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Comparing libev/ev.c (file contents):
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC vs.
Revision 1.495 by root, Mon Jun 24 21:27:57 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
302#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 340# else
306# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
347 382
348#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 385#endif
351 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
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 || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
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>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 514
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 517
469/* the following are taken from libecb */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
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
589#else
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
608#endif
471 609
472/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 613 * or so.
476 * 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
477 * 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.
478 */ 616 */
479#ifndef ECB_GCC_VERSION
480 #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__
481 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
482 #else 619#else
483 #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)))
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
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
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 */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #if __i386 || __i386__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
692 #elif ECB_GCC_AMD64
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
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 */
705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
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__ \
710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
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")
737 #endif
484 #endif 738 #endif
485#endif 739#endif
486 740
487#if __cplusplus 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
754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
755 #define ECB_MEMORY_FENCE __sync_synchronize ()
756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
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()
762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
767 #elif defined _WIN32
768 #include <WinNT.h>
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)
794 #endif
795#endif
796
797#ifndef ECB_MEMORY_FENCE
798 #if !ECB_AVOID_PTHREADS
799 /*
800 * if you get undefined symbol references to pthread_mutex_lock,
801 * or failure to find pthread.h, then you should implement
802 * the ECB_MEMORY_FENCE operations for your cpu/compiler
803 * OR provide pthread.h and link against the posix thread library
804 * of your system.
805 */
806 #include <pthread.h>
807 #define ECB_NEEDS_PTHREADS 1
808 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
809
810 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
812 #endif
813#endif
814
815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
817#endif
818
819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
821#endif
822
823/*****************************************************************************/
824
825#if ECB_CPP
488 #define ecb_inline static inline 826 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 827#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 828 #define ecb_inline static __inline__
491#elif ECB_C99 829#elif ECB_C99
492 #define ecb_inline static inline 830 #define ecb_inline static inline
493#else 831#else
494 #define ecb_inline static 832 #define ecb_inline static
495#endif 833#endif
496 834
497#if ECB_GCC_VERSION(3,1) 835#if ECB_GCC_VERSION(3,3)
836 #define ecb_restrict __restrict__
837#elif ECB_C99
838 #define ecb_restrict restrict
839#else
840 #define ecb_restrict
841#endif
842
843typedef int ecb_bool;
844
845#define ECB_CONCAT_(a, b) a ## b
846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
847#define ECB_STRINGIFY_(a) # a
848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
850
851#define ecb_function_ ecb_inline
852
853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
498 #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)
499 #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)
500 #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)
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else 877#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 878 #define ecb_prefetch(addr,rw,locality)
507#endif 879#endif
508 880
881/* no emulation for ecb_decltype */
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; };
885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
887 #define ecb_decltype(x) __typeof__ (x)
888#endif
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
509#define ecb_noinline ecb_attribute ((__noinline__)) 907 #define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__)) 908#endif
909
511#define ecb_unused ecb_attribute ((__unused__)) 910#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 911#define ecb_const ecb_attribute ((__const__))
513#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
514 925
515#if ECB_GCC_VERSION(4,3) 926#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 927 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 928 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 929 #define ecb_cold ecb_attribute ((__cold__))
… …
525/* put around conditional expressions if you are very sure that the */ 936/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 937/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 938/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 939#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 940#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */ 941/* for compatibility to the rest of the world */
942#define ecb_likely(expr) ecb_expect_true (expr)
943#define ecb_unlikely(expr) ecb_expect_false (expr)
944
945/* count trailing zero bits and count # of one bits */
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))
950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
953 #define ecb_ctz32(x) __builtin_ctz (x)
954 #define ecb_ctz64(x) __builtin_ctzll (x)
955 #define ecb_popcount32(x) __builtin_popcount (x)
956 /* no popcountll */
957#else
958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
959 ecb_function_ ecb_const int
960 ecb_ctz32 (uint32_t x)
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
967 int r = 0;
968
969 x &= ~x + 1; /* this isolates the lowest bit */
970
971#if ECB_branchless_on_i386
972 r += !!(x & 0xaaaaaaaa) << 0;
973 r += !!(x & 0xcccccccc) << 1;
974 r += !!(x & 0xf0f0f0f0) << 2;
975 r += !!(x & 0xff00ff00) << 3;
976 r += !!(x & 0xffff0000) << 4;
977#else
978 if (x & 0xaaaaaaaa) r += 1;
979 if (x & 0xcccccccc) r += 2;
980 if (x & 0xf0f0f0f0) r += 4;
981 if (x & 0xff00ff00) r += 8;
982 if (x & 0xffff0000) r += 16;
983#endif
984
985 return r;
986#endif
987 }
988
989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
990 ecb_function_ ecb_const int
991 ecb_ctz64 (uint64_t x)
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
998 int shift = x & 0xffffffff ? 0 : 32;
999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
1001 }
1002
1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1004 ecb_function_ ecb_const int
1005 ecb_popcount32 (uint32_t x)
1006 {
1007 x -= (x >> 1) & 0x55555555;
1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
1010 x *= 0x01010101;
1011
1012 return x >> 24;
1013 }
1014
1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
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
1023 int r = 0;
1024
1025 if (x >> 16) { x >>= 16; r += 16; }
1026 if (x >> 8) { x >>= 8; r += 8; }
1027 if (x >> 4) { x >>= 4; r += 4; }
1028 if (x >> 2) { x >>= 2; r += 2; }
1029 if (x >> 1) { r += 1; }
1030
1031 return r;
1032#endif
1033 }
1034
1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
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
1043 int r = 0;
1044
1045 if (x >> 32) { x >>= 32; r += 32; }
1046
1047 return r + ecb_ld32 (x);
1048#endif
1049 }
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}
1086
1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
1088/* so for this version we are lazy */
1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1090ecb_function_ ecb_const int
1091ecb_popcount64 (uint64_t x)
1092{
1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1094}
1095
1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1104
1105ecb_inline ecb_const uint8_t ecb_rotl8 (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); }
1107ecb_inline ecb_const uint16_t ecb_rotl16 (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); }
1109ecb_inline ecb_const uint32_t ecb_rotl32 (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); }
1111ecb_inline ecb_const uint64_t ecb_rotl64 (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); }
1113
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
1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
1120 #define ecb_bswap32(x) __builtin_bswap32 (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)))
1127#else
1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1129 ecb_function_ ecb_const uint16_t
1130 ecb_bswap16 (uint16_t x)
1131 {
1132 return ecb_rotl16 (x, 8);
1133 }
1134
1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1136 ecb_function_ ecb_const uint32_t
