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Comparing libev/ev.c (file contents):
Revision 1.396 by root, Wed Aug 24 16:13:17 2011 UTC vs.
Revision 1.486 by root, Thu Oct 25 03:11:04 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
188EV_CPP(extern "C" {) 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
189 208
190#ifndef _WIN32 209#ifndef _WIN32
191# include <sys/time.h> 210# include <sys/time.h>
192# include <sys/wait.h> 211# include <sys/wait.h>
193# include <unistd.h> 212# include <unistd.h>
194#else 213#else
195# include <io.h> 214# include <io.h>
196# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
197# include <windows.h> 217# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
200# endif 220# endif
201# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
202#endif 222#endif
203 223
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* 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 */
213 225
214/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 227#if defined EV_NSIG
216/* use what's provided */ 228/* use what's provided */
217#elif defined (NSIG) 229#elif defined NSIG
218# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 231#elif defined _NSIG
220# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 233#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 235#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 239#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 241#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 245#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 247#else
236# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 249#endif
241 250
242#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
244#endif 253#endif
245 254
246#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 258# else
250# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
251# endif 260# endif
252#endif 261#endif
253 262
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
254#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 275# else
258# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
259# endif 277# endif
260#endif 278#endif
… …
347 365
348#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 368#endif
351 369
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
352/* 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, */
353/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 389# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
360# else 394# else
… …
363# endif 397# endif
364#endif 398#endif
365 399
366/* 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 */
367 401
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
377#endif 405#endif
378 406
… …
386# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
387#endif 415#endif
388 416
389#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
390/* 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 */
391# if !defined(_WIN32) && !defined(__hpux) 419# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 420# include <sys/select.h>
393# endif 421# endif
394#endif 422#endif
395 423
396#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
… …
399/* 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 */
400# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
403# endif 431# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 432#endif
409 433
410#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
411/* 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 */
412# include <stdint.h> 436# include <stdint.h>
… …
469/* 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 */
470/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
471/* 495/*
472 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
473 * 497 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 500 * All rights reserved.
477 * 501 *
478 * 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-
479 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
493 * 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;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * 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
497 * 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.
498 */ 533 */
499 534
500#ifndef ECB_H 535#ifndef ECB_H
501#define ECB_H 536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
502 540
503#ifdef _WIN32 541#ifdef _WIN32
504 typedef signed char int8_t; 542 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
516 #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
517#else 564#else
518 #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
519#endif 583#endif
520 584
521/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 588 * or so.
525 * 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
526 * 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.
527 */ 591 */
528#ifndef ECB_GCC_VERSION
529 #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__
530 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
531 #else 594#else
532 #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)))
533 #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
534#endif 634#endif
535 635
536/*****************************************************************************/ 636/*****************************************************************************/
537 637
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* 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 */
540 640
541#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
542 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 647#endif
544 648
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
545#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __i386__ 660 #if __i386 || __i386__
548 #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")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
551 #elif __amd64 664 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #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 */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
559 #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")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
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")
563 #endif 709 #endif
564 #endif 710 #endif
565#endif 711#endif
566 712
567#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
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#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()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #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 */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 739 #elif defined _WIN32
578 #include <WinNT.h> 740 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_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)
580 #endif 766 #endif
581#endif 767#endif
582 768
583#ifndef ECB_MEMORY_FENCE 769#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 770 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #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)
598 #endif 784 #endif
599#endif 785#endif
600 786
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 789#endif
604 790
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 793#endif
608 794
609/*****************************************************************************/ 795/*****************************************************************************/
610 796
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 797#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 798 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
617#elif ECB_C99 801#elif ECB_C99
618 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
632 816
633#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
636#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))
637 822
638#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
639 824
640#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #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)
642 #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)
643 #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)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 849#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 850 #define ecb_prefetch(addr,rw,locality)
650#endif 851#endif
651 852
652/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
653#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; };
654 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
657#endif 860#endif
658 861
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
659#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 880#endif
881
661#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
663#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
664 897
665#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 899 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 900 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 901 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
683 916
684/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
685#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))
686 /* 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 */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 928 /* no popcountll */
693#else 929#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 931 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
697 { 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
698 int r = 0; 939 int r = 0;
699 940
700 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
701 942
702#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
714#endif 955#endif
715 956
716 return r; 957 return r;
958#endif
717 } 959 }
718 960
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 962 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
