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Comparing libev/ev.c (file contents):
Revision 1.392 by root, Thu Aug 4 14:37:49 2011 UTC vs.
Revision 1.492 by root, Sat Jun 22 16:25:53 2019 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) 2007-2019 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
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
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 */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# 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 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
302#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 340# else
306# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
347 382
348#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 385#endif
351 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
403#if EV_USE_LINUXAIO
404# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
405#endif
406
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 407/* 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. */ 408/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 409#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 410# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 411# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 412# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 413# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 414# define EV_USE_MONOTONIC 1
360# else 415# else
… …
363# endif 418# endif
364#endif 419#endif
365 420
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 421/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 422
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 423#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 424# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 425# define EV_USE_MONOTONIC 0
377#endif 426#endif
378 427
… …
386# define EV_USE_INOTIFY 0 435# define EV_USE_INOTIFY 0
387#endif 436#endif
388 437
389#if !EV_USE_NANOSLEEP 438#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 439/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 440# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 441# include <sys/select.h>
442# endif
443#endif
444
445#if EV_USE_LINUXAIO
446# include <sys/syscall.h>
447# if !SYS_io_getevents
448# undef EV_USE_LINUXAIO
449# define EV_USE_LINUXAIO 0
393# endif 450# endif
394#endif 451#endif
395 452
396#if EV_USE_INOTIFY 453#if EV_USE_INOTIFY
397# include <sys/statfs.h> 454# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 456/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 457# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 458# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 459# define EV_USE_INOTIFY 0
403# endif 460# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 461#endif
409 462
410#if EV_USE_EVENTFD 463#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 464/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 465# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 522/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 523/* ECB.H BEGIN */
471/* 524/*
472 * libecb - http://software.schmorp.de/pkg/libecb 525 * libecb - http://software.schmorp.de/pkg/libecb
473 * 526 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 527 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 528 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 529 * All rights reserved.
477 * 530 *
478 * Redistribution and use in source and binary forms, with or without modifica- 531 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 532 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 546 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 547 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 548 * 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 549 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 550 * OF THE POSSIBILITY OF SUCH DAMAGE.
551 *
552 * Alternatively, the contents of this file may be used under the terms of
553 * the GNU General Public License ("GPL") version 2 or any later version,
554 * in which case the provisions of the GPL are applicable instead of
555 * the above. If you wish to allow the use of your version of this file
556 * only under the terms of the GPL and not to allow others to use your
557 * version of this file under the BSD license, indicate your decision
558 * by deleting the provisions above and replace them with the notice
559 * and other provisions required by the GPL. If you do not delete the
560 * provisions above, a recipient may use your version of this file under
561 * either the BSD or the GPL.
498 */ 562 */
499 563
500#ifndef ECB_H 564#ifndef ECB_H
501#define ECB_H 565#define ECB_H
566
567/* 16 bits major, 16 bits minor */
568#define ECB_VERSION 0x00010005
502 569
503#ifdef _WIN32 570#ifdef _WIN32
504 typedef signed char int8_t; 571 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 572 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 573 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 579 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 580 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 581 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 582 typedef unsigned __int64 uint64_t;
516 #endif 583 #endif
584 #ifdef _WIN64
585 #define ECB_PTRSIZE 8
586 typedef uint64_t uintptr_t;
587 typedef int64_t intptr_t;
588 #else
589 #define ECB_PTRSIZE 4
590 typedef uint32_t uintptr_t;
591 typedef int32_t intptr_t;
592 #endif
517#else 593#else
518 #include <inttypes.h> 594 #include <inttypes.h>
595 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
596 #define ECB_PTRSIZE 8
597 #else
598 #define ECB_PTRSIZE 4
599 #endif
600#endif
601
602#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
603#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
604
605/* work around x32 idiocy by defining proper macros */
606#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
607 #if _ILP32
608 #define ECB_AMD64_X32 1
609 #else
610 #define ECB_AMD64 1
611 #endif
519#endif 612#endif
520 613
521/* many compilers define _GNUC_ to some versions but then only implement 614/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 615 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 616 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 617 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 618 * 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. 619 * an issue with that they should have done it right in the first place.
527 */ 620 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 621#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 622 #define ECB_GCC_VERSION(major,minor) 0
531 #else 623#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 624 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 625#endif
626
627#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
628
629#if __clang__ && defined __has_builtin
630 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
631#else
632 #define ECB_CLANG_BUILTIN(x) 0
633#endif
634
635#if __clang__ && defined __has_extension
636 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
637#else
638 #define ECB_CLANG_EXTENSION(x) 0
639#endif
640
641#define ECB_CPP (__cplusplus+0)
642#define ECB_CPP11 (__cplusplus >= 201103L)
643#define ECB_CPP14 (__cplusplus >= 201402L)
644#define ECB_CPP17 (__cplusplus >= 201703L)
645
646#if ECB_CPP
647 #define ECB_C 0
648 #define ECB_STDC_VERSION 0
649#else
650 #define ECB_C 1
651 #define ECB_STDC_VERSION __STDC_VERSION__
652#endif
653
654#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
655#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
656#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
657
658#if ECB_CPP
659 #define ECB_EXTERN_C extern "C"
660 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
661 #define ECB_EXTERN_C_END }
662#else
663 #define ECB_EXTERN_C extern
664 #define ECB_EXTERN_C_BEG
665 #define ECB_EXTERN_C_END
534#endif 666#endif
535 667
536/*****************************************************************************/ 668/*****************************************************************************/
537 669
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 670/* 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 */ 671/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 672
541#if ECB_NO_THREADS || ECB_NO_SMP 673#if ECB_NO_THREADS
674 #define ECB_NO_SMP 1
675#endif
676
677#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 678 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 679#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 680
681/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
682#if __xlC__ && ECB_CPP
683 #include <builtins.h>
684#endif
685
686#if 1400 <= _MSC_VER
687 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
545#endif 688#endif
546 689
547#ifndef ECB_MEMORY_FENCE 690#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 691 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 692 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 696 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 698 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 699 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 700 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 701 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
702 #elif defined __ARM_ARCH_2__ \
703 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
704 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
705 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
706 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
707 || defined __ARM_ARCH_5TEJ__
708 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 709 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ 710 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
711 || defined __ARM_ARCH_6T2__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
713 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 714 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #define ECB_MEMORY_FENCE \ 716 #elif __aarch64__
564 do { \ 717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
565 int null = 0; \ 718 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ 719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
567 while (0) 720 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
721 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
722 #elif defined __s390__ || defined __s390x__
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
724 #elif defined __mips__
725 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
726 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
728 #elif defined __alpha__
729 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
730 #elif defined __hppa__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
733 #elif defined __ia64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
735 #elif defined __m68k__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #elif defined __m88k__
738 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
739 #elif defined __sh__
740 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
568 #endif 741 #endif
569 #endif 742 #endif
570#endif 743#endif
571 744
572#ifndef ECB_MEMORY_FENCE 745#ifndef ECB_MEMORY_FENCE
746 #if ECB_GCC_VERSION(4,7)
747 /* see comment below (stdatomic.h) about the C11 memory model. */
748 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
749 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
750 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
751
752 #elif ECB_CLANG_EXTENSION(c_atomic)
753 /* see comment below (stdatomic.h) about the C11 memory model. */
754 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
755 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
756 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
757
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 758 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
574 #define ECB_MEMORY_FENCE __sync_synchronize () 759 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 760 #elif _MSC_VER >= 1500 /* VC++ 2008 */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 761 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
762 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
763 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
764 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
765 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 766 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 767 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 768 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 769 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 770 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32) 771 #elif defined _WIN32
583 #include <WinNT.h> 772 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 773 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
774 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
775 #include <mbarrier.h>
776 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
777 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
778 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
790 /* any fence other than seq_cst, which isn't very efficient for us. */
791 /* Why that is, we don't know - either the C11 memory model is quite useless */
792 /* for most usages, or gcc and clang have a bug */
793 /* I *currently* lean towards the latter, and inefficiently implement */
794 /* all three of ecb's fences as a seq_cst fence */
795 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
796 /* for all __atomic_thread_fence's except seq_cst */
797 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
585 #endif 798 #endif
586#endif 799#endif
587 800
588#ifndef ECB_MEMORY_FENCE 801#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS 802 #if !ECB_AVOID_PTHREADS
… …
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 814 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 815 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif 816 #endif
604#endif 817#endif
605 818
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 819#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif 821#endif
609 822
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 823#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 824 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif 825#endif
613 826
614/*****************************************************************************/ 827/*****************************************************************************/
615 828
616#define ECB_C99 (__STDC_VERSION__ >= 199901L) 829#if ECB_CPP
617
618#if __cplusplus
619 #define ecb_inline static inline 830 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5) 831#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__ 832 #define ecb_inline static __inline__
622#elif ECB_C99 833#elif ECB_C99
623 #define ecb_inline static inline 834 #define ecb_inline static inline
… …
637 848
638#define ECB_CONCAT_(a, b) a ## b 849#define ECB_CONCAT_(a, b) a ## b
639#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 850#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
640#define ECB_STRINGIFY_(a) # a 851#define ECB_STRINGIFY_(a) # a
641#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 852#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
853#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
642 854
643#define ecb_function_ ecb_inline 855#define ecb_function_ ecb_inline
644 856
645#if ECB_GCC_VERSION(3,1) 857#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
646 #define ecb_attribute(attrlist) __attribute__(attrlist) 858 #define ecb_attribute(attrlist) __attribute__ (attrlist)
859#else
860 #define ecb_attribute(attrlist)
861#endif
862
863#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
647 #define ecb_is_constant(expr) __builtin_constant_p (expr) 864 #define ecb_is_constant(expr) __builtin_constant_p (expr)
865#else
866 /* possible C11 impl for integral types
867 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
868 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
869
870 #define ecb_is_constant(expr) 0
871#endif
872
873#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 874 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
875#else
876 #define ecb_expect(expr,value) (expr)
877#endif
878
879#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 880 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else 881#else
651 #define ecb_attribute(attrlist)
652 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality) 882 #define ecb_prefetch(addr,rw,locality)
655#endif 883#endif
656 884
657/* no emulation for ecb_decltype */ 885/* no emulation for ecb_decltype */
658#if ECB_GCC_VERSION(4,5) 886#if ECB_CPP11
887 // older implementations might have problems with decltype(x)::type, work around it
888 template<class T> struct ecb_decltype_t { typedef T type; };
659 #define ecb_decltype(x) __decltype(x) 889 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
660#elif ECB_GCC_VERSION(3,0) 890#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
661 #define ecb_decltype(x) __typeof(x) 891 #define ecb_decltype(x) __typeof__ (x)
662#endif 892#endif
663 893
894#if _MSC_VER >= 1300
895 #define ecb_deprecated __declspec (deprecated)
896#else
897 #define ecb_deprecated ecb_attribute ((__deprecated__))
898#endif
899
900#if _MSC_VER >= 1500
901 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
902#elif ECB_GCC_VERSION(4,5)
903 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
904#else
905 #define ecb_deprecated_message(msg) ecb_deprecated
906#endif
907
908#if _MSC_VER >= 1400
909 #define ecb_noinline __declspec (noinline)
910#else
664#define ecb_noinline ecb_attribute ((__noinline__)) 911 #define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__)) 912#endif
913
666#define ecb_unused ecb_attribute ((__unused__)) 914#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__)) 915#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__)) 916#define ecb_pure ecb_attribute ((__pure__))
917
918#if ECB_C11 || __IBMC_NORETURN
919 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
920 #define ecb_noreturn _Noreturn
921#elif ECB_CPP11
922 #define ecb_noreturn [[noreturn]]
923#elif _MSC_VER >= 1200
924 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
925 #define ecb_noreturn __declspec (noreturn)
926#else
927 #define ecb_noreturn ecb_attribute ((__noreturn__))
928#endif
669 929
670#if ECB_GCC_VERSION(4,3) 930#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__)) 931 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__)) 932 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__)) 933 #define ecb_cold ecb_attribute ((__cold__))
… …
685/* for compatibility to the rest of the world */ 945/* for compatibility to the rest of the world */
686#define ecb_likely(expr) ecb_expect_true (expr) 946#define ecb_likely(expr) ecb_expect_true (expr)
687#define ecb_unlikely(expr) ecb_expect_false (expr) 947#define ecb_unlikely(expr) ecb_expect_false (expr)
688 948
689/* count trailing zero bits and count # of one bits */ 949/* count trailing zero bits and count # of one bits */
690#if ECB_GCC_VERSION(3,4) 950#if ECB_GCC_VERSION(3,4) \
951 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
952 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
953 && ECB_CLANG_BUILTIN(__builtin_popcount))
691 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 954 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
692 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 955 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
693 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 956 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
694 #define ecb_ctz32(x) __builtin_ctz (x) 957 #define ecb_ctz32(x) __builtin_ctz (x)
695 #define ecb_ctz64(x) __builtin_ctzll (x) 958 #define ecb_ctz64(x) __builtin_ctzll (x)
696 #define ecb_popcount32(x) __builtin_popcount (x) 959 #define ecb_popcount32(x) __builtin_popcount (x)
697 /* no popcountll */ 960 /* no popcountll */
698#else 961#else
699 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 962 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
700 ecb_function_ int 963 ecb_function_ ecb_const int
701 ecb_ctz32 (uint32_t x) 964 ecb_ctz32 (uint32_t x)
702 { 965 {
966#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
967 unsigned long r;
968 _BitScanForward (&r, x);
969 return (int)r;
970#else
703 int r = 0; 971 int r = 0;
704 972
705 x &= ~x + 1; /* this isolates the lowest bit */ 973 x &= ~x + 1; /* this isolates the lowest bit */
706 974
707#if ECB_branchless_on_i386 975#if ECB_branchless_on_i386
… …
717 if (x & 0xff00ff00) r += 8; 985 if (x & 0xff00ff00) r += 8;
718 if (x & 0xffff0000) r += 16; 986 if (x & 0xffff0000) r += 16;
719#endif 987#endif
720 988
721 return r; 989 return r;
990#endif
722 } 991 }
723 992
724 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 993 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
725 ecb_function_ int 994 ecb_function_ ecb_const int
726 ecb_ctz64 (uint64_t x) 995 ecb_ctz64 (uint64_t x)
727 { 996 {
997#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
998 unsigned long r;
999 _BitScanForward64 (&r, x);
1000 return (int)r;
1001#else
728 int shift = x & 0xffffffffU ? 0 : 32; 1002 int shift = x & 0xffffffff ? 0 : 32;
729 return ecb_ctz32 (x >> shift) + shift; 1003 return ecb_ctz32 (x >> shift) + shift;
1004#endif
730 } 1005 }
731 1006
732 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
733 ecb_function_ int 1008 ecb_function_ ecb_const int
734 ecb_popcount32 (uint32_t x) 1009 ecb_popcount32 (uint32_t x)
735 { 1010 {
736 x -= (x >> 1) & 0x55555555; 1011 x -= (x >> 1) & 0x55555555;
737 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1012 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
738 x = ((x >> 4) + x) & 0x0f0f0f0f; 1013 x = ((x >> 4) + x) & 0x0f0f0f0f;
739 x *= 0x01010101; 1014 x *= 0x01010101;
740 1015
741 return x >> 24; 1016 return x >> 24;
742 } 1017 }
743 1018
744 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1019 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
745 ecb_function_ int ecb_ld32 (uint32_t x) 1020 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
746 { 1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanReverse (&r, x);
1025 return (int)r;
1026#else
747 int r = 0; 1027 int r = 0;
748 1028
749 if (x >> 16) { x >>= 16; r += 16; } 1029 if (x >> 16) { x >>= 16; r += 16; }
750 if (x >> 8) { x >>= 8; r += 8; } 1030 if (x >> 8) { x >>= 8; r += 8; }
751 if (x >> 4) { x >>= 4; r += 4; } 1031 if (x >> 4) { x >>= 4; r += 4; }
752 if (x >> 2) { x >>= 2; r += 2; } 1032 if (x >> 2) { x >>= 2; r += 2; }
753 if (x >> 1) { r += 1; } 1033 if (x >> 1) { r += 1; }
754 1034
755 return r; 1035 return r;
1036#endif
756 } 1037 }
757 1038
758 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1039 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
759 ecb_function_ int ecb_ld64 (uint64_t x) 1040 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
760 { 1041 {
1042#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1043 unsigned long r;
1044 _BitScanReverse64 (&r, x);
1045 return (int)r;
1046#else
761 int r = 0; 1047 int r = 0;
762 1048
763 if (x >> 32) { x >>= 32; r += 32; } 1049 if (x >> 32) { x >>= 32; r += 32; }
764 1050
765 return r + ecb_ld32 (x); 1051 return r + ecb_ld32 (x);
1052#endif
766 } 1053 }
767#endif 1054#endif
1055
1056ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1058ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1059ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1060
