ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.394 by root, Thu Aug 4 14:49:27 2011 UTC vs.
Revision 1.485 by root, Mon Aug 13 10:01:19 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 __x86 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
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
864# undef ECB_MEMORY_FENCE 1519#ifndef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE 1520# define ECB_MEMORY_FENCE do { } while (0)
866# undef ECB_MEMORY_FENCE_RELEASE 1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
867#endif 1523#endif
868 1524
869#define expect_false(cond) ecb_expect_false (cond) 1525#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond) 1526#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline 1527#define noinline ecb_noinline
… …
873#define inline_size ecb_inline 1529#define inline_size ecb_inline
874 1530
875#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
876# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
877#else 1533#else
878# define inline_speed static noinline 1534# define inline_speed noinline static
879#endif 1535#endif
880 1536
881#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
882 1538
883#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
930#else 1586#else
931 1587
932#include <float.h> 1588#include <float.h>
933 1589
934/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
935static ev_tstamp noinline 1592static ev_tstamp
936ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
937{ 1594{
938 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
939#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
940 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
972 1629
973#ifdef __linux 1630#ifdef __linux
974# include <sys/utsname.h> 1631# include <sys/utsname.h>
975#endif 1632#endif
976 1633
977static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
978ev_linux_version (void) 1636ev_linux_version (void)
979{ 1637{
980#ifdef __linux 1638#ifdef __linux
981 unsigned int v = 0; 1639 unsigned int v = 0;
982 struct utsname buf; 1640 struct utsname buf;
… …
1011} 1669}
1012 1670
1013/*****************************************************************************/ 1671/*****************************************************************************/
1014 1672
1015#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1016static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1017ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1018{ 1677{
1019 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1020} 1679}
1021#endif 1680#endif
1022 1681
1023static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1024 1683
1025void ecb_cold 1684ecb_cold
1685void
1026ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1027{ 1687{
1028 syserr_cb = cb; 1688 syserr_cb = cb;
1029} 1689}
1030 1690
1031static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1032ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1033{ 1694{
1034 if (!msg) 1695 if (!msg)
1035 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1036 1697
… …
1049 abort (); 1710 abort ();
1050 } 1711 }
1051} 1712}
1052 1713
1053static void * 1714static void *
1054ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
1055{ 1716{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
1059 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1060 * 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
1061 * 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.
1062 */ 1722 */
1063 1723
1064 if (size) 1724 if (size)
1065 return realloc (ptr, size); 1725 return realloc (ptr, size);
1066 1726
1067 free (ptr); 1727 free (ptr);
1068 return 0; 1728 return 0;
1069#endif
1070} 1729}
1071 1730
1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1073 1732
1074void ecb_cold 1733ecb_cold
1734void
1075ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1076{ 1736{
1077 alloc = cb; 1737 alloc = cb;
1078} 1738}
1079 1739
1080inline_speed void * 1740inline_speed void *
… …
1168 #undef VAR 1828 #undef VAR
1169 }; 1829 };
1170 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
1171 1831
1172 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
1173 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 */
1174 1834
1175#else 1835#else
1176 1836
1177 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 */
1178 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
1179 #include "ev_vars.h" 1839 #include "ev_vars.h"
1180 #undef VAR 1840 #undef VAR
1181 1841
1182 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
… …
1197 1857
1198/*****************************************************************************/ 1858/*****************************************************************************/
1199 1859
1200#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
1201ev_tstamp 1861ev_tstamp
1202ev_time (void) 1862ev_time (void) EV_THROW
1203{ 1863{
1204#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
1205 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
1206 { 1866 {
1207 struct timespec ts; 1867 struct timespec ts;
… …
1231 return ev_time (); 1891 return ev_time ();
1232} 1892}
1233 1893
1234#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
1235ev_tstamp 1895ev_tstamp
1236ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
1237{ 1897{
1238 return ev_rt_now; 1898 return ev_rt_now;
1239} 1899}
1240#endif 1900#endif
1241 1901
1242void 1902void
1243ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
1244{ 1904{
1245 if (delay > 0.) 1905 if (delay > 0.)