722 { 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
723 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
725 } 973 }
726 974
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 976 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
730 { 978 {
731 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 982 x *= 0x01010101;
735 983
736 return x >> 24; 984 return x >> 24;
737 } 985 }
738 986
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 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
742 int r = 0; 995 int r = 0;
743 996
744 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
749 1002
750 return r; 1003 return r;
1004#endif
751 } 1005 }
752 1006
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 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
756 int r = 0; 1015 int r = 0;
757 1016
758 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
759 1018
760 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
761 } 1021 }
762#endif 1022#endif
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
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
763 1058
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1060/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1062ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
769{ 1064{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1066}
772 1067
773ecb_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);
774ecb_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);
775ecb_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);
776ecb_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);
777ecb_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);
778ecb_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);
779ecb_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);
780ecb_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);
781 1076
782ecb_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); }
783ecb_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); }
784ecb_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); }
785ecb_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); }
786ecb_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); }
787ecb_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); }
788ecb_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); }
789ecb_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); }
790 1085
791#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
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #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)))
795#else 1099#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
799 { 1103 {
800 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
801 } 1105 }
802 1106
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
806 { 1110 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1112 }
809 1113
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
813 { 1117 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1119 }
816#endif 1120#endif
817 1121
818#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
820#else 1124#else
821 /* 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 :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1128#endif
825 1129
826/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1132
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1134ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
832{ 1136{
833 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
834 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
835} 1159}
836 1160
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_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; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_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; }
841 1165
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #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))
844#else 1168#else
845 #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)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1186#endif
847 1187
848#if ecb_cplusplus_does_not_suck 1188#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1190 template<typename T, int N>
… …
854 } 1194 }
855#else 1195#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1197#endif
858 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
859#endif 1504#endif
860 1505
861/* ECB.H END */ 1506/* ECB.H END */
862 1507
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architetcure doesn't need memory fences, e.g. because it is 1509/* if your architecture doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev 1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
867 * libev, in which casess the memory fences become nops. 1512 * libev, in which cases the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread, 1513 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences. 1514 * which will then provide the memory fences.
870 */ 1515 */
871# error "memory fences not defined for your architecture, please report" 1516# error "memory fences not defined for your architecture, please report"
872#endif 1517#endif
… …
884#define inline_size ecb_inline 1529#define inline_size ecb_inline
885 1530
886#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
887# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
888#else 1533#else
889# define inline_speed static noinline 1534# define inline_speed noinline static
890#endif 1535#endif
891 1536
892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
893 1538
894#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
941#else 1586#else
942 1587
943#include <float.h> 1588#include <float.h>
944 1589
945/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
946static ev_tstamp noinline 1592static ev_tstamp
947ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
948{ 1594{
949 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
983 1629
984#ifdef __linux 1630#ifdef __linux
985# include <sys/utsname.h> 1631# include <sys/utsname.h>
986#endif 1632#endif
987 1633
988static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
989ev_linux_version (void) 1636ev_linux_version (void)
990{ 1637{
991#ifdef __linux 1638#ifdef __linux
992 unsigned int v = 0; 1639 unsigned int v = 0;
993 struct utsname buf; 1640 struct utsname buf;
… …
1022} 1669}
1023 1670
1024/*****************************************************************************/ 1671/*****************************************************************************/
1025 1672
1026#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1027static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1028ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1029{ 1677{
1030 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1031} 1679}
1032#endif 1680#endif
1033 1681
1034static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1035 1683
1036void ecb_cold 1684ecb_cold
1685void
1037ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1038{ 1687{
1039 syserr_cb = cb; 1688 syserr_cb = cb;
1040} 1689}
1041 1690
1042static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1043ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1044{ 1694{
1045 if (!msg) 1695 if (!msg)
1046 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1047 1697
… …
1060 abort (); 1710 abort ();
1061 } 1711 }
1062} 1712}
1063 1713
1064static void * 1714static void *
1065ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1066{ 1716{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
1070 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1071 * 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
1072 * 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.
1073 */ 1722 */
1074 1723
1075 if (size) 1724 if (size)
1076 return realloc (ptr, size); 1725 return realloc (ptr, size);
1077 1726
1078 free (ptr); 1727 free (ptr);
1079 return 0; 1728 return 0;
1080#endif
1081} 1729}
1082 1730
1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1084 1732
1085void ecb_cold 1733ecb_cold
1734void
1086ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1087{ 1736{
1088 alloc = cb; 1737 alloc = cb;
1089} 1738}
1090 1739
1091inline_speed void * 1740inline_speed void *
… …
1179 #undef VAR 1828 #undef VAR
1180 }; 1829 };
1181 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
1182 1831
1183 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
1184 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1185 1834
1186#else 1835#else
1187 1836
1188 ev_tstamp ev_rt_now; 1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1189 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
1190 #include "ev_vars.h" 1839 #include "ev_vars.h"
1191 #undef VAR 1840 #undef VAR
1192 1841
1193 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
… …
1208 1857
1209/*****************************************************************************/ 1858/*****************************************************************************/
1210 1859
1211#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
1212ev_tstamp 1861ev_tstamp
1213ev_time (void) 1862ev_time (void) EV_NOEXCEPT
1214{ 1863{
1215#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
1216 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
1217 { 1866 {
1218 struct timespec ts; 1867 struct timespec ts;
… …
1242 return ev_time (); 1891 return ev_time ();
1243} 1892}
1244 1893
1245#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
1246ev_tstamp 1895ev_tstamp
1247ev_now (EV_P) 1896ev_now (EV_P) EV_NOEXCEPT
1248{ 1897{
1249 return ev_rt_now; 1898 return ev_rt_now;
1250} 1899}
1251#endif 1900#endif
1252 1901
1253void 1902void
1254ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1255{ 1904{
1256 if (delay > 0.) 1905 if (delay > 0.)
