
1139ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1140{ 1736{
1141 alloc = cb; 1737 alloc = cb;
1142} 1738}
1143 1739
1144inline_speed void * 1740inline_speed void *
… …
1261 1857
1262/*****************************************************************************/ 1858/*****************************************************************************/
1263 1859
1264#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
1265ev_tstamp 1861ev_tstamp
1266ev_time (void) 1862ev_time (void) EV_THROW
1267{ 1863{
1268#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
1269 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
1270 { 1866 {
1271 struct timespec ts; 1867 struct timespec ts;
… …
1295 return ev_time (); 1891 return ev_time ();
1296} 1892}
1297 1893
1298#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
1299ev_tstamp 1895ev_tstamp
1300ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
1301{ 1897{
1302 return ev_rt_now; 1898 return ev_rt_now;
1303} 1899}
1304#endif 1900#endif
1305 1901
1306void 1902void
1307ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
1308{ 1904{
1309 if (delay > 0.) 1905 if (delay > 0.)
1310 { 1906 {
1311#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
1312 struct timespec ts; 1908 struct timespec ts;
1313 1909
1314 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1315 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1316#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1317 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1318#else 1916#else
1319 struct timeval tv; 1917 struct timeval tv;
1320 1918
1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1352 } 1950 }
1353 1951
1354 return ncur; 1952 return ncur;
1355} 1953}
1356 1954
1357static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1358array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1359{ 1958{
1360 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1361 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1362} 1961}
… …
1365 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1366 1965
1367#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1368 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1369 { \ 1968 { \
1370 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1371 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1372 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1373 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1374 } 1973 }
1375 1974
… …
1387 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1388 1987
1389/*****************************************************************************/ 1988/*****************************************************************************/
1390 1989
1391/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1392static void noinline 1991noinline
1992static void
1393pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1394{ 1994{
1395} 1995}
1396 1996
1397void noinline 1997noinline
1998void
1398ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1399{ 2000{
1400 W w_ = (W)w; 2001 W w_ = (W)w;
1401 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1402 2003
1403 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
1407 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
1408 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1409 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
1410 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
1411 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
1412} 2015}
1413 2016
1414inline_speed void 2017inline_speed void
1415feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
1416{ 2019{
… …
1462 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
1464} 2067}
1465 2068
1466void 2069void
1467ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1468{ 2071{
1469 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
1470 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
1471} 2074}
1472 2075
… …
1530 2133
1531 fdchangecnt = 0; 2134 fdchangecnt = 0;
1532} 2135}
1533 2136
1534/* something about the given fd changed */ 2137/* something about the given fd changed */
1535inline_size void 2138inline_size
2139void
1536fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1537{ 2141{
1538 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1539 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1540 2144
… …
1545 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1546 } 2150 }
1547} 2151}
1548 2152
1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1550inline_speed void ecb_cold 2154inline_speed ecb_cold void
1551fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1552{ 2156{
1553 ev_io *w; 2157 ev_io *w;
1554 2158
1555 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1559 } 2163 }
1560} 2164}
1561 2165
1562/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold 2167inline_size ecb_cold int
1564fd_valid (int fd) 2168fd_valid (int fd)
1565{ 2169{
1566#ifdef _WIN32 2170#ifdef _WIN32
1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1568#else 2172#else
1569 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1570#endif 2174#endif
1571} 2175}
1572 2176
1573/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1574static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1575fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1576{ 2181{
1577 int fd; 2182 int fd;
1578 2183
1579 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1581 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1582 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1583} 2188}
1584 2189
1585/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1586static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1587fd_enomem (EV_P) 2193fd_enomem (EV_P)
1588{ 2194{
1589 int fd; 2195 int fd;
1590 2196
1591 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1595 break; 2201 break;
1596 } 2202 }
1597} 2203}
1598 2204
1599/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1600static void noinline 2206noinline
2207static void
1601fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1602{ 2209{