1246 { 1906 {
1247#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
1248 struct timespec ts; 1908 struct timespec ts;
1249 1909
1250 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1251 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1252#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) */
1253 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1254#else 1916#else
1255 struct timeval tv; 1917 struct timeval tv;
1256 1918
1257 /* 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 */
… …
1276 1938
1277 do 1939 do
1278 ncur <<= 1; 1940 ncur <<= 1;
1279 while (cnt > ncur); 1941 while (cnt > ncur);
1280 1942
1281 /* 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 */
1282 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1283 { 1945 {
1284 ncur *= elem; 1946 ncur *= elem;
1285 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);
1286 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
1288 } 1950 }
1289 1951
1290 return ncur; 1952 return ncur;
1291} 1953}
1292 1954
1293static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1294array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1295{ 1958{
1296 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1297 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1298} 1961}
… …
1301 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1302 1965
1303#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1304 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1305 { \ 1968 { \
1306 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1307 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1308 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1309 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1310 } 1973 }
1311 1974
… …
1323 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
1324 1987
1325/*****************************************************************************/ 1988/*****************************************************************************/
1326 1989
1327/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1328static void noinline 1991noinline
1992static void
1329pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1330{ 1994{
1331} 1995}
1332 1996
1333void noinline 1997noinline
1998void
1334ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1335{ 2000{
1336 W w_ = (W)w; 2001 W w_ = (W)w;
1337 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1338 2003
1339 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
1343 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
1344 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1345 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
1346 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
1347 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
1348} 2015}
1349 2016
1350inline_speed void 2017inline_speed void
1351feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
1352{ 2019{
… …
1398 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
1400} 2067}
1401 2068
1402void 2069void
1403ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1404{ 2071{
1405 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
1406 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
1407} 2074}
1408 2075
… …
1466 2133
1467 fdchangecnt = 0; 2134 fdchangecnt = 0;
1468} 2135}
1469 2136
1470/* something about the given fd changed */ 2137/* something about the given fd changed */
1471inline_size void 2138inline_size
2139void
1472fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1473{ 2141{
1474 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1475 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1476 2144
… …
1481 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1482 } 2150 }
1483} 2151}
1484 2152
1485/* 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 */
1486inline_speed void ecb_cold 2154inline_speed ecb_cold void
1487fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1488{ 2156{
1489 ev_io *w; 2157 ev_io *w;
1490 2158
1491 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1494 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);
1495 } 2163 }
1496} 2164}
1497 2165
1498/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1499inline_size int ecb_cold 2167inline_size ecb_cold int
1500fd_valid (int fd) 2168fd_valid (int fd)
1501{ 2169{
1502#ifdef _WIN32 2170#ifdef _WIN32
1503 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1504#else 2172#else
1505 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1506#endif 2174#endif
1507} 2175}
1508 2176
1509/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1510static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1511fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1512{ 2181{
1513 int fd; 2182 int fd;
1514 2183
1515 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1517 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1518 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1519} 2188}
1520 2189
1521/* 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 */
1522static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1523fd_enomem (EV_P) 2193fd_enomem (EV_P)
1524{ 2194{
1525 int fd; 2195 int fd;
1526 2196
1527 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1531 break; 2201 break;
1532 } 2202 }
1533} 2203}
1534 2204
1535/* 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 */
1536static void noinline 2206noinline
2207static void
1537fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1538{ 2209{
1539 int fd; 2210 int fd;
1540 2211
1541 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1722 2393
1723/*****************************************************************************/ 2394/*****************************************************************************/
1724 2395
1725#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1726 2397
1727static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1728evpipe_init (EV_P) 2400evpipe_init (EV_P)
1729{ 2401{
1730 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1731 { 2403 {
