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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 1.491 by root, Thu Jun 20 23:14:53 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# define EV_USE_LINUXAIO 0
331#endif
332
302#ifndef EV_USE_INOTIFY 333#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 335# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 336# else
306# define EV_USE_INOTIFY 0 337# define EV_USE_INOTIFY 0
… …
347 378
348#ifndef EV_HEAP_CACHE_AT 379#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 380# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 381#endif
351 382
383#ifdef __ANDROID__
384/* supposedly, android doesn't typedef fd_mask */
385# undef EV_USE_SELECT
386# define EV_USE_SELECT 0
387/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
388# undef EV_USE_CLOCK_SYSCALL
389# define EV_USE_CLOCK_SYSCALL 0
390#endif
391
392/* aix's poll.h seems to cause lots of trouble */
393#ifdef _AIX
394/* AIX has a completely broken poll.h header */
395# undef EV_USE_POLL
396# define EV_USE_POLL 0
397#endif
398
399#if EV_USE_LINUXAIO
400# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
401#endif
402
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* 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. */ 404/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 406# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
360# else 411# else
… …
363# endif 414# endif
364#endif 415#endif
365 416
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 418
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 419#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
377#endif 422#endif
378 423
… …
386# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
387#endif 432#endif
388 433
389#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
393# endif 446# endif
394#endif 447#endif
395 448
396#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
397# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
403# endif 456# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 457#endif
409 458
410#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 461# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
471/* 520/*
472 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
473 * 522 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 525 * All rights reserved.
477 * 526 *
478 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * 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 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
498 */ 558 */
499 559
500#ifndef ECB_H 560#ifndef ECB_H
501#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
502 565
503#ifdef _WIN32 566#ifdef _WIN32
504 typedef signed char int8_t; 567 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
516 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
517#else 589#else
518 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
519#endif 608#endif
520 609
521/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 613 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 614 * 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. 615 * an issue with that they should have done it right in the first place.
527 */ 616 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
531 #else 619#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
534#endif 662#endif
535 663
536/*****************************************************************************/ 664/*****************************************************************************/
537 665
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* 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 */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 668
541#if ECB_NO_THREADS || ECB_NO_SMP 669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 675#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
545#endif 684#endif
546 685
547#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 688 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 689 #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 */ 690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 692 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 694 #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 */ 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* 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__ ) \ 705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ 706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #define ECB_MEMORY_FENCE \ 712 #elif __aarch64__
564 do { \ 713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
565 int null = 0; \ 714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ 715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
567 while (0) 716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
718 #elif defined __s390__ || defined __s390x__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
724 #elif defined __alpha__
725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
726 #elif defined __hppa__
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
729 #elif defined __ia64__
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
568 #endif 737 #endif
569 #endif 738 #endif
570#endif 739#endif
571 740
572#ifndef ECB_MEMORY_FENCE 741#ifndef ECB_MEMORY_FENCE
742 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
574 #define ECB_MEMORY_FENCE __sync_synchronize () 755 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32) 767 #elif defined _WIN32
583 #include <WinNT.h> 768 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
771 #include <mbarrier.h>
772 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
775 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync ()
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
585 #endif 794 #endif
586#endif 795#endif
587 796
588#ifndef ECB_MEMORY_FENCE 797#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS 798 #if !ECB_AVOID_PTHREADS
… …
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 810 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) 811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif 812 #endif
604#endif 813#endif
605 814
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif 817#endif
609 818
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif 821#endif
613 822
614/*****************************************************************************/ 823/*****************************************************************************/
615 824
616#define ECB_C99 (__STDC_VERSION__ >= 199901L) 825#if ECB_CPP
617
618#if __cplusplus
619 #define ecb_inline static inline 826 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5) 827#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__ 828 #define ecb_inline static __inline__
622#elif ECB_C99 829#elif ECB_C99
623 #define ecb_inline static inline 830 #define ecb_inline static inline
… …
637 844
638#define ECB_CONCAT_(a, b) a ## b 845#define ECB_CONCAT_(a, b) a ## b
639#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
640#define ECB_STRINGIFY_(a) # a 847#define ECB_STRINGIFY_(a) # a
641#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
642 850
643#define ecb_function_ ecb_inline 851#define ecb_function_ ecb_inline
644 852
645#if ECB_GCC_VERSION(3,1) 853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
646 #define ecb_attribute(attrlist) __attribute__(attrlist) 854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
647 #define ecb_is_constant(expr) __builtin_constant_p (expr) 860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
871#else
872 #define ecb_expect(expr,value) (expr)
873#endif
874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else 877#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) 878 #define ecb_prefetch(addr,rw,locality)
655#endif 879#endif
656 880
657/* no emulation for ecb_decltype */ 881/* no emulation for ecb_decltype */
658#if ECB_GCC_VERSION(4,5) 882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
659 #define ecb_decltype(x) __decltype(x) 885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
660#elif ECB_GCC_VERSION(3,0) 886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
661 #define ecb_decltype(x) __typeof(x) 887 #define ecb_decltype(x) __typeof__ (x)
662#endif 888#endif
663 889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
664#define ecb_noinline ecb_attribute ((__noinline__)) 907 #define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__)) 908#endif
909
666#define ecb_unused ecb_attribute ((__unused__)) 910#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__)) 911#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__)) 912#define ecb_pure ecb_attribute ((__pure__))
913
914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
922#else
923 #define ecb_noreturn ecb_attribute ((__noreturn__))
924#endif
669 925
670#if ECB_GCC_VERSION(4,3) 926#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__)) 927 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__)) 928 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__)) 929 #define ecb_cold ecb_attribute ((__cold__))
… …
685/* for compatibility to the rest of the world */ 941/* for compatibility to the rest of the world */
686#define ecb_likely(expr) ecb_expect_true (expr) 942#define ecb_likely(expr) ecb_expect_true (expr)
687#define ecb_unlikely(expr) ecb_expect_false (expr) 943#define ecb_unlikely(expr) ecb_expect_false (expr)
688 944
689/* count trailing zero bits and count # of one bits */ 945/* count trailing zero bits and count # of one bits */
690#if ECB_GCC_VERSION(3,4) 946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
691 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
692 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
693 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
694 #define ecb_ctz32(x) __builtin_ctz (x) 953 #define ecb_ctz32(x) __builtin_ctz (x)
695 #define ecb_ctz64(x) __builtin_ctzll (x) 954 #define ecb_ctz64(x) __builtin_ctzll (x)
696 #define ecb_popcount32(x) __builtin_popcount (x) 955 #define ecb_popcount32(x) __builtin_popcount (x)
697 /* no popcountll */ 956 /* no popcountll */
698#else 957#else
699 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
700 ecb_function_ int 959 ecb_function_ ecb_const int
701 ecb_ctz32 (uint32_t x) 960 ecb_ctz32 (uint32_t x)
702 { 961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
703 int r = 0; 967 int r = 0;
704 968
705 x &= ~x + 1; /* this isolates the lowest bit */ 969 x &= ~x + 1; /* this isolates the lowest bit */
706 970
707#if ECB_branchless_on_i386 971#if ECB_branchless_on_i386
… …
717 if (x & 0xff00ff00) r += 8; 981 if (x & 0xff00ff00) r += 8;
718 if (x & 0xffff0000) r += 16; 982 if (x & 0xffff0000) r += 16;
719#endif 983#endif
720 984
721 return r; 985 return r;
986#endif
722 } 987 }
723 988
724 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
725 ecb_function_ int 990 ecb_function_ ecb_const int
726 ecb_ctz64 (uint64_t x) 991 ecb_ctz64 (uint64_t x)
727 { 992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
728 int shift = x & 0xffffffffU ? 0 : 32; 998 int shift = x & 0xffffffff ? 0 : 32;
729 return ecb_ctz32 (x >> shift) + shift; 999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
730 } 1001 }
731 1002
732 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
733 ecb_function_ int 1004 ecb_function_ ecb_const int
734 ecb_popcount32 (uint32_t x) 1005 ecb_popcount32 (uint32_t x)
735 { 1006 {
736 x -= (x >> 1) & 0x55555555; 1007 x -= (x >> 1) & 0x55555555;
737 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
738 x = ((x >> 4) + x) & 0x0f0f0f0f; 1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
739 x *= 0x01010101; 1010 x *= 0x01010101;
740 1011
741 return x >> 24; 1012 return x >> 24;
742 } 1013 }
743 1014
744 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
745 ecb_function_ int ecb_ld32 (uint32_t x) 1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
746 { 1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
747 int r = 0; 1023 int r = 0;
748 1024
749 if (x >> 16) { x >>= 16; r += 16; } 1025 if (x >> 16) { x >>= 16; r += 16; }
750 if (x >> 8) { x >>= 8; r += 8; } 1026 if (x >> 8) { x >>= 8; r += 8; }
751 if (x >> 4) { x >>= 4; r += 4; } 1027 if (x >> 4) { x >>= 4; r += 4; }
752 if (x >> 2) { x >>= 2; r += 2; } 1028 if (x >> 2) { x >>= 2; r += 2; }
753 if (x >> 1) { r += 1; } 1029 if (x >> 1) { r += 1; }
754 1030
755 return r; 1031 return r;
1032#endif
756 } 1033 }
757 1034
758 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
759 ecb_function_ int ecb_ld64 (uint64_t x) 1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
760 { 1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
761 int r = 0; 1043 int r = 0;
762 1044
763 if (x >> 32) { x >>= 32; r += 32; } 1045 if (x >> 32) { x >>= 32; r += 32; }
764 1046
765 return r + ecb_ld32 (x); 1047 return r + ecb_ld32 (x);
1048#endif
766 } 1049 }
767#endif 1050#endif
1051
1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1056
1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1059{
1060 return ( (x * 0x0802U & 0x22110U)
1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1062}
1063
1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1066{
1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1070 x = ( x >> 8 ) | ( x << 8);
1071
1072 return x;
1073}
1074
1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1077{
1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1082 x = ( x >> 16 ) | ( x << 16);
1083
1084 return x;
1085}
768 1086
769/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */ 1088/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
772ecb_function_ int 1090ecb_function_ ecb_const int
773ecb_popcount64 (uint64_t x) 1091ecb_popcount64 (uint64_t x)
774{ 1092{
775 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
776} 1094}
777 1095
778ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1096ecb_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; 1097ecb_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; 1098ecb_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; 1099ecb_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; 1100ecb_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; 1101ecb_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; 1102ecb_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; 1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
786 1104
787ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1105ecb_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); } 1106ecb_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); } 1107ecb_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); } 1108ecb_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); } 1109ecb_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); } 1110ecb_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); } 1111ecb_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); } 1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
795 1113
796#if ECB_GCC_VERSION(4,3) 1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
797 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
798 #define ecb_bswap32(x) __builtin_bswap32 (x) 1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
799 #define ecb_bswap64(x) __builtin_bswap64 (x) 1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
800#else 1127#else
801 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
802 ecb_function_ uint16_t 1129 ecb_function_ ecb_const uint16_t
803 ecb_bswap16 (uint16_t x) 1130 ecb_bswap16 (uint16_t x)
804 { 1131 {
805 return ecb_rotl16 (x, 8); 1132 return ecb_rotl16 (x, 8);
806 } 1133 }
807 1134
808 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
809 ecb_function_ uint32_t 1136 ecb_function_ ecb_const uint32_t
810 ecb_bswap32 (uint32_t x) 1137 ecb_bswap32 (uint32_t x)
811 { 1138 {
812 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
813 } 1140 }
814 1141
815 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
816 ecb_function_ uint64_t 1143 ecb_function_ ecb_const uint64_t
817 ecb_bswap64 (uint64_t x) 1144 ecb_bswap64 (uint64_t x)
818 { 1145 {
819 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
820 } 1147 }
821#endif 1148#endif
822 1149
823#if ECB_GCC_VERSION(4,5) 1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
824 #define ecb_unreachable() __builtin_unreachable () 1151 #define ecb_unreachable() __builtin_unreachable ()
825#else 1152#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
828 ecb_function_ void ecb_unreachable (void) { } 1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
829#endif 1156#endif
830 1157
831/* try to tell the compiler that some condition is definitely true */ 1158/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
833 1160
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
835ecb_function_ unsigned char 1162ecb_inline ecb_const uint32_t
836ecb_byteorder_helper (void) 1163ecb_byteorder_helper (void)
837{ 1164{
838 const uint32_t u = 0x11223344; 1165 /* the union code still generates code under pressure in gcc, */
839 return *(unsigned char *)&u; 1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
840} 1187}
841 1188
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
846 1193
847#if ECB_GCC_VERSION(3,0) || ECB_C99 1194#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else 1196#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1198#endif
1199
1200#if ECB_CPP
1201 template<typename T>
1202 static inline T ecb_div_rd (T val, T div)
1203 {
1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1205 }
1206 template<typename T>
1207 static inline T ecb_div_ru (T val, T div)
1208 {
1209 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1210 }
1211#else
1212 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1213 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
851#endif 1214#endif
852 1215
853#if ecb_cplusplus_does_not_suck 1216#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) */ 1217 /* 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> 1218 template<typename T, int N>
… …
859 } 1222 }
860#else 1223#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif 1225#endif
863 1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
864#endif 1532#endif
865 1533
866/* ECB.H END */ 1534/* ECB.H END */
867 1535
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1537/* if your architecture doesn't need memory fences, e.g. because it is
1538 * single-cpu/core, or if you use libev in a project that doesn't use libev
1539 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1540 * libev, in which cases the memory fences become nops.