1137 ecb_bswap32 (uint32_t x)
1138 {
1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1140 }
1141
1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1143 ecb_function_ ecb_const uint64_t
1144 ecb_bswap64 (uint64_t x)
1145 {
1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1147 }
1148#endif
1149
1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1151 #define ecb_unreachable() __builtin_unreachable ()
1152#else
1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1156#endif
1157
1158/* try to tell the compiler that some condition is definitely true */
1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1160
1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1162ecb_inline ecb_const uint32_t
1163ecb_byteorder_helper (void)
1164{
1165 /* the union code still generates code under pressure in gcc, */
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
1187}
1188
1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1193
1194#if ECB_GCC_VERSION(3,0) || ECB_C99
1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1196#else
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))
1214#endif
1215
1216#if ecb_cplusplus_does_not_suck
1217 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1218 template<typename T, int N>
1219 static inline int ecb_array_length (const T (&arr)[N])
1220 {
1221 return N;
1222 }
1223#else
1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1225#endif
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
1532#endif
1533
1534/* ECB.H END */
1535
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
1547#ifndef ECB_MEMORY_FENCE
1548# define ECB_MEMORY_FENCE do { } while (0)
1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1551#endif
531 1552
532#define expect_false(cond) ecb_expect_false (cond) 1553#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond) 1554#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline 1555#define noinline ecb_noinline
535 1556
536#define inline_size ecb_inline 1557#define inline_size ecb_inline
537 1558
538#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
539# define inline_speed ecb_inline 1560# define inline_speed ecb_inline
540#else 1561#else
541# define inline_speed static noinline 1562# define inline_speed noinline static
542#endif 1563#endif
543 1564
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545 1566
546#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
548#else 1569#else
549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif 1571#endif
551 1572
552#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
553#define EMPTY2(a,b) /* used to suppress some warnings */
554 1574
555typedef ev_watcher *W; 1575typedef ev_watcher *W;
556typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
557typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
558 1578
… …
583# include "ev_win32.c" 1603# include "ev_win32.c"
584#endif 1604#endif
585 1605
586/*****************************************************************************/ 1606/*****************************************************************************/
587 1607
1608#if EV_USE_LINUXAIO
1609# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1610#endif
1611
588/* define a suitable floor function (only used by periodics atm) */ 1612/* define a suitable floor function (only used by periodics atm) */
589 1613
590#if EV_USE_FLOOR 1614#if EV_USE_FLOOR
591# include <math.h> 1615# include <math.h>
592# define ev_floor(v) floor (v) 1616# define ev_floor(v) floor (v)
593#else 1617#else
594 1618
595#include <float.h> 1619#include <float.h>
596 1620
597/* a floor() replacement function, should be independent of ev_tstamp type */ 1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
598static ev_tstamp noinline 1623static ev_tstamp
599ev_floor (ev_tstamp v) 1624ev_floor (ev_tstamp v)
600{ 1625{
601 /* the choice of shift factor is not terribly important */ 1626 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
635 1660
636#ifdef __linux 1661#ifdef __linux
637# include <sys/utsname.h> 1662# include <sys/utsname.h>
638#endif 1663#endif
639 1664
640static unsigned int noinline ecb_cold 1665noinline ecb_cold
1666static unsigned int
641ev_linux_version (void) 1667ev_linux_version (void)
642{ 1668{
643#ifdef __linux 1669#ifdef __linux
644 unsigned int v = 0; 1670 unsigned int v = 0;
645 struct utsname buf; 1671 struct utsname buf;
… …
674} 1700}
675 1701
676/*****************************************************************************/ 1702/*****************************************************************************/
677 1703
678#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
679static void noinline ecb_cold 1705noinline ecb_cold
1706static void
680ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
681{ 1708{
682 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
683} 1710}
684#endif 1711#endif
685 1712
686static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
687 1714
688void ecb_cold 1715ecb_cold
1716void
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
690{ 1718{
691 syserr_cb = cb; 1719 syserr_cb = cb;
692} 1720}
693 1721
694static void noinline ecb_cold 1722noinline ecb_cold
1723static void
695ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
696{ 1725{
697 if (!msg) 1726 if (!msg)
698 msg = "(libev) system error"; 1727 msg = "(libev) system error";
699 1728
… …
712 abort (); 1741 abort ();
713 } 1742 }
714} 1743}
715 1744
716static void * 1745static void *
717ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
718{ 1747{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
722 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
723 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
724 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
725 */ 1753 */
726 1754
727 if (size) 1755 if (size)
728 return realloc (ptr, size); 1756 return realloc (ptr, size);
729 1757
730 free (ptr); 1758 free (ptr);
731 return 0; 1759 return 0;
732#endif
733} 1760}
734 1761
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
736 1763
737void ecb_cold 1764ecb_cold
1765void
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
739{ 1767{
740 alloc = cb; 1768 alloc = cb;
741} 1769}
742 1770
743inline_speed void * 1771inline_speed void *
… …
770typedef struct 1798typedef struct
771{ 1799{
772 WL head; 1800 WL head;
773 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
776 unsigned char unused; 1804 unsigned char unused;
777#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif 1807#endif
780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
831 #undef VAR 1859 #undef VAR
832 }; 1860 };
833 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
834 1862
835 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
836 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837 1865
838#else 1866#else
839 1867
840 ev_tstamp ev_rt_now; 1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
841 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1870 #include "ev_vars.h"
843 #undef VAR 1871 #undef VAR
844 1872
845 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
… …
860 1888
861/*****************************************************************************/ 1889/*****************************************************************************/
862 1890
863#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1892ev_tstamp
865ev_time (void) 1893ev_time (void) EV_NOEXCEPT
866{ 1894{
867#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
869 { 1897 {
870 struct timespec ts; 1898 struct timespec ts;
… …
894 return ev_time (); 1922 return ev_time ();
895} 1923}
896 1924
897#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
898ev_tstamp 1926ev_tstamp
899ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
900{ 1928{
901 return ev_rt_now; 1929 return ev_rt_now;
902} 1930}
903#endif 1931#endif
904 1932
905void 1933void
906ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
907{ 1935{
908 if (delay > 0.) 1936 if (delay > 0.)
909 { 1937 {
910#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
911 struct timespec ts; 1939 struct timespec ts;
912 1940
913 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
915#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
916 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
917#else 1947#else
918 struct timeval tv; 1948 struct timeval tv;
919 1949
920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
939 1969
940 do 1970 do
941 ncur <<= 1; 1971 ncur <<= 1;
942 while (cnt > ncur); 1972 while (cnt > ncur);
943 1973
944 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 1976 {
947 ncur *= elem; 1977 ncur *= elem;
948 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
951 } 1981 }
952 1982
953 return ncur; 1983 return ncur;
954} 1984}
955 1985
956static void * noinline ecb_cold 1986noinline ecb_cold
1987static void *
957array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
958{ 1989{
959 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
960 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
961} 1992}
962 1993
1994#define array_needsize_noinit(base,offset,count)
1995
963#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,offset,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
965 1998
966#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
968 { \ 2001 { \
969 int ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base), ocur_, ((cur) - ocur_)); \
973 } 2006 }
974 2007
975#if 0 2008#if 0
976#define array_slim(type,stem) \ 2009#define array_slim(type,stem) \
977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2010 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