2404 int fds [2];
2405
1732# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1735 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1736 2411
1737 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1738 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1739 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1740 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1741 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));
1742 } 2473 }
1743 else 2474 else
1744# endif 2475#endif
1745 { 2476 {
1746 while (pipe (evpipe)) 2477#ifdef _WIN32
1747 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1748 2479 DWORD sent;
1749 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1750 fd_intern (evpipe [1]); 2481 buf.len = 1;
1751 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1752 } 2483#else
1753
1754 ev_io_start (EV_A_ &pipe_w);
1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1756 }
1757}
1758
1759inline_speed void
1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1761{
1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1779 old_errno = errno; /* save errno because write will clobber it */
1780
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 {
1784 uint64_t counter = 1;
1785 write (evfd, &counter, sizeof (uint64_t));
1786 }
1787 else
1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1795 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1796 } 2486 }
1797 2487
1798 errno = old_errno; 2488 errno = old_errno;
1799 } 2489 }
1800} 2490}
… …
1807 int i; 2497 int i;
1808 2498
1809 if (revents & EV_READ) 2499 if (revents & EV_READ)
1810 { 2500 {
1811#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1812 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1813 { 2503 {
1814 uint64_t counter; 2504 uint64_t counter;
1815 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1816 } 2506 }
1817 else 2507 else
1818#endif 2508#endif
1819 { 2509 {
1820 char dummy; 2510 char dummy[4];
1821 /* 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
1822 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
1823 } 2521 }
1824 } 2522 }
1825 2523
1826 pipe_write_skipped = 0; 2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1827 2527
1828#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1829 if (sig_pending) 2529 if (sig_pending)
1830 { 2530 {
1831 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1832 2534
1833 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1834 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1835 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1836 } 2538 }
… …
1838 2540
1839#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1840 if (async_pending) 2542 if (async_pending)
1841 { 2543 {
1842 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1843 2547
1844 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1845 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1846 { 2550 {
1847 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1848 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1849 } 2554 }
1850 } 2555 }
1851#endif 2556#endif
1852} 2557}
1853 2558
1854/*****************************************************************************/ 2559/*****************************************************************************/
1855 2560
1856void 2561void
1857ev_feed_signal (int signum) 2562ev_feed_signal (int signum) EV_THROW
1858{ 2563{
1859#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1860 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1861 2568
1862 if (!EV_A) 2569 if (!EV_A)
1863 return; 2570 return;
1864#endif 2571#endif
1865 2572
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1871} 2575}
1872 2576
1873static void 2577static void
… …
1878#endif 2582#endif
1879 2583
1880 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1881} 2585}
1882 2586
1883void noinline 2587noinline
2588void
1884ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1885{ 2590{
1886 WL w; 2591 WL w;
1887 2592
1888 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1889 return; 2594 return;
1890 2595
1891 --signum; 2596 --signum;
1892 2597
1893#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1897 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1898 return; 2603 return;
1899#endif 2604#endif
1900 2605
1901 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1902 2608
1903 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1905} 2611}
1906 2612
… …
2004#endif 2710#endif
2005#if EV_USE_SELECT 2711#if EV_USE_SELECT
2006# include "ev_select.c" 2712# include "ev_select.c"
2007#endif 2713#endif
2008 2714
2009int ecb_cold 2715ecb_cold int
2010ev_version_major (void) 2716ev_version_major (void) EV_THROW
2011{ 2717{
2012 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2013} 2719}
2014 2720
2015int ecb_cold 2721ecb_cold int
2016ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
2017{ 2723{
2018 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2019} 2725}
2020 2726
2021/* 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 */
2022int inline_size ecb_cold 2728inline_size ecb_cold int
2023enable_secure (void) 2729enable_secure (void)
2024{ 2730{
2025#ifdef _WIN32 2731#ifdef _WIN32
2026 return 0; 2732 return 0;
2027#else 2733#else
2028 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2029 || getgid () != getegid (); 2735 || getgid () != getegid ();
2030#endif 2736#endif
2031} 2737}
2032 2738
2033unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2034ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
2035{ 2742{
2036 unsigned int flags = 0; 2743 unsigned int flags = 0;
2037 2744
2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2039 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2042 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2043 2750
2044 return flags; 2751 return flags;
2045} 2752}
2046 2753
2047unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2048ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