1603 int fd; 2210 int fd;
1604 2211
1605 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1786 2393
1787/*****************************************************************************/ 2394/*****************************************************************************/
1788 2395
1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1790 2397
1791static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1792evpipe_init (EV_P) 2400evpipe_init (EV_P)
1793{ 2401{
1794 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1795 { 2403 {
2404 int fds [2];
2405
1796# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1799 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1800 2411
1801 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1802 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1803 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1804 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1805 ev_io_set (&pipe_w, evfd, EV_READ); 2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
2444inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448
2449 if (expect_true (*flag))
2450 return;
2451
2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
2468#if EV_USE_EVENTFD
2469 if (evpipe [0] < 0)
2470 {
2471 uint64_t counter = 1;
2472 write (evpipe [1], &counter, sizeof (uint64_t));
1806 } 2473 }
1807 else 2474 else
1808# endif 2475#endif
1809 { 2476 {
1810 while (pipe (evpipe)) 2477#ifdef _WIN32
1811 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1812 2479 DWORD sent;
1813 fd_intern (evpipe [0]); 2480 buf.buf = &buf;
1814 fd_intern (evpipe [1]); 2481 buf.len = 1;
1815 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1816 } 2483#else
1817
1818 ev_io_start (EV_A_ &pipe_w);
1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1820 }
1821}
1822
1823inline_speed void
1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1825{
1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1843 old_errno = errno; /* save errno because write will clobber it */
1844
1845#if EV_USE_EVENTFD
1846 if (evfd >= 0)
1847 {
1848 uint64_t counter = 1;
1849 write (evfd, &counter, sizeof (uint64_t));
1850 }
1851 else
1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1859 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1860 } 2486 }
1861 2487
1862 errno = old_errno; 2488 errno = old_errno;
1863 } 2489 }
1864} 2490}
… …
1871 int i; 2497 int i;
1872 2498
1873 if (revents & EV_READ) 2499 if (revents & EV_READ)
1874 { 2500 {
1875#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1876 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1877 { 2503 {
1878 uint64_t counter; 2504 uint64_t counter;
1879 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1880 } 2506 }
1881 else 2507 else
1882#endif 2508#endif
1883 { 2509 {
1884 char dummy; 2510 char dummy[4];
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1886 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
1887 } 2521 }
1888 } 2522 }
1889 2523
1890 pipe_write_skipped = 0; 2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1891 2527
1892#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1893 if (sig_pending) 2529 if (sig_pending)
1894 { 2530 {
1895 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1896 2534
1897 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1898 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1899 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1900 } 2538 }
… …
1902 2540
1903#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1904 if (async_pending) 2542 if (async_pending)
1905 { 2543 {
1906 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1907 2547
1908 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1909 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1910 { 2550 {
1911 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1912 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1913 } 2554 }
1914 } 2555 }
1915#endif 2556#endif
1916} 2557}
1917 2558
1918/*****************************************************************************/ 2559/*****************************************************************************/
1919 2560
1920void 2561void
1921ev_feed_signal (int signum) 2562ev_feed_signal (int signum) EV_THROW
1922{ 2563{
1923#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1924 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1925 2568
1926 if (!EV_A) 2569 if (!EV_A)
1927 return; 2570 return;
1928#endif 2571#endif
1929 2572
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1935} 2575}
1936 2576
1937static void 2577static void
… …
1942#endif 2582#endif
1943 2583
1944 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1945} 2585}
1946 2586
1947void noinline 2587noinline
2588void
1948ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1949{ 2590{
1950 WL w; 2591 WL w;
1951 2592
1952 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1953 return; 2594 return;
1954 2595
1955 --signum; 2596 --signum;
1956 2597
1957#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1961 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1962 return; 2603 return;
1963#endif 2604#endif
1964 2605
1965 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1966 2608
1967 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1969} 2611}
1970 2612
… …
2068#endif 2710#endif
2069#if EV_USE_SELECT 2711#if EV_USE_SELECT
2070# include "ev_select.c" 2712# include "ev_select.c"
2071#endif 2713#endif
2072 2714
2073int ecb_cold 2715ecb_cold int
2074ev_version_major (void) 2716ev_version_major (void) EV_THROW
2075{ 2717{
2076 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2077} 2719}
2078 2720
2079int ecb_cold 2721ecb_cold int
2080ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
2081{ 2723{
2082 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2083} 2725}
2084 2726
2085/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2086int inline_size ecb_cold 2728inline_size ecb_cold int
2087enable_secure (void) 2729enable_secure (void)
2088{ 2730{
2089#ifdef _WIN32 2731#ifdef _WIN32
2090 return 0; 2732 return 0;
2091#else 2733#else