1257 { 1906 {
1258#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
1259 struct timespec ts; 1908 struct timespec ts;
1260 1909
1261 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1262 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1263#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) */
1264 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1265#else 1916#else
1266 struct timeval tv; 1917 struct timeval tv;
1267 1918
1268 /* 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 */
… …
1287 1938
1288 do 1939 do
1289 ncur <<= 1; 1940 ncur <<= 1;
1290 while (cnt > ncur); 1941 while (cnt > ncur);
1291 1942
1292 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1293 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1294 { 1945 {
1295 ncur *= elem; 1946 ncur *= elem;
1296 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1297 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
1299 } 1950 }
1300 1951
1301 return ncur; 1952 return ncur;
1302} 1953}
1303 1954
1304static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1305array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1306{ 1958{
1307 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1308 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1309} 1961}
… …
1312 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1313 1965
1314#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1315 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1316 { \ 1968 { \
1317 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1318 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1319 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1320 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1321 } 1973 }
1322 1974
… …
1334 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
1335 1987
1336/*****************************************************************************/ 1988/*****************************************************************************/
1337 1989
1338/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1339static void noinline 1991noinline
1992static void
1340pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1341{ 1994{
1342} 1995}
1343 1996
1344void noinline 1997noinline
1998void
1345ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1346{ 2000{
1347 W w_ = (W)w; 2001 W w_ = (W)w;
1348 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1349 2003
1350 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
1354 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
1355 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1356 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
1357 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
1358 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
1359} 2015}
1360 2016
1361inline_speed void 2017inline_speed void
1362feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
1363{ 2019{
… …
1409 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
1411} 2067}
1412 2068
1413void 2069void
1414ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1415{ 2071{
1416 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
1417 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
1418} 2074}
1419 2075
… …
1477 2133
1478 fdchangecnt = 0; 2134 fdchangecnt = 0;
1479} 2135}
1480 2136
1481/* something about the given fd changed */ 2137/* something about the given fd changed */
1482inline_size void 2138inline_size
2139void
1483fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1484{ 2141{
1485 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1486 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1487 2144
… …
1492 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1493 } 2150 }
1494} 2151}
1495 2152
1496/* 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 */
1497inline_speed void ecb_cold 2154inline_speed ecb_cold void
1498fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1499{ 2156{
1500 ev_io *w; 2157 ev_io *w;
1501 2158
1502 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1505 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);
1506 } 2163 }
1507} 2164}
1508 2165
1509/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1510inline_size int ecb_cold 2167inline_size ecb_cold int
1511fd_valid (int fd) 2168fd_valid (int fd)
1512{ 2169{
1513#ifdef _WIN32 2170#ifdef _WIN32
1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1515#else 2172#else
1516 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1517#endif 2174#endif
1518} 2175}
1519 2176
1520/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1521static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1522fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1523{ 2181{
1524 int fd; 2182 int fd;
1525 2183
1526 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1528 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1529 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1530} 2188}
1531 2189
1532/* 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 */
1533static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1534fd_enomem (EV_P) 2193fd_enomem (EV_P)
1535{ 2194{
1536 int fd; 2195 int fd;
1537 2196
1538 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1542 break; 2201 break;
1543 } 2202 }
1544} 2203}
1545 2204
1546/* 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 */
1547static void noinline 2206noinline
2207static void
1548fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1549{ 2209{
1550 int fd; 2210 int fd;
1551 2211
1552 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1733 2393
1734/*****************************************************************************/ 2394/*****************************************************************************/
1735 2395
1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 2397
1738static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1739evpipe_init (EV_P) 2400evpipe_init (EV_P)
1740{ 2401{
1741 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1742 { 2403 {
2404 int fds [2];
2405
1743# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1746 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1747 2411
1748 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1749 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1750 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1751 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1752 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));
1753 } 2473 }
1754 else 2474 else
1755# endif 2475#endif
1756 { 2476 {
1757 while (pipe (evpipe)) 2477#ifdef _WIN32
1758 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1759 2479 DWORD sent;
1760 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1761 fd_intern (evpipe [1]); 2481 buf.len = 1;
1762 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1763 } 2483#else
1764
1765 ev_io_start (EV_A_ &pipe_w);
1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1767 }
1768}
1769
1770inline_speed void
1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1772{