2049{ 2757{
2050 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2051 2759
2052#ifndef __NetBSD__ 2760#ifndef __NetBSD__
2053 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
2064#endif 2772#endif
2065 2773
2066 return flags; 2774 return flags;
2067} 2775}
2068 2776
2069unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2070ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
2071{ 2780{
2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2073 2782
2074 /* 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 */
2075 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 */
… …
2077 2786
2078 return flags; 2787 return flags;
2079} 2788}
2080 2789
2081unsigned int 2790unsigned int
2082ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
2083{ 2792{
2084 return backend; 2793 return backend;
2085} 2794}
2086 2795
2087#if EV_FEATURE_API 2796#if EV_FEATURE_API
2088unsigned int 2797unsigned int
2089ev_iteration (EV_P) 2798ev_iteration (EV_P) EV_THROW
2090{ 2799{
2091 return loop_count; 2800 return loop_count;
2092} 2801}
2093 2802
2094unsigned int 2803unsigned int
2095ev_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
2096{ 2805{
2097 return loop_depth; 2806 return loop_depth;
2098} 2807}
2099 2808
2100void 2809void
2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2102{ 2811{
2103 io_blocktime = interval; 2812 io_blocktime = interval;
2104} 2813}
2105 2814
2106void 2815void
2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2108{ 2817{
2109 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
2110} 2819}
2111 2820
2112void 2821void
2113ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
2114{ 2823{
2115 userdata = data; 2824 userdata = data;
2116} 2825}
2117 2826
2118void * 2827void *
2119ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
2120{ 2829{
2121 return userdata; 2830 return userdata;
2122} 2831}
2123 2832
2124void 2833void
2125ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2126{ 2835{
2127 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2128} 2837}
2129 2838
2130void 2839void
2131ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2132{ 2841{
2133 release_cb = release; 2842 release_cb = release;
2134 acquire_cb = acquire; 2843 acquire_cb = acquire;
2135} 2844}
2136#endif 2845#endif
2137 2846
2138/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2139static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2140loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2141{ 2851{
2142 if (!backend) 2852 if (!backend)
2143 { 2853 {
2144 origflags = flags; 2854 origflags = flags;
2145 2855
… …
2190#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2191 async_pending = 0; 2901 async_pending = 0;
2192#endif 2902#endif
2193 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2195#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif 2909#endif
2198#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2229#endif 2941#endif
2230 } 2942 }
2231} 2943}
2232 2944
2233/* free up a loop structure */ 2945/* free up a loop structure */
2234void ecb_cold 2946ecb_cold
2947void
2235ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2236{ 2949{
2237 int i; 2950 int i;
2238 2951
2239#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2250 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2251 } 2964 }
2252#endif 2965#endif
2253 2966
2254#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2256 { 2969 {
2257 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2259 } 2972 }
2260#endif 2973#endif
… …
2262 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2263 { 2976 {
2264 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2265 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2266 2979
2267#if EV_USE_EVENTFD
2268 if (evfd >= 0)
2269 close (evfd);
2270#endif
2271
2272 if (evpipe [0] >= 0)
2273 {
2274 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2275 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2276 }
2277 } 2982 }
2278 2983
2279#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2281 close (sigfd); 2986 close (sigfd);
… …
2367#endif 3072#endif
2368#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2369 infy_fork (EV_A); 3074 infy_fork (EV_A);
2370#endif 3075#endif
2371 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2372 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2373 { 3079 {
2374 /* 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 */
2375 3081
2376 ev_ref (EV_A); 3082 ev_ref (EV_A);
2377 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2378 3084
2379#if EV_USE_EVENTFD
2380 if (evfd >= 0)
2381 close (evfd);
2382#endif
2383
2384 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2385 {
2386 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2387 EV_WIN32_CLOSE_FD (evpipe [1]);
2388 }
2389 3087
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2391 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2392 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2393 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2394#endif
2395 } 3091 }
3092#endif
2396 3093
2397 postfork = 0; 3094 postfork = 0;
2398} 3095}
2399 3096
2400#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2401 3098
3099ecb_cold
2402struct ev_loop * ecb_cold 3100struct ev_loop *
2403ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
2404{ 3102{
2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2406 3104
2407 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
2408 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
… …
2415} 3113}
2416 3114
2417#endif /* multiplicity */ 3115#endif /* multiplicity */
2418 3116
2419#if EV_VERIFY 3117#if EV_VERIFY
2420static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2421verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2422{ 3121{
2423 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));
2424 3123
2425 if (w->pending) 3124 if (w->pending)
2426 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));