2092 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2093 || getgid () != getegid (); 2735 || getgid () != getegid ();
2094#endif 2736#endif
2095} 2737}
2096 2738
2097unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2098ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
2099{ 2742{
2100 unsigned int flags = 0; 2743 unsigned int flags = 0;
2101 2744
2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2103 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2107 2750
2108 return flags; 2751 return flags;
2109} 2752}
2110 2753
2111unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2112ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
2113{ 2757{
2114 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2115 2759
2116#ifndef __NetBSD__ 2760#ifndef __NetBSD__
2117 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
2128#endif 2772#endif
2129 2773
2130 return flags; 2774 return flags;
2131} 2775}
2132 2776
2133unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2134ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
2135{ 2780{
2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2137 2782
2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2141 2786
2142 return flags; 2787 return flags;
2143} 2788}
2144 2789
2145unsigned int 2790unsigned int
2146ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
2147{ 2792{
2148 return backend; 2793 return backend;
2149} 2794}
2150 2795
2151#if EV_FEATURE_API 2796#if EV_FEATURE_API
2152unsigned int 2797unsigned int
2153ev_iteration (EV_P) 2798ev_iteration (EV_P) EV_THROW
2154{ 2799{
2155 return loop_count; 2800 return loop_count;
2156} 2801}
2157 2802
2158unsigned int 2803unsigned int
2159ev_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
2160{ 2805{
2161 return loop_depth; 2806 return loop_depth;
2162} 2807}
2163 2808
2164void 2809void
2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2166{ 2811{
2167 io_blocktime = interval; 2812 io_blocktime = interval;
2168} 2813}
2169 2814
2170void 2815void
2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2172{ 2817{
2173 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
2174} 2819}
2175 2820
2176void 2821void
2177ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
2178{ 2823{
2179 userdata = data; 2824 userdata = data;
2180} 2825}
2181 2826
2182void * 2827void *
2183ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
2184{ 2829{
2185 return userdata; 2830 return userdata;
2186} 2831}
2187 2832
2188void 2833void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2190{ 2835{
2191 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2192} 2837}
2193 2838
2194void 2839void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2196{ 2841{
2197 release_cb = release; 2842 release_cb = release;
2198 acquire_cb = acquire; 2843 acquire_cb = acquire;
2199} 2844}
2200#endif 2845#endif
2201 2846
2202/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2203static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2204loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2205{ 2851{
2206 if (!backend) 2852 if (!backend)
2207 { 2853 {
2208 origflags = flags; 2854 origflags = flags;
2209 2855
… …
2254#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2255 async_pending = 0; 2901 async_pending = 0;
2256#endif 2902#endif
2257 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2259#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif 2909#endif
2262#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2293#endif 2941#endif
2294 } 2942 }
2295} 2943}
2296 2944
2297/* free up a loop structure */ 2945/* free up a loop structure */
2298void ecb_cold 2946ecb_cold
2947void
2299ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2300{ 2949{
2301 int i; 2950 int i;
2302 2951
2303#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2314 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2315 } 2964 }
2316#endif 2965#endif
2317 2966
2318#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2320 { 2969 {
2321 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2323 } 2972 }
2324#endif 2973#endif
… …
2326 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2327 { 2976 {
2328 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2329 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2330 2979
2331#if EV_USE_EVENTFD
2332 if (evfd >= 0)
2333 close (evfd);
2334#endif
2335
2336 if (evpipe [0] >= 0)
2337 {
2338 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2339 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2340 }
2341 } 2982 }
2342 2983
2343#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2345 close (sigfd); 2986 close (sigfd);
… …
2431#endif 3072#endif
2432#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2433 infy_fork (EV_A); 3074 infy_fork (EV_A);
2434#endif 3075#endif
2435 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2436 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2437 { 3079 {
2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2439 3081
2440 ev_ref (EV_A); 3082 ev_ref (EV_A);
2441 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2442 3084
2443#if EV_USE_EVENTFD
2444 if (evfd >= 0)
2445 close (evfd);
2446#endif
2447
2448 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2449 {
2450 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2451 EV_WIN32_CLOSE_FD (evpipe [1]);
2452 }
2453 3087
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2455 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2456 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2457 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2458#endif
2459 } 3091 }
3092#endif
2460 3093
2461 postfork = 0; 3094 postfork = 0;
2462} 3095}
2463 3096
2464#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2465 3098
3099ecb_cold
2466struct ev_loop * ecb_cold 3100struct ev_loop *
2467ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
2468{ 3102{
2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2470 3104
2471 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
2472 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
… …