1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1790 old_errno = errno; /* save errno because write will clobber it */
1791
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 {
1795 uint64_t counter = 1;
1796 write (evfd, &counter, sizeof (uint64_t));
1797 }
1798 else
1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1806 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1807 } 2486 }
1808 2487
1809 errno = old_errno; 2488 errno = old_errno;
1810 } 2489 }
1811} 2490}
… …
1818 int i; 2497 int i;
1819 2498
1820 if (revents & EV_READ) 2499 if (revents & EV_READ)
1821 { 2500 {
1822#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1823 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1824 { 2503 {
1825 uint64_t counter; 2504 uint64_t counter;
1826 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2506 }
1828 else 2507 else
1829#endif 2508#endif
1830 { 2509 {
1831 char dummy; 2510 char dummy[4];
1832 /* 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
1833 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
1834 } 2521 }
1835 } 2522 }
1836 2523
1837 pipe_write_skipped = 0; 2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1838 2527
1839#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1840 if (sig_pending) 2529 if (sig_pending)
1841 { 2530 {
1842 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1843 2534
1844 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1845 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1846 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1847 } 2538 }
… …
1849 2540
1850#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1851 if (async_pending) 2542 if (async_pending)
1852 { 2543 {
1853 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1854 2547
1855 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1856 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1857 { 2550 {
1858 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1859 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1860 } 2554 }
1861 } 2555 }
1862#endif 2556#endif
1863} 2557}
1864 2558
1865/*****************************************************************************/ 2559/*****************************************************************************/
1866 2560
1867void 2561void
1868ev_feed_signal (int signum) 2562ev_feed_signal (int signum) EV_NOEXCEPT
1869{ 2563{
1870#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1871 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1872 2568
1873 if (!EV_A) 2569 if (!EV_A)
1874 return; 2570 return;
1875#endif 2571#endif
1876 2572
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1882} 2575}
1883 2576
1884static void 2577static void
… …
1889#endif 2582#endif
1890 2583
1891 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1892} 2585}
1893 2586
1894void noinline 2587noinline
2588void
1895ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1896{ 2590{
1897 WL w; 2591 WL w;
1898 2592
1899 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1900 return; 2594 return;
1901 2595
1902 --signum; 2596 --signum;
1903 2597
1904#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1908 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1909 return; 2603 return;
1910#endif 2604#endif
1911 2605
1912 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1913 2608
1914 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1916} 2611}
1917 2612
… …
2015#endif 2710#endif
2016#if EV_USE_SELECT 2711#if EV_USE_SELECT
2017# include "ev_select.c" 2712# include "ev_select.c"
2018#endif 2713#endif
2019 2714
2020int ecb_cold 2715ecb_cold int
2021ev_version_major (void) 2716ev_version_major (void) EV_NOEXCEPT
2022{ 2717{
2023 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2024} 2719}
2025 2720
2026int ecb_cold 2721ecb_cold int
2027ev_version_minor (void) 2722ev_version_minor (void) EV_NOEXCEPT
2028{ 2723{
2029 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2030} 2725}
2031 2726
2032/* 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 */
2033int inline_size ecb_cold 2728inline_size ecb_cold int
2034enable_secure (void) 2729enable_secure (void)
2035{ 2730{
2036#ifdef _WIN32 2731#ifdef _WIN32
2037 return 0; 2732 return 0;
2038#else 2733#else
2039 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2040 || getgid () != getegid (); 2735 || getgid () != getegid ();
2041#endif 2736#endif
2042} 2737}
2043 2738
2044unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2045ev_supported_backends (void) 2741ev_supported_backends (void) EV_NOEXCEPT
2046{ 2742{
2047 unsigned int flags = 0; 2743 unsigned int flags = 0;
2048 2744
2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2050 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2054 2750
2055 return flags; 2751 return flags;
2056} 2752}
2057 2753
2058unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2059ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_NOEXCEPT
2060{ 2757{
2061 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2062 2759
2063#ifndef __NetBSD__ 2760#ifndef __NetBSD__
2064 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
2075#endif 2772#endif
2076 2773
2077 return flags; 2774 return flags;
2078} 2775}
2079 2776
2080unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2081ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_NOEXCEPT
2082{ 2780{
2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2084 2782
2085 /* 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 */
2086 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 */
… …
2088 2786
2089 return flags; 2787 return flags;
2090} 2788}
2091 2789
2092unsigned int 2790unsigned int
2093ev_backend (EV_P) 2791ev_backend (EV_P) EV_NOEXCEPT
2094{ 2792{
2095 return backend; 2793 return backend;
2096} 2794}
2097 2795
2098#if EV_FEATURE_API 2796#if EV_FEATURE_API
2099unsigned int 2797unsigned int
2100ev_iteration (EV_P) 2798ev_iteration (EV_P) EV_NOEXCEPT
2101{ 2799{
2102 return loop_count; 2800 return loop_count;
2103} 2801}
2104 2802
2105unsigned int 2803unsigned int
2106ev_depth (EV_P) 2804ev_depth (EV_P) EV_NOEXCEPT
2107{ 2805{
2108 return loop_depth; 2806 return loop_depth;
2109} 2807}
2110 2808
2111void 2809void
2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 2811{
2114 io_blocktime = interval; 2812 io_blocktime = interval;
2115} 2813}
2116 2814
2117void 2815void
2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2119{ 2817{
2120 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
2121} 2819}
2122 2820
2123void 2821void
2124ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2125{ 2823{
2126 userdata = data; 2824 userdata = data;
2127} 2825}
2128 2826
2129void * 2827void *
2130ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_NOEXCEPT
2131{ 2829{
2132 return userdata; 2830 return userdata;
2133} 2831}
2134 2832
2135void 2833void
2136ev_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_NOEXCEPT
2137{ 2835{
2138 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2139} 2837}
2140 2838
2141void 2839void
2142ev_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_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2143{ 2841{
2144 release_cb = release; 2842 release_cb = release;
2145 acquire_cb = acquire; 2843 acquire_cb = acquire;
2146} 2844}
2147#endif 2845#endif
2148 2846
2149/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2150static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2151loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2152{ 2851{
2153 if (!backend) 2852 if (!backend)
2154 { 2853 {
2155 origflags = flags; 2854 origflags = flags;
2156 2855
… …
2201#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2202 async_pending = 0; 2901 async_pending = 0;
2203#endif 2902#endif
2204 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2206#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif 2909#endif
2209#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2240#endif 2941#endif
2241 } 2942 }
2242} 2943}
2243 2944
2244/* free up a loop structure */ 2945/* free up a loop structure */
2245void ecb_cold 2946ecb_cold
2947void
2246ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2247{ 2949{
2248 int i; 2950 int i;
2249 2951
2250#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2261 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2262 } 2964 }
2263#endif 2965#endif
2264 2966
2265#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2267 { 2969 {
2268 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2270 } 2972 }
2271#endif 2973#endif
… …
2273 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2274 { 2976 {
2275 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2276 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2277 2979
2278#if EV_USE_EVENTFD
2279 if (evfd >= 0)
2280 close (evfd);
2281#endif
2282
2283 if (evpipe [0] >= 0)
2284 {
2285 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2286 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2287 }
2288 } 2982 }
2289 2983
2290#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2292 close (sigfd); 2986 close (sigfd);
… …
2378#endif 3072#endif
2379#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2380 infy_fork (EV_A); 3074 infy_fork (EV_A);
2381#endif 3075#endif
2382 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2383 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2384 { 3079 {
2385 /* 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 */
2386 3081
2387 ev_ref (EV_A); 3082 ev_ref (EV_A);
2388 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2389 3084
2390#if EV_USE_EVENTFD
2391 if (evfd >= 0)
2392 close (evfd);
2393#endif
2394
2395 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2396 {
2397 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2398 EV_WIN32_CLOSE_FD (evpipe [1]);
2399 }
2400 3087
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2402 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2403 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2404 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2405#endif
2406 } 3091 }
3092#endif
2407 3093
2408 postfork = 0; 3094 postfork = 0;
2409} 3095}
2410 3096
2411#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2412 3098
3099ecb_cold
2413struct ev_loop * ecb_cold 3100struct ev_loop *
2414ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_NOEXCEPT
2415{ 3102{
2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2417 3104
2418 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
2419 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
… …
2426} 3113}
2427 3114
2428#endif /* multiplicity */ 3115#endif /* multiplicity */
2429 3116
2430#if EV_VERIFY 3117#if EV_VERIFY
2431static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2432verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2433{ 3121{
2434 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));
2435 3123
2436 if (w->pending) 3124 if (w->pending)
2437 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));
2438} 3126}
2439 3127
2440static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2441verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2442{ 3131{
2443 int i; 3132 int i;
2444 3133
2445 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2450 3139
2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2452 } 3141 }
2453} 3142}
2454 3143
2455static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2456array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2457{ 3147{
2458 while (cnt--) 3148 while (cnt--)
2459 { 3149 {
2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2463} 3153}
2464#endif 3154#endif
2465 3155
2466#if EV_FEATURE_API 3156#if EV_FEATURE_API
2467void ecb_cold 3157void ecb_cold
2468ev_verify (EV_P) 3158ev_verify (EV_P) EV_NOEXCEPT
2469{ 3159{
2470#if EV_VERIFY 3160#if EV_VERIFY
2471 int i; 3161 int i;
2472 WL w; 3162 WL w, w2;
2473 3163
2474 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2475 3165
2476 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2477 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2478 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2479 3169
2480 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2481 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2482 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2483 { 3176 {
2484 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
2485 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));
2486 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));
2487 } 3187 }
3188 }
2488 3189
2489 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2490 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2491 3192
2492#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2538#endif 3239#endif
2539} 3240}
2540#endif 3241#endif
2541 3242
2542#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2543struct ev_loop * ecb_cold 3245struct ev_loop *
2544#else 3246#else
2545int 3247int
2546#endif 3248#endif
2547ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_NOEXCEPT
2548{ 3250{
2549 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
2550 { 3252 {
2551#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
2552 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2571 3273
2572 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
2573} 3275}
2574 3276
2575void 3277void
2576ev_loop_fork (EV_P) 3278ev_loop_fork (EV_P) EV_NOEXCEPT
2577{ 3279{
2578 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2579} 3281}
2580 3282
2581/*****************************************************************************/ 3283/*****************************************************************************/
2582 3284
2583void 3285void
… …
2585{ 3287{
2586 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2587} 3289}
2588 3290
2589unsigned int 3291unsigned int
2590ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_NOEXCEPT
2591{ 3293{
2592 int pri; 3294 int pri;
2593 unsigned int count = 0; 3295 unsigned int count = 0;
2594 3296
2595 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2596 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2597 3299
2598 return count; 3300 return count;
2599} 3301}
2600 3302
2601void noinline 3303noinline
3304void
2602ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2603{ 3306{
2604 int pri; 3307 pendingpri = NUMPRI;
2605 3308
2606 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2607 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2608 { 3315 {
2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2610 3317
2611 p->w->pending = 0; 3318 p->w->pending = 0;
2612 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2613 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2614 } 3321 }
3322 }
3323 while (pendingpri);
2615} 3324}
2616 3325
2617#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2618/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2619/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2677 } 3386 }
2678} 3387}
2679 3388
2680#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
2681 3390
2682static void noinline 3391noinline
3392static void
2683periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
2684{ 3394{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 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);
2687 3397
… …
2709{ 3419{
2710 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2711 3421
2712 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2713 { 3423 {
2714 int feed_count = 0;
2715
2716 do 3424 do
2717 { 3425 {
2718 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2719 3427
2720 /*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)));*/
… …
2747 } 3455 }
2748} 3456}
2749 3457
2750/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2751/* 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? */
2752static void noinline ecb_cold 3460noinline ecb_cold
3461static void
2753periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2754{ 3463{
2755 int i; 3464 int i;
2756 3465
2757 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2770 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2771} 3480}
2772#endif 3481#endif
2773 3482
2774/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2775static void noinline ecb_cold 3484noinline ecb_cold
3485static void
2776timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2777{ 3487{
2778 int i; 3488 int i;
2779 3489
2780 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2854 3564
2855 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2856 } 3566 }
2857} 3567}
2858 3568
2859void 3569int
2860ev_run (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2861{ 3571{
2862#if EV_FEATURE_API 3572#if EV_FEATURE_API
2863 ++loop_depth; 3573 ++loop_depth;
2864#endif 3574#endif
… …
2977#endif 3687#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2979 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981 3691
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2983 3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
2984 if (pipe_write_skipped) 3695 if (pipe_write_skipped)
2985 { 3696 {
2986 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)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 } 3699 }
… …
3021 loop_done = EVBREAK_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
3022 3733
3023#if EV_FEATURE_API 3734#if EV_FEATURE_API
3024 --loop_depth; 3735 --loop_depth;
3025#endif 3736#endif
3026}
3027 3737
3738 return activecnt;
3739}
3740
3028void 3741void
3029ev_break (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_NOEXCEPT
3030{ 3743{
3031 loop_done = how; 3744 loop_done = how;
3032} 3745}
3033 3746
3034void 3747void
3035ev_ref (EV_P) 3748ev_ref (EV_P) EV_NOEXCEPT
3036{ 3749{
3037 ++activecnt; 3750 ++activecnt;
3038} 3751}
3039 3752
3040void 3753void
3041ev_unref (EV_P) 3754ev_unref (EV_P) EV_NOEXCEPT
3042{ 3755{
3043 --activecnt; 3756 --activecnt;
3044} 3757}
3045 3758
3046void 3759void
3047ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_NOEXCEPT
3048{ 3761{
3049 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
3050} 3763}
3051 3764
3052void 3765void
3053ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_NOEXCEPT
3054{ 3767{
3055 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
3056} 3769}
3057 3770
3058void 3771void
3059ev_resume (EV_P) 3772ev_resume (EV_P) EV_NOEXCEPT
3060{ 3773{
3061 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
3062 3775
3063 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
3064 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3103 w->pending = 0; 3816 w->pending = 0;
3104 } 3817 }
3105} 3818}
3106 3819
3107int 3820int
3108ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3109{ 3822{
3110 W w_ = (W)w; 3823 W w_ = (W)w;
3111 int pending = w_->pending; 3824 int pending = w_->pending;
3112 3825
3113 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
3145 w->active = 0; 3858 w->active = 0;
3146} 3859}
3147 3860
3148/*****************************************************************************/ 3861/*****************************************************************************/
3149 3862
3150void noinline 3863noinline
3864void
3151ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3152{ 3866{
3153 int fd = w->fd; 3867 int fd = w->fd;
3154 3868
3155 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
3156 return; 3870 return;
… …
3162 3876
3163 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3165 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
3166 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
3167 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);
3168 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3169 3886
3170 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3171} 3888}
3172 3889
3173void noinline 3890noinline
3891void
3174ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3175{ 3893{
3176 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3177 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3178 return; 3896 return;
3179 3897
… …
3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3188 3906
3189 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3190} 3908}
3191 3909
3192void noinline 3910noinline
3911void
3193ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3194{ 3913{
3195 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3196 return; 3915 return;
3197 3916
3198 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
3211 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3212 3931
3213 /*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));*/
3214} 3933}
3215 3934
3216void noinline 3935noinline
3936void
3217ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3218{ 3938{
3219 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3220 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3221 return; 3941 return;
3222 3942
… …
3241 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3242 3962
3243 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3244} 3964}
3245 3965
3246void noinline 3966noinline
3967void
3247ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3248{ 3969{
3249 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
3250 3973
3251 if (ev_is_active (w)) 3974 if (ev_is_active (w))
3252 { 3975 {
3253 if (w->repeat) 3976 if (w->repeat)
3254 { 3977 {
… …
3267 3990
3268 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3269} 3992}
3270 3993
3271ev_tstamp 3994ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 3996{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3275} 3998}
3276 3999
3277#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3278void noinline 4001noinline
4002void
3279ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3280{ 4004{
3281 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3282 return; 4006 return;
3283 4007
3284 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
… …
3303 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3304 4028
3305 /*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));*/
3306} 4030}
3307 4031
3308void noinline 4032noinline
4033void
3309ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3310{ 4035{
3311 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3313 return; 4038 return;
3314 4039
… …
3331 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3332 4057
3333 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3334} 4059}
3335 4060
3336void noinline 4061noinline
4062void
3337ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3338{ 4064{
3339 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3340 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3341 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
3342} 4068}
… …
3346# define SA_RESTART 0 4072# define SA_RESTART 0
3347#endif 4073#endif
3348 4074
3349#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3350 4076
3351void noinline 4077noinline
4078void
3352ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3353{ 4080{
3354 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3355 return; 4082 return;
3356 4083
3357 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));
… …
3359#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
3360 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",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3362 4089
3363 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
3364#endif 4092#endif
3365 4093
3366 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3367 4095
3368#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
3427 } 4155 }
3428 4156
3429 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3430} 4158}
3431 4159
3432void noinline 4160noinline
4161void
3433ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3434{ 4163{
3435 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3436 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3437 return; 4166 return;
3438 4167
… …
3469#endif 4198#endif
3470 4199
3471#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
3472 4201
3473void 4202void
3474ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3475{ 4204{
3476#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
3477 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));
3478#endif 4207#endif
3479 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
… …
3486 4215
3487 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3488} 4217}
3489 4218
3490void 4219void
3491ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3492{ 4221{
3493 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3495 return; 4224 return;
3496 4225
… …
3513 4242
3514#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3515#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3516#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3517 4246
3518static 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);
3519 4248
3520#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3521 4250
3522/* 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 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3524 4253
3525static void noinline 4254noinline
4255static void
3526infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3527{ 4257{
3528 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);
3529 4262
3530 if (w->wd >= 0) 4263 if (w->wd >= 0)
3531 { 4264 {
3532 struct statfs sfs; 4265 struct statfs sfs;
3533 4266
… …
3537 4270
3538 if (!fs_2625) 4271 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
3542 || 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 */
3543 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
3546 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else 4287 else
3549 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 */
3550 } 4289 }
… …
3585 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3586 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
3587 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3588} 4327}
3589 4328
3590static void noinline 4329noinline
4330static void
3591infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
3592{ 4332{
3593 int slot; 4333 int slot;
3594 int wd = w->wd; 4334 int wd = w->wd;
3595 4335
… …
3602 4342
3603 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3604 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3605} 4345}
3606 4346
3607static void noinline 4347noinline
4348static void
3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3609{ 4350{
3610 if (slot < 0) 4351 if (slot < 0)
3611 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3648 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3650 } 4391 }
3651} 4392}
3652 4393
3653inline_size void ecb_cold 4394inline_size ecb_cold
4395void
3654ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3655{ 4397{
3656 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3657 * 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
3658 */ 4400 */
… …
3663} 4405}
3664 4406
3665inline_size int 4407inline_size int
3666infy_newfd (void) 4408infy_newfd (void)
3667{ 4409{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0) 4412 if (fd >= 0)
3671 return fd; 4413 return fd;
3672#endif 4414#endif
3673 return inotify_init (); 4415 return inotify_init ();
… …
3748#else 4490#else
3749# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3750#endif 4492#endif
3751 4493
3752void 4494void
3753ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3754{ 4496{
3755 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3756 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3757 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3758 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3759} 4501}
3760 4502
3761static void noinline 4503noinline
4504static void
3762stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3763{ 4506{
3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3765 4508
3766 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3797 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3798 } 4541 }
3799} 4542}
3800 4543
3801void 4544void
3802ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3803{ 4546{
3804 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3805 return; 4548 return;