2427} 3126}
2428 3127
2429static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2430verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2431{ 3131{
2432 int i; 3132 int i;
2433 3133
2434 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2439 3139
2440 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2441 } 3141 }
2442} 3142}
2443 3143
2444static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2445array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2446{ 3147{
2447 while (cnt--) 3148 while (cnt--)
2448 { 3149 {
2449 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2452} 3153}
2453#endif 3154#endif
2454 3155
2455#if EV_FEATURE_API 3156#if EV_FEATURE_API
2456void ecb_cold 3157void ecb_cold
2457ev_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
2458{ 3159{
2459#if EV_VERIFY 3160#if EV_VERIFY
2460 int i; 3161 int i;
2461 WL w; 3162 WL w, w2;
2462 3163
2463 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2464 3165
2465 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2466 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2468 3169
2469 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2470 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2471 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2472 { 3176 {
2473 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
2474 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));
2475 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));
2476 } 3187 }
3188 }
2477 3189
2478 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2479 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2480 3192
2481#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2527#endif 3239#endif
2528} 3240}
2529#endif 3241#endif
2530 3242
2531#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2532struct ev_loop * ecb_cold 3245struct ev_loop *
2533#else 3246#else
2534int 3247int
2535#endif 3248#endif
2536ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
2537{ 3250{
2538 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
2539 { 3252 {
2540#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
2541 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2560 3273
2561 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
2562} 3275}
2563 3276
2564void 3277void
2565ev_loop_fork (EV_P) 3278ev_loop_fork (EV_P) EV_THROW
2566{ 3279{
2567 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2568} 3281}
2569 3282
2570/*****************************************************************************/ 3283/*****************************************************************************/
2571 3284
2572void 3285void
… …
2574{ 3287{
2575 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2576} 3289}
2577 3290
2578unsigned int 3291unsigned int
2579ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
2580{ 3293{
2581 int pri; 3294 int pri;
2582 unsigned int count = 0; 3295 unsigned int count = 0;
2583 3296
2584 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2585 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2586 3299
2587 return count; 3300 return count;
2588} 3301}
2589 3302
2590void noinline 3303noinline
3304void
2591ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2592{ 3306{
2593 int pri; 3307 pendingpri = NUMPRI;
2594 3308
2595 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2596 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2597 { 3315 {
2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2599 3317
2600 p->w->pending = 0; 3318 p->w->pending = 0;
2601 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2602 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2603 } 3321 }
3322 }
3323 while (pendingpri);
2604} 3324}
2605 3325
2606#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2607/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2666 } 3386 }
2667} 3387}
2668 3388
2669#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
2670 3390
2671static void noinline 3391noinline
3392static void
2672periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
2673{ 3394{
2674 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2675 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);
2676 3397
… …
2698{ 3419{
2699 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2700 3421
2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2702 { 3423 {
2703 int feed_count = 0;
2704
2705 do 3424 do
2706 { 3425 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708 3427
2709 /*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)));*/
… …
2736 } 3455 }
2737} 3456}
2738 3457
2739/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2740/* 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? */
2741static void noinline ecb_cold 3460noinline ecb_cold
3461static void
2742periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2743{ 3463{
2744 int i; 3464 int i;
2745 3465
2746 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2759 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2760} 3480}
2761#endif 3481#endif
2762 3482
2763/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2764static void noinline ecb_cold 3484noinline ecb_cold
3485static void
2765timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2766{ 3487{
2767 int i; 3488 int i;
2768 3489
2769 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2843 3564
2844 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2845 } 3566 }
2846} 3567}
2847 3568
2848void 3569int
2849ev_run (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2850{ 3571{
2851#if EV_FEATURE_API 3572#if EV_FEATURE_API
2852 ++loop_depth; 3573 ++loop_depth;
2853#endif 3574#endif
… …
2966#endif 3687#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2968 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970 3691
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2972 3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
2973 if (pipe_write_skipped) 3695 if (pipe_write_skipped)
2974 { 3696 {