1541 * alternatively, you can remove this #error and link against libpthread,
1542 * which will then provide the memory fences.
1543 */
1544# error "memory fences not defined for your architecture, please report"
1545#endif
1546
869# undef ECB_MEMORY_FENCE 1547#ifndef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE 1548# define ECB_MEMORY_FENCE do { } while (0)
871# undef ECB_MEMORY_FENCE_RELEASE 1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
872#endif 1551#endif
873 1552
874#define expect_false(cond) ecb_expect_false (cond) 1553#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond) 1554#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline 1555#define noinline ecb_noinline
… …
878#define inline_size ecb_inline 1557#define inline_size ecb_inline
879 1558
880#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
881# define inline_speed ecb_inline 1560# define inline_speed ecb_inline
882#else 1561#else
883# define inline_speed static noinline 1562# define inline_speed noinline static
884#endif 1563#endif
885 1564
886#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
887 1566
888#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
889# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
890#else 1569#else
891# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
892#endif 1571#endif
893 1572
894#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
895#define EMPTY2(a,b) /* used to suppress some warnings */
896 1574
897typedef ev_watcher *W; 1575typedef ev_watcher *W;
898typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
899typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
900 1578
… …
935#else 1613#else
936 1614
937#include <float.h> 1615#include <float.h>
938 1616
939/* a floor() replacement function, should be independent of ev_tstamp type */ 1617/* a floor() replacement function, should be independent of ev_tstamp type */
1618noinline
940static ev_tstamp noinline 1619static ev_tstamp
941ev_floor (ev_tstamp v) 1620ev_floor (ev_tstamp v)
942{ 1621{
943 /* the choice of shift factor is not terribly important */ 1622 /* the choice of shift factor is not terribly important */
944#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1623#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
945 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1624 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
977 1656
978#ifdef __linux 1657#ifdef __linux
979# include <sys/utsname.h> 1658# include <sys/utsname.h>
980#endif 1659#endif
981 1660
982static unsigned int noinline ecb_cold 1661noinline ecb_cold
1662static unsigned int
983ev_linux_version (void) 1663ev_linux_version (void)
984{ 1664{
985#ifdef __linux 1665#ifdef __linux
986 unsigned int v = 0; 1666 unsigned int v = 0;
987 struct utsname buf; 1667 struct utsname buf;
… …
1016} 1696}
1017 1697
1018/*****************************************************************************/ 1698/*****************************************************************************/
1019 1699
1020#if EV_AVOID_STDIO 1700#if EV_AVOID_STDIO
1021static void noinline ecb_cold 1701noinline ecb_cold
1702static void
1022ev_printerr (const char *msg) 1703ev_printerr (const char *msg)
1023{ 1704{
1024 write (STDERR_FILENO, msg, strlen (msg)); 1705 write (STDERR_FILENO, msg, strlen (msg));
1025} 1706}
1026#endif 1707#endif
1027 1708
1028static void (*syserr_cb)(const char *msg); 1709static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1029 1710
1030void ecb_cold 1711ecb_cold
1712void
1031ev_set_syserr_cb (void (*cb)(const char *msg)) 1713ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1032{ 1714{
1033 syserr_cb = cb; 1715 syserr_cb = cb;
1034} 1716}
1035 1717
1036static void noinline ecb_cold 1718noinline ecb_cold
1719static void
1037ev_syserr (const char *msg) 1720ev_syserr (const char *msg)
1038{ 1721{
1039 if (!msg) 1722 if (!msg)
1040 msg = "(libev) system error"; 1723 msg = "(libev) system error";
1041 1724
… …
1054 abort (); 1737 abort ();
1055 } 1738 }
1056} 1739}
1057 1740
1058static void * 1741static void *
1059ev_realloc_emul (void *ptr, long size) 1742ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1060{ 1743{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
1064 /* some systems, notably openbsd and darwin, fail to properly 1744 /* some systems, notably openbsd and darwin, fail to properly
1065 * implement realloc (x, 0) (as required by both ansi c-89 and 1745 * implement realloc (x, 0) (as required by both ansi c-89 and
1066 * the single unix specification, so work around them here. 1746 * the single unix specification, so work around them here.
1747 * recently, also (at least) fedora and debian started breaking it,
1748 * despite documenting it otherwise.
1067 */ 1749 */
1068 1750
1069 if (size) 1751 if (size)
1070 return realloc (ptr, size); 1752 return realloc (ptr, size);
1071 1753
1072 free (ptr); 1754 free (ptr);
1073 return 0; 1755 return 0;
1074#endif
1075} 1756}
1076 1757
1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1758static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1078 1759
1079void ecb_cold 1760ecb_cold
1761void
1080ev_set_allocator (void *(*cb)(void *ptr, long size)) 1762ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1081{ 1763{
1082 alloc = cb; 1764 alloc = cb;
1083} 1765}
1084 1766
1085inline_speed void * 1767inline_speed void *
… …
1112typedef struct 1794typedef struct
1113{ 1795{
1114 WL head; 1796 WL head;
1115 unsigned char events; /* the events watched for */ 1797 unsigned char events; /* the events watched for */
1116 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1798 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 */ 1799 unsigned char emask; /* some backends store the actual kernel mask in here */
1118 unsigned char unused; 1800 unsigned char unused;
1119#if EV_USE_EPOLL 1801#if EV_USE_EPOLL
1120 unsigned int egen; /* generation counter to counter epoll bugs */ 1802 unsigned int egen; /* generation counter to counter epoll bugs */
1121#endif 1803#endif
1122#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1804#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1173 #undef VAR 1855 #undef VAR
1174 }; 1856 };
1175 #include "ev_wrap.h" 1857 #include "ev_wrap.h"
1176 1858
1177 static struct ev_loop default_loop_struct; 1859 static struct ev_loop default_loop_struct;
1178 struct ev_loop *ev_default_loop_ptr; 1860 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1179 1861
1180#else 1862#else
1181 1863
1182 ev_tstamp ev_rt_now; 1864 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; 1865 #define VAR(name,decl) static decl;
1184 #include "ev_vars.h" 1866 #include "ev_vars.h"
1185 #undef VAR 1867 #undef VAR
1186 1868
1187 static int ev_default_loop_ptr; 1869 static int ev_default_loop_ptr;
… …
1202 1884
1203/*****************************************************************************/ 1885/*****************************************************************************/
1204 1886
1205#ifndef EV_HAVE_EV_TIME 1887#ifndef EV_HAVE_EV_TIME
1206ev_tstamp 1888ev_tstamp
1207ev_time (void) 1889ev_time (void) EV_NOEXCEPT
1208{ 1890{
1209#if EV_USE_REALTIME 1891#if EV_USE_REALTIME
1210 if (expect_true (have_realtime)) 1892 if (expect_true (have_realtime))
1211 { 1893 {
1212 struct timespec ts; 1894 struct timespec ts;
… …
1236 return ev_time (); 1918 return ev_time ();
1237} 1919}
1238 1920
1239#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1240ev_tstamp 1922ev_tstamp
1241ev_now (EV_P) 1923ev_now (EV_P) EV_NOEXCEPT
1242{ 1924{
1243 return ev_rt_now; 1925 return ev_rt_now;
1244} 1926}
1245#endif 1927#endif
1246 1928
1247void 1929void
1248ev_sleep (ev_tstamp delay) 1930ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1249{ 1931{
1250 if (delay > 0.) 1932 if (delay > 0.)
