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

Comparing libev/ev.c (file contents):
Revision 1.406 by root, Tue Jan 24 16:37:12 2012 UTC vs.
Revision 1.499 by root, Wed Jun 26 07:50:27 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
… …
181 200
182#ifdef EV_H 201#ifdef EV_H
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
205#endif
206
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
186#endif 216#endif
187 217
188#ifndef _WIN32 218#ifndef _WIN32
189# include <sys/time.h> 219# include <sys/time.h>
190# include <sys/wait.h> 220# include <sys/wait.h>
191# include <unistd.h> 221# include <unistd.h>
192#else 222#else
193# include <io.h> 223# include <io.h>
194# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
195# include <windows.h> 226# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
198# endif 229# endif
199# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
200#endif 231#endif
201 232
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* 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 */
211 234
212/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 236#if defined EV_NSIG
214/* use what's provided */ 237/* use what's provided */
215#elif defined (NSIG) 238#elif defined NSIG
216# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 240#elif defined _NSIG
218# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 242#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 244#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 248#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 250#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 254#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 256#else
234# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 258#endif
239 259
240#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
242#endif 262#endif
243 263
244#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 267# else
248# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
249# endif 269# endif
250#endif 270#endif
251 271
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
252#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 284# else
256# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
257# endif 286# endif
258#endif 287#endif
… …
295 324
296#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 326# define EV_USE_PORT 0
298#endif 327#endif
299 328
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
300#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 340# else
304# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
345 382
346#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 385#endif
349 386
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 406# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
358# else 411# else
… …
361# endif 414# endif
362#endif 415#endif
363 416
364/* 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 */
365 418
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
375#endif 422#endif
376 423
… …
384# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
385#endif 432#endif
386 433
387#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
390# 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
391# endif 446# endif
392#endif 447#endif
393 448
394#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
395# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
401# endif 456# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 457#endif
407 458
408#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 461# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
469/* 520/*
470 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
471 * 522 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 525 * All rights reserved.
475 * 526 *
476 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
496 */ 558 */
497 559
498#ifndef ECB_H 560#ifndef ECB_H
499#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
500 565
501#ifdef _WIN32 566#ifdef _WIN32
502 typedef signed char int8_t; 567 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
514 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
515#else 589#else
516 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
517#endif 608#endif
518 609
519/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 613 * or so.
523 * 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
524 * 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.
525 */ 616 */
526#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
529 #else 619#else
530 #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)))
531 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
532#endif 662#endif
533 663
534/*****************************************************************************/ 664/*****************************************************************************/
535 665
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 668
539#if ECB_NO_THREADS || ECB_NO_SMP 669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 675#endif
542 676
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
543#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 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")
545 #if __i386 || __i386__ 689 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 693 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 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 */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__ 713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 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")
565 #endif 738 #endif
566 #endif 739 #endif
567#endif 740#endif
568 741
569#ifndef ECB_MEMORY_FENCE 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
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
571 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 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()
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32) 770 #elif defined _WIN32
580 #include <WinNT.h> 771 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h> 774 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier () 775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_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)
587 #endif 792 #endif
588#endif 793#endif
589 794
590#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif 810 #endif
606#endif 811#endif
607 812
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif 815#endif
611 816
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif 819#endif
615 820
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
616/*****************************************************************************/ 825/*****************************************************************************/
617 826
618#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
619
620#if __cplusplus
621 #define ecb_inline static inline 828 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
624#elif ECB_C99 831#elif ECB_C99
625 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
639 846
640#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
644 852
645#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
646 854
647#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
648 #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)
649 #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)
650 #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)
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else 879#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
657#endif 881#endif
658 882
659/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5) 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; };
661 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
662#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
663 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
664#endif 890#endif
665 891
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
666#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
668#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
670#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
671 927
672#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
687/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
690 946
691/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
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))
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */ 958 /* no popcountll */
700#else 959#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
702 ecb_function_ int 961 ecb_function_ ecb_const int
703 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
704 { 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
705 int r = 0; 969 int r = 0;
706 970
707 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
708 972
709#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
719 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
721#endif 985#endif
722 986
723 return r; 987 return r;
988#endif
724 } 989 }
725 990
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
727 ecb_function_ int 992 ecb_function_ ecb_const int
728 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
729 { 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
730 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
732 } 1003 }
733 1004
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
735 ecb_function_ int 1006 ecb_function_ ecb_const int
736 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
737 { 1008 {
738 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101; 1012 x *= 0x01010101;
742 1013
743 return x >> 24; 1014 return x >> 24;
744 } 1015 }
745 1016
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
747 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
748 { 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
749 int r = 0; 1025 int r = 0;
750 1026
751 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
756 1032
757 return r; 1033 return r;
1034#endif
758 } 1035 }
759 1036
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
761 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
762 { 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
763 int r = 0; 1045 int r = 0;
764 1046
765 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
766 1048
767 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
768 } 1051 }
769#endif 1052#endif
770 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
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
773{ 1061{
774 return ( (x * 0x0802U & 0x22110U) 1062 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776} 1064}
777 1065
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
780{ 1068{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8); 1072 x = ( x >> 8 ) | ( x << 8);
785 1073
786 return x; 1074 return x;
787} 1075}
788 1076
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
791{ 1079{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
798 return x; 1086 return x;
799} 1087}
800 1088
801/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */ 1090/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
804ecb_function_ int 1092ecb_function_ ecb_const int
805ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
806{ 1094{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808} 1096}
809 1097
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
818 1106
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (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); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (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); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (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); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (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); }
827 1115
828#if ECB_GCC_VERSION(4,3) 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
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
830 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (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)))
832#else 1129#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
834 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
835 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
836 { 1133 {
837 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
838 } 1135 }
839 1136
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
841 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
842 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
843 { 1140 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 } 1142 }
846 1143
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
848 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
849 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
850 { 1147 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 } 1149 }
853#endif 1150#endif
854 1151
855#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
856 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
857#else 1154#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
860 ecb_function_ void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
861#endif 1158#endif
862 1159
863/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
865 1162
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
867ecb_function_ unsigned char 1164ecb_inline ecb_const uint32_t
868ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
869{ 1166{
870 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
871 return *(unsigned char *)&u; 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
872} 1189}
873 1190
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
878 1195
879#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else 1198#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif 1200#endif
884 1201
885#if __cplusplus 1202#if ECB_CPP
886 template<typename T> 1203 template<typename T>
887 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
888 { 1205 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 } 1207 }
… …
907 } 1224 }
908#else 1225#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif 1227#endif
911 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
912#endif 1534#endif
913 1535
914/* ECB.H END */ 1536/* ECB.H END */
915 1537
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
937#define inline_size ecb_inline 1559#define inline_size ecb_inline
938 1560
939#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
940# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
941#else 1563#else
942# define inline_speed static noinline 1564# define inline_speed noinline static
943#endif 1565#endif
944 1566
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946 1568
947#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
948# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
949#else 1571#else
950# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
951#endif 1573#endif
952 1574
953#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
954#define EMPTY2(a,b) /* used to suppress some warnings */
955 1576
956typedef ev_watcher *W; 1577typedef ev_watcher *W;
957typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
958typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
959 1580
… …
984# include "ev_win32.c" 1605# include "ev_win32.c"
985#endif 1606#endif
986 1607
987/*****************************************************************************/ 1608/*****************************************************************************/
988 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
989/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
990 1615
991#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
992# include <math.h> 1617# include <math.h>
993# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
994#else 1619#else
995 1620
996#include <float.h> 1621#include <float.h>
997 1622
998/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
999static ev_tstamp noinline 1625static ev_tstamp
1000ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
1001{ 1627{
1002 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1036 1662
1037#ifdef __linux 1663#ifdef __linux
1038# include <sys/utsname.h> 1664# include <sys/utsname.h>
1039#endif 1665#endif
1040 1666
1041static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
1042ev_linux_version (void) 1669ev_linux_version (void)
1043{ 1670{
1044#ifdef __linux 1671#ifdef __linux
1045 unsigned int v = 0; 1672 unsigned int v = 0;
1046 struct utsname buf; 1673 struct utsname buf;
… …
1075} 1702}
1076 1703
1077/*****************************************************************************/ 1704/*****************************************************************************/
1078 1705
1079#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1080static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1081ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1082{ 1710{
1083 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1084} 1712}
1085#endif 1713#endif
1086 1714
1087static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1088 1716
1089void ecb_cold 1717ecb_cold
1718void
1090ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1091{ 1720{
1092 syserr_cb = cb; 1721 syserr_cb = cb;
1093} 1722}
1094 1723
1095static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1096ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1097{ 1727{
1098 if (!msg) 1728 if (!msg)
1099 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1100 1730
… …
1113 abort (); 1743 abort ();
1114 } 1744 }
1115} 1745}
1116 1746
1117static void * 1747static void *
1118ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1119{ 1749{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
1123 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1124 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
1125 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
1126 */ 1755 */
1127 1756
1128 if (size) 1757 if (size)
1129 return realloc (ptr, size); 1758 return realloc (ptr, size);
1130 1759
1131 free (ptr); 1760 free (ptr);
1132 return 0; 1761 return 0;
1133#endif
1134} 1762}
1135 1763
1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1137 1765
1138void ecb_cold 1766ecb_cold
1767void
1139ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1140{ 1769{
1141 alloc = cb; 1770 alloc = cb;
1142} 1771}
1143 1772
1144inline_speed void * 1773inline_speed void *
… …
1171typedef struct 1800typedef struct
1172{ 1801{
1173 WL head; 1802 WL head;
1174 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1175 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
1177 unsigned char unused; 1806 unsigned char unused;
1178#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1179 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1180#endif 1809#endif
1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1261 1890
1262/*****************************************************************************/ 1891/*****************************************************************************/
1263 1892
1264#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1265ev_tstamp 1894ev_tstamp
1266ev_time (void) 1895ev_time (void) EV_NOEXCEPT
1267{ 1896{
1268#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1269 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1270 { 1899 {
1271 struct timespec ts; 1900 struct timespec ts;
… …
1295 return ev_time (); 1924 return ev_time ();
1296} 1925}
1297 1926
1298#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1299ev_tstamp 1928ev_tstamp
1300ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
1301{ 1930{
1302 return ev_rt_now; 1931 return ev_rt_now;
1303} 1932}
1304#endif 1933#endif
1305 1934
1306void 1935void
1307ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1308{ 1937{
1309 if (delay > 0.) 1938 if (delay > 0.)
1310 { 1939 {
1311#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1312 struct timespec ts; 1941 struct timespec ts;
1313 1942
1314 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1315 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1316#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
1317 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1318#else 1949#else
1319 struct timeval tv; 1950 struct timeval tv;
1320 1951
1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1352 } 1983 }
1353 1984
1354 return ncur; 1985 return ncur;
1355} 1986}
1356 1987
1357static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1358array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1359{ 1991{
1360 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1361 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1362} 1994}
1363 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1364#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1365 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1366 2000
1367#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1368 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1369 { \ 2003 { \
1370 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1371 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1372 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1373 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1374 } 2008 }
1375 2009
1376#if 0 2010#if 0
1377#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1378 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1387 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1388 2022
1389/*****************************************************************************/ 2023/*****************************************************************************/
1390 2024
1391/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1392static void noinline 2026noinline
2027static void
1393pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1394{ 2029{
1395} 2030}
1396 2031
1397void noinline 2032noinline
2033void
1398ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1399{ 2035{
1400 W w_ = (W)w; 2036 W w_ = (W)w;
1401 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1402 2038
1403 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1404 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1405 else 2041 else
1406 { 2042 {
1407 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1408 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1409 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1410 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1411 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
1412} 2050}
1413 2051
1414inline_speed void 2052inline_speed void
1415feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1416{ 2054{
1417 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1418 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1419} 2057}
1420 2058
1421inline_size void 2059inline_size void
1422feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1462 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1464} 2102}
1465 2103
1466void 2104void
1467ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1468{ 2106{
1469 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1470 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1471} 2109}
1472 2110
… …
1509 ev_io *w; 2147 ev_io *w;
1510 2148
1511 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1513 2151
1514 anfd->reify = 0; 2152 anfd->reify = 0;
1515 2153
1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1517 { 2155 {
1518 anfd->events = 0; 2156 anfd->events = 0;
1519 2157
… …
1530 2168
1531 fdchangecnt = 0; 2169 fdchangecnt = 0;
1532} 2170}
1533 2171
1534/* something about the given fd changed */ 2172/* something about the given fd changed */
1535inline_size void 2173inline_size
2174void
1536fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1537{ 2176{
1538 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1539 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1540 2179
1541 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1542 { 2181 {
1543 ++fdchangecnt; 2182 ++fdchangecnt;
1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1545 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1546 } 2185 }
1547} 2186}
1548 2187
1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1550inline_speed void ecb_cold 2189inline_speed ecb_cold void
1551fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1552{ 2191{
1553 ev_io *w; 2192 ev_io *w;
1554 2193
1555 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1559 } 2198 }
1560} 2199}
1561 2200
1562/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold 2202inline_size ecb_cold int
1564fd_valid (int fd) 2203fd_valid (int fd)
1565{ 2204{
1566#ifdef _WIN32 2205#ifdef _WIN32
1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1568#else 2207#else
1569 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1570#endif 2209#endif
1571} 2210}
1572 2211
1573/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1574static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1575fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1576{ 2216{
1577 int fd; 2217 int fd;
1578 2218
1579 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1581 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1582 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1583} 2223}
1584 2224
1585/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1586static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1587fd_enomem (EV_P) 2228fd_enomem (EV_P)
1588{ 2229{
1589 int fd; 2230 int fd;
1590 2231
1591 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1595 break; 2236 break;
1596 } 2237 }
1597} 2238}
1598 2239
1599/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1600static void noinline 2241noinline
2242static void
1601fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1602{ 2244{
1603 int fd; 2245 int fd;
1604 2246
1605 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1786 2428
1787/*****************************************************************************/ 2429/*****************************************************************************/
1788 2430
1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1790 2432
1791static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1792evpipe_init (EV_P) 2435evpipe_init (EV_P)
1793{ 2436{
1794 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1795 { 2438 {
2439 int fds [2];
2440
1796# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1799 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1800 2446
1801 if (evfd >= 0) 2447 if (fds [1] < 0)
2448# endif
1802 { 2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
1803 evpipe [0] = -1; 2456 evpipe [0] = fds [0];
1804 fd_intern (evfd); /* doing it twice doesn't hurt */ 2457
1805 ev_io_set (&pipe_w, evfd, EV_READ); 2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
2479inline_speed void
2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2481{
2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2483
2484 if (expect_true (*flag))
2485 return;
2486
2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
2503#if EV_USE_EVENTFD
2504 if (evpipe [0] < 0)
2505 {
2506 uint64_t counter = 1;
2507 write (evpipe [1], &counter, sizeof (uint64_t));
1806 } 2508 }
1807 else 2509 else
1808# endif 2510#endif
1809 { 2511 {
1810 while (pipe (evpipe)) 2512#ifdef _WIN32
1811 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1812 2514 DWORD sent;
1813 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1814 fd_intern (evpipe [1]); 2516 buf.len = 1;
1815 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1816 } 2518#else
1817
1818 ev_io_start (EV_A_ &pipe_w);
1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1820 }
1821}
1822
1823inline_speed void
1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1825{
1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1843 old_errno = errno; /* save errno because write will clobber it */
1844
1845#if EV_USE_EVENTFD
1846 if (evfd >= 0)
1847 {
1848 uint64_t counter = 1;
1849 write (evfd, &counter, sizeof (uint64_t));
1850 }
1851 else
1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1859 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1860 } 2521 }
1861 2522
1862 errno = old_errno; 2523 errno = old_errno;
1863 } 2524 }
1864} 2525}
… …
1871 int i; 2532 int i;
1872 2533
1873 if (revents & EV_READ) 2534 if (revents & EV_READ)
1874 { 2535 {
1875#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1876 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1877 { 2538 {
1878 uint64_t counter; 2539 uint64_t counter;
1879 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1880 } 2541 }
1881 else 2542 else
1882#endif 2543#endif
1883 { 2544 {
1884 char dummy; 2545 char dummy[4];
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1886 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
1887 } 2556 }
1888 } 2557 }
1889 2558
1890 pipe_write_skipped = 0; 2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1891 2562
1892#if EV_SIGNAL_ENABLE 2563#if EV_SIGNAL_ENABLE
1893 if (sig_pending) 2564 if (sig_pending)
1894 { 2565 {
1895 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1896 2569
1897 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1898 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1899 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1900 } 2573 }
… …
1902 2575
1903#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1904 if (async_pending) 2577 if (async_pending)
1905 { 2578 {
1906 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1907 2582
1908 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1909 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1910 { 2585 {
1911 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1912 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1913 } 2589 }
1914 } 2590 }
1915#endif 2591#endif
1916} 2592}
1917 2593
1918/*****************************************************************************/ 2594/*****************************************************************************/
1919 2595
1920void 2596void
1921ev_feed_signal (int signum) 2597ev_feed_signal (int signum) EV_NOEXCEPT
1922{ 2598{
1923#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
1924 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
1925 2603
1926 if (!EV_A) 2604 if (!EV_A)
1927 return; 2605 return;
1928#endif 2606#endif
1929 2607
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1; 2608 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending); 2609 evpipe_write (EV_A_ &sig_pending);
1935} 2610}
1936 2611
1937static void 2612static void
… …
1942#endif 2617#endif
1943 2618
1944 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
1945} 2620}
1946 2621
1947void noinline 2622noinline
2623void
1948ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1949{ 2625{
1950 WL w; 2626 WL w;
1951 2627
1952 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1953 return; 2629 return;
1954 2630
1955 --signum; 2631 --signum;
1956 2632
1957#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1961 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1962 return; 2638 return;
1963#endif 2639#endif
1964 2640
1965 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1966 2643
1967 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1969} 2646}
1970 2647
… …
2061# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
2062#endif 2739#endif
2063#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2064# include "ev_epoll.c" 2741# include "ev_epoll.c"
2065#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2066#if EV_USE_POLL 2746#if EV_USE_POLL
2067# include "ev_poll.c" 2747# include "ev_poll.c"
2068#endif 2748#endif
2069#if EV_USE_SELECT 2749#if EV_USE_SELECT
2070# include "ev_select.c" 2750# include "ev_select.c"
2071#endif 2751#endif
2072 2752
2073int ecb_cold 2753ecb_cold int
2074ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
2075{ 2755{
2076 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2077} 2757}
2078 2758
2079int ecb_cold 2759ecb_cold int
2080ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
2081{ 2761{
2082 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2083} 2763}
2084 2764
2085/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
2086int inline_size ecb_cold 2766inline_size ecb_cold int
2087enable_secure (void) 2767enable_secure (void)
2088{ 2768{
2089#ifdef _WIN32 2769#ifdef _WIN32
2090 return 0; 2770 return 0;
2091#else 2771#else
2092 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2093 || getgid () != getegid (); 2773 || getgid () != getegid ();
2094#endif 2774#endif
2095} 2775}
2096 2776
2097unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2098ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
2099{ 2780{
2100 unsigned int flags = 0; 2781 unsigned int flags = 0;
2101 2782
2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2103 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2104 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2105 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2107 2789
2108 return flags; 2790 return flags;
2109} 2791}
2110 2792
2111unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2112ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
2113{ 2796{
2114 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2115 2798
2116#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2117 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2125#endif 2808#endif
2126#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif 2811#endif
2129 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2130 return flags; 2818 return flags;
2131} 2819}
2132 2820
2133unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2134ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
2135{ 2824{
2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2137 2826
2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2141 2830
2142 return flags; 2831 return flags;
2143} 2832}
2144 2833
2145unsigned int 2834unsigned int
2146ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
2147{ 2836{
2148 return backend; 2837 return backend;
2149} 2838}
2150 2839
2151#if EV_FEATURE_API 2840#if EV_FEATURE_API
2152unsigned int 2841unsigned int
2153ev_iteration (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
2154{ 2843{
2155 return loop_count; 2844 return loop_count;
2156} 2845}
2157 2846
2158unsigned int 2847unsigned int
2159ev_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
2160{ 2849{
2161 return loop_depth; 2850 return loop_depth;
2162} 2851}
2163 2852
2164void 2853void
2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2166{ 2855{
2167 io_blocktime = interval; 2856 io_blocktime = interval;
2168} 2857}
2169 2858
2170void 2859void
2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2172{ 2861{
2173 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2174} 2863}
2175 2864
2176void 2865void
2177ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2178{ 2867{
2179 userdata = data; 2868 userdata = data;
2180} 2869}
2181 2870
2182void * 2871void *
2183ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
2184{ 2873{
2185 return userdata; 2874 return userdata;
2186} 2875}
2187 2876
2188void 2877void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2190{ 2879{
2191 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2192} 2881}
2193 2882
2194void 2883void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2196{ 2885{
2197 release_cb = release; 2886 release_cb = release;
2198 acquire_cb = acquire; 2887 acquire_cb = acquire;
2199} 2888}
2200#endif 2889#endif
2201 2890
2202/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2203static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2204loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2205{ 2895{
2206 if (!backend) 2896 if (!backend)
2207 { 2897 {
2208 origflags = flags; 2898 origflags = flags;
2209 2899
… …
2254#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
2255 async_pending = 0; 2945 async_pending = 0;
2256#endif 2946#endif
2257 pipe_write_skipped = 0; 2947 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0; 2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2259#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif 2953#endif
2262#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2265 2957
2266 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2267 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2268 2960
2269#if EV_USE_IOCP 2961#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif 2963#endif
2272#if EV_USE_PORT 2964#if EV_USE_PORT
2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2274#endif 2966#endif
2275#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2277#endif 2972#endif
2278#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2279 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2280#endif 2975#endif
2281#if EV_USE_POLL 2976#if EV_USE_POLL
2282 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2283#endif 2978#endif
2284#if EV_USE_SELECT 2979#if EV_USE_SELECT
2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2286#endif 2981#endif
2287 2982
2288 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2289 2984
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2293#endif 2988#endif
2294 } 2989 }
2295} 2990}
2296 2991
2297/* free up a loop structure */ 2992/* free up a loop structure */
2298void ecb_cold 2993ecb_cold
2994void
2299ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2300{ 2996{
2301 int i; 2997 int i;
2302 2998
2303#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2314 EV_INVOKE_PENDING; 3010 EV_INVOKE_PENDING;
2315 } 3011 }
2316#endif 3012#endif
2317 3013
2318#if EV_CHILD_ENABLE 3014#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev)) 3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2320 { 3016 {
2321 ev_ref (EV_A); /* child watcher */ 3017 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev); 3018 ev_signal_stop (EV_A_ &childev);
2323 } 3019 }
2324#endif 3020#endif
… …
2326 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
2327 { 3023 {
2328 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
2329 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
2330 3026
2331#if EV_USE_EVENTFD
2332 if (evfd >= 0)
2333 close (evfd);
2334#endif
2335
2336 if (evpipe [0] >= 0)
2337 {
2338 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2339 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2340 }
2341 } 3029 }
2342 3030
2343#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
2345 close (sigfd); 3033 close (sigfd);
… …
2352 3040
2353 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2354 close (backend_fd); 3042 close (backend_fd);
2355 3043
2356#if EV_USE_IOCP 3044#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif 3046#endif
2359#if EV_USE_PORT 3047#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2361#endif 3049#endif
2362#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2364#endif 3055#endif
2365#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2367#endif 3058#endif
2368#if EV_USE_POLL 3059#if EV_USE_POLL
2369 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2370#endif 3061#endif
2371#if EV_USE_SELECT 3062#if EV_USE_SELECT
2372 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2373#endif 3064#endif
2374 3065
2375 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2376 { 3067 {
2377 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2419 3110
2420inline_size void 3111inline_size void
2421loop_fork (EV_P) 3112loop_fork (EV_P)
2422{ 3113{
2423#if EV_USE_PORT 3114#if EV_USE_PORT
2424 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2425#endif 3116#endif
2426#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2427 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2428#endif 3122#endif
2429#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2430 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2431#endif 3125#endif
2432#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2433 infy_fork (EV_A); 3127 infy_fork (EV_A);
2434#endif 3128#endif
2435 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2436 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2437 { 3132 {
2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2439 3134
2440 ev_ref (EV_A); 3135 ev_ref (EV_A);
2441 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
2442 3137
2443#if EV_USE_EVENTFD
2444 if (evfd >= 0)
2445 close (evfd);
2446#endif
2447
2448 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
2449 {
2450 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
2451 EV_WIN32_CLOSE_FD (evpipe [1]);
2452 }
2453 3140
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2455 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
2456 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
2457 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2458#endif