2975 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)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 } 3699 }
… …
3010 loop_done = EVBREAK_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
3011 3733
3012#if EV_FEATURE_API 3734#if EV_FEATURE_API
3013 --loop_depth; 3735 --loop_depth;
3014#endif 3736#endif
3015}
3016 3737
3738 return activecnt;
3739}
3740
3017void 3741void
3018ev_break (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_THROW
3019{ 3743{
3020 loop_done = how; 3744 loop_done = how;
3021} 3745}
3022 3746
3023void 3747void
3024ev_ref (EV_P) 3748ev_ref (EV_P) EV_THROW
3025{ 3749{
3026 ++activecnt; 3750 ++activecnt;
3027} 3751}
3028 3752
3029void 3753void
3030ev_unref (EV_P) 3754ev_unref (EV_P) EV_THROW
3031{ 3755{
3032 --activecnt; 3756 --activecnt;
3033} 3757}
3034 3758
3035void 3759void
3036ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_THROW
3037{ 3761{
3038 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
3039} 3763}
3040 3764
3041void 3765void
3042ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_THROW
3043{ 3767{
3044 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
3045} 3769}
3046 3770
3047void 3771void
3048ev_resume (EV_P) 3772ev_resume (EV_P) EV_THROW
3049{ 3773{
3050 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
3051 3775
3052 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3092 w->pending = 0; 3816 w->pending = 0;
3093 } 3817 }
3094} 3818}
3095 3819
3096int 3820int
3097ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_THROW
3098{ 3822{
3099 W w_ = (W)w; 3823 W w_ = (W)w;
3100 int pending = w_->pending; 3824 int pending = w_->pending;
3101 3825
3102 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
3134 w->active = 0; 3858 w->active = 0;
3135} 3859}
3136 3860
3137/*****************************************************************************/ 3861/*****************************************************************************/
3138 3862
3139void noinline 3863noinline
3864void
3140ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
3141{ 3866{
3142 int fd = w->fd; 3867 int fd = w->fd;
3143 3868
3144 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
3145 return; 3870 return;
… …
3151 3876
3152 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3154 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
3155 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
3156 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);
3157 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3158 3886
3159 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3160} 3888}
3161 3889
3162void noinline 3890noinline
3891void
3163ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
3164{ 3893{
3165 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3167 return; 3896 return;
3168 3897
… …
3176 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3177 3906
3178 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3179} 3908}
3180 3909
3181void noinline 3910noinline
3911void
3182ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3183{ 3913{
3184 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3185 return; 3915 return;
3186 3916
3187 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
3200 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3201 3931
3202 /*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));*/
3203} 3933}
3204 3934
3205void noinline 3935noinline
3936void
3206ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3207{ 3938{
3208 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3209 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3210 return; 3941 return;
3211 3942
… …
3230 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3231 3962
3232 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3233} 3964}
3234 3965
3235void noinline 3966noinline
3967void
3236ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3237{ 3969{
3238 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
3239 3973
3240 if (ev_is_active (w)) 3974 if (ev_is_active (w))
3241 { 3975 {
3242 if (w->repeat) 3976 if (w->repeat)
3243 { 3977 {
… …
3256 3990
3257 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3258} 3992}
3259 3993
3260ev_tstamp 3994ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3262{ 3996{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3264} 3998}
3265 3999
3266#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3267void noinline 4001noinline
4002void
3268ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3269{ 4004{
3270 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3271 return; 4006 return;
3272 4007
3273 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
… …
3292 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3293 4028
3294 /*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));*/
3295} 4030}
3296 4031
3297void noinline 4032noinline
4033void
3298ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3299{ 4035{
3300 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3301 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3302 return; 4038 return;
3303 4039
… …
3320 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3321 4057
3322 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3323} 4059}
3324 4060
3325void noinline 4061noinline
4062void
3326ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3327{ 4064{
3328 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3329 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3330 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
3331} 4068}
… …
3335# define SA_RESTART 0 4072# define SA_RESTART 0
3336#endif 4073#endif
3337 4074
3338#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3339 4076
3340void noinline 4077noinline
4078void
3341ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3342{ 4080{
3343 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3344 return; 4082 return;
3345 4083
3346 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));
… …
3348#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