1061ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1062ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1063{
1064 return ( (x * 0x0802U & 0x22110U)
1065 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1066}
1067
1068ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1069ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1070{
1071 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1072 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1073 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1074 x = ( x >> 8 ) | ( x << 8);
1075
1076 return x;
1077}
1078
1079ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1080ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1081{
1082 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1083 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1084 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1085 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1086 x = ( x >> 16 ) | ( x << 16);
1087
1088 return x;
1089}
768 1090
769/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1091/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */ 1092/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1093ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
772ecb_function_ int 1094ecb_function_ ecb_const int
773ecb_popcount64 (uint64_t x) 1095ecb_popcount64 (uint64_t x)
774{ 1096{
775 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1097 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
776} 1098}
777 1099
778ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
779ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
780ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
781ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
782ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
783ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
784ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1106ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
785ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1107ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
786 1108
787ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1109ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
788ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1110ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
789ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1111ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
790ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1112ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
791ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1113ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
792ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1114ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
793ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1115ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
794ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1116ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
795 1117
796#if ECB_GCC_VERSION(4,3) 1118#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1119 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1120 #define ecb_bswap16(x) __builtin_bswap16 (x)
1121 #else
797 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1122 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1123 #endif
798 #define ecb_bswap32(x) __builtin_bswap32 (x) 1124 #define ecb_bswap32(x) __builtin_bswap32 (x)
799 #define ecb_bswap64(x) __builtin_bswap64 (x) 1125 #define ecb_bswap64(x) __builtin_bswap64 (x)
1126#elif _MSC_VER
1127 #include <stdlib.h>
1128 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1129 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1130 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
800#else 1131#else
801 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1132 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
802 ecb_function_ uint16_t 1133 ecb_function_ ecb_const uint16_t
803 ecb_bswap16 (uint16_t x) 1134 ecb_bswap16 (uint16_t x)
804 { 1135 {
805 return ecb_rotl16 (x, 8); 1136 return ecb_rotl16 (x, 8);
806 } 1137 }
807 1138
808 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1139 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
809 ecb_function_ uint32_t 1140 ecb_function_ ecb_const uint32_t
810 ecb_bswap32 (uint32_t x) 1141 ecb_bswap32 (uint32_t x)
811 { 1142 {
812 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1143 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
813 } 1144 }
814 1145
815 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1146 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
816 ecb_function_ uint64_t 1147 ecb_function_ ecb_const uint64_t
817 ecb_bswap64 (uint64_t x) 1148 ecb_bswap64 (uint64_t x)
818 { 1149 {
819 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1150 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
820 } 1151 }
821#endif 1152#endif
822 1153
823#if ECB_GCC_VERSION(4,5) 1154#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
824 #define ecb_unreachable() __builtin_unreachable () 1155 #define ecb_unreachable() __builtin_unreachable ()
825#else 1156#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1157 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1158 ecb_inline ecb_noreturn void ecb_unreachable (void);
828 ecb_function_ void ecb_unreachable (void) { } 1159 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
829#endif 1160#endif
830 1161
831/* try to tell the compiler that some condition is definitely true */ 1162/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1163#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
833 1164
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1165ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
835ecb_function_ unsigned char 1166ecb_inline ecb_const uint32_t
836ecb_byteorder_helper (void) 1167ecb_byteorder_helper (void)
837{ 1168{
838 const uint32_t u = 0x11223344; 1169 /* the union code still generates code under pressure in gcc, */
839 return *(unsigned char *)&u; 1170 /* but less than using pointers, and always seems to */
1171 /* successfully return a constant. */
1172 /* the reason why we have this horrible preprocessor mess */
1173 /* is to avoid it in all cases, at least on common architectures */
1174 /* or when using a recent enough gcc version (>= 4.6) */
1175#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1176 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1177 #define ECB_LITTLE_ENDIAN 1
1178 return 0x44332211;
1179#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1180 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1181 #define ECB_BIG_ENDIAN 1
1182 return 0x11223344;
1183#else
1184 union
1185 {
1186 uint8_t c[4];
1187 uint32_t u;
1188 } u = { 0x11, 0x22, 0x33, 0x44 };
1189 return u.u;
1190#endif
840} 1191}
841 1192
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_big_endian (void);
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1194ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1195ecb_inline ecb_const ecb_bool ecb_little_endian (void);
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1196ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
846 1197
847#if ECB_GCC_VERSION(3,0) || ECB_C99 1198#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1199 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else 1200#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1201 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1202#endif
1203
1204#if ECB_CPP
1205 template<typename T>
1206 static inline T ecb_div_rd (T val, T div)
1207 {
1208 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1209 }
1210 template<typename T>
1211 static inline T ecb_div_ru (T val, T div)
1212 {
1213 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1214 }
1215#else
1216 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1217 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
851#endif 1218#endif
852 1219
853#if ecb_cplusplus_does_not_suck 1220#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1221 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N> 1222 template<typename T, int N>
… …
859 } 1226 }
860#else 1227#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1228 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif 1229#endif
863 1230
1231ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1232ecb_function_ ecb_const uint32_t
1233ecb_binary16_to_binary32 (uint32_t x)
1234{
1235 unsigned int s = (x & 0x8000) << (31 - 15);
1236 int e = (x >> 10) & 0x001f;
1237 unsigned int m = x & 0x03ff;
1238
1239 if (ecb_expect_false (e == 31))
1240 /* infinity or NaN */
1241 e = 255 - (127 - 15);
1242 else if (ecb_expect_false (!e))
1243 {
1244 if (ecb_expect_true (!m))
1245 /* zero, handled by code below by forcing e to 0 */
1246 e = 0 - (127 - 15);
1247 else
1248 {
1249 /* subnormal, renormalise */
1250 unsigned int s = 10 - ecb_ld32 (m);
1251
1252 m = (m << s) & 0x3ff; /* mask implicit bit */
1253 e -= s - 1;
1254 }
1255 }
1256
1257 /* e and m now are normalised, or zero, (or inf or nan) */
1258 e += 127 - 15;
1259
1260 return s | (e << 23) | (m << (23 - 10));
1261}
1262
1263ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1264ecb_function_ ecb_const uint16_t
1265ecb_binary32_to_binary16 (uint32_t x)
1266{
1267 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1268 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1269 unsigned int m = x & 0x007fffff;
1270
1271 x &= 0x7fffffff;
1272
1273 /* if it's within range of binary16 normals, use fast path */
1274 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1275 {
1276 /* mantissa round-to-even */
1277 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1278
1279 /* handle overflow */
1280 if (ecb_expect_false (m >= 0x00800000))
1281 {
1282 m >>= 1;
1283 e += 1;
1284 }
1285
1286 return s | (e << 10) | (m >> (23 - 10));
1287 }
1288
1289 /* handle large numbers and infinity */
1290 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1291 return s | 0x7c00;
1292
1293 /* handle zero, subnormals and small numbers */
1294 if (ecb_expect_true (x < 0x38800000))
1295 {
1296 /* zero */
1297 if (ecb_expect_true (!x))
1298 return s;
1299
1300 /* handle subnormals */
1301
1302 /* too small, will be zero */
1303 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1304 return s;
1305
1306 m |= 0x00800000; /* make implicit bit explicit */
1307
1308 /* very tricky - we need to round to the nearest e (+10) bit value */
1309 {
1310 unsigned int bits = 14 - e;
1311 unsigned int half = (1 << (bits - 1)) - 1;
1312 unsigned int even = (m >> bits) & 1;
1313
1314 /* if this overflows, we will end up with a normalised number */
1315 m = (m + half + even) >> bits;
1316 }
1317
1318 return s | m;
1319 }
1320
1321 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1322 m >>= 13;
1323
1324 return s | 0x7c00 | m | !m;
1325}
1326
1327/*******************************************************************************/
1328/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1329
1330/* basically, everything uses "ieee pure-endian" floating point numbers */
1331/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1332#if 0 \
1333 || __i386 || __i386__ \
1334 || ECB_GCC_AMD64 \
1335 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1336 || defined __s390__ || defined __s390x__ \
1337 || defined __mips__ \
1338 || defined __alpha__ \
1339 || defined __hppa__ \
1340 || defined __ia64__ \
1341 || defined __m68k__ \
1342 || defined __m88k__ \
1343 || defined __sh__ \
1344 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1345 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1346 || defined __aarch64__
1347 #define ECB_STDFP 1
1348 #include <string.h> /* for memcpy */
1349#else
1350 #define ECB_STDFP 0
1351#endif
1352
1353#ifndef ECB_NO_LIBM
1354
1355 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1356
1357 /* only the oldest of old doesn't have this one. solaris. */
1358 #ifdef INFINITY
1359 #define ECB_INFINITY INFINITY
1360 #else
1361 #define ECB_INFINITY HUGE_VAL
1362 #endif
1363
1364 #ifdef NAN
1365 #define ECB_NAN NAN
1366 #else
1367 #define ECB_NAN ECB_INFINITY
1368 #endif
1369
1370 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1371 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1372 #define ecb_frexpf(x,e) frexpf ((x), (e))
1373 #else
1374 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1375 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1376 #endif
1377
1378 /* convert a float to ieee single/binary32 */
1379 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1380 ecb_function_ ecb_const uint32_t
1381 ecb_float_to_binary32 (float x)
1382 {
1383 uint32_t r;
1384
1385 #if ECB_STDFP
1386 memcpy (&r, &x, 4);
1387 #else
1388 /* slow emulation, works for anything but -0 */
1389 uint32_t m;
1390 int e;
1391
1392 if (x == 0e0f ) return 0x00000000U;
1393 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1394 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1395 if (x != x ) return 0x7fbfffffU;
1396
1397 m = ecb_frexpf (x, &e) * 0x1000000U;
1398
1399 r = m & 0x80000000U;
1400
1401 if (r)
1402 m = -m;
1403
1404 if (e <= -126)
1405 {
1406 m &= 0xffffffU;
1407 m >>= (-125 - e);
1408 e = -126;
1409 }
1410
1411 r |= (e + 126) << 23;
1412 r |= m & 0x7fffffU;
1413 #endif
1414
1415 return r;
1416 }
1417
1418 /* converts an ieee single/binary32 to a float */
1419 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1420 ecb_function_ ecb_const float
1421 ecb_binary32_to_float (uint32_t x)
1422 {
1423 float r;
1424
1425 #if ECB_STDFP
1426 memcpy (&r, &x, 4);
1427 #else
1428 /* emulation, only works for normals and subnormals and +0 */
1429 int neg = x >> 31;
1430 int e = (x >> 23) & 0xffU;
1431
1432 x &= 0x7fffffU;
1433
1434 if (e)
1435 x |= 0x800000U;
1436 else
1437 e = 1;
1438
1439 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1440 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1441
1442 r = neg ? -r : r;
1443 #endif
1444
1445 return r;
1446 }
1447
1448 /* convert a double to ieee double/binary64 */
1449 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1450 ecb_function_ ecb_const uint64_t
1451 ecb_double_to_binary64 (double x)
1452 {
1453 uint64_t r;
1454
1455 #if ECB_STDFP
1456 memcpy (&r, &x, 8);
1457 #else
1458 /* slow emulation, works for anything but -0 */
1459 uint64_t m;
1460 int e;
1461
1462 if (x == 0e0 ) return 0x0000000000000000U;
1463 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1464 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1465 if (x != x ) return 0X7ff7ffffffffffffU;
1466
1467 m = frexp (x, &e) * 0x20000000000000U;
1468
1469 r = m & 0x8000000000000000;;
1470
1471 if (r)
1472 m = -m;
1473
1474 if (e <= -1022)
1475 {
1476 m &= 0x1fffffffffffffU;
1477 m >>= (-1021 - e);
1478 e = -1022;
1479 }
1480
1481 r |= ((uint64_t)(e + 1022)) << 52;
1482 r |= m & 0xfffffffffffffU;
1483 #endif
1484
1485 return r;
1486 }
1487
1488 /* converts an ieee double/binary64 to a double */
1489 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1490 ecb_function_ ecb_const double
1491 ecb_binary64_to_double (uint64_t x)
1492 {
1493 double r;
1494
1495 #if ECB_STDFP
1496 memcpy (&r, &x, 8);
1497 #else
1498 /* emulation, only works for normals and subnormals and +0 */
1499 int neg = x >> 63;
1500 int e = (x >> 52) & 0x7ffU;
1501
1502 x &= 0xfffffffffffffU;
1503
1504 if (e)
1505 x |= 0x10000000000000U;
1506 else
1507 e = 1;
1508
1509 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1510 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1511
1512 r = neg ? -r : r;
1513 #endif
1514
1515 return r;
1516 }
1517
1518 /* convert a float to ieee half/binary16 */
1519 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1520 ecb_function_ ecb_const uint16_t
1521 ecb_float_to_binary16 (float x)
1522 {
1523 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1524 }
1525
1526 /* convert an ieee half/binary16 to float */
1527 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1528 ecb_function_ ecb_const float
1529 ecb_binary16_to_float (uint16_t x)
1530 {
1531 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1532 }
1533
1534#endif
1535
864#endif 1536#endif
865 1537
866/* ECB.H END */ 1538/* ECB.H END */
867 1539
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1540#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1541/* if your architecture doesn't need memory fences, e.g. because it is
1542 * single-cpu/core, or if you use libev in a project that doesn't use libev
1543 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1544 * libev, in which cases the memory fences become nops.
1545 * alternatively, you can remove this #error and link against libpthread,
1546 * which will then provide the memory fences.
1547 */
1548# error "memory fences not defined for your architecture, please report"
1549#endif
1550
869# undef ECB_MEMORY_FENCE 1551#ifndef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE 1552# define ECB_MEMORY_FENCE do { } while (0)
871# undef ECB_MEMORY_FENCE_RELEASE 1553# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1554# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
872#endif 1555#endif
873 1556
874#define expect_false(cond) ecb_expect_false (cond) 1557#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond) 1558#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline 1559#define noinline ecb_noinline
… …
878#define inline_size ecb_inline 1561#define inline_size ecb_inline
879 1562
880#if EV_FEATURE_CODE 1563#if EV_FEATURE_CODE
881# define inline_speed ecb_inline 1564# define inline_speed ecb_inline
882#else 1565#else
883# define inline_speed static noinline 1566# define inline_speed noinline static
884#endif 1567#endif
885 1568
886#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1569#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
887 1570
888#if EV_MINPRI == EV_MAXPRI 1571#if EV_MINPRI == EV_MAXPRI
889# define ABSPRI(w) (((W)w), 0) 1572# define ABSPRI(w) (((W)w), 0)
890#else 1573#else
891# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1574# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
892#endif 1575#endif
893 1576
894#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1577#define EMPTY /* required for microsofts broken pseudo-c compiler */
895#define EMPTY2(a,b) /* used to suppress some warnings */
896 1578
897typedef ev_watcher *W; 1579typedef ev_watcher *W;
898typedef ev_watcher_list *WL; 1580typedef ev_watcher_list *WL;
899typedef ev_watcher_time *WT; 1581typedef ev_watcher_time *WT;
900 1582
… …
935#else 1617#else
936 1618
937#include <float.h> 1619#include <float.h>
938 1620
939/* a floor() replacement function, should be independent of ev_tstamp type */ 1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
940static ev_tstamp noinline 1623static ev_tstamp
941ev_floor (ev_tstamp v) 1624ev_floor (ev_tstamp v)
942{ 1625{
943 /* the choice of shift factor is not terribly important */ 1626 /* the choice of shift factor is not terribly important */
944#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
945 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
977 1660
978#ifdef __linux 1661#ifdef __linux
979# include <sys/utsname.h> 1662# include <sys/utsname.h>
980#endif 1663#endif
981 1664
982static unsigned int noinline ecb_cold 1665noinline ecb_cold
1666static unsigned int
983ev_linux_version (void) 1667ev_linux_version (void)
984{ 1668{
985#ifdef __linux 1669#ifdef __linux
986 unsigned int v = 0; 1670 unsigned int v = 0;
987 struct utsname buf; 1671 struct utsname buf;
… …
1016} 1700}
1017 1701
1018/*****************************************************************************/ 1702/*****************************************************************************/
1019 1703
1020#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
1021static void noinline ecb_cold 1705noinline ecb_cold
1706static void
1022ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
1023{ 1708{
1024 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
1025} 1710}
1026#endif 1711#endif
1027 1712
1028static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1029 1714
1030void ecb_cold 1715ecb_cold
1716void
1031ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1032{ 1718{
1033 syserr_cb = cb; 1719 syserr_cb = cb;
1034} 1720}
1035 1721
1036static void noinline ecb_cold 1722noinline ecb_cold
1723static void
1037ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
1038{ 1725{
1039 if (!msg) 1726 if (!msg)
1040 msg = "(libev) system error"; 1727 msg = "(libev) system error";
1041 1728
… …
1054 abort (); 1741 abort ();
1055 } 1742 }
1056} 1743}
1057 1744
1058static void * 1745static void *
1059ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1060{ 1747{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
1064 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
1065 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
1066 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
1067 */ 1753 */
1068 1754
1069 if (size) 1755 if (size)
1070 return realloc (ptr, size); 1756 return realloc (ptr, size);
1071 1757
1072 free (ptr); 1758 free (ptr);
1073 return 0; 1759 return 0;
1074#endif
1075} 1760}
1076 1761
1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1078 1763
1079void ecb_cold 1764ecb_cold
1765void
1080ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1081{ 1767{
1082 alloc = cb; 1768 alloc = cb;
1083} 1769}
1084 1770
1085inline_speed void * 1771inline_speed void *
… …
1112typedef struct 1798typedef struct
1113{ 1799{
1114 WL head; 1800 WL head;
1115 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
1116 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1117 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
1118 unsigned char unused; 1804 unsigned char unused;
1119#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
1120 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
1121#endif 1807#endif
1122#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1173 #undef VAR 1859 #undef VAR
1174 }; 1860 };
1175 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
1176 1862
1177 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
1178 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1179 1865
1180#else 1866#else
1181 1867
1182 ev_tstamp ev_rt_now; 1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1183 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
1184 #include "ev_vars.h" 1870 #include "ev_vars.h"
1185 #undef VAR 1871 #undef VAR
1186 1872
1187 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
… …
1202 1888
1203/*****************************************************************************/ 1889/*****************************************************************************/
1204 1890
1205#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
1206ev_tstamp 1892ev_tstamp
1207ev_time (void) 1893ev_time (void) EV_NOEXCEPT
1208{ 1894{
1209#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
1210 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
1211 { 1897 {
1212 struct timespec ts; 1898 struct timespec ts;
… …
1236 return ev_time (); 1922 return ev_time ();
1237} 1923}
1238 1924
1239#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
1240ev_tstamp 1926ev_tstamp
1241ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
1242{ 1928{
1243 return ev_rt_now; 1929 return ev_rt_now;
1244} 1930}
1245#endif 1931#endif
1246 1932
1247void 1933void
1248ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1249{ 1935{
1250 if (delay > 0.) 1936 if (delay > 0.)
1251 { 1937 {
1252#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
1253 struct timespec ts; 1939 struct timespec ts;
1254 1940
1255 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
1256 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
1257#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
1258 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
1259#else 1947#else
1260 struct timeval tv; 1948 struct timeval tv;
1261 1949
1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1281 1969
1282 do 1970 do
1283 ncur <<= 1; 1971 ncur <<= 1;
1284 while (cnt > ncur); 1972 while (cnt > ncur);
1285 1973
1286 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1287 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1288 { 1976 {
1289 ncur *= elem; 1977 ncur *= elem;
1290 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1291 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
1293 } 1981 }
1294 1982
1295 return ncur; 1983 return ncur;
1296} 1984}
1297 1985
1298static void * noinline ecb_cold 1986noinline ecb_cold
1987static void *
1299array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
1300{ 1989{
1301 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
1302 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
1303} 1992}
1304 1993
1994#define array_needsize_noinit(base,count)
1995
1305#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
1306 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1307 1998
1308#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
1309 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
1310 { \ 2001 { \
1311 int ecb_unused ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
1312 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
1313 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
1314 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
1315 } 2006 }
1316 2007
… …
1328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1329 2020
1330/*****************************************************************************/ 2021/*****************************************************************************/
1331 2022
1332/* dummy callback for pending events */ 2023/* dummy callback for pending events */
1333static void noinline 2024noinline
2025static void
1334pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
1335{ 2027{
1336} 2028}
1337 2029
1338void noinline 2030noinline
2031void
1339ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1340{ 2033{
1341 W w_ = (W)w; 2034 W w_ = (W)w;
1342 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
1343 2036
1344 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
1345 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
1346 else 2039 else
1347 { 2040 {
1348 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
1349 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1350 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
1351 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
1352 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
1353} 2048}
1354 2049
1355inline_speed void 2050inline_speed void
1356feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
1357{ 2052{
1358 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1359 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
1360} 2055}
1361 2056
1362inline_size void 2057inline_size void
1363feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
1403 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
1405} 2100}
1406 2101
1407void 2102void
1408ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1409{ 2104{
1410 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
1411 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
1412} 2107}
1413 2108
… …
1471 2166
1472 fdchangecnt = 0; 2167 fdchangecnt = 0;
1473} 2168}
1474 2169
1475/* something about the given fd changed */ 2170/* something about the given fd changed */
1476inline_size void 2171inline_size
2172void
1477fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1478{ 2174{
1479 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1480 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1481 2177
1482 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1483 { 2179 {
1484 ++fdchangecnt; 2180 ++fdchangecnt;
1485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1486 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1487 } 2183 }
1488} 2184}
1489 2185
1490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1491inline_speed void ecb_cold 2187inline_speed ecb_cold void
1492fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1493{ 2189{
1494 ev_io *w; 2190 ev_io *w;
1495 2191
1496 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1500 } 2196 }
1501} 2197}
1502 2198
1503/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1504inline_size int ecb_cold 2200inline_size ecb_cold int
1505fd_valid (int fd) 2201fd_valid (int fd)
1506{ 2202{
1507#ifdef _WIN32 2203#ifdef _WIN32
1508 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1509#else 2205#else
1510 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1511#endif 2207#endif
1512} 2208}
1513 2209
1514/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1515static void noinline ecb_cold 2211noinline ecb_cold
2212static void
1516fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1517{ 2214{
1518 int fd; 2215 int fd;
1519 2216
1520 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1522 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1523 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1524} 2221}
1525 2222
1526/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1527static void noinline ecb_cold 2224noinline ecb_cold
2225static void
1528fd_enomem (EV_P) 2226fd_enomem (EV_P)
1529{ 2227{
1530 int fd; 2228 int fd;
1531 2229
1532 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1536 break; 2234 break;
1537 } 2235 }
1538} 2236}
1539 2237
1540/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1541static void noinline 2239noinline
2240static void
1542fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1543{ 2242{
1544 int fd; 2243 int fd;
1545 2244
1546 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1727 2426
1728/*****************************************************************************/ 2427/*****************************************************************************/
1729 2428
1730#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1731 2430
1732static void noinline ecb_cold 2431noinline ecb_cold
2432static void
1733evpipe_init (EV_P) 2433evpipe_init (EV_P)
1734{ 2434{
1735 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1736 { 2436 {
2437 int fds [2];
2438
1737# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1740 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1741 2444
1742 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1743 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1744 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1745 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1746 ev_io_set (&pipe_w, evfd, EV_READ); 2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
2477inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481
2482 if (expect_true (*flag))
2483 return;
2484
2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
2501#if EV_USE_EVENTFD
2502 if (evpipe [0] < 0)
2503 {
2504 uint64_t counter = 1;
2505 write (evpipe [1], &counter, sizeof (uint64_t));
1747 } 2506 }
1748 else 2507 else
1749# endif 2508#endif
1750 { 2509 {
1751 while (pipe (evpipe)) 2510#ifdef _WIN32
1752 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1753 2512 DWORD sent;
1754 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1755 fd_intern (evpipe [1]); 2514 buf.len = 1;
1756 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1757 } 2516#else
1758
1759 ev_io_start (EV_A_ &pipe_w);
1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1761 }
1762}
1763
1764inline_speed void
1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1766{
1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1784 old_errno = errno; /* save errno because write will clobber it */
1785
1786#if EV_USE_EVENTFD
1787 if (evfd >= 0)
1788 {
1789 uint64_t counter = 1;
1790 write (evfd, &counter, sizeof (uint64_t));
1791 }
1792 else
1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1800 write (evpipe [1], &(evpipe [1]), 1); 2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1801 } 2519 }
1802 2520
1803 errno = old_errno; 2521 errno = old_errno;
1804 } 2522 }
1805} 2523}
… …
1812 int i; 2530 int i;
1813 2531
1814 if (revents & EV_READ) 2532 if (revents & EV_READ)
1815 { 2533 {
1816#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1817 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1818 { 2536 {
1819 uint64_t counter; 2537 uint64_t counter;
1820 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1821 } 2539 }
1822 else 2540 else
1823#endif 2541#endif
1824 { 2542 {
1825 char dummy; 2543 char dummy[4];
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1827 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
1828 } 2554 }
1829 } 2555 }
1830 2556
1831 pipe_write_skipped = 0; 2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1832 2560
1833#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1834 if (sig_pending) 2562 if (sig_pending)
1835 { 2563 {
1836 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1837 2567
1838 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1839 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1840 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1841 } 2571 }
… …
1843 2573
1844#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1845 if (async_pending) 2575 if (async_pending)
1846 { 2576 {
1847 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1848 2580
1849 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1850 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1851 { 2583 {
1852 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1853 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1854 } 2587 }
1855 } 2588 }
1856#endif 2589#endif
1857} 2590}
1858 2591
1859/*****************************************************************************/ 2592/*****************************************************************************/
1860 2593
1861void 2594void
1862ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1863{ 2596{
1864#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1865 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1866 2601
1867 if (!EV_A) 2602 if (!EV_A)
1868 return; 2603 return;
1869#endif 2604#endif
1870 2605
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1; 2606 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending); 2607 evpipe_write (EV_A_ &sig_pending);
1876} 2608}
1877 2609
1878static void 2610static void
… …
1883#endif 2615#endif
1884 2616
1885 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1886} 2618}
1887 2619
1888void noinline 2620noinline
2621void
1889ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1890{ 2623{
1891 WL w; 2624 WL w;
1892 2625
1893 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1894 return; 2627 return;
1895 2628
1896 --signum; 2629 --signum;
1897 2630
1898#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1902 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1903 return; 2636 return;
1904#endif 2637#endif
1905 2638
1906 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1907 2641
1908 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1910} 2644}
1911 2645
… …
1999# include "ev_port.c" 2733# include "ev_port.c"
2000#endif 2734#endif
2001#if EV_USE_KQUEUE 2735#if EV_USE_KQUEUE
2002# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
2003#endif 2737#endif
2738#if EV_USE_LINUXAIO
2739# include "ev_linuxaio.c"
2740#endif
2004#if EV_USE_EPOLL 2741#if EV_USE_EPOLL
2005# include "ev_epoll.c" 2742# include "ev_epoll.c"
2006#endif 2743#endif
2007#if EV_USE_POLL 2744#if EV_USE_POLL
2008# include "ev_poll.c" 2745# include "ev_poll.c"
2009#endif 2746#endif
2010#if EV_USE_SELECT 2747#if EV_USE_SELECT
2011# include "ev_select.c" 2748# include "ev_select.c"
2012#endif 2749#endif
2013 2750
2014int ecb_cold 2751ecb_cold int
2015ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
2016{ 2753{
2017 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
2018} 2755}
2019 2756
2020int ecb_cold 2757ecb_cold int
2021ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
2022{ 2759{
2023 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
2024} 2761}
2025 2762
2026/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
2027int inline_size ecb_cold 2764inline_size ecb_cold int
2028enable_secure (void) 2765enable_secure (void)
2029{ 2766{
2030#ifdef _WIN32 2767#ifdef _WIN32
2031 return 0; 2768 return 0;
2032#else 2769#else
2033 return getuid () != geteuid () 2770 return getuid () != geteuid ()
2034 || getgid () != getegid (); 2771 || getgid () != getegid ();
2035#endif 2772#endif
2036} 2773}
2037 2774
2038unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2039ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
2040{ 2778{
2041 unsigned int flags = 0; 2779 unsigned int flags = 0;
2042 2780
2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2044 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2045 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2046 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2047 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2048 2787
2049 return flags; 2788 return flags;
2050} 2789}
2051 2790
2052unsigned int ecb_cold 2791ecb_cold
2792unsigned int
2053ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
2054{ 2794{
2055 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
2056 2796
2057#ifndef __NetBSD__ 2797#ifndef __NetBSD__
2058 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
2066#endif 2806#endif
2067#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
2068 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2069#endif 2809#endif
2070 2810
2811 /* TODO: linuxaio is very experimental */
2812 flags &= ~EVBACKEND_LINUXAIO;
2813
2071 return flags; 2814 return flags;
2072} 2815}
2073 2816
2074unsigned int ecb_cold 2817ecb_cold
2818unsigned int
2075ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
2076{ 2820{
2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2078 2822
2079 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2080 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2082 2826
2083 return flags; 2827 return flags;
2084} 2828}
2085 2829
2086unsigned int 2830unsigned int
2087ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
2088{ 2832{
2089 return backend; 2833 return backend;
2090} 2834}
2091 2835
2092#if EV_FEATURE_API 2836#if EV_FEATURE_API
2093unsigned int 2837unsigned int
2094ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
2095{ 2839{
2096 return loop_count; 2840 return loop_count;
2097} 2841}
2098 2842
2099unsigned int 2843unsigned int
2100ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
2101{ 2845{
2102 return loop_depth; 2846 return loop_depth;
2103} 2847}
2104 2848
2105void 2849void
2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2107{ 2851{
2108 io_blocktime = interval; 2852 io_blocktime = interval;
2109} 2853}
2110 2854
2111void 2855void
2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 2857{
2114 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
2115} 2859}
2116 2860
2117void 2861void
2118ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2119{ 2863{
2120 userdata = data; 2864 userdata = data;
2121} 2865}
2122 2866
2123void * 2867void *
2124ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
2125{ 2869{
2126 return userdata; 2870 return userdata;
2127} 2871}
2128 2872
2129void 2873void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2131{ 2875{
2132 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
2133} 2877}
2134 2878
2135void 2879void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2137{ 2881{
2138 release_cb = release; 2882 release_cb = release;
2139 acquire_cb = acquire; 2883 acquire_cb = acquire;
2140} 2884}
2141#endif 2885#endif
2142 2886
2143/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
2144static void noinline ecb_cold 2888noinline ecb_cold
2889static void
2145loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2146{ 2891{
2147 if (!backend) 2892 if (!backend)
2148 { 2893 {
2149 origflags = flags; 2894 origflags = flags;
2150 2895
… …
2195#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
2196 async_pending = 0; 2941 async_pending = 0;
2197#endif 2942#endif
2198 pipe_write_skipped = 0; 2943 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0; 2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2200#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif 2949#endif
2203#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2206 2953
2207 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
2208 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
2209 2956
2210#if EV_USE_IOCP 2957#if EV_USE_IOCP
2211 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2212#endif 2959#endif
2213#if EV_USE_PORT 2960#if EV_USE_PORT
2214 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2215#endif 2962#endif
2216#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
2217 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2218#endif 2968#endif
2219#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
2220 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2221#endif 2971#endif
2222#if EV_USE_POLL 2972#if EV_USE_POLL
2223 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2224#endif 2974#endif
2225#if EV_USE_SELECT 2975#if EV_USE_SELECT
2226 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2227#endif 2977#endif
2228 2978
2229 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
2230 2980
2231#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2234#endif 2984#endif
2235 } 2985 }
2236} 2986}
2237 2987
2238/* free up a loop structure */ 2988/* free up a loop structure */
2239void ecb_cold 2989ecb_cold
2990void
2240ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
2241{ 2992{
2242 int i; 2993 int i;
2243 2994
2244#if EV_MULTIPLICITY 2995#if EV_MULTIPLICITY
… …
2255 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
2256 } 3007 }
2257#endif 3008#endif
2258 3009
2259#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2261 { 3012 {
2262 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
2264 } 3015 }
2265#endif 3016#endif
… …
2267 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
2268 { 3019 {
2269 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
2270 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
2271 3022
2272#if EV_USE_EVENTFD
2273 if (evfd >= 0)
2274 close (evfd);
2275#endif
2276
2277 if (evpipe [0] >= 0)
2278 {
2279 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2280 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2281 }
2282 } 3025 }
2283 3026
2284#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
2286 close (sigfd); 3029 close (sigfd);
… …
2293 3036
2294 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
2295 close (backend_fd); 3038 close (backend_fd);
2296 3039
2297#if EV_USE_IOCP 3040#if EV_USE_IOCP
2298 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2299#endif 3042#endif
2300#if EV_USE_PORT 3043#if EV_USE_PORT
2301 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2302#endif 3045#endif
2303#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
2304 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2305#endif 3051#endif
2306#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
2307 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2308#endif 3054#endif
2309#if EV_USE_POLL 3055#if EV_USE_POLL
2310 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2311#endif 3057#endif
2312#if EV_USE_SELECT 3058#if EV_USE_SELECT
2313 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2314#endif 3060#endif
2315 3061
2316 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
2317 { 3063 {
2318 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
2360 3106
2361inline_size void 3107inline_size void
2362loop_fork (EV_P) 3108loop_fork (EV_P)
2363{ 3109{
2364#if EV_USE_PORT 3110#if EV_USE_PORT
2365 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2366#endif 3112#endif
2367#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
2368 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2369#endif 3118#endif
2370#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
2371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2372#endif 3121#endif
2373#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
2374 infy_fork (EV_A); 3123 infy_fork (EV_A);
2375#endif 3124#endif
2376 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2377 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
2378 { 3128 {
2379 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2380 3130
2381 ev_ref (EV_A); 3131 ev_ref (EV_A);
2382 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
2383 3133
2384#if EV_USE_EVENTFD
2385 if (evfd >= 0)
2386 close (evfd);
2387#endif
2388
2389 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
2390 {
2391 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
2392 EV_WIN32_CLOSE_FD (evpipe [1]);
2393 }
2394 3136
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2396 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
2397 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
2398 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399#endif
2400 } 3140 }
3141#endif
2401 3142
2402 postfork = 0; 3143 postfork = 0;
2403} 3144}
2404 3145
2405#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
2406 3147
3148ecb_cold
2407struct ev_loop * ecb_cold 3149struct ev_loop *
2408ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
2409{ 3151{
2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2411 3153
2412 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
2413 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
2420} 3162}
2421 3163
2422#endif /* multiplicity */ 3164#endif /* multiplicity */
2423 3165
2424#if EV_VERIFY 3166#if EV_VERIFY
2425static void noinline ecb_cold 3167noinline ecb_cold
3168static void
2426verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
2427{ 3170{
2428 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2429 3172
2430 if (w->pending) 3173 if (w->pending)
2431 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2432} 3175}
2433 3176
2434static void noinline ecb_cold 3177noinline ecb_cold
3178static void
2435verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
2436{ 3180{
2437 int i; 3181 int i;
2438 3182
2439 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2444 3188
2445 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2446 } 3190 }
2447} 3191}
2448 3192
2449static void noinline ecb_cold 3193noinline ecb_cold
3194static void
2450array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
2451{ 3196{
2452 while (cnt--) 3197 while (cnt--)
2453 { 3198 {
2454 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2457} 3202}
2458#endif 3203#endif
2459 3204
2460#if EV_FEATURE_API 3205#if EV_FEATURE_API
2461void ecb_cold 3206void ecb_cold
2462ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2463{ 3208{
2464#if EV_VERIFY 3209#if EV_VERIFY
2465 int i; 3210 int i;
2466 WL w; 3211 WL w, w2;
2467 3212
2468 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2469 3214
2470 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2471 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2473 3218
2474 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2475 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2476 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2477 { 3225 {
2478 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
2479 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2480 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2481 } 3236 }
3237 }
2482 3238
2483 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2484 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2485 3241
2486#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2532#endif 3288#endif
2533} 3289}
2534#endif 3290#endif
2535 3291
2536#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2537struct ev_loop * ecb_cold 3294struct ev_loop *
2538#else 3295#else
2539int 3296int
2540#endif 3297#endif
2541ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2542{ 3299{
2543 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2544 { 3301 {
2545#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2546 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2565 3322
2566 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2567} 3324}
2568 3325
2569void 3326void
2570ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2571{ 3328{
2572 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2573} 3330}
2574 3331
2575/*****************************************************************************/ 3332/*****************************************************************************/
2576 3333
2577void 3334void
… …
2579{ 3336{
2580 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2581} 3338}
2582 3339
2583unsigned int 3340unsigned int
2584ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2585{ 3342{
2586 int pri; 3343 int pri;
2587 unsigned int count = 0; 3344 unsigned int count = 0;
2588 3345
2589 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2590 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2591 3348
2592 return count; 3349 return count;
2593} 3350}
2594 3351
2595void noinline 3352noinline
3353void
2596ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2597{ 3355{
2598 int pri; 3356 pendingpri = NUMPRI;
2599 3357
2600 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2601 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2602 { 3364 {
2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2604 3366
2605 p->w->pending = 0; 3367 p->w->pending = 0;
2606 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2607 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2608 } 3370 }
3371 }
3372 while (pendingpri);
2609} 3373}
2610 3374
2611#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2612/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
2671 } 3435 }
2672} 3436}
2673 3437
2674#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2675 3439
2676static void noinline 3440noinline
3441static void
2677periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2678{ 3443{
2679 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2680 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2681 3446
… …
2703{ 3468{
2704 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2705 3470
2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2707 { 3472 {
2708 int feed_count = 0;
2709
2710 do 3473 do
2711 { 3474 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713 3476
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2741 } 3504 }
2742} 3505}
2743 3506
2744/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2745/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2746static void noinline ecb_cold 3509noinline ecb_cold
3510static void
2747periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2748{ 3512{
2749 int i; 3513 int i;
2750 3514
2751 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2764 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2765} 3529}
2766#endif 3530#endif
2767 3531
2768/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2769static void noinline ecb_cold 3533noinline ecb_cold
3534static void
2770timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2771{ 3536{
2772 int i; 3537 int i;
2773 3538
2774 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2848 3613
2849 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2850 } 3615 }
2851} 3616}
2852 3617
2853void 3618int
2854ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2855{ 3620{
2856#if EV_FEATURE_API 3621#if EV_FEATURE_API
2857 ++loop_depth; 3622 ++loop_depth;
2858#endif 3623#endif
… …
2971#endif 3736#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2973 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975 3740
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2977 3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
2978 if (pipe_write_skipped) 3744 if (pipe_write_skipped)
2979 { 3745 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 } 3748 }
… …
3015 loop_done = EVBREAK_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
3016 3782
3017#if EV_FEATURE_API 3783#if EV_FEATURE_API
3018 --loop_depth; 3784 --loop_depth;
3019#endif 3785#endif
3020}
3021 3786
3787 return activecnt;
3788}
3789
3022void 3790void
3023ev_break (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
3024{ 3792{
3025 loop_done = how; 3793 loop_done = how;
3026} 3794}
3027 3795
3028void 3796void
3029ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
3030{ 3798{
3031 ++activecnt; 3799 ++activecnt;
3032} 3800}
3033 3801
3034void 3802void
3035ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
3036{ 3804{
3037 --activecnt; 3805 --activecnt;
3038} 3806}
3039 3807
3040void 3808void
3041ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
3042{ 3810{
3043 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
3044} 3812}
3045 3813
3046void 3814void
3047ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
3048{ 3816{
3049 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
3050} 3818}
3051 3819
3052void 3820void
3053ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
3054{ 3822{
3055 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
3056 3824
3057 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097 w->pending = 0; 3865 w->pending = 0;
3098 } 3866 }
3099} 3867}
3100 3868
3101int 3869int
3102ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3103{ 3871{
3104 W w_ = (W)w; 3872 W w_ = (W)w;
3105 int pending = w_->pending; 3873 int pending = w_->pending;
3106 3874
3107 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
3139 w->active = 0; 3907 w->active = 0;
3140} 3908}
3141 3909
3142/*****************************************************************************/ 3910/*****************************************************************************/
3143 3911
3144void noinline 3912noinline
3913void
3145ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 3915{
3147 int fd = w->fd; 3916 int fd = w->fd;
3148 3917
3149 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
3150 return; 3919 return;
… …
3153 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3922 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3154 3923
3155 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3156 3925
3157 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3159 wlist_add (&anfds[fd].head, (WL)w); 3928 wlist_add (&anfds[fd].head, (WL)w);
3929
3930 /* common bug, apparently */
3931 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3160 3932
3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3933 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3162 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
3163 3935
3164 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
3165} 3937}
3166 3938
3167void noinline 3939noinline
3940void
3168ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3169{ 3942{
3170 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
3171 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
3172 return; 3945 return;
3173 3946
… …
3181 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3182 3955
3183 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
3184} 3957}
3185 3958
3186void noinline 3959noinline
3960void
3187ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3188{ 3962{
3189 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
3190 return; 3964 return;
3191 3965
3192 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
3195 3969
3196 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3197 3971
3198 ++timercnt; 3972 ++timercnt;
3199 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3200 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3201 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
3202 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
3203 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
3204 3978
3205 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
3206 3980
3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3981 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3208} 3982}
3209 3983
3210void noinline 3984noinline
3985void
3211ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3212{ 3987{
3213 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
3214 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
3215 return; 3990 return;
3216 3991
… …
3235 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
3236 4011
3237 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
3238} 4013}
3239 4014
3240void noinline 4015noinline
4016void
3241ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3242{ 4018{
3243 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
3244 4022
3245 if (ev_is_active (w)) 4023 if (ev_is_active (w))
3246 { 4024 {
3247 if (w->repeat) 4025 if (w->repeat)
3248 { 4026 {
… …
3261 4039
3262 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
3263} 4041}
3264 4042
3265ev_tstamp 4043ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w) 4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3267{ 4045{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269} 4047}
3270 4048
3271#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
3272void noinline 4050noinline
4051void
3273ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3274{ 4053{
3275 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
3276 return; 4055 return;
3277 4056
3278 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
… …
3287 4066
3288 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
3289 4068
3290 ++periodiccnt; 4069 ++periodiccnt;
3291 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3292 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3293 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3294 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
3295 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
3296 4075
3297 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3298 4077
3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4078 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3300} 4079}
3301 4080
3302void noinline 4081noinline
4082void
3303ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3304{ 4084{
3305 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
3307 return; 4087 return;
3308 4088
… …
3325 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
3326 4106
3327 EV_FREQUENT_CHECK; 4107 EV_FREQUENT_CHECK;
3328} 4108}
3329 4109
3330void noinline 4110noinline
4111void
3331ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3332{ 4113{
3333 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
3334 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
3335 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
3336} 4117}
… …
3340# define SA_RESTART 0 4121# define SA_RESTART 0
3341#endif 4122#endif
3342 4123
3343#if EV_SIGNAL_ENABLE 4124#if EV_SIGNAL_ENABLE
3344 4125
3345void noinline 4126noinline
4127void
3346ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3347{ 4129{
3348 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
3349 return; 4131 return;
3350 4132
3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4133 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3353#if EV_MULTIPLICITY 4135#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops", 4136 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4137 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3356 4138
3357 signals [w->signum - 1].loop = EV_A; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
3358#endif 4141#endif
3359 4142
3360 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
3361 4144
3362#if EV_USE_SIGNALFD 4145#if EV_USE_SIGNALFD
… …
3421 } 4204 }
3422 4205
3423 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
3424} 4207}
3425 4208
3426void noinline 4209noinline
4210void
3427ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3428{ 4212{
3429 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
3430 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
3431 return; 4215 return;
3432 4216
… …
3463#endif 4247#endif
3464 4248
3465#if EV_CHILD_ENABLE 4249#if EV_CHILD_ENABLE
3466 4250
3467void 4251void
3468ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3469{ 4253{
3470#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4255 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3472#endif 4256#endif
3473 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
… …
3480 4264
3481 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3482} 4266}
3483 4267
3484void 4268void
3485ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3486{ 4270{
3487 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3488 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3489 return; 4273 return;
3490 4274
… …
3507 4291
3508#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
3509#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3510#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
3511 4295
3512static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4296noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3513 4297
3514#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
3515 4299
3516/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4300/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3518 4302
3519static void noinline 4303noinline
4304static void
3520infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
3521{ 4306{
3522 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); 4307 w->wd = inotify_add_watch (fs_fd, w->path,
4308 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4309 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4310 | IN_DONT_FOLLOW | IN_MASK_ADD);
3523 4311
3524 if (w->wd >= 0) 4312 if (w->wd >= 0)
3525 { 4313 {
3526 struct statfs sfs; 4314 struct statfs sfs;
3527 4315
… …
3531 4319
3532 if (!fs_2625) 4320 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4321 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs) 4322 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */ 4323 && (sfs.f_type == 0x1373 /* devfs */
4324 || sfs.f_type == 0x4006 /* fat */
4325 || sfs.f_type == 0x4d44 /* msdos */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */ 4326 || sfs.f_type == 0xEF53 /* ext2/3 */
4327 || sfs.f_type == 0x72b6 /* jffs2 */
4328 || sfs.f_type == 0x858458f6 /* ramfs */
4329 || sfs.f_type == 0x5346544e /* ntfs */
3537 || sfs.f_type == 0x3153464a /* jfs */ 4330 || sfs.f_type == 0x3153464a /* jfs */
4331 || sfs.f_type == 0x9123683e /* btrfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */ 4332 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */ 4333 || sfs.f_type == 0x01021994 /* tmpfs */
3540 || sfs.f_type == 0x58465342 /* xfs */)) 4334 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4335 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else 4336 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4337 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3544 } 4338 }
… …
3579 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3580 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
3581 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3582} 4376}
3583 4377
3584static void noinline 4378noinline
4379static void
3585infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
3586{ 4381{
3587 int slot; 4382 int slot;
3588 int wd = w->wd; 4383 int wd = w->wd;
3589 4384
… …
3596 4391
3597 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
3598 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
3599} 4394}
3600 4395
3601static void noinline 4396noinline
4397static void
3602infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3603{ 4399{
3604 if (slot < 0) 4400 if (slot < 0)
3605 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
3606 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3642 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4438 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3643 ofs += sizeof (struct inotify_event) + ev->len; 4439 ofs += sizeof (struct inotify_event) + ev->len;
3644 } 4440 }
3645} 4441}
3646 4442
3647inline_size void ecb_cold 4443inline_size ecb_cold
4444void
3648ev_check_2625 (EV_P) 4445ev_check_2625 (EV_P)
3649{ 4446{
3650 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
3651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4448 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3652 */ 4449 */
… …
3657} 4454}
3658 4455
3659inline_size int 4456inline_size int
3660infy_newfd (void) 4457infy_newfd (void)
3661{ 4458{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4459#if defined IN_CLOEXEC && defined IN_NONBLOCK
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4460 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0) 4461 if (fd >= 0)
3665 return fd; 4462 return fd;
3666#endif 4463#endif
3667 return inotify_init (); 4464 return inotify_init ();
… …
3742#else 4539#else
3743# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
3744#endif 4541#endif
3745 4542
3746void 4543void
3747ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3748{ 4545{
3749 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
3750 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
3751 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
3752 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
3753} 4550}
3754 4551
3755static void noinline 4552noinline
4553static void
3756stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3757{ 4555{
3758 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3759 4557
3760 ev_statdata prev = w->attr; 4558 ev_statdata prev = w->attr;
… …
3791 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
3792 } 4590 }
3793} 4591}
3794 4592
3795void 4593void
3796ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3797{ 4595{
3798 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
3799 return; 4597 return;
3800 4598
3801 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
3822 4620
3823 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3824} 4622}
3825 4623
3826void 4624void
3827ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3828{ 4626{
3829 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3830 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3831 return; 4629 return;
3832 4630
… …
3848} 4646}
3849#endif 4647#endif
3850 4648
3851#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
3852void 4650void
3853ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4652{
3855 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3856 return; 4654 return;
3857 4655
3858 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
3863 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
3864 4662
3865 ++idleall; 4663 ++idleall;
3866 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
3867 4665
3868 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4666 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3869 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
3870 } 4668 }
3871 4669
3872 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
3873} 4671}
3874 4672
3875void 4673void
3876ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3877{ 4675{
3878 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
3880 return; 4678 return;
3881 4679
… …
3895} 4693}
3896#endif 4694#endif
3897 4695
3898#if EV_PREPARE_ENABLE 4696#if EV_PREPARE_ENABLE
3899void 4697void
3900ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3901{ 4699{
3902 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
3903 return; 4701 return;
3904 4702
3905 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
3906 4704
3907 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
3908 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3909 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
3910 4708
3911 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
3912} 4710}
3913 4711
3914void 4712void
3915ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3916{ 4714{
3917 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
3919 return; 4717 return;
3920 4718
… …
3933} 4731}
3934#endif 4732#endif
3935 4733
3936#if EV_CHECK_ENABLE 4734#if EV_CHECK_ENABLE
3937void 4735void
3938ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3939{ 4737{
3940 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
3941 return; 4739 return;
3942 4740
3943 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
3944 4742
3945 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
3946 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3947 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
3948 4746
3949 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
3950} 4748}
3951 4749
3952void 4750void
3953ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3954{ 4752{
3955 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
3956 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
3957 return; 4755 return;
3958 4756
… …
3970 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
3971} 4769}
3972#endif 4770#endif
3973 4771
3974#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
3975void noinline 4773noinline
4774void
3976ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3977{ 4776{
3978 ev_run (w->other, EVRUN_NOWAIT); 4777 ev_run (w->other, EVRUN_NOWAIT);
3979} 4778}
3980 4779
3981static void 4780static void
… …
4029 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
4030} 4829}
4031#endif 4830#endif
4032 4831
4033void 4832void
4034ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4035{ 4834{
4036 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
4037 return; 4836 return;
4038 4837
4039 { 4838 {
… …
4060 4859
4061 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
4062} 4861}
4063 4862
4064void 4863void
4065ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4066{ 4865{
4067 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
4068 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
4069 return; 4868 return;
4070 4869
… …
4080} 4879}
4081#endif 4880#endif
4082 4881
4083#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
4084void 4883void
4085ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4086{ 4885{
4087 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
4088 return; 4887 return;
4089 4888
4090 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4091 4890
4092 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
4093 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4094 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
4095 4894
4096 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
4097} 4896}
4098 4897
4099void 4898void
4100ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4101{ 4900{
4102 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
4103 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
4104 return; 4903 return;
4105 4904
… …
4118} 4917}
4119#endif 4918#endif
4120 4919
4121#if EV_CLEANUP_ENABLE 4920#if EV_CLEANUP_ENABLE
4122void 4921void
4123ev_cleanup_start (EV_P_ ev_cleanup *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4124{ 4923{
4125 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
4126 return; 4925 return;
4127 4926
4128 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
4129 4928
4130 ev_start (EV_A_ (W)w, ++cleanupcnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
4131 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4132 cleanups [cleanupcnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
4133 4932
4134 /* cleanup watchers should never keep a refcount on the loop */ 4933 /* cleanup watchers should never keep a refcount on the loop */
4135 ev_unref (EV_A); 4934 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
4137} 4936}
4138 4937
4139void 4938void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4141{ 4940{
4142 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
4144 return; 4943 return;
4145 4944
… …
4159} 4958}
4160#endif 4959#endif
4161 4960
4162#if EV_ASYNC_ENABLE 4961#if EV_ASYNC_ENABLE
4163void 4962void
4164ev_async_start (EV_P_ ev_async *w) 4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4165{ 4964{
4166 if (expect_false (ev_is_active (w))) 4965 if (expect_false (ev_is_active (w)))
4167 return; 4966 return;
4168 4967
4169 w->sent = 0; 4968 w->sent = 0;
… …
4171 evpipe_init (EV_A); 4970 evpipe_init (EV_A);
4172 4971
4173 EV_FREQUENT_CHECK; 4972 EV_FREQUENT_CHECK;
4174 4973
4175 ev_start (EV_A_ (W)w, ++asynccnt); 4974 ev_start (EV_A_ (W)w, ++asynccnt);
4176 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4975 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4177 asyncs [asynccnt - 1] = w; 4976 asyncs [asynccnt - 1] = w;
4178 4977
4179 EV_FREQUENT_CHECK; 4978 EV_FREQUENT_CHECK;
4180} 4979}
4181 4980
4182void 4981void
4183ev_async_stop (EV_P_ ev_async *w) 4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4184{ 4983{
4185 clear_pending (EV_A_ (W)w); 4984 clear_pending (EV_A_ (W)w);
4186 if (expect_false (!ev_is_active (w))) 4985 if (expect_false (!ev_is_active (w)))
4187 return; 4986 return;
4188 4987
… …
4199 4998
4200 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
4201} 5000}
4202 5001
4203void 5002void
4204ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4205{ 5004{
4206 w->sent = 1; 5005 w->sent = 1;
4207 evpipe_write (EV_A_ &async_pending); 5006 evpipe_write (EV_A_ &async_pending);
4208} 5007}
4209#endif 5008#endif
… …
4246 5045
4247 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5046 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4248} 5047}
4249 5048
4250void 5049void
4251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5050ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4252{ 5051{
4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5052 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4254
4255 if (expect_false (!once))
4256 {
4257 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4258 return;
4259 }
4260 5053
4261 once->cb = cb; 5054 once->cb = cb;
4262 once->arg = arg; 5055 once->arg = arg;
4263 5056
4264 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
4277} 5070}
4278 5071
4279/*****************************************************************************/ 5072/*****************************************************************************/
4280 5073
4281#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
4282void ecb_cold 5075ecb_cold
5076void
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5077ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4284{ 5078{
4285 int i, j; 5079 int i, j;
4286 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
4287 5081
4288 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
4394 5188
4395#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
4396 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
4397#endif 5191#endif
4398 5192
4399EV_CPP(})
4400

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