1251 { 1933 {
1252#if EV_USE_NANOSLEEP 1934#if EV_USE_NANOSLEEP
1253 struct timespec ts; 1935 struct timespec ts;
1254 1936
1255 EV_TS_SET (ts, delay); 1937 EV_TS_SET (ts, delay);
1256 nanosleep (&ts, 0); 1938 nanosleep (&ts, 0);
1257#elif defined(_WIN32) 1939#elif defined _WIN32
1940 /* maybe this should round up, as ms is very low resolution */
1941 /* compared to select (µs) or nanosleep (ns) */
1258 Sleep ((unsigned long)(delay * 1e3)); 1942 Sleep ((unsigned long)(delay * 1e3));
1259#else 1943#else
1260 struct timeval tv; 1944 struct timeval tv;
1261 1945
1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1946 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1281 1965
1282 do 1966 do
1283 ncur <<= 1; 1967 ncur <<= 1;
1284 while (cnt > ncur); 1968 while (cnt > ncur);
1285 1969
1286 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1970 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1287 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1971 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1288 { 1972 {
1289 ncur *= elem; 1973 ncur *= elem;
1290 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1974 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1291 ncur = ncur - sizeof (void *) * 4; 1975 ncur = ncur - sizeof (void *) * 4;
… …
1293 } 1977 }
1294 1978
1295 return ncur; 1979 return ncur;
1296} 1980}
1297 1981
1298static void * noinline ecb_cold 1982noinline ecb_cold
1983static void *
1299array_realloc (int elem, void *base, int *cur, int cnt) 1984array_realloc (int elem, void *base, int *cur, int cnt)
1300{ 1985{
1301 *cur = array_nextsize (elem, *cur, cnt); 1986 *cur = array_nextsize (elem, *cur, cnt);
1302 return ev_realloc (base, elem * *cur); 1987 return ev_realloc (base, elem * *cur);
1303} 1988}
1304 1989
1990#define array_needsize_noinit(base,count)
1991
1305#define array_init_zero(base,count) \ 1992#define array_needsize_zerofill(base,count) \
1306 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1993 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1307 1994
1308#define array_needsize(type,base,cur,cnt,init) \ 1995#define array_needsize(type,base,cur,cnt,init) \
1309 if (expect_false ((cnt) > (cur))) \ 1996 if (expect_false ((cnt) > (cur))) \
1310 { \ 1997 { \
1311 int ecb_unused ocur_ = (cur); \ 1998 ecb_unused int ocur_ = (cur); \
1312 (base) = (type *)array_realloc \ 1999 (base) = (type *)array_realloc \
1313 (sizeof (type), (base), &(cur), (cnt)); \ 2000 (sizeof (type), (base), &(cur), (cnt)); \
1314 init ((base) + (ocur_), (cur) - ocur_); \ 2001 init ((base) + (ocur_), (cur) - ocur_); \
1315 } 2002 }
1316 2003
… …
1328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2015 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1329 2016
1330/*****************************************************************************/ 2017/*****************************************************************************/
1331 2018
1332/* dummy callback for pending events */ 2019/* dummy callback for pending events */
1333static void noinline 2020noinline
2021static void
1334pendingcb (EV_P_ ev_prepare *w, int revents) 2022pendingcb (EV_P_ ev_prepare *w, int revents)
1335{ 2023{
1336} 2024}
1337 2025
1338void noinline 2026noinline
2027void
1339ev_feed_event (EV_P_ void *w, int revents) 2028ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1340{ 2029{
1341 W w_ = (W)w; 2030 W w_ = (W)w;
1342 int pri = ABSPRI (w_); 2031 int pri = ABSPRI (w_);
1343 2032
1344 if (expect_false (w_->pending)) 2033 if (expect_false (w_->pending))
1345 pendings [pri][w_->pending - 1].events |= revents; 2034 pendings [pri][w_->pending - 1].events |= revents;
1346 else 2035 else
1347 { 2036 {
1348 w_->pending = ++pendingcnt [pri]; 2037 w_->pending = ++pendingcnt [pri];
1349 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2038 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1350 pendings [pri][w_->pending - 1].w = w_; 2039 pendings [pri][w_->pending - 1].w = w_;
1351 pendings [pri][w_->pending - 1].events = revents; 2040 pendings [pri][w_->pending - 1].events = revents;
1352 } 2041 }
2042
2043 pendingpri = NUMPRI - 1;
1353} 2044}
1354 2045
1355inline_speed void 2046inline_speed void
1356feed_reverse (EV_P_ W w) 2047feed_reverse (EV_P_ W w)
1357{ 2048{
1358 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2049 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1359 rfeeds [rfeedcnt++] = w; 2050 rfeeds [rfeedcnt++] = w;
1360} 2051}
1361 2052
1362inline_size void 2053inline_size void
1363feed_reverse_done (EV_P_ int revents) 2054feed_reverse_done (EV_P_ int revents)
… …
1403 if (expect_true (!anfd->reify)) 2094 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents); 2095 fd_event_nocheck (EV_A_ fd, revents);
1405} 2096}
1406 2097
1407void 2098void
1408ev_feed_fd_event (EV_P_ int fd, int revents) 2099ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1409{ 2100{
1410 if (fd >= 0 && fd < anfdmax) 2101 if (fd >= 0 && fd < anfdmax)
1411 fd_event_nocheck (EV_A_ fd, revents); 2102 fd_event_nocheck (EV_A_ fd, revents);
1412} 2103}
1413 2104
… …
1471 2162
1472 fdchangecnt = 0; 2163 fdchangecnt = 0;
1473} 2164}
1474 2165
1475/* something about the given fd changed */ 2166/* something about the given fd changed */
1476inline_size void 2167inline_size
2168void
1477fd_change (EV_P_ int fd, int flags) 2169fd_change (EV_P_ int fd, int flags)
1478{ 2170{
1479 unsigned char reify = anfds [fd].reify; 2171 unsigned char reify = anfds [fd].reify;
1480 anfds [fd].reify |= flags; 2172 anfds [fd].reify |= flags;
1481 2173
1482 if (expect_true (!reify)) 2174 if (expect_true (!reify))
1483 { 2175 {
1484 ++fdchangecnt; 2176 ++fdchangecnt;
1485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2177 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1486 fdchanges [fdchangecnt - 1] = fd; 2178 fdchanges [fdchangecnt - 1] = fd;
1487 } 2179 }
1488} 2180}
1489 2181
1490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2182/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1491inline_speed void ecb_cold 2183inline_speed ecb_cold void
1492fd_kill (EV_P_ int fd) 2184fd_kill (EV_P_ int fd)
1493{ 2185{
1494 ev_io *w; 2186 ev_io *w;
1495 2187
1496 while ((w = (ev_io *)anfds [fd].head)) 2188 while ((w = (ev_io *)anfds [fd].head))
… …
1499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2191 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1500 } 2192 }
1501} 2193}
1502 2194
1503/* check whether the given fd is actually valid, for error recovery */ 2195/* check whether the given fd is actually valid, for error recovery */
1504inline_size int ecb_cold 2196inline_size ecb_cold int
1505fd_valid (int fd) 2197fd_valid (int fd)
1506{ 2198{
1507#ifdef _WIN32 2199#ifdef _WIN32
1508 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2200 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1509#else 2201#else
1510 return fcntl (fd, F_GETFD) != -1; 2202 return fcntl (fd, F_GETFD) != -1;
1511#endif 2203#endif
1512} 2204}
1513 2205
1514/* called on EBADF to verify fds */ 2206/* called on EBADF to verify fds */
1515static void noinline ecb_cold 2207noinline ecb_cold
2208static void
1516fd_ebadf (EV_P) 2209fd_ebadf (EV_P)
1517{ 2210{
1518 int fd; 2211 int fd;
1519 2212
1520 for (fd = 0; fd < anfdmax; ++fd) 2213 for (fd = 0; fd < anfdmax; ++fd)
… …
1522 if (!fd_valid (fd) && errno == EBADF) 2215 if (!fd_valid (fd) && errno == EBADF)
1523 fd_kill (EV_A_ fd); 2216 fd_kill (EV_A_ fd);
1524} 2217}
1525 2218
1526/* called on ENOMEM in select/poll to kill some fds and retry */ 2219/* called on ENOMEM in select/poll to kill some fds and retry */
1527static void noinline ecb_cold 2220noinline ecb_cold
2221static void
1528fd_enomem (EV_P) 2222fd_enomem (EV_P)
1529{ 2223{
1530 int fd; 2224 int fd;
1531 2225
1532 for (fd = anfdmax; fd--; ) 2226 for (fd = anfdmax; fd--; )
… …
1536 break; 2230 break;
1537 } 2231 }
1538} 2232}
1539 2233
1540/* usually called after fork if backend needs to re-arm all fds from scratch */ 2234/* usually called after fork if backend needs to re-arm all fds from scratch */
1541static void noinline 2235noinline
2236static void
1542fd_rearm_all (EV_P) 2237fd_rearm_all (EV_P)
1543{ 2238{
1544 int fd; 2239 int fd;
1545 2240
1546 for (fd = 0; fd < anfdmax; ++fd) 2241 for (fd = 0; fd < anfdmax; ++fd)
… …
1727 2422
1728/*****************************************************************************/ 2423/*****************************************************************************/
1729 2424
1730#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2425#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1731 2426
1732static void noinline ecb_cold 2427noinline ecb_cold
2428static void
1733evpipe_init (EV_P) 2429evpipe_init (EV_P)
1734{ 2430{
1735 if (!ev_is_active (&pipe_w)) 2431 if (!ev_is_active (&pipe_w))
1736 { 2432 {
2433 int fds [2];
2434
1737# if EV_USE_EVENTFD 2435# if EV_USE_EVENTFD
2436 fds [0] = -1;
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2437 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL) 2438 if (fds [1] < 0 && errno == EINVAL)
1740 evfd = eventfd (0, 0); 2439 fds [1] = eventfd (0, 0);
1741 2440
1742 if (evfd >= 0) 2441 if (fds [1] < 0)
2442# endif
1743 { 2443 {
2444 while (pipe (fds))
2445 ev_syserr ("(libev) error creating signal/async pipe");
2446
2447 fd_intern (fds [0]);
2448 }
2449
1744 evpipe [0] = -1; 2450 evpipe [0] = fds [0];
1745 fd_intern (evfd); /* doing it twice doesn't hurt */ 2451
1746 ev_io_set (&pipe_w, evfd, EV_READ); 2452 if (evpipe [1] < 0)
2453 evpipe [1] = fds [1]; /* first call, set write fd */
2454 else
2455 {
2456 /* on subsequent calls, do not change evpipe [1] */
2457 /* so that evpipe_write can always rely on its value. */
2458 /* this branch does not do anything sensible on windows, */
2459 /* so must not be executed on windows */
2460
2461 dup2 (fds [1], evpipe [1]);
2462 close (fds [1]);
2463 }
2464
2465 fd_intern (evpipe [1]);
2466
2467 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2468 ev_io_start (EV_A_ &pipe_w);
2469 ev_unref (EV_A); /* watcher should not keep loop alive */
2470 }
2471}
2472
2473inline_speed void
2474evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2475{
2476 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2477
2478 if (expect_true (*flag))
2479 return;
2480
2481 *flag = 1;
2482 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2483
2484 pipe_write_skipped = 1;
2485
2486 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2487
2488 if (pipe_write_wanted)
2489 {
2490 int old_errno;
2491
2492 pipe_write_skipped = 0;
2493 ECB_MEMORY_FENCE_RELEASE;
2494