3349 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",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3351 4089
3352 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
3353#endif 4092#endif
3354 4093
3355 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3356 4095
3357#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
3416 } 4155 }
3417 4156
3418 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3419} 4158}
3420 4159
3421void noinline 4160noinline
4161void
3422ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3423{ 4163{
3424 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3426 return; 4166 return;
3427 4167
… …
3458#endif 4198#endif
3459 4199
3460#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
3461 4201
3462void 4202void
3463ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_THROW
3464{ 4204{
3465#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
3466 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));
3467#endif 4207#endif
3468 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
… …
3475 4215
3476 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3477} 4217}
3478 4218
3479void 4219void
3480ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_THROW
3481{ 4221{
3482 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3484 return; 4224 return;
3485 4225
… …
3502 4242
3503#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3504#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3505#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3506 4246
3507static 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);
3508 4248
3509#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3510 4250
3511/* 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 */
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3513 4253
3514static void noinline 4254noinline
4255static void
3515infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3516{ 4257{
3517 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);
3518 4262
3519 if (w->wd >= 0) 4263 if (w->wd >= 0)
3520 { 4264 {
3521 struct statfs sfs; 4265 struct statfs sfs;
3522 4266
… …
3526 4270
3527 if (!fs_2625) 4271 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
3531 || 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 */
3532 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
3535 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else 4287 else
3538 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 */
3539 } 4289 }
… …
3574 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3575 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
3576 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3577} 4327}
3578 4328
3579static void noinline 4329noinline
4330static void
3580infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
3581{ 4332{
3582 int slot; 4333 int slot;
3583 int wd = w->wd; 4334 int wd = w->wd;
3584 4335
… …
3591 4342
3592 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3593 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3594} 4345}
3595 4346
3596static void noinline 4347noinline
4348static void
3597infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3598{ 4350{
3599 if (slot < 0) 4351 if (slot < 0)
3600 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3601 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3637 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3638 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3639 } 4391 }
3640} 4392}
3641 4393
3642inline_size void ecb_cold 4394inline_size ecb_cold
4395void
3643ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3644{ 4397{
3645 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3646 * 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
3647 */ 4400 */
… …
3652} 4405}
3653 4406
3654inline_size int 4407inline_size int
3655infy_newfd (void) 4408infy_newfd (void)
3656{ 4409{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0) 4412 if (fd >= 0)
3660 return fd; 4413 return fd;
3661#endif 4414#endif
3662 return inotify_init (); 4415 return inotify_init ();
… …
3737#else 4490#else
3738# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3739#endif 4492#endif
3740 4493
3741void 4494void
3742ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3743{ 4496{
3744 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3745 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3746 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3747 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3748} 4501}
3749 4502
3750static void noinline 4503noinline
4504static void
3751stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3752{ 4506{
3753 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3754 4508
3755 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3786 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3787 } 4541 }
3788} 4542}
3789 4543
3790void 4544void
3791ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3792{ 4546{
3793 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3794 return; 4548 return;
3795 4549
3796 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3817 4571
3818 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3819} 4573}
3820 4574
3821void 4575void
3822ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3823{ 4577{
3824 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3826 return; 4580 return;
3827 4581
… …
3843} 4597}
3844#endif 4598#endif
3845 4599
3846#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3847void 4601void
3848ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3849{ 4603{
3850 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3851 return; 4605 return;
3852 4606
3853 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3866 4620
3867 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3868} 4622}
3869 4623
3870void 4624void
3871ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3872{ 4626{