987 2020
988/*****************************************************************************/ 2021/*****************************************************************************/
989 2022
990/* dummy callback for pending events */ 2023/* dummy callback for pending events */
991static void noinline 2024noinline
2025static void
992pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 2027{
994} 2028}
995 2029
996void noinline 2030noinline
2031void
997ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
998{ 2033{
999 W w_ = (W)w; 2034 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
1001 2036
1002 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
1003 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
1004 else 2039 else
1005 { 2040 {
1006 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1008 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
1010 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
1011} 2048}
1012 2049
1013inline_speed void 2050inline_speed void
1014feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
1015{ 2052{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1017 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
1018} 2055}
1019 2056
1020inline_size void 2057inline_size void
1021feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
1061 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
1063} 2100}
1064 2101
1065void 2102void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1067{ 2104{
1068 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
1070} 2107}
1071 2108
… …
1129 2166
1130 fdchangecnt = 0; 2167 fdchangecnt = 0;
1131} 2168}
1132 2169
1133/* something about the given fd changed */ 2170/* something about the given fd changed */
1134inline_size void 2171inline_size
2172void
1135fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1136{ 2174{
1137 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1138 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1139 2177
1140 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1141 { 2179 {
1142 ++fdchangecnt; 2180 ++fdchangecnt;
1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1144 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1145 } 2183 }
1146} 2184}
1147 2185
1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold 2187inline_speed ecb_cold void
1150fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1151{ 2189{
1152 ev_io *w; 2190 ev_io *w;
1153 2191
1154 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1158 } 2196 }
1159} 2197}
1160 2198
1161/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold 2200inline_size ecb_cold int
1163fd_valid (int fd) 2201fd_valid (int fd)
1164{ 2202{
1165#ifdef _WIN32 2203#ifdef _WIN32
1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1167#else 2205#else
1168 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1169#endif 2207#endif
1170} 2208}
1171 2209
1172/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1173static void noinline ecb_cold 2211noinline ecb_cold
2212static void
1174fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1175{ 2214{
1176 int fd; 2215 int fd;
1177 2216
1178 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1180 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1181 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1182} 2221}
1183 2222
1184/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1185static void noinline ecb_cold 2224noinline ecb_cold
2225static void
1186fd_enomem (EV_P) 2226fd_enomem (EV_P)
1187{ 2227{
1188 int fd; 2228 int fd;
1189 2229
1190 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1194 break; 2234 break;
1195 } 2235 }
1196} 2236}
1197 2237
1198/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1199static void noinline 2239noinline
2240static void
1200fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1201{ 2242{
1202 int fd; 2243 int fd;
1203 2244
1204 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1385 2426
1386/*****************************************************************************/ 2427/*****************************************************************************/
1387 2428
1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1389 2430
1390static void noinline ecb_cold 2431noinline ecb_cold
2432static void
1391evpipe_init (EV_P) 2433evpipe_init (EV_P)
1392{ 2434{
1393 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1394 { 2436 {
2437 int fds [2];
2438
1395# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1398 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1399 2444
1400 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1401 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1402 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1403 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1404 ev_io_set (&pipe_w, evfd, EV_READ); 2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
2477inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481
2482 if (expect_true (*flag))
2483 return;
2484
2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
2501#if EV_USE_EVENTFD
2502 if (evpipe [0] < 0)
2503 {
2504 uint64_t counter = 1;
2505 write (evpipe [1], &counter, sizeof (uint64_t));
1405 } 2506 }
1406 else 2507 else
1407# endif 2508#endif
1408 { 2509 {
1409 while (pipe (evpipe)) 2510#ifdef _WIN32
1410 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1411 2512 DWORD sent;
1412 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1413 fd_intern (evpipe [1]); 2514 buf.len = 1;
1414 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2516#else
2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1415 } 2519 }
1416 2520
1417 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 }
1420}
1421
1422inline_size void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{
1425 if (!*flag)
1426 {
1427 *flag = 1;
1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1438#if EV_USE_EVENTFD
1439 if (evfd >= 0)
1440 {
1441 uint64_t counter = 1;
1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno; 2521 errno = old_errno;
1456 }
1457 } 2522 }
1458} 2523}
1459 2524
1460/* called whenever the libev signal pipe */ 2525/* called whenever the libev signal pipe */
1461/* got some events (signal, async) */ 2526/* got some events (signal, async) */
… …
1465 int i; 2530 int i;
1466 2531
1467 if (revents & EV_READ) 2532 if (revents & EV_READ)
1468 { 2533 {
1469#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1470 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1471 { 2536 {
1472 uint64_t counter; 2537 uint64_t counter;
1473 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1474 } 2539 }
1475 else 2540 else
1476#endif 2541#endif
1477 { 2542 {
1478 char dummy; 2543 char dummy[4];
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1480 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
1481 } 2554 }
1482 } 2555 }
1483 2556
1484 pipe_write_skipped = 0; 2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1485 2560
1486#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1487 if (sig_pending) 2562 if (sig_pending)
1488 { 2563 {
1489 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1490 2567
1491 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1492 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1493 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1494 } 2571 }
… …
1496 2573
1497#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1498 if (async_pending) 2575 if (async_pending)
1499 { 2576 {
1500 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1501 2580
1502 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1503 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1504 { 2583 {
1505 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1506 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1507 } 2587 }
1508 } 2588 }
1509#endif 2589#endif
1510} 2590}
1511 2591
1512/*****************************************************************************/ 2592/*****************************************************************************/
1513 2593
1514void 2594void
1515ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1516{ 2596{
1517#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1518 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1519 2601
1520 if (!EV_A) 2602 if (!EV_A)
1521 return; 2603 return;
1522#endif 2604#endif
1523 2605
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1; 2606 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending); 2607 evpipe_write (EV_A_ &sig_pending);
1528} 2608}
1529 2609
1530static void 2610static void
… …
1535#endif 2615#endif
1536 2616
1537 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1538} 2618}
1539 2619
1540void noinline 2620noinline
2621void
1541ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1542{ 2623{
1543 WL w; 2624 WL w;
1544 2625
1545 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1546 return; 2627 return;
1547 2628
1548 --signum; 2629 --signum;
1549 2630
1550#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1554 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1555 return; 2636 return;
1556#endif 2637#endif
1557 2638
1558 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1559 2641
1560 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1562} 2644}
1563 2645
… …
1654# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1655#endif 2737#endif
1656#if EV_USE_EPOLL 2738#if EV_USE_EPOLL
1657# include "ev_epoll.c" 2739# include "ev_epoll.c"
1658#endif 2740#endif
2741#if EV_USE_LINUXAIO
2742# include "ev_linuxaio.c"
2743#endif
1659#if EV_USE_POLL 2744#if EV_USE_POLL
1660# include "ev_poll.c" 2745# include "ev_poll.c"
1661#endif 2746#endif
1662#if EV_USE_SELECT 2747#if EV_USE_SELECT
1663# include "ev_select.c" 2748# include "ev_select.c"
1664#endif 2749#endif
1665 2750
1666int ecb_cold 2751ecb_cold int
1667ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1668{ 2753{
1669 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1670} 2755}
1671 2756
1672int ecb_cold 2757ecb_cold int
1673ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1674{ 2759{
1675 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
1676} 2761}
1677 2762
1678/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
1679int inline_size ecb_cold 2764inline_size ecb_cold int
1680enable_secure (void) 2765enable_secure (void)
1681{ 2766{
1682#ifdef _WIN32 2767#ifdef _WIN32
1683 return 0; 2768 return 0;
1684#else 2769#else
1685 return getuid () != geteuid () 2770 return getuid () != geteuid ()
1686 || getgid () != getegid (); 2771 || getgid () != getegid ();
1687#endif 2772#endif
1688} 2773}
1689 2774
1690unsigned int ecb_cold 2775ecb_cold
2776unsigned int
1691ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
1692{ 2778{
1693 unsigned int flags = 0; 2779 unsigned int flags = 0;
1694 2780
1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1696 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1697 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1698 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1700 2787
1701 return flags; 2788 return flags;
1702} 2789}
1703 2790
1704unsigned int ecb_cold 2791ecb_cold
2792unsigned int
1705ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
1706{ 2794{
1707 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
1708 2796
1709#ifndef __NetBSD__ 2797#ifndef __NetBSD__
1710 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
1718#endif 2806#endif
1719#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
1720 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1721#endif 2809#endif
1722 2810
2811 /* TODO: linuxaio is very experimental */
2812#if !EV_RECOMMEND_LINUXAIO
2813 flags &= ~EVBACKEND_LINUXAIO;
2814#endif
2815
1723 return flags; 2816 return flags;
1724} 2817}
1725 2818
1726unsigned int ecb_cold 2819ecb_cold
2820unsigned int
1727ev_embeddable_backends (void) 2821ev_embeddable_backends (void) EV_NOEXCEPT
1728{ 2822{
1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2823 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1730 2824
1731 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2825 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2826 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1734 2828
1735 return flags; 2829 return flags;
1736} 2830}
1737 2831
1738unsigned int 2832unsigned int
1739ev_backend (EV_P) 2833ev_backend (EV_P) EV_NOEXCEPT
1740{ 2834{
1741 return backend; 2835 return backend;
1742} 2836}
1743 2837
1744#if EV_FEATURE_API 2838#if EV_FEATURE_API
1745unsigned int 2839unsigned int
1746ev_iteration (EV_P) 2840ev_iteration (EV_P) EV_NOEXCEPT
1747{ 2841{
1748 return loop_count; 2842 return loop_count;
1749} 2843}
1750 2844
1751unsigned int 2845unsigned int
1752ev_depth (EV_P) 2846ev_depth (EV_P) EV_NOEXCEPT
1753{ 2847{
1754 return loop_depth; 2848 return loop_depth;
1755} 2849}
1756 2850
1757void 2851void
1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1759{ 2853{
1760 io_blocktime = interval; 2854 io_blocktime = interval;
1761} 2855}
1762 2856
1763void 2857void
1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2858ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1765{ 2859{
1766 timeout_blocktime = interval; 2860 timeout_blocktime = interval;
1767} 2861}
1768 2862
1769void 2863void
1770ev_set_userdata (EV_P_ void *data) 2864ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1771{ 2865{
1772 userdata = data; 2866 userdata = data;
1773} 2867}
1774 2868
1775void * 2869void *
1776ev_userdata (EV_P) 2870ev_userdata (EV_P) EV_NOEXCEPT
1777{ 2871{
1778 return userdata; 2872 return userdata;
1779} 2873}
1780 2874
1781void 2875void
1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2876ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1783{ 2877{
1784 invoke_cb = invoke_pending_cb; 2878 invoke_cb = invoke_pending_cb;
1785} 2879}
1786 2880
1787void 2881void
1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2882ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1789{ 2883{
1790 release_cb = release; 2884 release_cb = release;
1791 acquire_cb = acquire; 2885 acquire_cb = acquire;
1792} 2886}
1793#endif 2887#endif
1794 2888
1795/* initialise a loop structure, must be zero-initialised */ 2889/* initialise a loop structure, must be zero-initialised */
1796static void noinline ecb_cold 2890noinline ecb_cold
2891static void
1797loop_init (EV_P_ unsigned int flags) 2892loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1798{ 2893{
1799 if (!backend) 2894 if (!backend)
1800 { 2895 {
1801 origflags = flags; 2896 origflags = flags;
1802 2897
… …
1847#if EV_ASYNC_ENABLE 2942#if EV_ASYNC_ENABLE
1848 async_pending = 0; 2943 async_pending = 0;
1849#endif 2944#endif
1850 pipe_write_skipped = 0; 2945 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0; 2946 pipe_write_wanted = 0;
2947 evpipe [0] = -1;
2948 evpipe [1] = -1;
1852#if EV_USE_INOTIFY 2949#if EV_USE_INOTIFY
1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2950 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854#endif 2951#endif
1855#if EV_USE_SIGNALFD 2952#if EV_USE_SIGNALFD
1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2953 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1858 2955
1859 if (!(flags & EVBACKEND_MASK)) 2956 if (!(flags & EVBACKEND_MASK))
1860 flags |= ev_recommended_backends (); 2957 flags |= ev_recommended_backends ();
1861 2958
1862#if EV_USE_IOCP 2959#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif 2961#endif
1865#if EV_USE_PORT 2962#if EV_USE_PORT
1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2963 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1867#endif 2964#endif
1868#if EV_USE_KQUEUE 2965#if EV_USE_KQUEUE
1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2967#endif
2968#if EV_USE_LINUXAIO
2969 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1870#endif 2970#endif
1871#if EV_USE_EPOLL 2971#if EV_USE_EPOLL
1872 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1873#endif 2973#endif
1874#if EV_USE_POLL 2974#if EV_USE_POLL
1875 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2975 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1876#endif 2976#endif
1877#if EV_USE_SELECT 2977#if EV_USE_SELECT
1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2978 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1879#endif 2979#endif
1880 2980
1881 ev_prepare_init (&pending_w, pendingcb); 2981 ev_prepare_init (&pending_w, pendingcb);
1882 2982
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2983#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1886#endif 2986#endif
1887 } 2987 }
1888} 2988}
1889 2989
1890/* free up a loop structure */ 2990/* free up a loop structure */
1891void ecb_cold 2991ecb_cold
2992void
1892ev_loop_destroy (EV_P) 2993ev_loop_destroy (EV_P)
1893{ 2994{
1894 int i; 2995 int i;
1895 2996
1896#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
… …
1907 EV_INVOKE_PENDING; 3008 EV_INVOKE_PENDING;
1908 } 3009 }
1909#endif 3010#endif
1910 3011
1911#if EV_CHILD_ENABLE 3012#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev)) 3013 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1913 { 3014 {
1914 ev_ref (EV_A); /* child watcher */ 3015 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev); 3016 ev_signal_stop (EV_A_ &childev);
1916 } 3017 }
1917#endif 3018#endif
… …
1919 if (ev_is_active (&pipe_w)) 3020 if (ev_is_active (&pipe_w))
1920 { 3021 {
1921 /*ev_ref (EV_A);*/ 3022 /*ev_ref (EV_A);*/
1922 /*ev_io_stop (EV_A_ &pipe_w);*/ 3023 /*ev_io_stop (EV_A_ &pipe_w);*/
1923 3024
1924#if EV_USE_EVENTFD
1925 if (evfd >= 0)
1926 close (evfd);
1927#endif
1928
1929 if (evpipe [0] >= 0)
1930 {
1931 EV_WIN32_CLOSE_FD (evpipe [0]); 3025 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1932 EV_WIN32_CLOSE_FD (evpipe [1]); 3026 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1933 }
1934 } 3027 }
1935 3028
1936#if EV_USE_SIGNALFD 3029#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w)) 3030 if (ev_is_active (&sigfd_w))
1938 close (sigfd); 3031 close (sigfd);
… …
1945 3038
1946 if (backend_fd >= 0) 3039 if (backend_fd >= 0)
1947 close (backend_fd); 3040 close (backend_fd);
1948 3041
1949#if EV_USE_IOCP 3042#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3043 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif 3044#endif
1952#if EV_USE_PORT 3045#if EV_USE_PORT
1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3046 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1954#endif 3047#endif
1955#if EV_USE_KQUEUE 3048#if EV_USE_KQUEUE
1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3049 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3050#endif
3051#if EV_USE_LINUXAIO
3052 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1957#endif 3053#endif
1958#if EV_USE_EPOLL 3054#if EV_USE_EPOLL
1959 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3055 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1960#endif 3056#endif
1961#if EV_USE_POLL 3057#if EV_USE_POLL
1962 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3058 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1963#endif 3059#endif
1964#if EV_USE_SELECT 3060#if EV_USE_SELECT
1965 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3061 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1966#endif 3062#endif
1967 3063
1968 for (i = NUMPRI; i--; ) 3064 for (i = NUMPRI; i--; )
1969 { 3065 {
1970 array_free (pending, [i]); 3066 array_free (pending, [i]);
… …
2012 3108
2013inline_size void 3109inline_size void
2014loop_fork (EV_P) 3110loop_fork (EV_P)
2015{ 3111{
2016#if EV_USE_PORT 3112#if EV_USE_PORT
2017 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3113 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2018#endif 3114#endif
2019#if EV_USE_KQUEUE 3115#if EV_USE_KQUEUE
2020 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3116 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3117#endif
3118#if EV_USE_LINUXAIO
3119 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2021#endif 3120#endif
2022#if EV_USE_EPOLL 3121#if EV_USE_EPOLL
2023 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3122 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2024#endif 3123#endif
2025#if EV_USE_INOTIFY 3124#if EV_USE_INOTIFY
2026 infy_fork (EV_A); 3125 infy_fork (EV_A);
2027#endif 3126#endif
2028 3127
3128#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2029 if (ev_is_active (&pipe_w)) 3129 if (ev_is_active (&pipe_w) && postfork != 2)
2030 { 3130 {
2031 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3131 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2032 3132
2033 ev_ref (EV_A); 3133 ev_ref (EV_A);
2034 ev_io_stop (EV_A_ &pipe_w); 3134 ev_io_stop (EV_A_ &pipe_w);
2035 3135
2036#if EV_USE_EVENTFD
2037 if (evfd >= 0)
2038 close (evfd);
2039#endif
2040
2041 if (evpipe [0] >= 0) 3136 if (evpipe [0] >= 0)
2042 {
2043 EV_WIN32_CLOSE_FD (evpipe [0]); 3137 EV_WIN32_CLOSE_FD (evpipe [0]);
2044 EV_WIN32_CLOSE_FD (evpipe [1]);
2045 }
2046 3138
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2048 evpipe_init (EV_A); 3139 evpipe_init (EV_A);
2049 /* now iterate over everything, in case we missed something */ 3140 /* iterate over everything, in case we missed something before */
2050 pipecb (EV_A_ &pipe_w, EV_READ); 3141 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2051#endif
2052 } 3142 }
3143#endif
2053 3144
2054 postfork = 0; 3145 postfork = 0;
2055} 3146}
2056 3147
2057#if EV_MULTIPLICITY 3148#if EV_MULTIPLICITY
2058 3149
3150ecb_cold
2059struct ev_loop * ecb_cold 3151struct ev_loop *
2060ev_loop_new (unsigned int flags) 3152ev_loop_new (unsigned int flags) EV_NOEXCEPT
2061{ 3153{
2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3154 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2063 3155
2064 memset (EV_A, 0, sizeof (struct ev_loop)); 3156 memset (EV_A, 0, sizeof (struct ev_loop));
2065 loop_init (EV_A_ flags); 3157 loop_init (EV_A_ flags);
… …
2072} 3164}
2073 3165
2074#endif /* multiplicity */ 3166#endif /* multiplicity */
2075 3167
2076#if EV_VERIFY 3168#if EV_VERIFY
2077static void noinline ecb_cold 3169noinline ecb_cold
3170static void
2078verify_watcher (EV_P_ W w) 3171verify_watcher (EV_P_ W w)
2079{ 3172{
2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3173 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2081 3174
2082 if (w->pending) 3175 if (w->pending)
2083 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3176 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2084} 3177}
2085 3178
2086static void noinline ecb_cold 3179noinline ecb_cold
3180static void
2087verify_heap (EV_P_ ANHE *heap, int N) 3181verify_heap (EV_P_ ANHE *heap, int N)
2088{ 3182{
2089 int i; 3183 int i;
2090 3184
2091 for (i = HEAP0; i < N + HEAP0; ++i) 3185 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2096 3190
2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3191 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2098 } 3192 }
2099} 3193}
2100 3194
2101static void noinline ecb_cold 3195noinline ecb_cold
3196static void
2102array_verify (EV_P_ W *ws, int cnt) 3197array_verify (EV_P_ W *ws, int cnt)
2103{ 3198{
2104 while (cnt--) 3199 while (cnt--)
2105 { 3200 {
2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3201 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2109} 3204}
2110#endif 3205#endif
2111 3206
2112#if EV_FEATURE_API 3207#if EV_FEATURE_API
2113void ecb_cold 3208void ecb_cold
2114ev_verify (EV_P) 3209ev_verify (EV_P) EV_NOEXCEPT
2115{ 3210{
2116#if EV_VERIFY 3211#if EV_VERIFY
2117 int i; 3212 int i;
2118 WL w; 3213 WL w, w2;
2119 3214
2120 assert (activecnt >= -1); 3215 assert (activecnt >= -1);
2121 3216
2122 assert (fdchangemax >= fdchangecnt); 3217 assert (fdchangemax >= fdchangecnt);
2123 for (i = 0; i < fdchangecnt; ++i) 3218 for (i = 0; i < fdchangecnt; ++i)
2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3219 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2125 3220
2126 assert (anfdmax >= 0); 3221 assert (anfdmax >= 0);
2127 for (i = 0; i < anfdmax; ++i) 3222 for (i = 0; i < anfdmax; ++i)
3223 {
3224 int j = 0;
3225
2128 for (w = anfds [i].head; w; w = w->next) 3226 for (w = w2 = anfds [i].head; w; w = w->next)
2129 { 3227 {
2130 verify_watcher (EV_A_ (W)w); 3228 verify_watcher (EV_A_ (W)w);
3229
3230 if (j++ & 1)
3231 {
3232 assert (("libev: io watcher list contains a loop", w != w2));
3233 w2 = w2->next;
3234 }
3235
2131 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3236 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2132 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3237 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2133 } 3238 }
3239 }
2134 3240
2135 assert (timermax >= timercnt); 3241 assert (timermax >= timercnt);
2136 verify_heap (EV_A_ timers, timercnt); 3242 verify_heap (EV_A_ timers, timercnt);
2137 3243
2138#if EV_PERIODIC_ENABLE 3244#if EV_PERIODIC_ENABLE
… …
2184#endif 3290#endif
2185} 3291}
2186#endif 3292#endif
2187 3293
2188#if EV_MULTIPLICITY 3294#if EV_MULTIPLICITY
3295ecb_cold
2189struct ev_loop * ecb_cold 3296struct ev_loop *
2190#else 3297#else
2191int 3298int
2192#endif 3299#endif
2193ev_default_loop (unsigned int flags) 3300ev_default_loop (unsigned int flags) EV_NOEXCEPT
2194{ 3301{
2195 if (!ev_default_loop_ptr) 3302 if (!ev_default_loop_ptr)
2196 { 3303 {
2197#if EV_MULTIPLICITY 3304#if EV_MULTIPLICITY
2198 EV_P = ev_default_loop_ptr = &default_loop_struct; 3305 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2217 3324
2218 return ev_default_loop_ptr; 3325 return ev_default_loop_ptr;
2219} 3326}
2220 3327
2221void 3328void
2222ev_loop_fork (EV_P) 3329ev_loop_fork (EV_P) EV_NOEXCEPT
2223{ 3330{
2224 postfork = 1; /* must be in line with ev_default_fork */ 3331 postfork = 1;
2225} 3332}
2226 3333
2227/*****************************************************************************/ 3334/*****************************************************************************/
2228 3335
2229void 3336void
… …
2231{ 3338{
2232 EV_CB_INVOKE ((W)w, revents); 3339 EV_CB_INVOKE ((W)w, revents);
2233} 3340}
2234 3341
2235unsigned int 3342unsigned int
2236ev_pending_count (EV_P) 3343ev_pending_count (EV_P) EV_NOEXCEPT
2237{ 3344{
2238 int pri; 3345 int pri;
2239 unsigned int count = 0; 3346 unsigned int count = 0;
2240 3347
2241 for (pri = NUMPRI; pri--; ) 3348 for (pri = NUMPRI; pri--; )
2242 count += pendingcnt [pri]; 3349 count += pendingcnt [pri];
2243 3350
2244 return count; 3351 return count;
2245} 3352}
2246 3353
2247void noinline 3354noinline
3355void
2248ev_invoke_pending (EV_P) 3356ev_invoke_pending (EV_P)
2249{ 3357{
2250 int pri; 3358 pendingpri = NUMPRI;
2251 3359
2252 for (pri = NUMPRI; pri--; ) 3360 do
3361 {
3362 --pendingpri;
3363
3364 /* pendingpri possibly gets modified in the inner loop */
2253 while (pendingcnt [pri]) 3365 while (pendingcnt [pendingpri])
2254 { 3366 {
2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3367 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2256 3368
2257 p->w->pending = 0; 3369 p->w->pending = 0;
2258 EV_CB_INVOKE (p->w, p->events); 3370 EV_CB_INVOKE (p->w, p->events);
2259 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2260 } 3372 }
3373 }
3374 while (pendingpri);
2261} 3375}
2262 3376
2263#if EV_IDLE_ENABLE 3377#if EV_IDLE_ENABLE
2264/* make idle watchers pending. this handles the "call-idle */ 3378/* make idle watchers pending. this handles the "call-idle */
2265/* only when higher priorities are idle" logic */ 3379/* only when higher priorities are idle" logic */
… …
2323 } 3437 }
2324} 3438}
2325 3439
2326#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2327 3441
2328static void noinline 3442noinline
3443static void
2329periodic_recalc (EV_P_ ev_periodic *w) 3444periodic_recalc (EV_P_ ev_periodic *w)
2330{ 3445{
2331 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3446 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2332 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3447 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2333 3448
… …
2355{ 3470{
2356 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2357 3472
2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3473 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2359 { 3474 {
2360 int feed_count = 0;
2361
2362 do 3475 do
2363 { 3476 {
2364 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3477 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365 3478
2366 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3479 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2393 } 3506 }
2394} 3507}
2395 3508
2396/* simply recalculate all periodics */ 3509/* simply recalculate all periodics */
2397/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3510/* TODO: maybe ensure that at least one event happens when jumping forward? */
2398static void noinline ecb_cold 3511noinline ecb_cold
3512static void
2399periodics_reschedule (EV_P) 3513periodics_reschedule (EV_P)
2400{ 3514{
2401 int i; 3515 int i;
2402 3516
2403 /* adjust periodics after time jump */ 3517 /* adjust periodics after time jump */
… …
2416 reheap (periodics, periodiccnt); 3530 reheap (periodics, periodiccnt);
2417} 3531}
2418#endif 3532#endif
2419 3533
2420/* adjust all timers by a given offset */ 3534/* adjust all timers by a given offset */
2421static void noinline ecb_cold 3535noinline ecb_cold
3536static void
2422timers_reschedule (EV_P_ ev_tstamp adjust) 3537timers_reschedule (EV_P_ ev_tstamp adjust)
2423{ 3538{
2424 int i; 3539 int i;
2425 3540
2426 for (i = 0; i < timercnt; ++i) 3541 for (i = 0; i < timercnt; ++i)
… …
2500 3615
2501 mn_now = ev_rt_now; 3616 mn_now = ev_rt_now;
2502 } 3617 }
2503} 3618}
2504 3619
2505void 3620int
2506ev_run (EV_P_ int flags) 3621ev_run (EV_P_ int flags)
2507{ 3622{
2508#if EV_FEATURE_API 3623#if EV_FEATURE_API
2509 ++loop_depth; 3624 ++loop_depth;
2510#endif 3625#endif
… …
2571 time_update (EV_A_ 1e100); 3686 time_update (EV_A_ 1e100);
2572 3687
2573 /* from now on, we want a pipe-wake-up */ 3688 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1; 3689 pipe_write_wanted = 1;
2575 3690
3691 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3692
2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3693 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2577 { 3694 {
2578 waittime = MAX_BLOCKTIME; 3695 waittime = MAX_BLOCKTIME;
2579 3696
2580 if (timercnt) 3697 if (timercnt)
… …
2621#endif 3738#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2623 backend_poll (EV_A_ waittime); 3740 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625 3742
2626 pipe_write_wanted = 0; 3743 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2627 3744
3745 ECB_MEMORY_FENCE_ACQUIRE;
2628 if (pipe_write_skipped) 3746 if (pipe_write_skipped)
2629 { 3747 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3748 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3749 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 } 3750 }
… …
2665 loop_done = EVBREAK_CANCEL; 3783 loop_done = EVBREAK_CANCEL;
2666 3784
2667#if EV_FEATURE_API 3785#if EV_FEATURE_API
2668 --loop_depth; 3786 --loop_depth;
2669#endif 3787#endif
2670}
2671 3788
3789 return activecnt;
3790}
3791
2672void 3792void
2673ev_break (EV_P_ int how) 3793ev_break (EV_P_ int how) EV_NOEXCEPT
2674{ 3794{
2675 loop_done = how; 3795 loop_done = how;
2676} 3796}
2677 3797
2678void 3798void
2679ev_ref (EV_P) 3799ev_ref (EV_P) EV_NOEXCEPT
2680{ 3800{
2681 ++activecnt; 3801 ++activecnt;
2682} 3802}
2683 3803
2684void 3804void
2685ev_unref (EV_P) 3805ev_unref (EV_P) EV_NOEXCEPT
2686{ 3806{
2687 --activecnt; 3807 --activecnt;
2688} 3808}
2689 3809
2690void 3810void
2691ev_now_update (EV_P) 3811ev_now_update (EV_P) EV_NOEXCEPT
2692{ 3812{
2693 time_update (EV_A_ 1e100); 3813 time_update (EV_A_ 1e100);
2694} 3814}
2695 3815
2696void 3816void
2697ev_suspend (EV_P) 3817ev_suspend (EV_P) EV_NOEXCEPT
2698{ 3818{
2699 ev_now_update (EV_A); 3819 ev_now_update (EV_A);
2700} 3820}
2701 3821
2702void 3822void
2703ev_resume (EV_P) 3823ev_resume (EV_P) EV_NOEXCEPT
2704{ 3824{
2705 ev_tstamp mn_prev = mn_now; 3825 ev_tstamp mn_prev = mn_now;
2706 3826
2707 ev_now_update (EV_A); 3827 ev_now_update (EV_A);
2708 timers_reschedule (EV_A_ mn_now - mn_prev); 3828 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2747 w->pending = 0; 3867 w->pending = 0;
2748 } 3868 }
2749} 3869}
2750 3870
2751int 3871int
2752ev_clear_pending (EV_P_ void *w) 3872ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2753{ 3873{
2754 W w_ = (W)w; 3874 W w_ = (W)w;
2755 int pending = w_->pending; 3875 int pending = w_->pending;
2756 3876
2757 if (expect_true (pending)) 3877 if (expect_true (pending))
… …
2789 w->active = 0; 3909 w->active = 0;
2790} 3910}
2791 3911
2792/*****************************************************************************/ 3912/*****************************************************************************/
2793 3913
2794void noinline 3914noinline
3915void
2795ev_io_start (EV_P_ ev_io *w) 3916ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2796{ 3917{
2797 int fd = w->fd; 3918 int fd = w->fd;
2798 3919
2799 if (expect_false (ev_is_active (w))) 3920 if (expect_false (ev_is_active (w)))
2800 return; 3921 return;
… …
2803 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3924 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2804 3925
2805 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2806 3927
2807 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2809 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2810 3934
2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2812 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2813 3937
2814 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2815} 3939}
2816 3940
2817void noinline 3941noinline
3942void
2818ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2819{ 3944{
2820 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2821 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
2822 return; 3947 return;
2823 3948
… …
2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3956 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2832 3957
2833 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
2834} 3959}
2835 3960
2836void noinline 3961noinline
3962void
2837ev_timer_start (EV_P_ ev_timer *w) 3963ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2838{ 3964{
2839 if (expect_false (ev_is_active (w))) 3965 if (expect_false (ev_is_active (w)))
2840 return; 3966 return;
2841 3967
2842 ev_at (w) += mn_now; 3968 ev_at (w) += mn_now;
… …
2845 3971
2846 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2847 3973
2848 ++timercnt; 3974 ++timercnt;
2849 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3975 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2850 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3976 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2851 ANHE_w (timers [ev_active (w)]) = (WT)w; 3977 ANHE_w (timers [ev_active (w)]) = (WT)w;
2852 ANHE_at_cache (timers [ev_active (w)]); 3978 ANHE_at_cache (timers [ev_active (w)]);
2853 upheap (timers, ev_active (w)); 3979 upheap (timers, ev_active (w));
2854 3980
2855 EV_FREQUENT_CHECK; 3981 EV_FREQUENT_CHECK;
2856 3982
2857 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3983 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2858} 3984}
2859 3985
2860void noinline 3986noinline
3987void
2861ev_timer_stop (EV_P_ ev_timer *w) 3988ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2862{ 3989{
2863 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
2865 return; 3992 return;
2866 3993
… …
2885 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
2886 4013
2887 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
2888} 4015}
2889 4016
2890void noinline 4017noinline
4018void
2891ev_timer_again (EV_P_ ev_timer *w) 4019ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2892{ 4020{
2893 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
4022
4023 clear_pending (EV_A_ (W)w);
2894 4024
2895 if (ev_is_active (w)) 4025 if (ev_is_active (w))
2896 { 4026 {
2897 if (w->repeat) 4027 if (w->repeat)
2898 { 4028 {
… …
2911 4041
2912 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
2913} 4043}
2914 4044
2915ev_tstamp 4045ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w) 4046ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2917{ 4047{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4048 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919} 4049}
2920 4050
2921#if EV_PERIODIC_ENABLE 4051#if EV_PERIODIC_ENABLE
2922void noinline 4052noinline
4053void
2923ev_periodic_start (EV_P_ ev_periodic *w) 4054ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2924{ 4055{
2925 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
2926 return; 4057 return;
2927 4058
2928 if (w->reschedule_cb) 4059 if (w->reschedule_cb)
… …
2937 4068
2938 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
2939 4070
2940 ++periodiccnt; 4071 ++periodiccnt;
2941 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4072 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2942 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4073 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2943 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4074 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2944 ANHE_at_cache (periodics [ev_active (w)]); 4075 ANHE_at_cache (periodics [ev_active (w)]);
2945 upheap (periodics, ev_active (w)); 4076 upheap (periodics, ev_active (w));
2946 4077
2947 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
2948 4079
2949 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4080 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2950} 4081}
2951 4082
2952void noinline 4083noinline
4084void
2953ev_periodic_stop (EV_P_ ev_periodic *w) 4085ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2954{ 4086{
2955 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
2956 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
2957 return; 4089 return;
2958 4090
… …
2975 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2976 4108
2977 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2978} 4110}
2979 4111
2980void noinline 4112noinline
4113void
2981ev_periodic_again (EV_P_ ev_periodic *w) 4114ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2982{ 4115{
2983 /* TODO: use adjustheap and recalculation */ 4116 /* TODO: use adjustheap and recalculation */
2984 ev_periodic_stop (EV_A_ w); 4117 ev_periodic_stop (EV_A_ w);
2985 ev_periodic_start (EV_A_ w); 4118 ev_periodic_start (EV_A_ w);
2986} 4119}
… …
2990# define SA_RESTART 0 4123# define SA_RESTART 0
2991#endif 4124#endif
2992 4125
2993#if EV_SIGNAL_ENABLE 4126#if EV_SIGNAL_ENABLE
2994 4127
2995void noinline 4128noinline
4129void
2996ev_signal_start (EV_P_ ev_signal *w) 4130ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2997{ 4131{
2998 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
2999 return; 4133 return;
3000 4134
3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4135 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3003#if EV_MULTIPLICITY 4137#if EV_MULTIPLICITY
3004 assert (("libev: a signal must not be attached to two different loops", 4138 assert (("libev: a signal must not be attached to two different loops",
3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4139 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3006 4140
3007 signals [w->signum - 1].loop = EV_A; 4141 signals [w->signum - 1].loop = EV_A;
4142 ECB_MEMORY_FENCE_RELEASE;
3008#endif 4143#endif
3009 4144
3010 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3011 4146
3012#if EV_USE_SIGNALFD 4147#if EV_USE_SIGNALFD
… …
3071 } 4206 }
3072 4207
3073 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3074} 4209}
3075 4210
3076void noinline 4211noinline
4212void
3077ev_signal_stop (EV_P_ ev_signal *w) 4213ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3078{ 4214{
3079 clear_pending (EV_A_ (W)w); 4215 clear_pending (EV_A_ (W)w);
3080 if (expect_false (!ev_is_active (w))) 4216 if (expect_false (!ev_is_active (w)))
3081 return; 4217 return;
3082 4218
… …
3113#endif 4249#endif
3114 4250
3115#if EV_CHILD_ENABLE 4251#if EV_CHILD_ENABLE
3116 4252
3117void 4253void
3118ev_child_start (EV_P_ ev_child *w) 4254ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3119{ 4255{
3120#if EV_MULTIPLICITY 4256#if EV_MULTIPLICITY
3121 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4257 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3122#endif 4258#endif
3123 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
… …
3130 4266
3131 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3132} 4268}
3133 4269
3134void 4270void
3135ev_child_stop (EV_P_ ev_child *w) 4271ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3136{ 4272{
3137 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3138 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3139 return; 4275 return;
3140 4276
… …
3157 4293
3158#define DEF_STAT_INTERVAL 5.0074891 4294#define DEF_STAT_INTERVAL 5.0074891
3159#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4295#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3160#define MIN_STAT_INTERVAL 0.1074891 4296#define MIN_STAT_INTERVAL 0.1074891
3161 4297
3162static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4298noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3163 4299
3164#if EV_USE_INOTIFY 4300#if EV_USE_INOTIFY
3165 4301
3166/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4302/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4303# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3168 4304
3169static void noinline 4305noinline
4306static void
3170infy_add (EV_P_ ev_stat *w) 4307infy_add (EV_P_ ev_stat *w)
3171{ 4308{
3172 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); 4309 w->wd = inotify_add_watch (fs_fd, w->path,
4310 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4311 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4312 | IN_DONT_FOLLOW | IN_MASK_ADD);
3173 4313
3174 if (w->wd >= 0) 4314 if (w->wd >= 0)
3175 { 4315 {
3176 struct statfs sfs; 4316 struct statfs sfs;
3177 4317
… …
3181 4321
3182 if (!fs_2625) 4322 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs) 4324 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */ 4325 && (sfs.f_type == 0x1373 /* devfs */
4326 || sfs.f_type == 0x4006 /* fat */
4327 || sfs.f_type == 0x4d44 /* msdos */
3186 || sfs.f_type == 0xEF53 /* ext2/3 */ 4328 || sfs.f_type == 0xEF53 /* ext2/3 */
4329 || sfs.f_type == 0x72b6 /* jffs2 */
4330 || sfs.f_type == 0x858458f6 /* ramfs */
4331 || sfs.f_type == 0x5346544e /* ntfs */
3187 || sfs.f_type == 0x3153464a /* jfs */ 4332 || sfs.f_type == 0x3153464a /* jfs */
4333 || sfs.f_type == 0x9123683e /* btrfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */ 4334 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */ 4335 || sfs.f_type == 0x01021994 /* tmpfs */
3190 || sfs.f_type == 0x58465342 /* xfs */)) 4336 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4337 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else 4338 else
3193 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4339 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3194 } 4340 }
… …
3229 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3230 ev_timer_again (EV_A_ &w->timer); 4376 ev_timer_again (EV_A_ &w->timer);
3231 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4377 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3232} 4378}
3233 4379
3234static void noinline 4380noinline
4381static void
3235infy_del (EV_P_ ev_stat *w) 4382infy_del (EV_P_ ev_stat *w)
3236{ 4383{
3237 int slot; 4384 int slot;
3238 int wd = w->wd; 4385 int wd = w->wd;
3239 4386
… …
3246 4393
3247 /* remove this watcher, if others are watching it, they will rearm */ 4394 /* remove this watcher, if others are watching it, they will rearm */
3248 inotify_rm_watch (fs_fd, wd); 4395 inotify_rm_watch (fs_fd, wd);
3249} 4396}
3250 4397
3251static void noinline 4398noinline
4399static void
3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4400infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3253{ 4401{
3254 if (slot < 0) 4402 if (slot < 0)
3255 /* overflow, need to check for all hash slots */ 4403 /* overflow, need to check for all hash slots */
3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4404 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3292 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4440 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3293 ofs += sizeof (struct inotify_event) + ev->len; 4441 ofs += sizeof (struct inotify_event) + ev->len;
3294 } 4442 }
3295} 4443}
3296 4444
3297inline_size void ecb_cold 4445inline_size ecb_cold
4446void
3298ev_check_2625 (EV_P) 4447ev_check_2625 (EV_P)
3299{ 4448{
3300 /* kernels < 2.6.25 are borked 4449 /* kernels < 2.6.25 are borked
3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4450 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3302 */ 4451 */
… …
3307} 4456}
3308 4457
3309inline_size int 4458inline_size int
3310infy_newfd (void) 4459infy_newfd (void)
3311{ 4460{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4461#if defined IN_CLOEXEC && defined IN_NONBLOCK
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4462 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0) 4463 if (fd >= 0)
3315 return fd; 4464 return fd;
3316#endif 4465#endif
3317 return inotify_init (); 4466 return inotify_init ();
… …
3392#else 4541#else
3393# define EV_LSTAT(p,b) lstat (p, b) 4542# define EV_LSTAT(p,b) lstat (p, b)
3394#endif 4543#endif
3395 4544
3396void 4545void
3397ev_stat_stat (EV_P_ ev_stat *w) 4546ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3398{ 4547{
3399 if (lstat (w->path, &w->attr) < 0) 4548 if (lstat (w->path, &w->attr) < 0)
3400 w->attr.st_nlink = 0; 4549 w->attr.st_nlink = 0;
3401 else if (!w->attr.st_nlink) 4550 else if (!w->attr.st_nlink)
3402 w->attr.st_nlink = 1; 4551 w->attr.st_nlink = 1;
3403} 4552}
3404 4553
3405static void noinline 4554noinline
4555static void
3406stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4556stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3407{ 4557{
3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4558 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3409 4559
3410 ev_statdata prev = w->attr; 4560 ev_statdata prev = w->attr;
… …
3441 ev_feed_event (EV_A_ w, EV_STAT); 4591 ev_feed_event (EV_A_ w, EV_STAT);
3442 } 4592 }
3443} 4593}
3444 4594
3445void 4595void
3446ev_stat_start (EV_P_ ev_stat *w) 4596ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3447{ 4597{
3448 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3449 return; 4599 return;
3450 4600
3451 ev_stat_stat (EV_A_ w); 4601 ev_stat_stat (EV_A_ w);
… …
3472 4622
3473 EV_FREQUENT_CHECK; 4623 EV_FREQUENT_CHECK;
3474} 4624}
3475 4625
3476void 4626void
3477ev_stat_stop (EV_P_ ev_stat *w) 4627ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3478{ 4628{
3479 clear_pending (EV_A_ (W)w); 4629 clear_pending (EV_A_ (W)w);
3480 if (expect_false (!ev_is_active (w))) 4630 if (expect_false (!ev_is_active (w)))
3481 return; 4631 return;
3482 4632
… …
3498} 4648}
3499#endif 4649#endif
3500 4650
3501#if EV_IDLE_ENABLE 4651#if EV_IDLE_ENABLE
3502void 4652void
3503ev_idle_start (EV_P_ ev_idle *w) 4653ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3504{ 4654{
3505 if (expect_false (ev_is_active (w))) 4655 if (expect_false (ev_is_active (w)))
3506 return; 4656 return;
3507 4657
3508 pri_adjust (EV_A_ (W)w); 4658 pri_adjust (EV_A_ (W)w);
… …
3513 int active = ++idlecnt [ABSPRI (w)]; 4663 int active = ++idlecnt [ABSPRI (w)];
3514 4664
3515 ++idleall; 4665 ++idleall;
3516 ev_start (EV_A_ (W)w, active); 4666 ev_start (EV_A_ (W)w, active);
3517 4667
3518 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4668 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3519 idles [ABSPRI (w)][active - 1] = w; 4669 idles [ABSPRI (w)][active - 1] = w;
3520 } 4670 }
3521 4671
3522 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3523} 4673}
3524 4674
3525void 4675void
3526ev_idle_stop (EV_P_ ev_idle *w) 4676ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3527{ 4677{
3528 clear_pending (EV_A_ (W)w); 4678 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4679 if (expect_false (!ev_is_active (w)))
3530 return; 4680 return;
3531 4681
… …
3545} 4695}
3546#endif 4696#endif
3547 4697
3548#if EV_PREPARE_ENABLE 4698#if EV_PREPARE_ENABLE
3549void 4699void
3550ev_prepare_start (EV_P_ ev_prepare *w) 4700ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3551{ 4701{
3552 if (expect_false (ev_is_active (w))) 4702 if (expect_false (ev_is_active (w)))
3553 return; 4703 return;
3554 4704
3555 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
3556 4706
3557 ev_start (EV_A_ (W)w, ++preparecnt); 4707 ev_start (EV_A_ (W)w, ++preparecnt);
3558 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4708 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3559 prepares [preparecnt - 1] = w; 4709 prepares [preparecnt - 1] = w;
3560 4710
3561 EV_FREQUENT_CHECK; 4711 EV_FREQUENT_CHECK;
3562} 4712}
3563 4713
3564void 4714void
3565ev_prepare_stop (EV_P_ ev_prepare *w) 4715ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3566{ 4716{
3567 clear_pending (EV_A_ (W)w); 4717 clear_pending (EV_A_ (W)w);
3568 if (expect_false (!ev_is_active (w))) 4718 if (expect_false (!ev_is_active (w)))
3569 return; 4719 return;
3570 4720
… …
3583} 4733}
3584#endif 4734#endif
3585 4735
3586#if EV_CHECK_ENABLE 4736#if EV_CHECK_ENABLE
3587void 4737void
3588ev_check_start (EV_P_ ev_check *w) 4738ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3589{ 4739{
3590 if (expect_false (ev_is_active (w))) 4740 if (expect_false (ev_is_active (w)))
3591 return; 4741 return;
3592 4742
3593 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
3594 4744
3595 ev_start (EV_A_ (W)w, ++checkcnt); 4745 ev_start (EV_A_ (W)w, ++checkcnt);
3596 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4746 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3597 checks [checkcnt - 1] = w; 4747 checks [checkcnt - 1] = w;
3598 4748
3599 EV_FREQUENT_CHECK; 4749 EV_FREQUENT_CHECK;
3600} 4750}
3601 4751
3602void 4752void
3603ev_check_stop (EV_P_ ev_check *w) 4753ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3604{ 4754{
3605 clear_pending (EV_A_ (W)w); 4755 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w))) 4756 if (expect_false (!ev_is_active (w)))
3607 return; 4757 return;
3608 4758
… …
3620 EV_FREQUENT_CHECK; 4770 EV_FREQUENT_CHECK;
3621} 4771}
3622#endif 4772#endif
3623 4773
3624#if EV_EMBED_ENABLE 4774#if EV_EMBED_ENABLE
3625void noinline 4775noinline
4776void
3626ev_embed_sweep (EV_P_ ev_embed *w) 4777ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3627{ 4778{
3628 ev_run (w->other, EVRUN_NOWAIT); 4779 ev_run (w->other, EVRUN_NOWAIT);
3629} 4780}
3630 4781
3631static void 4782static void
… …
3679 ev_idle_stop (EV_A_ idle); 4830 ev_idle_stop (EV_A_ idle);
3680} 4831}
3681#endif 4832#endif
3682 4833
3683void 4834void
3684ev_embed_start (EV_P_ ev_embed *w) 4835ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3685{ 4836{
3686 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3687 return; 4838 return;
3688 4839
3689 { 4840 {
… …
3710 4861
3711 EV_FREQUENT_CHECK; 4862 EV_FREQUENT_CHECK;
3712} 4863}
3713 4864
3714void 4865void
3715ev_embed_stop (EV_P_ ev_embed *w) 4866ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3716{ 4867{
3717 clear_pending (EV_A_ (W)w); 4868 clear_pending (EV_A_ (W)w);
3718 if (expect_false (!ev_is_active (w))) 4869 if (expect_false (!ev_is_active (w)))
3719 return; 4870 return;
3720 4871
… …
3730} 4881}
3731#endif 4882#endif
3732 4883
3733#if EV_FORK_ENABLE 4884#if EV_FORK_ENABLE
3734void 4885void
3735ev_fork_start (EV_P_ ev_fork *w) 4886ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3736{ 4887{
3737 if (expect_false (ev_is_active (w))) 4888 if (expect_false (ev_is_active (w)))
3738 return; 4889 return;
3739 4890
3740 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
3741 4892
3742 ev_start (EV_A_ (W)w, ++forkcnt); 4893 ev_start (EV_A_ (W)w, ++forkcnt);
3743 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4894 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3744 forks [forkcnt - 1] = w; 4895 forks [forkcnt - 1] = w;
3745 4896
3746 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
3747} 4898}
3748 4899
3749void 4900void
3750ev_fork_stop (EV_P_ ev_fork *w) 4901ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3751{ 4902{
3752 clear_pending (EV_A_ (W)w); 4903 clear_pending (EV_A_ (W)w);
3753 if (expect_false (!ev_is_active (w))) 4904 if (expect_false (!ev_is_active (w)))
3754 return; 4905 return;
3755 4906
… …
3768} 4919}
3769#endif 4920#endif
3770 4921
3771#if EV_CLEANUP_ENABLE 4922#if EV_CLEANUP_ENABLE
3772void 4923void
3773ev_cleanup_start (EV_P_ ev_cleanup *w) 4924ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3774{ 4925{
3775 if (expect_false (ev_is_active (w))) 4926 if (expect_false (ev_is_active (w)))
3776 return; 4927 return;
3777 4928
3778 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3779 4930
3780 ev_start (EV_A_ (W)w, ++cleanupcnt); 4931 ev_start (EV_A_ (W)w, ++cleanupcnt);
3781 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4932 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3782 cleanups [cleanupcnt - 1] = w; 4933 cleanups [cleanupcnt - 1] = w;
3783 4934
3784 /* cleanup watchers should never keep a refcount on the loop */ 4935 /* cleanup watchers should never keep a refcount on the loop */
3785 ev_unref (EV_A); 4936 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
3787} 4938}
3788 4939
3789void 4940void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w) 4941ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3791{ 4942{
3792 clear_pending (EV_A_ (W)w); 4943 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w))) 4944 if (expect_false (!ev_is_active (w)))
3794 return; 4945 return;
3795 4946
… …
3809} 4960}
3810#endif 4961#endif
3811 4962
3812#if EV_ASYNC_ENABLE 4963#if EV_ASYNC_ENABLE
3813void 4964void
3814ev_async_start (EV_P_ ev_async *w) 4965ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3815{ 4966{
3816 if (expect_false (ev_is_active (w))) 4967 if (expect_false (ev_is_active (w)))
3817 return; 4968 return;
3818 4969
3819 w->sent = 0; 4970 w->sent = 0;
… …
3821 evpipe_init (EV_A); 4972 evpipe_init (EV_A);
3822 4973
3823 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
3824 4975
3825 ev_start (EV_A_ (W)w, ++asynccnt); 4976 ev_start (EV_A_ (W)w, ++asynccnt);
3826 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4977 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3827 asyncs [asynccnt - 1] = w; 4978 asyncs [asynccnt - 1] = w;
3828 4979
3829 EV_FREQUENT_CHECK; 4980 EV_FREQUENT_CHECK;
3830} 4981}
3831 4982
3832void 4983void
3833ev_async_stop (EV_P_ ev_async *w) 4984ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3834{ 4985{
3835 clear_pending (EV_A_ (W)w); 4986 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4987 if (expect_false (!ev_is_active (w)))
3837 return; 4988 return;
3838 4989
… …
3849 5000
3850 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
3851} 5002}
3852 5003
3853void 5004void
3854ev_async_send (EV_P_ ev_async *w) 5005ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3855{ 5006{
3856 w->sent = 1; 5007 w->sent = 1;
3857 evpipe_write (EV_A_ &async_pending); 5008 evpipe_write (EV_A_ &async_pending);
3858} 5009}
3859#endif 5010#endif
… …
3896 5047
3897 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5048 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3898} 5049}
3899 5050
3900void 5051void
3901ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5052ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3902{ 5053{
3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5054 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3904
3905 if (expect_false (!once))
3906 {
3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3908 return;
3909 }
3910 5055
3911 once->cb = cb; 5056 once->cb = cb;
3912 once->arg = arg; 5057 once->arg = arg;
3913 5058
3914 ev_init (&once->io, once_cb_io); 5059 ev_init (&once->io, once_cb_io);
… …
3927} 5072}
3928 5073
3929/*****************************************************************************/ 5074/*****************************************************************************/
3930 5075
3931#if EV_WALK_ENABLE 5076#if EV_WALK_ENABLE
3932void ecb_cold 5077ecb_cold
5078void
3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5079ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3934{ 5080{
3935 int i, j; 5081 int i, j;
3936 ev_watcher_list *wl, *wn; 5082 ev_watcher_list *wl, *wn;
3937 5083
3938 if (types & (EV_IO | EV_EMBED)) 5084 if (types & (EV_IO | EV_EMBED))
… …
3981 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5127 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982#endif 5128#endif
3983 5129
3984#if EV_IDLE_ENABLE 5130#if EV_IDLE_ENABLE
3985 if (types & EV_IDLE) 5131 if (types & EV_IDLE)
3986 for (j = NUMPRI; i--; ) 5132 for (j = NUMPRI; j--; )
3987 for (i = idlecnt [j]; i--; ) 5133 for (i = idlecnt [j]; i--; )
3988 cb (EV_A_ EV_IDLE, idles [j][i]); 5134 cb (EV_A_ EV_IDLE, idles [j][i]);
3989#endif 5135#endif
3990 5136
3991#if EV_FORK_ENABLE 5137#if EV_FORK_ENABLE
… …
4044 5190
4045#if EV_MULTIPLICITY 5191#if EV_MULTIPLICITY
4046 #include "ev_wrap.h" 5192 #include "ev_wrap.h"
4047#endif 5193#endif
4048 5194
4049EV_CPP(})
4050

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