3806 4549
3807 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3828 4571
3829 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3830} 4573}
3831 4574
3832void 4575void
3833ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3834{ 4577{
3835 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3837 return; 4580 return;
3838 4581
… …
3854} 4597}
3855#endif 4598#endif
3856 4599
3857#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3858void 4601void
3859ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3860{ 4603{
3861 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3862 return; 4605 return;
3863 4606
3864 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3877 4620
3878 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3879} 4622}
3880 4623
3881void 4624void
3882ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3883{ 4626{
3884 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3886 return; 4629 return;
3887 4630
… …
3901} 4644}
3902#endif 4645#endif
3903 4646
3904#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
3905void 4648void
3906ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3907{ 4650{
3908 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3909 return; 4652 return;
3910 4653
3911 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3916 4659
3917 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3918} 4661}
3919 4662
3920void 4663void
3921ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3922{ 4665{
3923 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3924 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3925 return; 4668 return;
3926 4669
… …
3939} 4682}
3940#endif 4683#endif
3941 4684
3942#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
3943void 4686void
3944ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3945{ 4688{
3946 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3947 return; 4690 return;
3948 4691
3949 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3954 4697
3955 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3956} 4699}
3957 4700
3958void 4701void
3959ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3960{ 4703{
3961 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3962 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3963 return; 4706 return;
3964 4707
… …
3976 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3977} 4720}
3978#endif 4721#endif
3979 4722
3980#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3981void noinline 4724noinline
4725void
3982ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3983{ 4727{
3984 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
3985} 4729}
3986 4730
3987static void 4731static void
… …
4035 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
4036} 4780}
4037#endif 4781#endif
4038 4782
4039void 4783void
4040ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4041{ 4785{
4042 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
4043 return; 4787 return;
4044 4788
4045 { 4789 {
… …
4066 4810
4067 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
4068} 4812}
4069 4813
4070void 4814void
4071ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4072{ 4816{
4073 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
4074 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
4075 return; 4819 return;
4076 4820
… …
4086} 4830}
4087#endif 4831#endif
4088 4832
4089#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
4090void 4834void
4091ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4092{ 4836{
4093 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4094 return; 4838 return;
4095 4839
4096 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
4101 4845
4102 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
4103} 4847}
4104 4848
4105void 4849void
4106ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4107{ 4851{
4108 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
4109 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
4110 return; 4854 return;
4111 4855
… …
4124} 4868}
4125#endif 4869#endif
4126 4870
4127#if EV_CLEANUP_ENABLE 4871#if EV_CLEANUP_ENABLE
4128void 4872void
4129ev_cleanup_start (EV_P_ ev_cleanup *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4130{ 4874{
4131 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
4132 return; 4876 return;
4133 4877
4134 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
… …
4141 ev_unref (EV_A); 4885 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4143} 4887}
4144 4888
4145void 4889void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w) 4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4147{ 4891{
4148 clear_pending (EV_A_ (W)w); 4892 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w))) 4893 if (expect_false (!ev_is_active (w)))
4150 return; 4894 return;
4151 4895
… …
4165} 4909}
4166#endif 4910#endif
4167 4911
4168#if EV_ASYNC_ENABLE 4912#if EV_ASYNC_ENABLE
4169void 4913void
4170ev_async_start (EV_P_ ev_async *w) 4914ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4171{ 4915{
4172 if (expect_false (ev_is_active (w))) 4916 if (expect_false (ev_is_active (w)))
4173 return; 4917 return;
4174 4918
4175 w->sent = 0; 4919 w->sent = 0;
… …
4184 4928
4185 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4186} 4930}
4187 4931
4188void 4932void
4189ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4190{ 4934{
4191 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
4192 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
4193 return; 4937 return;
4194 4938
… …
4205 4949
4206 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
4207} 4951}
4208 4952
4209void 4953void
4210ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4211{ 4955{
4212 w->sent = 1; 4956 w->sent = 1;
4213 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
4214} 4958}
4215#endif 4959#endif
… …
4252 4996
4253 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));
4254} 4998}
4255 4999
4256void 5000void
4257ev_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_NOEXCEPT
4258{ 5002{
4259 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));
4260 5004
4261 if (expect_false (!once)) 5005 if (expect_false (!once))
4262 { 5006 {
… …
4283} 5027}
4284 5028
4285/*****************************************************************************/ 5029/*****************************************************************************/
4286 5030
4287#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4288void ecb_cold 5032ecb_cold
5033void
4289ev_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_NOEXCEPT
4290{ 5035{
4291 int i, j; 5036 int i, j;
4292 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4293 5038
4294 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
4400 5145
4401#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
4402 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
4403#endif 5148#endif
4404 5149
4405EV_CPP(})
4406

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