3873 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3874 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3875 return; 4629 return;
3876 4630
… …
3890} 4644}
3891#endif 4645#endif
3892 4646
3893#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
3894void 4648void
3895ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3896{ 4650{
3897 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3898 return; 4652 return;
3899 4653
3900 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3905 4659
3906 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3907} 4661}
3908 4662
3909void 4663void
3910ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3911{ 4665{
3912 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3913 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3914 return; 4668 return;
3915 4669
… …
3928} 4682}
3929#endif 4683#endif
3930 4684
3931#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
3932void 4686void
3933ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_THROW
3934{ 4688{
3935 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3936 return; 4690 return;
3937 4691
3938 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3943 4697
3944 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3945} 4699}
3946 4700
3947void 4701void
3948ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_THROW
3949{ 4703{
3950 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3952 return; 4706 return;
3953 4707
… …
3965 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3966} 4720}
3967#endif 4721#endif
3968 4722
3969#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3970void noinline 4724noinline
4725void
3971ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3972{ 4727{
3973 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
3974} 4729}
3975 4730
3976static void 4731static void
… …
4024 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
4025} 4780}
4026#endif 4781#endif
4027 4782
4028void 4783void
4029ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4030{ 4785{
4031 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
4032 return; 4787 return;
4033 4788
4034 { 4789 {
… …
4055 4810
4056 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
4057} 4812}
4058 4813
4059void 4814void
4060ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4061{ 4816{
4062 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
4063 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
4064 return; 4819 return;
4065 4820
… …
4075} 4830}
4076#endif 4831#endif
4077 4832
4078#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
4079void 4834void
4080ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4081{ 4836{
4082 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4083 return; 4838 return;
4084 4839
4085 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
4090 4845
4091 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
4092} 4847}
4093 4848
4094void 4849void
4095ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4096{ 4851{
4097 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
4098 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
4099 return; 4854 return;
4100 4855
… …
4113} 4868}
4114#endif 4869#endif
4115 4870
4116#if EV_CLEANUP_ENABLE 4871#if EV_CLEANUP_ENABLE
4117void 4872void
4118ev_cleanup_start (EV_P_ ev_cleanup *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4119{ 4874{
4120 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
4121 return; 4876 return;
4122 4877
4123 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
… …
4130 ev_unref (EV_A); 4885 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4132} 4887}
4133 4888
4134void 4889void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w) 4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4136{ 4891{
4137 clear_pending (EV_A_ (W)w); 4892 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w))) 4893 if (expect_false (!ev_is_active (w)))
4139 return; 4894 return;
4140 4895
… …
4154} 4909}
4155#endif 4910#endif
4156 4911
4157#if EV_ASYNC_ENABLE 4912#if EV_ASYNC_ENABLE
4158void 4913void
4159ev_async_start (EV_P_ ev_async *w) 4914ev_async_start (EV_P_ ev_async *w) EV_THROW
4160{ 4915{
4161 if (expect_false (ev_is_active (w))) 4916 if (expect_false (ev_is_active (w)))
4162 return; 4917 return;
4163 4918
4164 w->sent = 0; 4919 w->sent = 0;
… …
4173 4928
4174 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4175} 4930}
4176 4931
4177void 4932void
4178ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_THROW
4179{ 4934{
4180 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
4182 return; 4937 return;
4183 4938
… …
4194 4949
4195 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
4196} 4951}
4197 4952
4198void 4953void
4199ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_THROW
4200{ 4955{
4201 w->sent = 1; 4956 w->sent = 1;
4202 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
4203} 4958}
4204#endif 4959#endif
… …
4241 4996
4242 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));
4243} 4998}
4244 4999
4245void 5000void
4246ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4247{ 5002{
4248 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));
4249 5004
4250 if (expect_false (!once)) 5005 if (expect_false (!once))
4251 { 5006 {
… …
4272} 5027}
4273 5028
4274/*****************************************************************************/ 5029/*****************************************************************************/
4275 5030
4276#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4277void ecb_cold 5032ecb_cold
5033void
4278ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4279{ 5035{
4280 int i, j; 5036 int i, j;
4281 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4282 5038
4283 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
4389 5145
4390#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
4391 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
4392#endif 5148#endif
4393 5149
4394EV_CPP(})
4395

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines