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Comparing libev/ev.c (file contents):
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 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 0x00010006
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 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
484 #endif 739 #endif
485#endif 740#endif
486 741
487#if __cplusplus 742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
488 #define ecb_inline static inline 828 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
491#elif ECB_C99 831#elif ECB_C99
492 #define ecb_inline static inline 832 #define ecb_inline static inline
493#else 833#else
494 #define ecb_inline static 834 #define ecb_inline static
495#endif 835#endif
496 836
497#if ECB_GCC_VERSION(3,1) 837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
498 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else 879#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) 880 #define ecb_prefetch(addr,rw,locality)
507#endif 881#endif
508 882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
509#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
511#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
514 927
515#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
525/* put around conditional expressions if you are very sure that the */ 938/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 939/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 940/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */ 943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
531 946
532#define expect_false(cond) ecb_expect_false (cond) 947/* count trailing zero bits and count # of one bits */
533#define expect_true(cond) ecb_expect_true (cond) 948#if ECB_GCC_VERSION(3,4) \
534#define noinline ecb_noinline 949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
535 1554
536#define inline_size ecb_inline 1555#define inline_size ecb_inline
537 1556
538#if EV_FEATURE_CODE 1557#if EV_FEATURE_CODE
539# define inline_speed ecb_inline 1558# define inline_speed ecb_inline
540#else 1559#else
541# define inline_speed static noinline 1560# define inline_speed ecb_noinline static
542#endif 1561#endif
543 1562
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545 1564
546#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
548#else 1567#else
549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif 1569#endif
551 1570
552#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
553#define EMPTY2(a,b) /* used to suppress some warnings */
554 1572
555typedef ev_watcher *W; 1573typedef ev_watcher *W;
556typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
557typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
558 1576
… …
583# include "ev_win32.c" 1601# include "ev_win32.c"
584#endif 1602#endif
585 1603
586/*****************************************************************************/ 1604/*****************************************************************************/
587 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
588/* define a suitable floor function (only used by periodics atm) */ 1610/* define a suitable floor function (only used by periodics atm) */
589 1611
590#if EV_USE_FLOOR 1612#if EV_USE_FLOOR
591# include <math.h> 1613# include <math.h>
592# define ev_floor(v) floor (v) 1614# define ev_floor(v) floor (v)
593#else 1615#else
594 1616
595#include <float.h> 1617#include <float.h>
596 1618
597/* a floor() replacement function, should be independent of ev_tstamp type */ 1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
598static ev_tstamp noinline 1621static ev_tstamp
599ev_floor (ev_tstamp v) 1622ev_floor (ev_tstamp v)
600{ 1623{
601 /* the choice of shift factor is not terribly important */ 1624 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else 1627#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif 1629#endif
607 1630
608 /* argument too large for an unsigned long? */ 1631 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift)) 1632 if (ecb_expect_false (v >= shift))
610 { 1633 {
611 ev_tstamp f; 1634 ev_tstamp f;
612 1635
613 if (v == v - 1.) 1636 if (v == v - 1.)
614 return v; /* very large number */ 1637 return v; /* very large number */
… …
616 f = shift * ev_floor (v * (1. / shift)); 1639 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f); 1640 return f + ev_floor (v - f);
618 } 1641 }
619 1642
620 /* special treatment for negative args? */ 1643 /* special treatment for negative args? */
621 if (expect_false (v < 0.)) 1644 if (ecb_expect_false (v < 0.))
622 { 1645 {
623 ev_tstamp f = -ev_floor (-v); 1646 ev_tstamp f = -ev_floor (-v);
624 1647
625 return f - (f == v ? 0 : 1); 1648 return f - (f == v ? 0 : 1);
626 } 1649 }
… …
635 1658
636#ifdef __linux 1659#ifdef __linux
637# include <sys/utsname.h> 1660# include <sys/utsname.h>
638#endif 1661#endif
639 1662
640static unsigned int noinline ecb_cold 1663ecb_noinline ecb_cold
1664static unsigned int
641ev_linux_version (void) 1665ev_linux_version (void)
642{ 1666{
643#ifdef __linux 1667#ifdef __linux
644 unsigned int v = 0; 1668 unsigned int v = 0;
645 struct utsname buf; 1669 struct utsname buf;
… …
674} 1698}
675 1699
676/*****************************************************************************/ 1700/*****************************************************************************/
677 1701
678#if EV_AVOID_STDIO 1702#if EV_AVOID_STDIO
679static void noinline ecb_cold 1703ecb_noinline ecb_cold
1704static void
680ev_printerr (const char *msg) 1705ev_printerr (const char *msg)
681{ 1706{
682 write (STDERR_FILENO, msg, strlen (msg)); 1707 write (STDERR_FILENO, msg, strlen (msg));
683} 1708}
684#endif 1709#endif
685 1710
686static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
687 1712
688void ecb_cold 1713ecb_cold
1714void
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
690{ 1716{
691 syserr_cb = cb; 1717 syserr_cb = cb;
692} 1718}
693 1719
694static void noinline ecb_cold 1720ecb_noinline ecb_cold
1721static void
695ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
696{ 1723{
697 if (!msg) 1724 if (!msg)
698 msg = "(libev) system error"; 1725 msg = "(libev) system error";
699 1726
… …
712 abort (); 1739 abort ();
713 } 1740 }
714} 1741}
715 1742
716static void * 1743static void *
717ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
718{ 1745{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
722 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
723 * implement realloc (x, 0) (as required by both ansi c-89 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
724 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
725 */ 1751 */
726 1752
727 if (size) 1753 if (size)
728 return realloc (ptr, size); 1754 return realloc (ptr, size);
729 1755
730 free (ptr); 1756 free (ptr);
731 return 0; 1757 return 0;
732#endif
733} 1758}
734 1759
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
736 1761
737void ecb_cold 1762ecb_cold
1763void
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
739{ 1765{
740 alloc = cb; 1766 alloc = cb;
741} 1767}
742 1768
743inline_speed void * 1769inline_speed void *
… …
770typedef struct 1796typedef struct
771{ 1797{
772 WL head; 1798 WL head;
773 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1800 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 */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
776 unsigned char unused; 1802 unsigned char unused;
777#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif 1805#endif
780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
831 #undef VAR 1857 #undef VAR
832 }; 1858 };
833 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
834 1860
835 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
836 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837 1863
838#else 1864#else
839 1865
840 ev_tstamp ev_rt_now; 1866 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; 1867 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1868 #include "ev_vars.h"
843 #undef VAR 1869 #undef VAR
844 1870
845 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
846 1872
847#endif 1873#endif
848 1874
849#if EV_FEATURE_API 1875#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else 1879#else
854# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
860 1886
861/*****************************************************************************/ 1887/*****************************************************************************/
862 1888
863#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1890ev_tstamp
865ev_time (void) 1891ev_time (void) EV_NOEXCEPT
866{ 1892{
867#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
869 { 1895 {
870 struct timespec ts; 1896 struct timespec ts;
871 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
872 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
873 } 1899 }
… …
881 1907
882inline_size ev_tstamp 1908inline_size ev_tstamp
883get_clock (void) 1909get_clock (void)
884{ 1910{
885#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
886 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
887 { 1913 {
888 struct timespec ts; 1914 struct timespec ts;
889 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
890 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
891 } 1917 }
… …
894 return ev_time (); 1920 return ev_time ();
895} 1921}
896 1922
897#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
898ev_tstamp 1924ev_tstamp
899ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
900{ 1926{
901 return ev_rt_now; 1927 return ev_rt_now;
902} 1928}
903#endif 1929#endif
904 1930
905void 1931void
906ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
907{ 1933{
908 if (delay > 0.) 1934 if (delay > 0.)
909 { 1935 {
910#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
911 struct timespec ts; 1937 struct timespec ts;
912 1938
913 EV_TS_SET (ts, delay); 1939 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
915#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
916 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
917#else 1945#else
918 struct timeval tv; 1946 struct timeval tv;
919 1947
920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
939 1967
940 do 1968 do
941 ncur <<= 1; 1969 ncur <<= 1;
942 while (cnt > ncur); 1970 while (cnt > ncur);
943 1971
944 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1972 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 1974 {
947 ncur *= elem; 1975 ncur *= elem;
948 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1976 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
951 } 1979 }
952 1980
953 return ncur; 1981 return ncur;
954} 1982}
955 1983
956static void * noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void *
957array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
958{ 1987{
959 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
960 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
961} 1990}
962 1991
1992#define array_needsize_noinit(base,offset,count)
1993
963#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
965 1996
966#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
968 { \ 1999 { \
969 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
973 } 2004 }
974 2005
975#if 0 2006#if 0
976#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 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 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
987 2018
988/*****************************************************************************/ 2019/*****************************************************************************/
989 2020
990/* dummy callback for pending events */ 2021/* dummy callback for pending events */
991static void noinline 2022ecb_noinline
2023static void
992pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 2025{
994} 2026}
995 2027
996void noinline 2028ecb_noinline
2029void
997ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
998{ 2031{
999 W w_ = (W)w; 2032 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
1001 2034
1002 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
1003 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
1004 else 2037 else
1005 { 2038 {
1006 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1008 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
1010 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
1011} 2046}
1012 2047
1013inline_speed void 2048inline_speed void
1014feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
1015{ 2050{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1017 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
1018} 2053}
1019 2054
1020inline_size void 2055inline_size void
1021feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
1056inline_speed void 2091inline_speed void
1057fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
1058{ 2093{
1059 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
1060 2095
1061 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
1063} 2098}
1064 2099
1065void 2100void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1067{ 2102{
1068 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
1070} 2105}
1071 2106
… …
1108 ev_io *w; 2143 ev_io *w;
1109 2144
1110 unsigned char o_events = anfd->events; 2145 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify; 2146 unsigned char o_reify = anfd->reify;
1112 2147
1113 anfd->reify = 0; 2148 anfd->reify = 0;
1114 2149
1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1116 { 2151 {
1117 anfd->events = 0; 2152 anfd->events = 0;
1118 2153
1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1120 anfd->events |= (unsigned char)w->events; 2155 anfd->events |= (unsigned char)w->events;
… …
1129 2164
1130 fdchangecnt = 0; 2165 fdchangecnt = 0;
1131} 2166}
1132 2167
1133/* something about the given fd changed */ 2168/* something about the given fd changed */
1134inline_size void 2169inline_size
2170void
1135fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
1136{ 2172{
1137 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
1138 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
1139 2175
1140 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
1141 { 2177 {
1142 ++fdchangecnt; 2178 ++fdchangecnt;
1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1144 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
1145 } 2181 }
1146} 2182}
1147 2183
1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold 2185inline_speed ecb_cold void
1150fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
1151{ 2187{
1152 ev_io *w; 2188 ev_io *w;
1153 2189
1154 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1158 } 2194 }
1159} 2195}
1160 2196
1161/* check whether the given fd is actually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold 2198inline_size ecb_cold int
1163fd_valid (int fd) 2199fd_valid (int fd)
1164{ 2200{
1165#ifdef _WIN32 2201#ifdef _WIN32
1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1167#else 2203#else
1168 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
1169#endif 2205#endif
1170} 2206}
1171 2207
1172/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
1173static void noinline ecb_cold 2209ecb_noinline ecb_cold
2210static void
1174fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
1175{ 2212{
1176 int fd; 2213 int fd;
1177 2214
1178 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1180 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
1181 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
1182} 2219}
1183 2220
1184/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
1185static void noinline ecb_cold 2222ecb_noinline ecb_cold
2223static void
1186fd_enomem (EV_P) 2224fd_enomem (EV_P)
1187{ 2225{
1188 int fd; 2226 int fd;
1189 2227
1190 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
1194 break; 2232 break;
1195 } 2233 }
1196} 2234}
1197 2235
1198/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
1199static void noinline 2237ecb_noinline
2238static void
1200fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
1201{ 2240{
1202 int fd; 2241 int fd;
1203 2242
1204 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
1257 ev_tstamp minat; 2296 ev_tstamp minat;
1258 ANHE *minpos; 2297 ANHE *minpos;
1259 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1260 2299
1261 /* find minimum child */ 2300 /* find minimum child */
1262 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1263 { 2302 {
1264 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1265 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1266 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1267 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1385 2424
1386/*****************************************************************************/ 2425/*****************************************************************************/
1387 2426
1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1389 2428
1390static void noinline ecb_cold 2429ecb_noinline ecb_cold
2430static void
1391evpipe_init (EV_P) 2431evpipe_init (EV_P)
1392{ 2432{
1393 if (!ev_is_active (&pipe_w)) 2433 if (!ev_is_active (&pipe_w))
1394 { 2434 {
2435 int fds [2];
2436
1395# if EV_USE_EVENTFD 2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL) 2440 if (fds [1] < 0 && errno == EINVAL)
1398 evfd = eventfd (0, 0); 2441 fds [1] = eventfd (0, 0);
1399 2442
1400 if (evfd >= 0) 2443 if (fds [1] < 0)
2444# endif
1401 { 2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
1402 evpipe [0] = -1; 2452 evpipe [0] = fds [0];
1403 fd_intern (evfd); /* doing it twice doesn't hurt */ 2453
1404 ev_io_set (&pipe_w, evfd, EV_READ); 2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
2472 }
2473}
2474
2475inline_speed void
2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2477{
2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2479
2480 if (ecb_expect_true (*flag))
2481 return;
2482
2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
2499#if EV_USE_EVENTFD
2500 if (evpipe [0] < 0)
2501 {
2502 uint64_t counter = 1;
2503 write (evpipe [1], &counter, sizeof (uint64_t));
1405 } 2504 }
1406 else 2505 else
1407# endif 2506#endif
1408 { 2507 {
1409 while (pipe (evpipe)) 2508#ifdef _WIN32
1410 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1411 2510 DWORD sent;
1412 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1413 fd_intern (evpipe [1]); 2512 buf.len = 1;
1414 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2514#else
2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1415 } 2517 }
1416 2518
1417 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 }
1420}
1421
1422inline_speed 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;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno; 2519 errno = old_errno;
1457 }
1458 } 2520 }
1459} 2521}
1460 2522
1461/* called whenever the libev signal pipe */ 2523/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */ 2524/* got some events (signal, async) */
… …
1466 int i; 2528 int i;
1467 2529
1468 if (revents & EV_READ) 2530 if (revents & EV_READ)
1469 { 2531 {
1470#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1471 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1472 { 2534 {
1473 uint64_t counter; 2535 uint64_t counter;
1474 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1475 } 2537 }
1476 else 2538 else
1477#endif 2539#endif
1478 { 2540 {
1479 char dummy; 2541 char dummy[4];
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1481 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
1482 } 2552 }
1483 } 2553 }
1484 2554
1485 pipe_write_skipped = 0; 2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1486 2558
1487#if EV_SIGNAL_ENABLE 2559#if EV_SIGNAL_ENABLE
1488 if (sig_pending) 2560 if (sig_pending)
1489 { 2561 {
1490 sig_pending = 0; 2562 sig_pending = 0;
1491 2563
2564 ECB_MEMORY_FENCE;
2565
1492 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1493 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1494 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1495 } 2569 }
1496#endif 2570#endif
1497 2571
1498#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1499 if (async_pending) 2573 if (async_pending)
1500 { 2574 {
1501 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1502 2578
1503 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1504 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1505 { 2581 {
1506 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1507 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1508 } 2585 }
1509 } 2586 }
1510#endif 2587#endif
1511} 2588}
1512 2589
1513/*****************************************************************************/ 2590/*****************************************************************************/
1514 2591
1515void 2592void
1516ev_feed_signal (int signum) 2593ev_feed_signal (int signum) EV_NOEXCEPT
1517{ 2594{
1518#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
1519 EV_P = signals [signum - 1].loop; 2598 EV_A = signals [signum - 1].loop;
1520 2599
1521 if (!EV_A) 2600 if (!EV_A)
1522 return; 2601 return;
1523#endif 2602#endif
1524 2603
1525 evpipe_init (EV_A);
1526
1527 signals [signum - 1].pending = 1; 2604 signals [signum - 1].pending = 1;
1528 evpipe_write (EV_A_ &sig_pending); 2605 evpipe_write (EV_A_ &sig_pending);
1529} 2606}
1530 2607
1531static void 2608static void
… …
1536#endif 2613#endif
1537 2614
1538 ev_feed_signal (signum); 2615 ev_feed_signal (signum);
1539} 2616}
1540 2617
1541void noinline 2618ecb_noinline
2619void
1542ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1543{ 2621{
1544 WL w; 2622 WL w;
1545 2623
1546 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1547 return; 2625 return;
1548 2626
1549 --signum; 2627 --signum;
1550 2628
1551#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1552 /* it is permissible to try to feed a signal to the wrong loop */ 2630 /* it is permissible to try to feed a signal to the wrong loop */
1553 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1554 2632
1555 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1556 return; 2634 return;
1557#endif 2635#endif
1558 2636
1559 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1560 2639
1561 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1562 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1563} 2642}
1564 2643
… …
1655# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1656#endif 2735#endif
1657#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1658# include "ev_epoll.c" 2737# include "ev_epoll.c"
1659#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1660#if EV_USE_POLL 2742#if EV_USE_POLL
1661# include "ev_poll.c" 2743# include "ev_poll.c"
1662#endif 2744#endif
1663#if EV_USE_SELECT 2745#if EV_USE_SELECT
1664# include "ev_select.c" 2746# include "ev_select.c"
1665#endif 2747#endif
1666 2748
1667int ecb_cold 2749ecb_cold int
1668ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1669{ 2751{
1670 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1671} 2753}
1672 2754
1673int ecb_cold 2755ecb_cold int
1674ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1675{ 2757{
1676 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1677} 2759}
1678 2760
1679/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
1680int inline_size ecb_cold 2762inline_size ecb_cold int
1681enable_secure (void) 2763enable_secure (void)
1682{ 2764{
1683#ifdef _WIN32 2765#ifdef _WIN32
1684 return 0; 2766 return 0;
1685#else 2767#else
1686 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1687 || getgid () != getegid (); 2769 || getgid () != getegid ();
1688#endif 2770#endif
1689} 2771}
1690 2772
1691unsigned int ecb_cold 2773ecb_cold
2774unsigned int
1692ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1693{ 2776{
1694 unsigned int flags = 0; 2777 unsigned int flags = 0;
1695 2778
1696 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1697 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1698 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1699 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1700 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1701 2785
1702 return flags; 2786 return flags;
1703} 2787}
1704 2788
1705unsigned int ecb_cold 2789ecb_cold
2790unsigned int
1706ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1707{ 2792{
1708 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1709 2794
1710#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1711 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1719#endif 2804#endif
1720#ifdef __FreeBSD__ 2805#ifdef __FreeBSD__
1721 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1722#endif 2807#endif
1723 2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
2811 flags &= ~EVBACKEND_LINUXAIO;
2812#endif
2813
1724 return flags; 2814 return flags;
1725} 2815}
1726 2816
1727unsigned int ecb_cold 2817ecb_cold
2818unsigned int
1728ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1729{ 2820{
1730 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1731 2822
1732 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1733 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1735 2826
1736 return flags; 2827 return flags;
1737} 2828}
1738 2829
1739unsigned int 2830unsigned int
1740ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1741{ 2832{
1742 return backend; 2833 return backend;
1743} 2834}
1744 2835
1745#if EV_FEATURE_API 2836#if EV_FEATURE_API
1746unsigned int 2837unsigned int
1747ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1748{ 2839{
1749 return loop_count; 2840 return loop_count;
1750} 2841}
1751 2842
1752unsigned int 2843unsigned int
1753ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1754{ 2845{
1755 return loop_depth; 2846 return loop_depth;
1756} 2847}
1757 2848
1758void 2849void
1759ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1760{ 2851{
1761 io_blocktime = interval; 2852 io_blocktime = interval;
1762} 2853}
1763 2854
1764void 2855void
1765ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1766{ 2857{
1767 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1768} 2859}
1769 2860
1770void 2861void
1771ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1772{ 2863{
1773 userdata = data; 2864 userdata = data;
1774} 2865}
1775 2866
1776void * 2867void *
1777ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1778{ 2869{
1779 return userdata; 2870 return userdata;
1780} 2871}
1781 2872
1782void 2873void
1783ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1784{ 2875{
1785 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1786} 2877}
1787 2878
1788void 2879void
1789ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1790{ 2881{
1791 release_cb = release; 2882 release_cb = release;
1792 acquire_cb = acquire; 2883 acquire_cb = acquire;
1793} 2884}
1794#endif 2885#endif
1795 2886
1796/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1797static void noinline ecb_cold 2888ecb_noinline ecb_cold
2889static void
1798loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1799{ 2891{
1800 if (!backend) 2892 if (!backend)
1801 { 2893 {
1802 origflags = flags; 2894 origflags = flags;
1803 2895
… …
1848#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1849 async_pending = 0; 2941 async_pending = 0;
1850#endif 2942#endif
1851 pipe_write_skipped = 0; 2943 pipe_write_skipped = 0;
1852 pipe_write_wanted = 0; 2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1853#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1854 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1855#endif 2949#endif
1856#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1857 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1859 2953
1860 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
1861 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1862 2956
1863#if EV_USE_IOCP 2957#if EV_USE_IOCP
1864 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1865#endif 2959#endif
1866#if EV_USE_PORT 2960#if EV_USE_PORT
1867 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1868#endif 2962#endif
1869#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1870 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1871#endif 2968#endif
1872#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1873 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1874#endif 2971#endif
1875#if EV_USE_POLL 2972#if EV_USE_POLL
1876 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1877#endif 2974#endif
1878#if EV_USE_SELECT 2975#if EV_USE_SELECT
1879 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1880#endif 2977#endif
1881 2978
1882 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1883 2980
1884#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1887#endif 2984#endif
1888 } 2985 }
1889} 2986}
1890 2987
1891/* free up a loop structure */ 2988/* free up a loop structure */
1892void ecb_cold 2989ecb_cold
2990void
1893ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1894{ 2992{
1895 int i; 2993 int i;
1896 2994
1897#if EV_MULTIPLICITY 2995#if EV_MULTIPLICITY
… …
1900 return; 2998 return;
1901#endif 2999#endif
1902 3000
1903#if EV_CLEANUP_ENABLE 3001#if EV_CLEANUP_ENABLE
1904 /* queue cleanup watchers (and execute them) */ 3002 /* queue cleanup watchers (and execute them) */
1905 if (expect_false (cleanupcnt)) 3003 if (ecb_expect_false (cleanupcnt))
1906 { 3004 {
1907 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1908 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
1909 } 3007 }
1910#endif 3008#endif
1911 3009
1912#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
1913 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1914 { 3012 {
1915 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
1916 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
1917 } 3015 }
1918#endif 3016#endif
… …
1920 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1921 { 3019 {
1922 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1923 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1924 3022
1925#if EV_USE_EVENTFD
1926 if (evfd >= 0)
1927 close (evfd);
1928#endif
1929
1930 if (evpipe [0] >= 0)
1931 {
1932 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1933 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1934 }
1935 } 3025 }
1936 3026
1937#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1938 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1939 close (sigfd); 3029 close (sigfd);
… …
1946 3036
1947 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1948 close (backend_fd); 3038 close (backend_fd);
1949 3039
1950#if EV_USE_IOCP 3040#if EV_USE_IOCP
1951 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1952#endif 3042#endif
1953#if EV_USE_PORT 3043#if EV_USE_PORT
1954 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1955#endif 3045#endif
1956#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1957 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1958#endif 3051#endif
1959#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1960 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1961#endif 3054#endif
1962#if EV_USE_POLL 3055#if EV_USE_POLL
1963 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1964#endif 3057#endif
1965#if EV_USE_SELECT 3058#if EV_USE_SELECT
1966 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1967#endif 3060#endif
1968 3061
1969 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1970 { 3063 {
1971 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
2013 3106
2014inline_size void 3107inline_size void
2015loop_fork (EV_P) 3108loop_fork (EV_P)
2016{ 3109{
2017#if EV_USE_PORT 3110#if EV_USE_PORT
2018 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2019#endif 3112#endif
2020#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
2021 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2022#endif 3118#endif
2023#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
2024 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2025#endif 3121#endif
2026#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
2027 infy_fork (EV_A); 3123 infy_fork (EV_A);
2028#endif 3124#endif
2029 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2030 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
2031 { 3128 {
2032 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2033 3130
2034 ev_ref (EV_A); 3131 ev_ref (EV_A);
2035 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
2036 3133
2037#if EV_USE_EVENTFD
2038 if (evfd >= 0)
2039 close (evfd);
2040#endif
2041
2042 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
2043 {
2044 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
2045 EV_WIN32_CLOSE_FD (evpipe [1]);
2046 }
2047 3136
2048#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2049 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
2050 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
2051 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2052#endif
2053 } 3140 }
3141#endif
2054 3142
2055 postfork = 0; 3143 postfork = 0;
2056} 3144}
2057 3145
2058#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
2059 3147
3148ecb_cold
2060struct ev_loop * ecb_cold 3149struct ev_loop *
2061ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
2062{ 3151{
2063 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2064 3153
2065 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
2066 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
2073} 3162}
2074 3163
2075#endif /* multiplicity */ 3164#endif /* multiplicity */
2076 3165
2077#if EV_VERIFY 3166#if EV_VERIFY
2078static void noinline ecb_cold 3167ecb_noinline ecb_cold
3168static void
2079verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
2080{ 3170{
2081 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2082 3172
2083 if (w->pending) 3173 if (w->pending)
2084 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2085} 3175}
2086 3176
2087static void noinline ecb_cold 3177ecb_noinline ecb_cold
3178static void
2088verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
2089{ 3180{
2090 int i; 3181 int i;
2091 3182
2092 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2097 3188
2098 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2099 } 3190 }
2100} 3191}
2101 3192
2102static void noinline ecb_cold 3193ecb_noinline ecb_cold
3194static void
2103array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
2104{ 3196{
2105 while (cnt--) 3197 while (cnt--)
2106 { 3198 {
2107 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2110} 3202}
2111#endif 3203#endif
2112 3204
2113#if EV_FEATURE_API 3205#if EV_FEATURE_API
2114void ecb_cold 3206void ecb_cold
2115ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2116{ 3208{
2117#if EV_VERIFY 3209#if EV_VERIFY
2118 int i; 3210 int i;
2119 WL w; 3211 WL w, w2;
2120 3212
2121 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2122 3214
2123 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2124 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2125 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2126 3218
2127 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2128 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2129 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2130 { 3225 {
2131 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
2132 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2133 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2134 } 3236 }
3237 }
2135 3238
2136 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2137 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2138 3241
2139#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2185#endif 3288#endif
2186} 3289}
2187#endif 3290#endif
2188 3291
2189#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2190struct ev_loop * ecb_cold 3294struct ev_loop *
2191#else 3295#else
2192int 3296int
2193#endif 3297#endif
2194ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2195{ 3299{
2196 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2197 { 3301 {
2198#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2199 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2218 3322
2219 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2220} 3324}
2221 3325
2222void 3326void
2223ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2224{ 3328{
2225 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2226} 3330}
2227 3331
2228/*****************************************************************************/ 3332/*****************************************************************************/
2229 3333
2230void 3334void
… …
2232{ 3336{
2233 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2234} 3338}
2235 3339
2236unsigned int 3340unsigned int
2237ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2238{ 3342{
2239 int pri; 3343 int pri;
2240 unsigned int count = 0; 3344 unsigned int count = 0;
2241 3345
2242 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2243 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2244 3348
2245 return count; 3349 return count;
2246} 3350}
2247 3351
2248void noinline 3352ecb_noinline
3353void
2249ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2250{ 3355{
2251 int pri; 3356 pendingpri = NUMPRI;
2252 3357
2253 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2254 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2255 { 3364 {
2256 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2257 3366
2258 p->w->pending = 0; 3367 p->w->pending = 0;
2259 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2260 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2261 } 3370 }
3371 }
3372 while (pendingpri);
2262} 3373}
2263 3374
2264#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2265/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2266/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
2267inline_size void 3378inline_size void
2268idle_reify (EV_P) 3379idle_reify (EV_P)
2269{ 3380{
2270 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
2271 { 3382 {
2272 int pri; 3383 int pri;
2273 3384
2274 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
2275 { 3386 {
… …
2324 } 3435 }
2325} 3436}
2326 3437
2327#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2328 3439
2329static void noinline 3440ecb_noinline
3441static void
2330periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2331{ 3443{
2332 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2333 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2334 3446
… …
2336 while (at <= ev_rt_now) 3448 while (at <= ev_rt_now)
2337 { 3449 {
2338 ev_tstamp nat = at + w->interval; 3450 ev_tstamp nat = at + w->interval;
2339 3451
2340 /* when resolution fails us, we use ev_rt_now */ 3452 /* when resolution fails us, we use ev_rt_now */
2341 if (expect_false (nat == at)) 3453 if (ecb_expect_false (nat == at))
2342 { 3454 {
2343 at = ev_rt_now; 3455 at = ev_rt_now;
2344 break; 3456 break;
2345 } 3457 }
2346 3458
… …
2356{ 3468{
2357 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2358 3470
2359 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2360 { 3472 {
2361 int feed_count = 0;
2362
2363 do 3473 do
2364 { 3474 {
2365 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2366 3476
2367 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2394 } 3504 }
2395} 3505}
2396 3506
2397/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2398/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2399static void noinline ecb_cold 3509ecb_noinline ecb_cold
3510static void
2400periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2401{ 3512{
2402 int i; 3513 int i;
2403 3514
2404 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2417 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2418} 3529}
2419#endif 3530#endif
2420 3531
2421/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2422static void noinline ecb_cold 3533ecb_noinline ecb_cold
3534static void
2423timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2424{ 3536{
2425 int i; 3537 int i;
2426 3538
2427 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2436/* also detect if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2437inline_speed void 3549inline_speed void
2438time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2439{ 3551{
2440#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2441 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2442 { 3554 {
2443 int i; 3555 int i;
2444 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2445 3557
2446 mn_now = get_clock (); 3558 mn_now = get_clock ();
2447 3559
2448 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2449 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2450 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2451 { 3563 {
2452 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2453 return; 3565 return;
2454 } 3566 }
2455 3567
… …
2469 ev_tstamp diff; 3581 ev_tstamp diff;
2470 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2471 3583
2472 diff = odiff - rtmn_diff; 3584 diff = odiff - rtmn_diff;
2473 3585
2474 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2475 return; /* all is well */ 3587 return; /* all is well */
2476 3588
2477 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2478 mn_now = get_clock (); 3590 mn_now = get_clock ();
2479 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2488 else 3600 else
2489#endif 3601#endif
2490 { 3602 {
2491 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2492 3604
2493 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2494 { 3606 {
2495 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2496 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2497#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2498 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2501 3613
2502 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2503 } 3615 }
2504} 3616}
2505 3617
2506void 3618int
2507ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2508{ 3620{
2509#if EV_FEATURE_API 3621#if EV_FEATURE_API
2510 ++loop_depth; 3622 ++loop_depth;
2511#endif 3623#endif
… …
2521#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2522 ev_verify (EV_A); 3634 ev_verify (EV_A);
2523#endif 3635#endif
2524 3636
2525#ifndef _WIN32 3637#ifndef _WIN32
2526 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2527 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2528 { 3640 {
2529 curpid = getpid (); 3641 curpid = getpid ();
2530 postfork = 1; 3642 postfork = 1;
2531 } 3643 }
2532#endif 3644#endif
2533 3645
2534#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2535 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2536 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2537 if (forkcnt) 3649 if (forkcnt)
2538 { 3650 {
2539 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2540 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2541 } 3653 }
2542#endif 3654#endif
2543 3655
2544#if EV_PREPARE_ENABLE 3656#if EV_PREPARE_ENABLE
2545 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2546 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2547 { 3659 {
2548 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2549 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2550 } 3662 }
2551#endif 3663#endif
2552 3664
2553 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2554 break; 3666 break;
2555 3667
2556 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2557 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2558 loop_fork (EV_A); 3670 loop_fork (EV_A);
2559 3671
2560 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2561 fd_reify (EV_A); 3673 fd_reify (EV_A);
2562 3674
… …
2572 time_update (EV_A_ 1e100); 3684 time_update (EV_A_ 1e100);
2573 3685
2574 /* from now on, we want a pipe-wake-up */ 3686 /* from now on, we want a pipe-wake-up */
2575 pipe_write_wanted = 1; 3687 pipe_write_wanted = 1;
2576 3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2577 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2578 { 3692 {
2579 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2580 3694
2581 if (timercnt) 3695 if (timercnt)
2582 { 3696 {
… …
2591 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2592 } 3706 }
2593#endif 3707#endif
2594 3708
2595 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2596 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2597 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2598 3712
2599 /* at this point, we NEED to wait, so we have to ensure */ 3713 /* at this point, we NEED to wait, so we have to ensure */
2600 /* to pass a minimum nonzero value to the backend */ 3714 /* to pass a minimum nonzero value to the backend */
2601 if (expect_false (waittime < backend_mintime)) 3715 if (ecb_expect_false (waittime < backend_mintime))
2602 waittime = backend_mintime; 3716 waittime = backend_mintime;
2603 3717
2604 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2605 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2606 { 3720 {
2607 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2608 3722
2609 if (sleeptime > waittime - backend_mintime) 3723 if (sleeptime > waittime - backend_mintime)
2610 sleeptime = waittime - backend_mintime; 3724 sleeptime = waittime - backend_mintime;
2611 3725
2612 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2613 { 3727 {
2614 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2615 waittime -= sleeptime; 3729 waittime -= sleeptime;
2616 } 3730 }
2617 } 3731 }
… …
2622#endif 3736#endif
2623 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2624 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2625 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2626 3740
2627 pipe_write_wanted = 0; 3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2628 3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
2629 if (pipe_write_skipped) 3744 if (pipe_write_skipped)
2630 { 3745 {
2631 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2632 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2633 } 3748 }
2634 3749
2635
2636 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2637 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2638 } 3752 }
2639 3753
2640 /* queue pending timers and reschedule them */ 3754 /* queue pending timers and reschedule them */
… …
2648 idle_reify (EV_A); 3762 idle_reify (EV_A);
2649#endif 3763#endif
2650 3764
2651#if EV_CHECK_ENABLE 3765#if EV_CHECK_ENABLE
2652 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2653 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2655#endif 3769#endif
2656 3770
2657 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2658 } 3772 }
2659 while (expect_true ( 3773 while (ecb_expect_true (
2660 activecnt 3774 activecnt
2661 && !loop_done 3775 && !loop_done
2662 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2663 )); 3777 ));
2664 3778
… …
2666 loop_done = EVBREAK_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2667 3781
2668#if EV_FEATURE_API 3782#if EV_FEATURE_API
2669 --loop_depth; 3783 --loop_depth;
2670#endif 3784#endif
2671}
2672 3785
3786 return activecnt;
3787}
3788
2673void 3789void
2674ev_break (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2675{ 3791{
2676 loop_done = how; 3792 loop_done = how;
2677} 3793}
2678 3794
2679void 3795void
2680ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2681{ 3797{
2682 ++activecnt; 3798 ++activecnt;
2683} 3799}
2684 3800
2685void 3801void
2686ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2687{ 3803{
2688 --activecnt; 3804 --activecnt;
2689} 3805}
2690 3806
2691void 3807void
2692ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2693{ 3809{
2694 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2695} 3811}
2696 3812
2697void 3813void
2698ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2699{ 3815{
2700 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2701} 3817}
2702 3818
2703void 3819void
2704ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2705{ 3821{
2706 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2707 3823
2708 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2709 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2726inline_size void 3842inline_size void
2727wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2728{ 3844{
2729 while (*head) 3845 while (*head)
2730 { 3846 {
2731 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
2732 { 3848 {
2733 *head = elem->next; 3849 *head = elem->next;
2734 break; 3850 break;
2735 } 3851 }
2736 3852
… …
2748 w->pending = 0; 3864 w->pending = 0;
2749 } 3865 }
2750} 3866}
2751 3867
2752int 3868int
2753ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2754{ 3870{
2755 W w_ = (W)w; 3871 W w_ = (W)w;
2756 int pending = w_->pending; 3872 int pending = w_->pending;
2757 3873
2758 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2759 { 3875 {
2760 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2761 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2762 w_->pending = 0; 3878 w_->pending = 0;
2763 return p->events; 3879 return p->events;
… …
2790 w->active = 0; 3906 w->active = 0;
2791} 3907}
2792 3908
2793/*****************************************************************************/ 3909/*****************************************************************************/
2794 3910
2795void noinline 3911ecb_noinline
3912void
2796ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2797{ 3914{
2798 int fd = w->fd; 3915 int fd = w->fd;
2799 3916
2800 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2801 return; 3918 return;
2802 3919
2803 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2804 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2805 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2806 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2807 3927
2808 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2809 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2810 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));
2811 3934
2812 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);
2813 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2814 3937
2815 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2816} 3939}
2817 3940
2818void noinline 3941ecb_noinline
3942void
2819ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2820{ 3944{
2821 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2822 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2823 return; 3947 return;
2824 3948
2825 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2826 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2827 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2828 3955
2829 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2830 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2831 3958
2832 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2833 3960
2834 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2835} 3962}
2836 3963
2837void noinline 3964ecb_noinline
3965void
2838ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2839{ 3967{
2840 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2841 return; 3969 return;
2842 3970
2843 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2844 3972
2845 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2846 3974
2847 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2848 3976
2849 ++timercnt; 3977 ++timercnt;
2850 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2851 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2852 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2853 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2854 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2855 3983
2856 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2857 3985
2858 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2859} 3987}
2860 3988
2861void noinline 3989ecb_noinline
3990void
2862ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2863{ 3992{
2864 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2865 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2866 return; 3995 return;
2867 3996
2868 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2869 3998
2870 { 3999 {
… …
2872 4001
2873 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2874 4003
2875 --timercnt; 4004 --timercnt;
2876 4005
2877 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2878 { 4007 {
2879 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2880 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2881 } 4010 }
2882 } 4011 }
… …
2886 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2887 4016
2888 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2889} 4018}
2890 4019
2891void noinline 4020ecb_noinline
4021void
2892ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2893{ 4023{
2894 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2895 4027
2896 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2897 { 4029 {
2898 if (w->repeat) 4030 if (w->repeat)
2899 { 4031 {
… …
2912 4044
2913 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2914} 4046}
2915 4047
2916ev_tstamp 4048ev_tstamp
2917ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2918{ 4050{
2919 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2920} 4052}
2921 4053
2922#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2923void noinline 4055ecb_noinline
4056void
2924ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2925{ 4058{
2926 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2927 return; 4060 return;
2928 4061
2929 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2931 else if (w->interval) 4064 else if (w->interval)
… …
2938 4071
2939 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2940 4073
2941 ++periodiccnt; 4074 ++periodiccnt;
2942 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2943 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2944 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2945 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2946 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2947 4080
2948 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2949 4082
2950 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2951} 4084}
2952 4085
2953void noinline 4086ecb_noinline
4087void
2954ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2955{ 4089{
2956 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2957 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2958 return; 4092 return;
2959 4093
2960 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2961 4095
2962 { 4096 {
… …
2964 4098
2965 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2966 4100
2967 --periodiccnt; 4101 --periodiccnt;
2968 4102
2969 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2970 { 4104 {
2971 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2972 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2973 } 4107 }
2974 } 4108 }
… …
2976 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2977 4111
2978 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2979} 4113}
2980 4114
2981void noinline 4115ecb_noinline
4116void
2982ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2983{ 4118{
2984 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2985 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2986 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2987} 4122}
… …
2991# define SA_RESTART 0 4126# define SA_RESTART 0
2992#endif 4127#endif
2993 4128
2994#if EV_SIGNAL_ENABLE 4129#if EV_SIGNAL_ENABLE
2995 4130
2996void noinline 4131ecb_noinline
4132void
2997ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2998{ 4134{
2999 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
3000 return; 4136 return;
3001 4137
3002 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3003 4139
3004#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
3005 assert (("libev: a signal must not be attached to two different loops", 4141 assert (("libev: a signal must not be attached to two different loops",
3006 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3007 4143
3008 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
3009#endif 4146#endif
3010 4147
3011 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3012 4149
3013#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
3072 } 4209 }
3073 4210
3074 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3075} 4212}
3076 4213
3077void noinline 4214ecb_noinline
4215void
3078ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3079{ 4217{
3080 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3081 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3082 return; 4220 return;
3083 4221
3084 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3085 4223
3086 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3114#endif 4252#endif
3115 4253
3116#if EV_CHILD_ENABLE 4254#if EV_CHILD_ENABLE
3117 4255
3118void 4256void
3119ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3120{ 4258{
3121#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
3122 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3123#endif 4261#endif
3124 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
3125 return; 4263 return;
3126 4264
3127 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3128 4266
3129 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
… …
3131 4269
3132 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
3133} 4271}
3134 4272
3135void 4273void
3136ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3137{ 4275{
3138 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3139 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3140 return; 4278 return;
3141 4279
3142 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3143 4281
3144 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3158 4296
3159#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
3160#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3161#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
3162 4300
3163static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3164 4302
3165#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
3166 4304
3167/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3168# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3169 4307
3170static void noinline 4308ecb_noinline
4309static void
3171infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
3172{ 4311{
3173 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); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
3174 4316
3175 if (w->wd >= 0) 4317 if (w->wd >= 0)
3176 { 4318 {
3177 struct statfs sfs; 4319 struct statfs sfs;
3178 4320
… …
3182 4324
3183 if (!fs_2625) 4325 if (!fs_2625)
3184 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3185 else if (!statfs (w->path, &sfs) 4327 else if (!statfs (w->path, &sfs)
3186 && (sfs.f_type == 0x1373 /* devfs */ 4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
3187 || sfs.f_type == 0xEF53 /* ext2/3 */ 4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
3188 || sfs.f_type == 0x3153464a /* jfs */ 4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
3189 || sfs.f_type == 0x52654973 /* reiser3 */ 4337 || sfs.f_type == 0x52654973 /* reiser3 */
3190 || sfs.f_type == 0x01021994 /* tempfs */ 4338 || sfs.f_type == 0x01021994 /* tmpfs */
3191 || sfs.f_type == 0x58465342 /* xfs */)) 4339 || sfs.f_type == 0x58465342 /* xfs */))
3192 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3193 else 4341 else
3194 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3195 } 4343 }
… …
3230 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3231 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
3232 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3233} 4381}
3234 4382
3235static void noinline 4383ecb_noinline
4384static void
3236infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
3237{ 4386{
3238 int slot; 4387 int slot;
3239 int wd = w->wd; 4388 int wd = w->wd;
3240 4389
… …
3247 4396
3248 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
3249 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
3250} 4399}
3251 4400
3252static void noinline 4401ecb_noinline
4402static void
3253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3254{ 4404{
3255 if (slot < 0) 4405 if (slot < 0)
3256 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
3257 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3293 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3294 ofs += sizeof (struct inotify_event) + ev->len; 4444 ofs += sizeof (struct inotify_event) + ev->len;
3295 } 4445 }
3296} 4446}
3297 4447
3298inline_size void ecb_cold 4448inline_size ecb_cold
4449void
3299ev_check_2625 (EV_P) 4450ev_check_2625 (EV_P)
3300{ 4451{
3301 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
3302 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3303 */ 4454 */
… …
3308} 4459}
3309 4460
3310inline_size int 4461inline_size int
3311infy_newfd (void) 4462infy_newfd (void)
3312{ 4463{
3313#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
3314 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3315 if (fd >= 0) 4466 if (fd >= 0)
3316 return fd; 4467 return fd;
3317#endif 4468#endif
3318 return inotify_init (); 4469 return inotify_init ();
… …
3393#else 4544#else
3394# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3395#endif 4546#endif
3396 4547
3397void 4548void
3398ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3399{ 4550{
3400 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3401 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3402 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3403 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3404} 4555}
3405 4556
3406static void noinline 4557ecb_noinline
4558static void
3407stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3408{ 4560{
3409 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3410 4562
3411 ev_statdata prev = w->attr; 4563 ev_statdata prev = w->attr;
… …
3442 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3443 } 4595 }
3444} 4596}
3445 4597
3446void 4598void
3447ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3448{ 4600{
3449 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3450 return; 4602 return;
3451 4603
3452 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3453 4605
3454 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3473 4625
3474 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3475} 4627}
3476 4628
3477void 4629void
3478ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3479{ 4631{
3480 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3481 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3482 return; 4634 return;
3483 4635
3484 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3485 4637
3486#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
… …
3499} 4651}
3500#endif 4652#endif
3501 4653
3502#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3503void 4655void
3504ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3505{ 4657{
3506 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3507 return; 4659 return;
3508 4660
3509 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3510 4662
3511 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3514 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3515 4667
3516 ++idleall; 4668 ++idleall;
3517 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3518 4670
3519 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3520 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3521 } 4673 }
3522 4674
3523 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3524} 4676}
3525 4677
3526void 4678void
3527ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3528{ 4680{
3529 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3530 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3531 return; 4683 return;
3532 4684
3533 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3534 4686
3535 { 4687 {
… …
3546} 4698}
3547#endif 4699#endif
3548 4700
3549#if EV_PREPARE_ENABLE 4701#if EV_PREPARE_ENABLE
3550void 4702void
3551ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3552{ 4704{
3553 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3554 return; 4706 return;
3555 4707
3556 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3557 4709
3558 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3559 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3560 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3561 4713
3562 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3563} 4715}
3564 4716
3565void 4717void
3566ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3567{ 4719{
3568 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3569 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3570 return; 4722 return;
3571 4723
3572 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3573 4725
3574 { 4726 {
… …
3584} 4736}
3585#endif 4737#endif
3586 4738
3587#if EV_CHECK_ENABLE 4739#if EV_CHECK_ENABLE
3588void 4740void
3589ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3590{ 4742{
3591 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3592 return; 4744 return;
3593 4745
3594 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3595 4747
3596 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3597 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3598 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3599 4751
3600 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3601} 4753}
3602 4754
3603void 4755void
3604ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3605{ 4757{
3606 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3607 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3608 return; 4760 return;
3609 4761
3610 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3611 4763
3612 { 4764 {
… …
3621 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3622} 4774}
3623#endif 4775#endif
3624 4776
3625#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3626void noinline 4778ecb_noinline
4779void
3627ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3628{ 4781{
3629 ev_run (w->other, EVRUN_NOWAIT); 4782 ev_run (w->other, EVRUN_NOWAIT);
3630} 4783}
3631 4784
3632static void 4785static void
… …
3680 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3681} 4834}
3682#endif 4835#endif
3683 4836
3684void 4837void
3685ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3686{ 4839{
3687 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3688 return; 4841 return;
3689 4842
3690 { 4843 {
3691 EV_P = w->other; 4844 EV_P = w->other;
3692 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3711 4864
3712 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3713} 4866}
3714 4867
3715void 4868void
3716ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3717{ 4870{
3718 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3719 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3720 return; 4873 return;
3721 4874
3722 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3723 4876
3724 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
… …
3731} 4884}
3732#endif 4885#endif
3733 4886
3734#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3735void 4888void
3736ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3737{ 4890{
3738 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3739 return; 4892 return;
3740 4893
3741 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3742 4895
3743 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3744 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3745 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3746 4899
3747 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3748} 4901}
3749 4902
3750void 4903void
3751ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3752{ 4905{
3753 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3754 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3755 return; 4908 return;
3756 4909
3757 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3758 4911
3759 { 4912 {
… …
3769} 4922}
3770#endif 4923#endif
3771 4924
3772#if EV_CLEANUP_ENABLE 4925#if EV_CLEANUP_ENABLE
3773void 4926void
3774ev_cleanup_start (EV_P_ ev_cleanup *w) 4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3775{ 4928{
3776 if (expect_false (ev_is_active (w))) 4929 if (ecb_expect_false (ev_is_active (w)))
3777 return; 4930 return;
3778 4931
3779 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
3780 4933
3781 ev_start (EV_A_ (W)w, ++cleanupcnt); 4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
3782 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3783 cleanups [cleanupcnt - 1] = w; 4936 cleanups [cleanupcnt - 1] = w;
3784 4937
3785 /* cleanup watchers should never keep a refcount on the loop */ 4938 /* cleanup watchers should never keep a refcount on the loop */
3786 ev_unref (EV_A); 4939 ev_unref (EV_A);
3787 EV_FREQUENT_CHECK; 4940 EV_FREQUENT_CHECK;
3788} 4941}
3789 4942
3790void 4943void
3791ev_cleanup_stop (EV_P_ ev_cleanup *w) 4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3792{ 4945{
3793 clear_pending (EV_A_ (W)w); 4946 clear_pending (EV_A_ (W)w);
3794 if (expect_false (!ev_is_active (w))) 4947 if (ecb_expect_false (!ev_is_active (w)))
3795 return; 4948 return;
3796 4949
3797 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3798 ev_ref (EV_A); 4951 ev_ref (EV_A);
3799 4952
… …
3810} 4963}
3811#endif 4964#endif
3812 4965
3813#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3814void 4967void
3815ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3816{ 4969{
3817 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3818 return; 4971 return;
3819 4972
3820 w->sent = 0; 4973 w->sent = 0;
3821 4974
3822 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3823 4976
3824 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3825 4978
3826 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3827 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3828 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3829 4982
3830 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3831} 4984}
3832 4985
3833void 4986void
3834ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3835{ 4988{
3836 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3837 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3838 return; 4991 return;
3839 4992
3840 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3841 4994
3842 { 4995 {
… …
3850 5003
3851 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3852} 5005}
3853 5006
3854void 5007void
3855ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3856{ 5009{
3857 w->sent = 1; 5010 w->sent = 1;
3858 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
3859} 5012}
3860#endif 5013#endif
… …
3897 5050
3898 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3899} 5052}
3900 5053
3901void 5054void
3902ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3903{ 5056{
3904 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3905
3906 if (expect_false (!once))
3907 {
3908 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3909 return;
3910 }
3911 5058
3912 once->cb = cb; 5059 once->cb = cb;
3913 once->arg = arg; 5060 once->arg = arg;
3914 5061
3915 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3928} 5075}
3929 5076
3930/*****************************************************************************/ 5077/*****************************************************************************/
3931 5078
3932#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
3933void ecb_cold 5080ecb_cold
5081void
3934ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3935{ 5083{
3936 int i, j; 5084 int i, j;
3937 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3938 5086
3939 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3982 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3983#endif 5131#endif
3984 5132
3985#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3986 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3987 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3988 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3989 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3990#endif 5138#endif
3991 5139
3992#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
4045 5193
4046#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
4047 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
4048#endif 5196#endif
4049 5197
4050EV_CPP(})
4051

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