2479} 3113}
2480 3114
2481#endif /* multiplicity */ 3115#endif /* multiplicity */
2482 3116
2483#if EV_VERIFY 3117#if EV_VERIFY
2484static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2485verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2486{ 3121{
2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2488 3123
2489 if (w->pending) 3124 if (w->pending)
2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2491} 3126}
2492 3127
2493static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2494verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2495{ 3131{
2496 int i; 3132 int i;
2497 3133
2498 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2503 3139
2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2505 } 3141 }
2506} 3142}
2507 3143
2508static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2509array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2510{ 3147{
2511 while (cnt--) 3148 while (cnt--)
2512 { 3149 {
2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2516} 3153}
2517#endif 3154#endif
2518 3155
2519#if EV_FEATURE_API 3156#if EV_FEATURE_API
2520void ecb_cold 3157void ecb_cold
2521ev_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
2522{ 3159{
2523#if EV_VERIFY 3160#if EV_VERIFY
2524 int i; 3161 int i;
2525 WL w; 3162 WL w, w2;
2526 3163
2527 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2528 3165
2529 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2530 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2532 3169
2533 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2534 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2535 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2536 { 3176 {
2537 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2539 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2540 } 3187 }
3188 }
2541 3189
2542 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2543 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2544 3192
2545#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2591#endif 3239#endif
2592} 3240}
2593#endif 3241#endif
2594 3242
2595#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2596struct ev_loop * ecb_cold 3245struct ev_loop *
2597#else 3246#else
2598int 3247int
2599#endif 3248#endif
2600ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
2601{ 3250{
2602 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
2603 { 3252 {
2604#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
2605 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2624 3273
2625 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
2626} 3275}
2627 3276
2628void 3277void
2629ev_loop_fork (EV_P) 3278ev_loop_fork (EV_P) EV_THROW
2630{ 3279{
2631 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2632} 3281}
2633 3282
2634/*****************************************************************************/ 3283/*****************************************************************************/
2635 3284
2636void 3285void
… …
2638{ 3287{
2639 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2640} 3289}
2641 3290
2642unsigned int 3291unsigned int
2643ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
2644{ 3293{
2645 int pri; 3294 int pri;
2646 unsigned int count = 0; 3295 unsigned int count = 0;
2647 3296
2648 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2650 3299
2651 return count; 3300 return count;
2652} 3301}
2653 3302
2654void noinline 3303noinline
3304void
2655ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2656{ 3306{
2657 int pri; 3307 pendingpri = NUMPRI;
2658 3308
2659 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2660 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2661 { 3315 {
2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2663 3317
2664 p->w->pending = 0; 3318 p->w->pending = 0;
2665 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2666 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2667 } 3321 }
3322 }
3323 while (pendingpri);
2668} 3324}
2669 3325
2670#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2730 } 3386 }
2731} 3387}
2732 3388
2733#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
2734 3390
2735static void noinline 3391noinline
3392static void
2736periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
2737{ 3394{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740 3397
… …
2762{ 3419{
2763 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2764 3421
2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2766 { 3423 {
2767 int feed_count = 0;
2768
2769 do 3424 do
2770 { 3425 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772 3427
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2800 } 3455 }
2801} 3456}
2802 3457
2803/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
2805static void noinline ecb_cold 3460noinline ecb_cold
3461static void
2806periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2807{ 3463{
2808 int i; 3464 int i;
2809 3465
2810 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2823 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2824} 3480}
2825#endif 3481#endif
2826 3482
2827/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2828static void noinline ecb_cold 3484noinline ecb_cold
3485static void
2829timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2830{ 3487{
2831 int i; 3488 int i;
2832 3489
2833 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2907 3564
2908 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2909 } 3566 }
2910} 3567}
2911 3568
2912void 3569int
2913ev_run (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2914{ 3571{
2915#if EV_FEATURE_API 3572#if EV_FEATURE_API
2916 ++loop_depth; 3573 ++loop_depth;
2917#endif 3574#endif
… …
3032 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034 3691
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036 3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3037 if (pipe_write_skipped) 3695 if (pipe_write_skipped)
3038 { 3696 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 } 3699 }
… …
3074 loop_done = EVBREAK_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