2495 old_errno = errno; /* save errno because write will clobber it */
2496
2497#if EV_USE_EVENTFD
2498 if (evpipe [0] < 0)
2499 {
2500 uint64_t counter = 1;
2501 write (evpipe [1], &counter, sizeof (uint64_t));
1747 } 2502 }
1748 else 2503 else
1749# endif 2504#endif
1750 { 2505 {
1751 while (pipe (evpipe)) 2506#ifdef _WIN32
1752 ev_syserr ("(libev) error creating signal/async pipe"); 2507 WSABUF buf;
1753 2508 DWORD sent;
1754 fd_intern (evpipe [0]); 2509 buf.buf = (char *)&buf;
1755 fd_intern (evpipe [1]); 2510 buf.len = 1;
1756 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2511 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1757 } 2512#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); 2513 write (evpipe [1], &(evpipe [1]), 1);
2514#endif
1801 } 2515 }
1802 2516
1803 errno = old_errno; 2517 errno = old_errno;
1804 } 2518 }
1805} 2519}
… …
1812 int i; 2526 int i;
1813 2527
1814 if (revents & EV_READ) 2528 if (revents & EV_READ)
1815 { 2529 {
1816#if EV_USE_EVENTFD 2530#if EV_USE_EVENTFD
1817 if (evfd >= 0) 2531 if (evpipe [0] < 0)
1818 { 2532 {
1819 uint64_t counter; 2533 uint64_t counter;
1820 read (evfd, &counter, sizeof (uint64_t)); 2534 read (evpipe [1], &counter, sizeof (uint64_t));
1821 } 2535 }
1822 else 2536 else
1823#endif 2537#endif
1824 { 2538 {
1825 char dummy; 2539 char dummy[4];
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2540#ifdef _WIN32
2541 WSABUF buf;
2542 DWORD recvd;
2543 DWORD flags = 0;
2544 buf.buf = dummy;
2545 buf.len = sizeof (dummy);
2546 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2547#else
1827 read (evpipe [0], &dummy, 1); 2548 read (evpipe [0], &dummy, sizeof (dummy));
2549#endif
1828 } 2550 }
1829 } 2551 }
1830 2552
1831 pipe_write_skipped = 0; 2553 pipe_write_skipped = 0;
2554
2555 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1832 2556
1833#if EV_SIGNAL_ENABLE 2557#if EV_SIGNAL_ENABLE
1834 if (sig_pending) 2558 if (sig_pending)
1835 { 2559 {
1836 sig_pending = 0; 2560 sig_pending = 0;
2561
2562 ECB_MEMORY_FENCE;
1837 2563
1838 for (i = EV_NSIG - 1; i--; ) 2564 for (i = EV_NSIG - 1; i--; )
1839 if (expect_false (signals [i].pending)) 2565 if (expect_false (signals [i].pending))
1840 ev_feed_signal_event (EV_A_ i + 1); 2566 ev_feed_signal_event (EV_A_ i + 1);
1841 } 2567 }
… …
1843 2569
1844#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1845 if (async_pending) 2571 if (async_pending)
1846 { 2572 {
1847 async_pending = 0; 2573 async_pending = 0;
2574
2575 ECB_MEMORY_FENCE;
1848 2576
1849 for (i = asynccnt; i--; ) 2577 for (i = asynccnt; i--; )
1850 if (asyncs [i]->sent) 2578 if (asyncs [i]->sent)
1851 { 2579 {
1852 asyncs [i]->sent = 0; 2580 asyncs [i]->sent = 0;
2581 ECB_MEMORY_FENCE_RELEASE;
1853 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2582 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1854 } 2583 }
1855 } 2584 }
1856#endif 2585#endif
1857} 2586}
1858 2587
1859/*****************************************************************************/ 2588/*****************************************************************************/
1860 2589
1861void 2590void
1862ev_feed_signal (int signum) 2591ev_feed_signal (int signum) EV_NOEXCEPT
1863{ 2592{
1864#if EV_MULTIPLICITY 2593#if EV_MULTIPLICITY
2594 EV_P;
2595 ECB_MEMORY_FENCE_ACQUIRE;
1865 EV_P = signals [signum - 1].loop; 2596 EV_A = signals [signum - 1].loop;
1866 2597
1867 if (!EV_A) 2598 if (!EV_A)
1868 return; 2599 return;
1869#endif 2600#endif
1870 2601
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1; 2602 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending); 2603 evpipe_write (EV_A_ &sig_pending);
1876} 2604}
1877 2605
1878static void 2606static void
… …
1883#endif 2611#endif
1884 2612
1885 ev_feed_signal (signum); 2613 ev_feed_signal (signum);
1886} 2614}
1887 2615
1888void noinline 2616noinline
2617void
1889ev_feed_signal_event (EV_P_ int signum) 2618ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1890{ 2619{
1891 WL w; 2620 WL w;
1892 2621
1893 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2622 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1894 return; 2623 return;
1895 2624
1896 --signum; 2625 --signum;
1897 2626
1898#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
… …
1902 if (expect_false (signals [signum].loop != EV_A)) 2631 if (expect_false (signals [signum].loop != EV_A))
1903 return; 2632 return;
1904#endif 2633#endif
1905 2634
1906 signals [signum].pending = 0; 2635 signals [signum].pending = 0;
2636 ECB_MEMORY_FENCE_RELEASE;
1907 2637
1908 for (w = signals [signum].head; w; w = w->next) 2638 for (w = signals [signum].head; w; w = w->next)
1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2639 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1910} 2640}
1911 2641
… …
1999# include "ev_port.c" 2729# include "ev_port.c"
2000#endif 2730#endif
2001#if EV_USE_KQUEUE 2731#if EV_USE_KQUEUE
2002# include "ev_kqueue.c" 2732# include "ev_kqueue.c"
2003#endif 2733#endif
2734#if EV_USE_LINUXAIO
2735# include "ev_linuxaio.c"
2736#endif
2004#if EV_USE_EPOLL 2737#if EV_USE_EPOLL
2005# include "ev_epoll.c" 2738# include "ev_epoll.c"
2006#endif 2739#endif
2007#if EV_USE_POLL 2740#if EV_USE_POLL
2008# include "ev_poll.c" 2741# include "ev_poll.c"
2009#endif 2742#endif
2010#if EV_USE_SELECT 2743#if EV_USE_SELECT
2011# include "ev_select.c" 2744# include "ev_select.c"
2012#endif 2745#endif
2013 2746
2014int ecb_cold 2747ecb_cold int
2015ev_version_major (void) 2748ev_version_major (void) EV_NOEXCEPT
2016{ 2749{
2017 return EV_VERSION_MAJOR; 2750 return EV_VERSION_MAJOR;
2018} 2751}
2019 2752
2020int ecb_cold 2753ecb_cold int
2021ev_version_minor (void) 2754ev_version_minor (void) EV_NOEXCEPT
2022{ 2755{
2023 return EV_VERSION_MINOR; 2756 return EV_VERSION_MINOR;
2024} 2757}
2025 2758
2026/* return true if we are running with elevated privileges and should ignore env variables */ 2759/* return true if we are running with elevated privileges and should ignore env variables */
2027int inline_size ecb_cold 2760inline_size ecb_cold int
2028enable_secure (void) 2761enable_secure (void)
2029{ 2762{
2030#ifdef _WIN32 2763#ifdef _WIN32
2031 return 0; 2764 return 0;
2032#else 2765#else
2033 return getuid () != geteuid () 2766 return getuid () != geteuid ()
2034 || getgid () != getegid (); 2767 || getgid () != getegid ();
2035#endif 2768#endif
2036} 2769}
2037 2770
2038unsigned int ecb_cold 2771ecb_cold
2772unsigned int
2039ev_supported_backends (void) 2773ev_supported_backends (void) EV_NOEXCEPT
2040{ 2774{
2041 unsigned int flags = 0; 2775 unsigned int flags = 0;
2042 2776
2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2777 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2044 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2778 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2045 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2779 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2780 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2046 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2781 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2047 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2782 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2048 2783
2049 return flags; 2784 return flags;
2050} 2785}
2051 2786
2052unsigned int ecb_cold 2787ecb_cold
2788unsigned int
2053ev_recommended_backends (void) 2789ev_recommended_backends (void) EV_NOEXCEPT
2054{ 2790{
2055 unsigned int flags = ev_supported_backends (); 2791 unsigned int flags = ev_supported_backends ();
2056 2792
2057#ifndef __NetBSD__ 2793#ifndef __NetBSD__
2058 /* kqueue is borked on everything but netbsd apparently */ 2794 /* kqueue is borked on everything but netbsd apparently */
… …
2066#endif 2802#endif
2067#ifdef __FreeBSD__ 2803#ifdef __FreeBSD__
2068 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2804 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2069#endif 2805#endif
2070 2806
2807 /* TODO: linuxaio is very experimental */
2808 flags &= ~EVBACKEND_LINUXAIO;
2809
2071 return flags; 2810 return flags;
2072} 2811}
2073 2812
2074unsigned int ecb_cold 2813ecb_cold
2814unsigned int
2075ev_embeddable_backends (void) 2815ev_embeddable_backends (void) EV_NOEXCEPT
2076{ 2816{
2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2817 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2078 2818
2079 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2819 /* 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 */ 2820 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2082 2822
2083 return flags; 2823 return flags;
2084} 2824}
2085 2825
2086unsigned int 2826unsigned int
2087ev_backend (EV_P) 2827ev_backend (EV_P) EV_NOEXCEPT
2088{ 2828{
2089 return backend; 2829 return backend;
2090} 2830}
2091 2831
2092#if EV_FEATURE_API 2832#if EV_FEATURE_API
2093unsigned int 2833unsigned int
2094ev_iteration (EV_P) 2834ev_iteration (EV_P) EV_NOEXCEPT
2095{ 2835{
2096 return loop_count; 2836 return loop_count;
2097} 2837}
2098 2838
2099unsigned int 2839unsigned int
2100ev_depth (EV_P) 2840ev_depth (EV_P) EV_NOEXCEPT
2101{ 2841{
2102 return loop_depth; 2842 return loop_depth;
2103} 2843}
2104 2844
2105void 2845void
2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2846ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2107{ 2847{
2108 io_blocktime = interval; 2848 io_blocktime = interval;
2109} 2849}
2110 2850
2111void 2851void
2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 2853{
2114 timeout_blocktime = interval; 2854 timeout_blocktime = interval;
2115} 2855}
2116 2856
2117void 2857void
2118ev_set_userdata (EV_P_ void *data) 2858ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2119{ 2859{
2120 userdata = data; 2860 userdata = data;
2121} 2861}
2122 2862
2123void * 2863void *
2124ev_userdata (EV_P) 2864ev_userdata (EV_P) EV_NOEXCEPT
2125{ 2865{
2126 return userdata; 2866 return userdata;
2127} 2867}
2128 2868
2129void 2869void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2870ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2131{ 2871{
2132 invoke_cb = invoke_pending_cb; 2872 invoke_cb = invoke_pending_cb;
2133} 2873}
2134 2874
2135void 2875void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2876ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2137{ 2877{
2138 release_cb = release; 2878 release_cb = release;
2139 acquire_cb = acquire; 2879 acquire_cb = acquire;
2140} 2880}
2141#endif 2881#endif
2142 2882
2143/* initialise a loop structure, must be zero-initialised */ 2883/* initialise a loop structure, must be zero-initialised */
2144static void noinline ecb_cold 2884noinline ecb_cold
2885static void
2145loop_init (EV_P_ unsigned int flags) 2886loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2146{ 2887{
2147 if (!backend) 2888 if (!backend)
2148 { 2889 {
2149 origflags = flags; 2890 origflags = flags;
2150 2891
… …
2195#if EV_ASYNC_ENABLE 2936#if EV_ASYNC_ENABLE
2196 async_pending = 0; 2937 async_pending = 0;
2197#endif 2938#endif
2198 pipe_write_skipped = 0; 2939 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0; 2940 pipe_write_wanted = 0;
2941 evpipe [0] = -1;
2942 evpipe [1] = -1;
2200#if EV_USE_INOTIFY 2943#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2944 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif 2945#endif
2203#if EV_USE_SIGNALFD 2946#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2947 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2206 2949
2207 if (!(flags & EVBACKEND_MASK)) 2950 if (!(flags & EVBACKEND_MASK))
2208 flags |= ev_recommended_backends (); 2951 flags |= ev_recommended_backends ();
2209 2952
2210#if EV_USE_IOCP 2953#if EV_USE_IOCP
2211 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2954 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2212#endif 2955#endif
2213#if EV_USE_PORT 2956#if EV_USE_PORT
2214 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2957 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2215#endif 2958#endif
2216#if EV_USE_KQUEUE 2959#if EV_USE_KQUEUE
2217 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2961#endif
2962#if EV_USE_LINUXAIO
2963 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2218#endif 2964#endif
2219#if EV_USE_EPOLL 2965#if EV_USE_EPOLL
2220 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2221#endif 2967#endif
2222#if EV_USE_POLL 2968#if EV_USE_POLL
2223 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2224#endif 2970#endif
2225#if EV_USE_SELECT 2971#if EV_USE_SELECT
2226 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2227#endif 2973#endif
2228 2974
2229 ev_prepare_init (&pending_w, pendingcb); 2975 ev_prepare_init (&pending_w, pendingcb);
2230 2976
2231#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2977#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2234#endif 2980#endif
2235 } 2981 }
2236} 2982}
2237 2983
2238/* free up a loop structure */ 2984/* free up a loop structure */
2239void ecb_cold 2985ecb_cold
2986void
2240ev_loop_destroy (EV_P) 2987ev_loop_destroy (EV_P)
2241{ 2988{
2242 int i; 2989 int i;
2243 2990
2244#if EV_MULTIPLICITY 2991#if EV_MULTIPLICITY
… …
2255 EV_INVOKE_PENDING; 3002 EV_INVOKE_PENDING;
2256 } 3003 }
2257#endif 3004#endif
2258 3005
2259#if EV_CHILD_ENABLE 3006#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev)) 3007 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2261 { 3008 {
2262 ev_ref (EV_A); /* child watcher */ 3009 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev); 3010 ev_signal_stop (EV_A_ &childev);
2264 } 3011 }
2265#endif 3012#endif
… …
2267 if (ev_is_active (&pipe_w)) 3014 if (ev_is_active (&pipe_w))
2268 { 3015 {
2269 /*ev_ref (EV_A);*/ 3016 /*ev_ref (EV_A);*/
2270 /*ev_io_stop (EV_A_ &pipe_w);*/ 3017 /*ev_io_stop (EV_A_ &pipe_w);*/
2271 3018
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]); 3019 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2280 EV_WIN32_CLOSE_FD (evpipe [1]); 3020 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2281 }
2282 } 3021 }
2283 3022
2284#if EV_USE_SIGNALFD 3023#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w)) 3024 if (ev_is_active (&sigfd_w))
2286 close (sigfd); 3025 close (sigfd);
… …
2293 3032
2294 if (backend_fd >= 0) 3033 if (backend_fd >= 0)
2295 close (backend_fd); 3034 close (backend_fd);
2296 3035
2297#if EV_USE_IOCP 3036#if EV_USE_IOCP
2298 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3037 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2299#endif 3038#endif
2300#if EV_USE_PORT 3039#if EV_USE_PORT
2301 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3040 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2302#endif 3041#endif
2303#if EV_USE_KQUEUE 3042#if EV_USE_KQUEUE
2304 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3043 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3044#endif
3045#if EV_USE_LINUXAIO
3046 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2305#endif 3047#endif
2306#if EV_USE_EPOLL 3048#if EV_USE_EPOLL
2307 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3049 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2308#endif 3050#endif
2309#if EV_USE_POLL 3051#if EV_USE_POLL
2310 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3052 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2311#endif 3053#endif
2312#if EV_USE_SELECT 3054#if EV_USE_SELECT
2313 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3055 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2314#endif 3056#endif
2315 3057
2316 for (i = NUMPRI; i--; ) 3058 for (i = NUMPRI; i--; )
2317 { 3059 {
2318 array_free (pending, [i]); 3060 array_free (pending, [i]);
… …
2360 3102
2361inline_size void 3103inline_size void
2362loop_fork (EV_P) 3104loop_fork (EV_P)
2363{ 3105{
2364#if EV_USE_PORT 3106#if EV_USE_PORT
2365 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3107 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2366#endif 3108#endif
2367#if EV_USE_KQUEUE 3109#if EV_USE_KQUEUE
2368 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3110 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3111#endif
3112#if EV_USE_LINUXAIO
3113 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2369#endif 3114#endif
2370#if EV_USE_EPOLL 3115#if EV_USE_EPOLL
2371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3116 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2372#endif 3117#endif
2373#if EV_USE_INOTIFY 3118#if EV_USE_INOTIFY
2374 infy_fork (EV_A); 3119 infy_fork (EV_A);
2375#endif 3120#endif
2376 3121
3122#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2377 if (ev_is_active (&pipe_w)) 3123 if (ev_is_active (&pipe_w) && postfork != 2)
2378 { 3124 {
2379 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3125 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2380 3126
2381 ev_ref (EV_A); 3127 ev_ref (EV_A);
2382 ev_io_stop (EV_A_ &pipe_w); 3128 ev_io_stop (EV_A_ &pipe_w);
2383 3129
2384#if EV_USE_EVENTFD
2385 if (evfd >= 0)
2386 close (evfd);
2387#endif
2388
2389 if (evpipe [0] >= 0) 3130 if (evpipe [0] >= 0)
2390 {
2391 EV_WIN32_CLOSE_FD (evpipe [0]); 3131 EV_WIN32_CLOSE_FD (evpipe [0]);
2392 EV_WIN32_CLOSE_FD (evpipe [1]);
2393 }
2394 3132
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2396 evpipe_init (EV_A); 3133 evpipe_init (EV_A);
2397 /* now iterate over everything, in case we missed something */ 3134 /* iterate over everything, in case we missed something before */
2398 pipecb (EV_A_ &pipe_w, EV_READ); 3135 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399#endif
2400 } 3136 }
3137#endif
2401 3138
2402 postfork = 0; 3139 postfork = 0;
2403} 3140}
2404 3141
2405#if EV_MULTIPLICITY 3142#if EV_MULTIPLICITY
2406 3143
3144ecb_cold
2407struct ev_loop * ecb_cold 3145struct ev_loop *
2408ev_loop_new (unsigned int flags) 3146ev_loop_new (unsigned int flags) EV_NOEXCEPT
2409{ 3147{
2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3148 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2411 3149
2412 memset (EV_A, 0, sizeof (struct ev_loop)); 3150 memset (EV_A, 0, sizeof (struct ev_loop));
2413 loop_init (EV_A_ flags); 3151 loop_init (EV_A_ flags);
… …
2420} 3158}
2421 3159
2422#endif /* multiplicity */ 3160#endif /* multiplicity */
2423 3161
2424#if EV_VERIFY 3162#if EV_VERIFY
2425static void noinline ecb_cold 3163noinline ecb_cold
3164static void
2426verify_watcher (EV_P_ W w) 3165verify_watcher (EV_P_ W w)
2427{ 3166{
2428 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3167 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2429 3168
2430 if (w->pending) 3169 if (w->pending)
2431 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3170 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2432} 3171}
2433 3172
2434static void noinline ecb_cold 3173noinline ecb_cold
3174static void
2435verify_heap (EV_P_ ANHE *heap, int N) 3175verify_heap (EV_P_ ANHE *heap, int N)
2436{ 3176{
2437 int i; 3177 int i;
2438 3178
2439 for (i = HEAP0; i < N + HEAP0; ++i) 3179 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2444 3184
2445 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3185 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2446 } 3186 }
2447} 3187}
2448 3188
2449static void noinline ecb_cold 3189noinline ecb_cold
3190static void
2450array_verify (EV_P_ W *ws, int cnt) 3191array_verify (EV_P_ W *ws, int cnt)
2451{ 3192{
2452 while (cnt--) 3193 while (cnt--)
2453 { 3194 {
2454 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3195 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2457} 3198}
2458#endif 3199#endif
2459 3200
2460#if EV_FEATURE_API 3201#if EV_FEATURE_API
2461void ecb_cold 3202void ecb_cold
2462ev_verify (EV_P) 3203ev_verify (EV_P) EV_NOEXCEPT
2463{ 3204{
2464#if EV_VERIFY 3205#if EV_VERIFY
2465 int i; 3206 int i;
2466 WL w; 3207 WL w, w2;
2467 3208
2468 assert (activecnt >= -1); 3209 assert (activecnt >= -1);
2469 3210
2470 assert (fdchangemax >= fdchangecnt); 3211 assert (fdchangemax >= fdchangecnt);
2471 for (i = 0; i < fdchangecnt; ++i) 3212 for (i = 0; i < fdchangecnt; ++i)
2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3213 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2473 3214
2474 assert (anfdmax >= 0); 3215 assert (anfdmax >= 0);
2475 for (i = 0; i < anfdmax; ++i) 3216 for (i = 0; i < anfdmax; ++i)
3217 {
3218 int j = 0;
3219
2476 for (w = anfds [i].head; w; w = w->next) 3220 for (w = w2 = anfds [i].head; w; w = w->next)
2477 { 3221 {
2478 verify_watcher (EV_A_ (W)w); 3222 verify_watcher (EV_A_ (W)w);
3223
3224 if (j++ & 1)
3225 {
3226 assert (("libev: io watcher list contains a loop", w != w2));
3227 w2 = w2->next;
3228 }
3229
2479 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3230 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)); 3231 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2481 } 3232 }
3233 }
2482 3234
2483 assert (timermax >= timercnt); 3235 assert (timermax >= timercnt);
2484 verify_heap (EV_A_ timers, timercnt); 3236 verify_heap (EV_A_ timers, timercnt);
2485 3237
2486#if EV_PERIODIC_ENABLE 3238#if EV_PERIODIC_ENABLE
… …
2532#endif 3284#endif
2533} 3285}
2534#endif 3286#endif
2535 3287
2536#if EV_MULTIPLICITY 3288#if EV_MULTIPLICITY
3289ecb_cold
2537struct ev_loop * ecb_cold 3290struct ev_loop *
2538#else 3291#else
2539int 3292int
2540#endif 3293#endif
2541ev_default_loop (unsigned int flags) 3294ev_default_loop (unsigned int flags) EV_NOEXCEPT
2542{ 3295{
2543 if (!ev_default_loop_ptr) 3296 if (!ev_default_loop_ptr)
2544 { 3297 {
2545#if EV_MULTIPLICITY 3298#if EV_MULTIPLICITY
2546 EV_P = ev_default_loop_ptr = &default_loop_struct; 3299 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2565 3318
2566 return ev_default_loop_ptr; 3319 return ev_default_loop_ptr;
2567} 3320}
2568 3321
2569void 3322void
2570ev_loop_fork (EV_P) 3323ev_loop_fork (EV_P) EV_NOEXCEPT
2571{ 3324{
2572 postfork = 1; /* must be in line with ev_default_fork */ 3325 postfork = 1;
2573} 3326}
2574 3327
2575/*****************************************************************************/ 3328/*****************************************************************************/
2576 3329
2577void 3330void
… …
2579{ 3332{
2580 EV_CB_INVOKE ((W)w, revents); 3333 EV_CB_INVOKE ((W)w, revents);
2581} 3334}
2582 3335
2583unsigned int 3336unsigned int
2584ev_pending_count (EV_P) 3337ev_pending_count (EV_P) EV_NOEXCEPT
2585{ 3338{
2586 int pri; 3339 int pri;
2587 unsigned int count = 0; 3340 unsigned int count = 0;
2588 3341
2589 for (pri = NUMPRI; pri--; ) 3342 for (pri = NUMPRI; pri--; )
2590 count += pendingcnt [pri]; 3343 count += pendingcnt [pri];
2591 3344
2592 return count; 3345 return count;
2593} 3346}
2594 3347
2595void noinline 3348noinline
3349void
2596ev_invoke_pending (EV_P) 3350ev_invoke_pending (EV_P)
2597{ 3351{
2598 int pri; 3352 pendingpri = NUMPRI;
2599 3353
2600 for (pri = NUMPRI; pri--; ) 3354 do
3355 {
3356 --pendingpri;
3357
3358 /* pendingpri possibly gets modified in the inner loop */
2601 while (pendingcnt [pri]) 3359 while (pendingcnt [pendingpri])
2602 { 3360 {
2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3361 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2604 3362
2605 p->w->pending = 0; 3363 p->w->pending = 0;
2606 EV_CB_INVOKE (p->w, p->events); 3364 EV_CB_INVOKE (p->w, p->events);
2607 EV_FREQUENT_CHECK; 3365 EV_FREQUENT_CHECK;
2608 } 3366 }
3367 }
3368 while (pendingpri);
2609} 3369}
2610 3370
2611#if EV_IDLE_ENABLE 3371#if EV_IDLE_ENABLE
2612/* make idle watchers pending. this handles the "call-idle */ 3372/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */ 3373/* only when higher priorities are idle" logic */
… …
2671 } 3431 }
2672} 3432}
2673 3433
2674#if EV_PERIODIC_ENABLE 3434#if EV_PERIODIC_ENABLE
2675 3435
2676static void noinline 3436noinline
3437static void
2677periodic_recalc (EV_P_ ev_periodic *w) 3438periodic_recalc (EV_P_ ev_periodic *w)
2678{ 3439{
2679 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3440 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); 3441 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2681 3442
… …
2703{ 3464{
2704 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
2705 3466
2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3467 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2707 { 3468 {
2708 int feed_count = 0;
2709
2710 do 3469 do
2711 { 3470 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3471 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713 3472
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3473 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2741 } 3500 }
2742} 3501}
2743 3502
2744/* simply recalculate all periodics */ 3503/* simply recalculate all periodics */
2745/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3504/* TODO: maybe ensure that at least one event happens when jumping forward? */
2746static void noinline ecb_cold 3505noinline ecb_cold
3506static void
2747periodics_reschedule (EV_P) 3507periodics_reschedule (EV_P)
2748{ 3508{
2749 int i; 3509 int i;
2750 3510
2751 /* adjust periodics after time jump */ 3511 /* adjust periodics after time jump */
… …
2764 reheap (periodics, periodiccnt); 3524 reheap (periodics, periodiccnt);
2765} 3525}
2766#endif 3526#endif
2767 3527
2768/* adjust all timers by a given offset */ 3528/* adjust all timers by a given offset */
2769static void noinline ecb_cold 3529noinline ecb_cold
3530static void
2770timers_reschedule (EV_P_ ev_tstamp adjust) 3531timers_reschedule (EV_P_ ev_tstamp adjust)
2771{ 3532{
2772 int i; 3533 int i;
2773 3534
2774 for (i = 0; i < timercnt; ++i) 3535 for (i = 0; i < timercnt; ++i)
… …
2848 3609
2849 mn_now = ev_rt_now; 3610 mn_now = ev_rt_now;
2850 } 3611 }
2851} 3612}
2852 3613
2853void 3614int
2854ev_run (EV_P_ int flags) 3615ev_run (EV_P_ int flags)
2855{ 3616{
2856#if EV_FEATURE_API 3617#if EV_FEATURE_API
2857 ++loop_depth; 3618 ++loop_depth;
2858#endif 3619#endif
… …
2971#endif 3732#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3733 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2973 backend_poll (EV_A_ waittime); 3734 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3735 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975 3736
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3737 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2977 3738
3739 ECB_MEMORY_FENCE_ACQUIRE;
2978 if (pipe_write_skipped) 3740 if (pipe_write_skipped)
2979 { 3741 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3742 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); 3743 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 } 3744 }
… …
3015 loop_done = EVBREAK_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
3016 3778
3017#if EV_FEATURE_API 3779#if EV_FEATURE_API
3018 --loop_depth; 3780 --loop_depth;
3019#endif 3781#endif
3020}
3021 3782
3783 return activecnt;
3784}
3785
3022void 3786void
3023ev_break (EV_P_ int how) 3787ev_break (EV_P_ int how) EV_NOEXCEPT
3024{ 3788{
3025 loop_done = how; 3789 loop_done = how;
3026} 3790}
3027 3791
3028void 3792void
3029ev_ref (EV_P) 3793ev_ref (EV_P) EV_NOEXCEPT
3030{ 3794{
3031 ++activecnt; 3795 ++activecnt;
3032} 3796}
3033 3797
3034void 3798void
3035ev_unref (EV_P) 3799ev_unref (EV_P) EV_NOEXCEPT
3036{ 3800{
3037 --activecnt; 3801 --activecnt;
3038} 3802}
3039 3803
3040void 3804void
3041ev_now_update (EV_P) 3805ev_now_update (EV_P) EV_NOEXCEPT
3042{ 3806{
3043 time_update (EV_A_ 1e100); 3807 time_update (EV_A_ 1e100);
3044} 3808}
3045 3809
3046void 3810void
3047ev_suspend (EV_P) 3811ev_suspend (EV_P) EV_NOEXCEPT
3048{ 3812{
3049 ev_now_update (EV_A); 3813 ev_now_update (EV_A);
3050} 3814}
3051 3815
3052void 3816void
3053ev_resume (EV_P) 3817ev_resume (EV_P) EV_NOEXCEPT
3054{ 3818{
3055 ev_tstamp mn_prev = mn_now; 3819 ev_tstamp mn_prev = mn_now;
3056 3820
3057 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev); 3822 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097 w->pending = 0; 3861 w->pending = 0;
3098 } 3862 }
3099} 3863}
3100 3864
3101int 3865int
3102ev_clear_pending (EV_P_ void *w) 3866ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3103{ 3867{
3104 W w_ = (W)w; 3868 W w_ = (W)w;
3105 int pending = w_->pending; 3869 int pending = w_->pending;
3106 3870
3107 if (expect_true (pending)) 3871 if (expect_true (pending))
… …
3139 w->active = 0; 3903 w->active = 0;
3140} 3904}
3141 3905
3142/*****************************************************************************/ 3906/*****************************************************************************/
3143 3907
3144void noinline 3908noinline
3909void
3145ev_io_start (EV_P_ ev_io *w) 3910ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 3911{
3147 int fd = w->fd; 3912 int fd = w->fd;
3148 3913
3149 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3150 return; 3915 return;
… …
3153 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3918 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3154 3919
3155 EV_FREQUENT_CHECK; 3920 EV_FREQUENT_CHECK;
3156 3921
3157 ev_start (EV_A_ (W)w, 1); 3922 ev_start (EV_A_ (W)w, 1);
3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3923 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3159 wlist_add (&anfds[fd].head, (WL)w); 3924 wlist_add (&anfds[fd].head, (WL)w);
3925
3926 /* common bug, apparently */
3927 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3160 3928
3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3929 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3162 w->events &= ~EV__IOFDSET; 3930 w->events &= ~EV__IOFDSET;
3163 3931
3164 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3165} 3933}
3166 3934
3167void noinline 3935noinline
3936void
3168ev_io_stop (EV_P_ ev_io *w) 3937ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3169{ 3938{
3170 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3171 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3172 return; 3941 return;
3173 3942
… …
3181 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3950 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3182 3951
3183 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3184} 3953}
3185 3954
3186void noinline 3955noinline
3956void
3187ev_timer_start (EV_P_ ev_timer *w) 3957ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3188{ 3958{
3189 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3190 return; 3960 return;
3191 3961
3192 ev_at (w) += mn_now; 3962 ev_at (w) += mn_now;
… …
3195 3965
3196 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3197 3967
3198 ++timercnt; 3968 ++timercnt;
3199 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3969 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3200 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3970 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3201 ANHE_w (timers [ev_active (w)]) = (WT)w; 3971 ANHE_w (timers [ev_active (w)]) = (WT)w;
3202 ANHE_at_cache (timers [ev_active (w)]); 3972 ANHE_at_cache (timers [ev_active (w)]);
3203 upheap (timers, ev_active (w)); 3973 upheap (timers, ev_active (w));
3204 3974
3205 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
3206 3976
3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3977 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3208} 3978}
3209 3979
3210void noinline 3980noinline
3981void
3211ev_timer_stop (EV_P_ ev_timer *w) 3982ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3212{ 3983{
3213 clear_pending (EV_A_ (W)w); 3984 clear_pending (EV_A_ (W)w);
3214 if (expect_false (!ev_is_active (w))) 3985 if (expect_false (!ev_is_active (w)))
3215 return; 3986 return;
3216 3987
… …
3235 ev_stop (EV_A_ (W)w); 4006 ev_stop (EV_A_ (W)w);
3236 4007
3237 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
3238} 4009}
3239 4010
3240void noinline 4011noinline
4012void
3241ev_timer_again (EV_P_ ev_timer *w) 4013ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3242{ 4014{
3243 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
4016
4017 clear_pending (EV_A_ (W)w);
3244 4018
3245 if (ev_is_active (w)) 4019 if (ev_is_active (w))
3246 { 4020 {
3247 if (w->repeat) 4021 if (w->repeat)
3248 { 4022 {
… …
3261 4035
3262 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
3263} 4037}
3264 4038
3265ev_tstamp 4039ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w) 4040ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3267{ 4041{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4042 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269} 4043}
3270 4044
3271#if EV_PERIODIC_ENABLE 4045#if EV_PERIODIC_ENABLE
3272void noinline 4046noinline
4047void
3273ev_periodic_start (EV_P_ ev_periodic *w) 4048ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3274{ 4049{
3275 if (expect_false (ev_is_active (w))) 4050 if (expect_false (ev_is_active (w)))
3276 return; 4051 return;
3277 4052
3278 if (w->reschedule_cb) 4053 if (w->reschedule_cb)
… …
3287 4062
3288 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3289 4064
3290 ++periodiccnt; 4065 ++periodiccnt;
3291 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4066 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3292 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4067 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3293 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4068 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3294 ANHE_at_cache (periodics [ev_active (w)]); 4069 ANHE_at_cache (periodics [ev_active (w)]);
3295 upheap (periodics, ev_active (w)); 4070 upheap (periodics, ev_active (w));
3296 4071
3297 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
3298 4073
3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4074 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3300} 4075}
3301 4076
3302void noinline 4077noinline
4078void
3303ev_periodic_stop (EV_P_ ev_periodic *w) 4079ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3304{ 4080{
3305 clear_pending (EV_A_ (W)w); 4081 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 4082 if (expect_false (!ev_is_active (w)))
3307 return; 4083 return;
3308 4084
… …
3325 ev_stop (EV_A_ (W)w); 4101 ev_stop (EV_A_ (W)w);
3326 4102
3327 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3328} 4104}
3329 4105
3330void noinline 4106noinline
4107void
3331ev_periodic_again (EV_P_ ev_periodic *w) 4108ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3332{ 4109{
3333 /* TODO: use adjustheap and recalculation */ 4110 /* TODO: use adjustheap and recalculation */
3334 ev_periodic_stop (EV_A_ w); 4111 ev_periodic_stop (EV_A_ w);
3335 ev_periodic_start (EV_A_ w); 4112 ev_periodic_start (EV_A_ w);
3336} 4113}
… …
3340# define SA_RESTART 0 4117# define SA_RESTART 0
3341#endif 4118#endif
3342 4119
3343#if EV_SIGNAL_ENABLE 4120#if EV_SIGNAL_ENABLE
3344 4121
3345void noinline 4122noinline
4123void
3346ev_signal_start (EV_P_ ev_signal *w) 4124ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3347{ 4125{
3348 if (expect_false (ev_is_active (w))) 4126 if (expect_false (ev_is_active (w)))
3349 return; 4127 return;
3350 4128
3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4129 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3353#if EV_MULTIPLICITY 4131#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops", 4132 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4133 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3356 4134
3357 signals [w->signum - 1].loop = EV_A; 4135 signals [w->signum - 1].loop = EV_A;
4136 ECB_MEMORY_FENCE_RELEASE;
3358#endif 4137#endif
3359 4138
3360 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3361 4140
3362#if EV_USE_SIGNALFD 4141#if EV_USE_SIGNALFD
… …
3421 } 4200 }
3422 4201
3423 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3424} 4203}
3425 4204
3426void noinline 4205noinline
4206void
3427ev_signal_stop (EV_P_ ev_signal *w) 4207ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3428{ 4208{
3429 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3430 if (expect_false (!ev_is_active (w))) 4210 if (expect_false (!ev_is_active (w)))
3431 return; 4211 return;
3432 4212
… …
3463#endif 4243#endif
3464 4244
3465#if EV_CHILD_ENABLE 4245#if EV_CHILD_ENABLE
3466 4246
3467void 4247void
3468ev_child_start (EV_P_ ev_child *w) 4248ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3469{ 4249{
3470#if EV_MULTIPLICITY 4250#if EV_MULTIPLICITY
3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4251 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3472#endif 4252#endif
3473 if (expect_false (ev_is_active (w))) 4253 if (expect_false (ev_is_active (w)))
… …
3480 4260
3481 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3482} 4262}
3483 4263
3484void 4264void
3485ev_child_stop (EV_P_ ev_child *w) 4265ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3486{ 4266{
3487 clear_pending (EV_A_ (W)w); 4267 clear_pending (EV_A_ (W)w);
3488 if (expect_false (!ev_is_active (w))) 4268 if (expect_false (!ev_is_active (w)))
3489 return; 4269 return;
3490 4270
… …
3507 4287
3508#define DEF_STAT_INTERVAL 5.0074891 4288#define DEF_STAT_INTERVAL 5.0074891
3509#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4289#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3510#define MIN_STAT_INTERVAL 0.1074891 4290#define MIN_STAT_INTERVAL 0.1074891
3511 4291
3512static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4292noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3513 4293
3514#if EV_USE_INOTIFY 4294#if EV_USE_INOTIFY
3515 4295
3516/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4296/* 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) 4297# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3518 4298
3519static void noinline 4299noinline
4300static void
3520infy_add (EV_P_ ev_stat *w) 4301infy_add (EV_P_ ev_stat *w)
3521{ 4302{
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); 4303 w->wd = inotify_add_watch (fs_fd, w->path,
4304 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4305 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4306 | IN_DONT_FOLLOW | IN_MASK_ADD);
3523 4307
3524 if (w->wd >= 0) 4308 if (w->wd >= 0)
3525 { 4309 {
3526 struct statfs sfs; 4310 struct statfs sfs;
3527 4311
… …
3531 4315
3532 if (!fs_2625) 4316 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4317 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs) 4318 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */ 4319 && (sfs.f_type == 0x1373 /* devfs */
4320 || sfs.f_type == 0x4006 /* fat */
4321 || sfs.f_type == 0x4d44 /* msdos */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */ 4322 || sfs.f_type == 0xEF53 /* ext2/3 */
4323 || sfs.f_type == 0x72b6 /* jffs2 */
4324 || sfs.f_type == 0x858458f6 /* ramfs */
4325 || sfs.f_type == 0x5346544e /* ntfs */
3537 || sfs.f_type == 0x3153464a /* jfs */ 4326 || sfs.f_type == 0x3153464a /* jfs */
4327 || sfs.f_type == 0x9123683e /* btrfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */ 4328 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */ 4329 || sfs.f_type == 0x01021994 /* tmpfs */
3540 || sfs.f_type == 0x58465342 /* xfs */)) 4330 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4331 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else 4332 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4333 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3544 } 4334 }
… …
3579 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4369 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3580 ev_timer_again (EV_A_ &w->timer); 4370 ev_timer_again (EV_A_ &w->timer);
3581 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4371 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3582} 4372}
3583 4373
3584static void noinline 4374noinline
4375static void
3585infy_del (EV_P_ ev_stat *w) 4376infy_del (EV_P_ ev_stat *w)
3586{ 4377{
3587 int slot; 4378 int slot;
3588 int wd = w->wd; 4379 int wd = w->wd;
3589 4380
… …
3596 4387
3597 /* remove this watcher, if others are watching it, they will rearm */ 4388 /* remove this watcher, if others are watching it, they will rearm */
3598 inotify_rm_watch (fs_fd, wd); 4389 inotify_rm_watch (fs_fd, wd);
3599} 4390}
3600 4391
3601static void noinline 4392noinline
4393static void
3602infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4394infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3603{ 4395{
3604 if (slot < 0) 4396 if (slot < 0)
3605 /* overflow, need to check for all hash slots */ 4397 /* overflow, need to check for all hash slots */
3606 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4398 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3642 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4434 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3643 ofs += sizeof (struct inotify_event) + ev->len; 4435 ofs += sizeof (struct inotify_event) + ev->len;
3644 } 4436 }
3645} 4437}
3646 4438
3647inline_size void ecb_cold 4439inline_size ecb_cold
4440void
3648ev_check_2625 (EV_P) 4441ev_check_2625 (EV_P)
3649{ 4442{
3650 /* kernels < 2.6.25 are borked 4443 /* kernels < 2.6.25 are borked
3651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4444 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3652 */ 4445 */
… …
3657} 4450}
3658 4451
3659inline_size int 4452inline_size int
3660infy_newfd (void) 4453infy_newfd (void)
3661{ 4454{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4455#if defined IN_CLOEXEC && defined IN_NONBLOCK
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4456 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0) 4457 if (fd >= 0)
3665 return fd; 4458 return fd;
3666#endif 4459#endif
3667 return inotify_init (); 4460 return inotify_init ();
… …
3742#else 4535#else
3743# define EV_LSTAT(p,b) lstat (p, b) 4536# define EV_LSTAT(p,b) lstat (p, b)
3744#endif 4537#endif
3745 4538
3746void 4539void
3747ev_stat_stat (EV_P_ ev_stat *w) 4540ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3748{ 4541{
3749 if (lstat (w->path, &w->attr) < 0) 4542 if (lstat (w->path, &w->attr) < 0)
3750 w->attr.st_nlink = 0; 4543 w->attr.st_nlink = 0;
3751 else if (!w->attr.st_nlink) 4544 else if (!w->attr.st_nlink)
3752 w->attr.st_nlink = 1; 4545 w->attr.st_nlink = 1;
3753} 4546}
3754 4547
3755static void noinline 4548noinline
4549static void
3756stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4550stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3757{ 4551{
3758 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4552 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3759 4553
3760 ev_statdata prev = w->attr; 4554 ev_statdata prev = w->attr;
… …
3791 ev_feed_event (EV_A_ w, EV_STAT); 4585 ev_feed_event (EV_A_ w, EV_STAT);
3792 } 4586 }
3793} 4587}
3794 4588
3795void 4589void
3796ev_stat_start (EV_P_ ev_stat *w) 4590ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3797{ 4591{
3798 if (expect_false (ev_is_active (w))) 4592 if (expect_false (ev_is_active (w)))
3799 return; 4593 return;
3800 4594
3801 ev_stat_stat (EV_A_ w); 4595 ev_stat_stat (EV_A_ w);
… …
3822 4616
3823 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3824} 4618}
3825 4619
3826void 4620void
3827ev_stat_stop (EV_P_ ev_stat *w) 4621ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3828{ 4622{
3829 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
3830 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
3831 return; 4625 return;
3832 4626
… …
3848} 4642}
3849#endif 4643#endif
3850 4644
3851#if EV_IDLE_ENABLE 4645#if EV_IDLE_ENABLE
3852void 4646void
3853ev_idle_start (EV_P_ ev_idle *w) 4647ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4648{
3855 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3856 return; 4650 return;
3857 4651
3858 pri_adjust (EV_A_ (W)w); 4652 pri_adjust (EV_A_ (W)w);
… …
3863 int active = ++idlecnt [ABSPRI (w)]; 4657 int active = ++idlecnt [ABSPRI (w)];
3864 4658
3865 ++idleall; 4659 ++idleall;
3866 ev_start (EV_A_ (W)w, active); 4660 ev_start (EV_A_ (W)w, active);
3867 4661
3868 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4662 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3869 idles [ABSPRI (w)][active - 1] = w; 4663 idles [ABSPRI (w)][active - 1] = w;
3870 } 4664 }
3871 4665
3872 EV_FREQUENT_CHECK; 4666 EV_FREQUENT_CHECK;
3873} 4667}
3874 4668
3875void 4669void
3876ev_idle_stop (EV_P_ ev_idle *w) 4670ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3877{ 4671{
3878 clear_pending (EV_A_ (W)w); 4672 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4673 if (expect_false (!ev_is_active (w)))
3880 return; 4674 return;
3881 4675
… …
3895} 4689}
3896#endif 4690#endif
3897 4691
3898#if EV_PREPARE_ENABLE 4692#if EV_PREPARE_ENABLE
3899void 4693void
3900ev_prepare_start (EV_P_ ev_prepare *w) 4694ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3901{ 4695{
3902 if (expect_false (ev_is_active (w))) 4696 if (expect_false (ev_is_active (w)))
3903 return; 4697 return;
3904 4698
3905 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3906 4700
3907 ev_start (EV_A_ (W)w, ++preparecnt); 4701 ev_start (EV_A_ (W)w, ++preparecnt);
3908 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4702 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3909 prepares [preparecnt - 1] = w; 4703 prepares [preparecnt - 1] = w;
3910 4704
3911 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
3912} 4706}
3913 4707
3914void 4708void
3915ev_prepare_stop (EV_P_ ev_prepare *w) 4709ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3916{ 4710{
3917 clear_pending (EV_A_ (W)w); 4711 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4712 if (expect_false (!ev_is_active (w)))
3919 return; 4713 return;
3920 4714
… …
3933} 4727}
3934#endif 4728#endif
3935 4729
3936#if EV_CHECK_ENABLE 4730#if EV_CHECK_ENABLE
3937void 4731void
3938ev_check_start (EV_P_ ev_check *w) 4732ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3939{ 4733{
3940 if (expect_false (ev_is_active (w))) 4734 if (expect_false (ev_is_active (w)))
3941 return; 4735 return;
3942 4736
3943 EV_FREQUENT_CHECK; 4737 EV_FREQUENT_CHECK;
3944 4738
3945 ev_start (EV_A_ (W)w, ++checkcnt); 4739 ev_start (EV_A_ (W)w, ++checkcnt);
3946 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4740 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3947 checks [checkcnt - 1] = w; 4741 checks [checkcnt - 1] = w;
3948 4742
3949 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
3950} 4744}
3951 4745
3952void 4746void
3953ev_check_stop (EV_P_ ev_check *w) 4747ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3954{ 4748{
3955 clear_pending (EV_A_ (W)w); 4749 clear_pending (EV_A_ (W)w);
3956 if (expect_false (!ev_is_active (w))) 4750 if (expect_false (!ev_is_active (w)))
3957 return; 4751 return;
3958 4752
… …
3970 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3971} 4765}
3972#endif 4766#endif
3973 4767
3974#if EV_EMBED_ENABLE 4768#if EV_EMBED_ENABLE
3975void noinline 4769noinline
4770void
3976ev_embed_sweep (EV_P_ ev_embed *w) 4771ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3977{ 4772{
3978 ev_run (w->other, EVRUN_NOWAIT); 4773 ev_run (w->other, EVRUN_NOWAIT);
3979} 4774}
3980 4775
3981static void 4776static void
… …
4029 ev_idle_stop (EV_A_ idle); 4824 ev_idle_stop (EV_A_ idle);
4030} 4825}
4031#endif 4826#endif
4032 4827
4033void 4828void
4034ev_embed_start (EV_P_ ev_embed *w) 4829ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4035{ 4830{
4036 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4037 return; 4832 return;
4038 4833
4039 { 4834 {
… …
4060 4855
4061 EV_FREQUENT_CHECK; 4856 EV_FREQUENT_CHECK;
4062} 4857}
4063 4858
4064void 4859void
4065ev_embed_stop (EV_P_ ev_embed *w) 4860ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4066{ 4861{
4067 clear_pending (EV_A_ (W)w); 4862 clear_pending (EV_A_ (W)w);
4068 if (expect_false (!ev_is_active (w))) 4863 if (expect_false (!ev_is_active (w)))
4069 return; 4864 return;
4070 4865
… …
4080} 4875}
4081#endif 4876#endif
4082 4877
4083#if EV_FORK_ENABLE 4878#if EV_FORK_ENABLE
4084void 4879void
4085ev_fork_start (EV_P_ ev_fork *w) 4880ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4086{ 4881{
4087 if (expect_false (ev_is_active (w))) 4882 if (expect_false (ev_is_active (w)))
4088 return; 4883 return;
4089 4884
4090 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
4091 4886
4092 ev_start (EV_A_ (W)w, ++forkcnt); 4887 ev_start (EV_A_ (W)w, ++forkcnt);
4093 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4888 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4094 forks [forkcnt - 1] = w; 4889 forks [forkcnt - 1] = w;
4095 4890
4096 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4097} 4892}
4098 4893
4099void 4894void
4100ev_fork_stop (EV_P_ ev_fork *w) 4895ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4101{ 4896{
4102 clear_pending (EV_A_ (W)w); 4897 clear_pending (EV_A_ (W)w);
4103 if (expect_false (!ev_is_active (w))) 4898 if (expect_false (!ev_is_active (w)))
4104 return; 4899 return;
4105 4900
… …
4118} 4913}
4119#endif 4914#endif
4120 4915
4121#if EV_CLEANUP_ENABLE 4916#if EV_CLEANUP_ENABLE
4122void 4917void
4123ev_cleanup_start (EV_P_ ev_cleanup *w) 4918ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4124{ 4919{
4125 if (expect_false (ev_is_active (w))) 4920 if (expect_false (ev_is_active (w)))
4126 return; 4921 return;
4127 4922
4128 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4129 4924
4130 ev_start (EV_A_ (W)w, ++cleanupcnt); 4925 ev_start (EV_A_ (W)w, ++cleanupcnt);
4131 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4926 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4132 cleanups [cleanupcnt - 1] = w; 4927 cleanups [cleanupcnt - 1] = w;
4133 4928
4134 /* cleanup watchers should never keep a refcount on the loop */ 4929 /* cleanup watchers should never keep a refcount on the loop */
4135 ev_unref (EV_A); 4930 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
4137} 4932}
4138 4933
4139void 4934void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w) 4935ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4141{ 4936{
4142 clear_pending (EV_A_ (W)w); 4937 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w))) 4938 if (expect_false (!ev_is_active (w)))
4144 return; 4939 return;
4145 4940
… …
4159} 4954}
4160#endif 4955#endif
4161 4956
4162#if EV_ASYNC_ENABLE 4957#if EV_ASYNC_ENABLE
4163void 4958void
4164ev_async_start (EV_P_ ev_async *w) 4959ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4165{ 4960{
4166 if (expect_false (ev_is_active (w))) 4961 if (expect_false (ev_is_active (w)))
4167 return; 4962 return;
4168 4963
4169 w->sent = 0; 4964 w->sent = 0;
… …
4171 evpipe_init (EV_A); 4966 evpipe_init (EV_A);
4172 4967
4173 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4174 4969
4175 ev_start (EV_A_ (W)w, ++asynccnt); 4970 ev_start (EV_A_ (W)w, ++asynccnt);
4176 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4971 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4177 asyncs [asynccnt - 1] = w; 4972 asyncs [asynccnt - 1] = w;
4178 4973
4179 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4180} 4975}
4181 4976
4182void 4977void
4183ev_async_stop (EV_P_ ev_async *w) 4978ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4184{ 4979{
4185 clear_pending (EV_A_ (W)w); 4980 clear_pending (EV_A_ (W)w);
4186 if (expect_false (!ev_is_active (w))) 4981 if (expect_false (!ev_is_active (w)))
4187 return; 4982 return;
4188 4983
… …
4199 4994
4200 EV_FREQUENT_CHECK; 4995 EV_FREQUENT_CHECK;
4201} 4996}
4202 4997
4203void 4998void
4204ev_async_send (EV_P_ ev_async *w) 4999ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4205{ 5000{
4206 w->sent = 1; 5001 w->sent = 1;
4207 evpipe_write (EV_A_ &async_pending); 5002 evpipe_write (EV_A_ &async_pending);
4208} 5003}
4209#endif 5004#endif
… …
4246 5041
4247 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5042 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4248} 5043}
4249 5044
4250void 5045void
4251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5046ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4252{ 5047{
4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5048 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 5049
4261 once->cb = cb; 5050 once->cb = cb;
4262 once->arg = arg; 5051 once->arg = arg;
4263 5052
4264 ev_init (&once->io, once_cb_io); 5053 ev_init (&once->io, once_cb_io);
… …
4277} 5066}
4278 5067
4279/*****************************************************************************/ 5068/*****************************************************************************/
4280 5069
4281#if EV_WALK_ENABLE 5070#if EV_WALK_ENABLE
4282void ecb_cold 5071ecb_cold
5072void
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5073ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4284{ 5074{
4285 int i, j; 5075 int i, j;
4286 ev_watcher_list *wl, *wn; 5076 ev_watcher_list *wl, *wn;
4287 5077
4288 if (types & (EV_IO | EV_EMBED)) 5078 if (types & (EV_IO | EV_EMBED))
… …
4394 5184
4395#if EV_MULTIPLICITY 5185#if EV_MULTIPLICITY
4396 #include "ev_wrap.h" 5186 #include "ev_wrap.h"
4397#endif 5187#endif
4398 5188
4399EV_CPP(})
4400

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