3075 3733
3076#if EV_FEATURE_API 3734#if EV_FEATURE_API
3077 --loop_depth; 3735 --loop_depth;
3078#endif 3736#endif
3079}
3080 3737
3738 return activecnt;
3739}
3740
3081void 3741void
3082ev_break (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_THROW
3083{ 3743{
3084 loop_done = how; 3744 loop_done = how;
3085} 3745}
3086 3746
3087void 3747void
3088ev_ref (EV_P) 3748ev_ref (EV_P) EV_THROW
3089{ 3749{
3090 ++activecnt; 3750 ++activecnt;
3091} 3751}
3092 3752
3093void 3753void
3094ev_unref (EV_P) 3754ev_unref (EV_P) EV_THROW
3095{ 3755{
3096 --activecnt; 3756 --activecnt;
3097} 3757}
3098 3758
3099void 3759void
3100ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_THROW
3101{ 3761{
3102 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
3103} 3763}
3104 3764
3105void 3765void
3106ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_THROW
3107{ 3767{
3108 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
3109} 3769}
3110 3770
3111void 3771void
3112ev_resume (EV_P) 3772ev_resume (EV_P) EV_THROW
3113{ 3773{
3114 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
3115 3775
3116 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3156 w->pending = 0; 3816 w->pending = 0;
3157 } 3817 }
3158} 3818}
3159 3819
3160int 3820int
3161ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_THROW
3162{ 3822{
3163 W w_ = (W)w; 3823 W w_ = (W)w;
3164 int pending = w_->pending; 3824 int pending = w_->pending;
3165 3825
3166 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
3198 w->active = 0; 3858 w->active = 0;
3199} 3859}
3200 3860
3201/*****************************************************************************/ 3861/*****************************************************************************/
3202 3862
3203void noinline 3863noinline
3864void
3204ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
3205{ 3866{
3206 int fd = w->fd; 3867 int fd = w->fd;
3207 3868
3208 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
3209 return; 3870 return;
… …
3215 3876
3216 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3218 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
3219 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3221 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3222 3886
3223 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3224} 3888}
3225 3889
3226void noinline 3890noinline
3891void
3227ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
3228{ 3893{
3229 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3230 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3231 return; 3896 return;
3232 3897
… …
3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3241 3906
3242 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3243} 3908}
3244 3909
3245void noinline 3910noinline
3911void
3246ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3247{ 3913{
3248 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3249 return; 3915 return;
3250 3916
3251 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
3264 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3265 3931
3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3267} 3933}
3268 3934
3269void noinline 3935noinline
3936void
3270ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3271{ 3938{
3272 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3274 return; 3941 return;
3275 3942
… …
3294 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3295 3962
3296 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3297} 3964}
3298 3965
3299void noinline 3966noinline
3967void
3300ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3301{ 3969{
3302 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3303 3971
3304 clear_pending (EV_A_ (W)w); 3972 clear_pending (EV_A_ (W)w);
3305 3973
… …
3322 3990
3323 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3324} 3992}
3325 3993
3326ev_tstamp 3994ev_tstamp
3327ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3328{ 3996{
3329 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3330} 3998}
3331 3999
3332#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3333void noinline 4001noinline
4002void
3334ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3335{ 4004{
3336 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3337 return; 4006 return;
3338 4007
3339 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
… …
3358 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3359 4028
3360 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3361} 4030}
3362 4031
3363void noinline 4032noinline
4033void
3364ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3365{ 4035{
3366 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3367 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3368 return; 4038 return;
3369 4039
… …
3386 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3387 4057
3388 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3389} 4059}
3390 4060
3391void noinline 4061noinline
4062void
3392ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3393{ 4064{
3394 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3395 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3396 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
3397} 4068}
… …
3401# define SA_RESTART 0 4072# define SA_RESTART 0
3402#endif 4073#endif
3403 4074
3404#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3405 4076
3406void noinline 4077noinline
4078void
3407ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3408{ 4080{
3409 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3410 return; 4082 return;
3411 4083
3412 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3414#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
3415 assert (("libev: a signal must not be attached to two different loops", 4087 assert (("libev: a signal must not be attached to two different loops",
3416 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3417 4089
3418 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
3419#endif 4092#endif
3420 4093
3421 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3422 4095
3423#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
3482 } 4155 }
3483 4156
3484 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3485} 4158}
3486 4159
3487void noinline 4160noinline
4161void
3488ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3489{ 4163{
3490 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3491 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3492 return; 4166 return;
3493 4167
… …
3524#endif 4198#endif
3525 4199
3526#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
3527 4201
3528void 4202void
3529ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_THROW
3530{ 4204{
3531#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
3532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3533#endif 4207#endif
3534 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
… …
3541 4215
3542 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3543} 4217}
3544 4218
3545void 4219void
3546ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_THROW
3547{ 4221{
3548 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3549 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3550 return; 4224 return;
3551 4225
… …
3568 4242
3569#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3570#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3571#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3572 4246
3573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3574 4248
3575#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3576 4250
3577/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3578# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3579 4253
3580static void noinline 4254noinline
4255static void
3581infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3582{ 4257{
3583 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); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
3584 4262
3585 if (w->wd >= 0) 4263 if (w->wd >= 0)
3586 { 4264 {
3587 struct statfs sfs; 4265 struct statfs sfs;
3588 4266
… …
3592 4270
3593 if (!fs_2625) 4271 if (!fs_2625)
3594 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3595 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
3596 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
3597 || sfs.f_type == 0xEF53 /* ext2/3 */ 4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
3598 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
3599 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
3600 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
3601 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
3602 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3603 else 4287 else
3604 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3605 } 4289 }
… …
3640 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3641 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
3642 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3643} 4327}
3644 4328
3645static void noinline 4329noinline
4330static void
3646infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
3647{ 4332{
3648 int slot; 4333 int slot;
3649 int wd = w->wd; 4334 int wd = w->wd;
3650 4335
… …
3657 4342
3658 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3659 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3660} 4345}
3661 4346
3662static void noinline 4347noinline
4348static void
3663infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3664{ 4350{
3665 if (slot < 0) 4351 if (slot < 0)
3666 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3667 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3703 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3704 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3705 } 4391 }
3706} 4392}
3707 4393
3708inline_size void ecb_cold 4394inline_size ecb_cold
4395void
3709ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3710{ 4397{
3711 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3712 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3713 */ 4400 */
… …
3718} 4405}
3719 4406
3720inline_size int 4407inline_size int
3721infy_newfd (void) 4408infy_newfd (void)
3722{ 4409{
3723#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3724 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3725 if (fd >= 0) 4412 if (fd >= 0)
3726 return fd; 4413 return fd;
3727#endif 4414#endif
3728 return inotify_init (); 4415 return inotify_init ();
… …
3803#else 4490#else
3804# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3805#endif 4492#endif
3806 4493
3807void 4494void
3808ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3809{ 4496{
3810 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3811 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3812 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3813 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3814} 4501}
3815 4502
3816static void noinline 4503noinline
4504static void
3817stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3818{ 4506{
3819 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3820 4508
3821 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3852 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3853 } 4541 }
3854} 4542}
3855 4543
3856void 4544void
3857ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3858{ 4546{
3859 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3860 return; 4548 return;
3861 4549
3862 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3883 4571
3884 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3885} 4573}
3886 4574
3887void 4575void
3888ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3889{ 4577{
3890 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3891 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3892 return; 4580 return;
3893 4581
… …
3909} 4597}
3910#endif 4598#endif
3911 4599
3912#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3913void 4601void
3914ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3915{ 4603{
3916 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3917 return; 4605 return;
3918 4606
3919 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3932 4620
3933 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3934} 4622}
3935 4623
3936void 4624void
3937ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3938{ 4626{
3939 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3941 return; 4629 return;
3942 4630
… …
3956} 4644}
3957#endif 4645#endif
3958 4646
3959#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
3960void 4648void
3961ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3962{ 4650{
3963 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3964 return; 4652 return;
3965 4653
3966 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3971 4659
3972 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3973} 4661}
3974 4662
3975void 4663void
3976ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3977{ 4665{
3978 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3979 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3980 return; 4668 return;
3981 4669
… …
3994} 4682}
3995#endif 4683#endif
3996 4684
3997#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
3998void 4686void
3999ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_THROW
4000{ 4688{
4001 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
4002 return; 4690 return;
4003 4691
4004 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
4009 4697
4010 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
4011} 4699}
4012 4700
4013void 4701void
4014ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_THROW
4015{ 4703{
4016 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
4017 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
4018 return; 4706 return;
4019 4707
… …
4031 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4032} 4720}
4033#endif 4721#endif
4034 4722
4035#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
4036void noinline 4724noinline
4725void
4037ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4038{ 4727{
4039 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
4040} 4729}
4041 4730
4042static void 4731static void
… …
4090 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
4091} 4780}
4092#endif 4781#endif
4093 4782
4094void 4783void
4095ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4096{ 4785{
4097 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
4098 return; 4787 return;
4099 4788
4100 { 4789 {
… …
4121 4810
4122 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
4123} 4812}
4124 4813
4125void 4814void
4126ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4127{ 4816{
4128 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
4129 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
4130 return; 4819 return;
4131 4820
… …
4141} 4830}
4142#endif 4831#endif
4143 4832
4144#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
4145void 4834void
4146ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4147{ 4836{
4148 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4149 return; 4838 return;
4150 4839
4151 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
4156 4845
4157 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
4158} 4847}
4159 4848
4160void 4849void
4161ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4162{ 4851{
4163 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
4164 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
4165 return; 4854 return;
4166 4855
… …
4179} 4868}
4180#endif 4869#endif
4181 4870
4182#if EV_CLEANUP_ENABLE 4871#if EV_CLEANUP_ENABLE
4183void 4872void
4184ev_cleanup_start (EV_P_ ev_cleanup *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4185{ 4874{
4186 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
4187 return; 4876 return;
4188 4877
4189 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
… …
4196 ev_unref (EV_A); 4885 ev_unref (EV_A);
4197 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4198} 4887}
4199 4888
4200void 4889void
4201ev_cleanup_stop (EV_P_ ev_cleanup *w) 4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4202{ 4891{
4203 clear_pending (EV_A_ (W)w); 4892 clear_pending (EV_A_ (W)w);
4204 if (expect_false (!ev_is_active (w))) 4893 if (expect_false (!ev_is_active (w)))
4205 return; 4894 return;
4206 4895
… …
4220} 4909}
4221#endif 4910#endif
4222 4911
4223#if EV_ASYNC_ENABLE 4912#if EV_ASYNC_ENABLE
4224void 4913void
4225ev_async_start (EV_P_ ev_async *w) 4914ev_async_start (EV_P_ ev_async *w) EV_THROW
4226{ 4915{
4227 if (expect_false (ev_is_active (w))) 4916 if (expect_false (ev_is_active (w)))
4228 return; 4917 return;
4229 4918
4230 w->sent = 0; 4919 w->sent = 0;
… …
4239 4928
4240 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4241} 4930}
4242 4931
4243void 4932void
4244ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_THROW
4245{ 4934{
4246 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
4248 return; 4937 return;
4249 4938
… …
4260 4949
4261 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
4262} 4951}
4263 4952
4264void 4953void
4265ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_THROW
4266{ 4955{
4267 w->sent = 1; 4956 w->sent = 1;
4268 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
4269} 4958}
4270#endif 4959#endif
… …
4307 4996
4308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4309} 4998}
4310 4999
4311void 5000void
4312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4313{ 5002{
4314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4315 5004
4316 if (expect_false (!once)) 5005 if (expect_false (!once))
4317 { 5006 {
… …
4338} 5027}
4339 5028
4340/*****************************************************************************/ 5029/*****************************************************************************/
4341 5030
4342#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4343void ecb_cold 5032ecb_cold
5033void
4344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4345{ 5035{
4346 int i, j; 5036 int i, j;
4347 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4348 5038
4349 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))

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