2459 } 3144 }
3145#endif
2460 3146
2461 postfork = 0; 3147 postfork = 0;
2462} 3148}
2463 3149
2464#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2465 3151
3152ecb_cold
2466struct ev_loop * ecb_cold 3153struct ev_loop *
2467ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2468{ 3155{
2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2470 3157
2471 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2472 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2479} 3166}
2480 3167
2481#endif /* multiplicity */ 3168#endif /* multiplicity */
2482 3169
2483#if EV_VERIFY 3170#if EV_VERIFY
2484static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2485verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2486{ 3174{
2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2488 3176
2489 if (w->pending) 3177 if (w->pending)
2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2491} 3179}
2492 3180
2493static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2494verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2495{ 3184{
2496 int i; 3185 int i;
2497 3186
2498 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2503 3192
2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2505 } 3194 }
2506} 3195}
2507 3196
2508static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2509array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2510{ 3200{
2511 while (cnt--) 3201 while (cnt--)
2512 { 3202 {
2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2516} 3206}
2517#endif 3207#endif
2518 3208
2519#if EV_FEATURE_API 3209#if EV_FEATURE_API
2520void ecb_cold 3210void ecb_cold
2521ev_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
2522{ 3212{
2523#if EV_VERIFY 3213#if EV_VERIFY
2524 int i; 3214 int i;
2525 WL w; 3215 WL w, w2;
2526 3216
2527 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
2528 3218
2529 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
2530 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2532 3222
2533 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
2534 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
2535 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
2536 { 3229 {
2537 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2539 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2540 } 3240 }
3241 }
2541 3242
2542 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
2543 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
2544 3245
2545#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
2591#endif 3292#endif
2592} 3293}
2593#endif 3294#endif
2594 3295
2595#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2596struct ev_loop * ecb_cold 3298struct ev_loop *
2597#else 3299#else
2598int 3300int
2599#endif 3301#endif
2600ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2601{ 3303{
2602 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2603 { 3305 {
2604#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2605 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2624 3326
2625 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2626} 3328}
2627 3329
2628void 3330void
2629ev_loop_fork (EV_P) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2630{ 3332{
2631 postfork = 1; /* must be in line with ev_default_fork */ 3333 postfork = 1;
2632} 3334}
2633 3335
2634/*****************************************************************************/ 3336/*****************************************************************************/
2635 3337
2636void 3338void
… …
2638{ 3340{
2639 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2640} 3342}
2641 3343
2642unsigned int 3344unsigned int
2643ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
2644{ 3346{
2645 int pri; 3347 int pri;
2646 unsigned int count = 0; 3348 unsigned int count = 0;
2647 3349
2648 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2650 3352
2651 return count; 3353 return count;
2652} 3354}
2653 3355
2654void noinline 3356noinline
3357void
2655ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2656{ 3359{
2657 int pri; 3360 pendingpri = NUMPRI;
2658 3361
2659 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2660 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
2661 { 3368 {
2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2663 3370
2664 p->w->pending = 0; 3371 p->w->pending = 0;
2665 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2666 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2667 } 3374 }
3375 }
3376 while (pendingpri);
2668} 3377}
2669 3378
2670#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2730 } 3439 }
2731} 3440}
2732 3441
2733#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2734 3443
2735static void noinline 3444noinline
3445static void
2736periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2737{ 3447{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740 3450
… …
2762{ 3472{
2763 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2764 3474
2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2766 { 3476 {
2767 int feed_count = 0;
2768
2769 do 3477 do
2770 { 3478 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772 3480
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2800 } 3508 }
2801} 3509}
2802 3510
2803/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2805static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2806periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2807{ 3516{
2808 int i; 3517 int i;
2809 3518
2810 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2823 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2824} 3533}
2825#endif 3534#endif
2826 3535
2827/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2828static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2829timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2830{ 3540{
2831 int i; 3541 int i;
2832 3542
2833 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2907 3617
2908 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2909 } 3619 }
2910} 3620}
2911 3621
2912void 3622int
2913ev_run (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2914{ 3624{
2915#if EV_FEATURE_API 3625#if EV_FEATURE_API
2916 ++loop_depth; 3626 ++loop_depth;
2917#endif 3627#endif
… …
3032 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034 3744
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036 3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3037 if (pipe_write_skipped) 3748 if (pipe_write_skipped)
3038 { 3749 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 } 3752 }
3042 3753
3043
3044 /* update ev_rt_now, do magic */ 3754 /* update ev_rt_now, do magic */
3045 time_update (EV_A_ waittime + sleeptime); 3755 time_update (EV_A_ waittime + sleeptime);
3046 } 3756 }
3047 3757
3048 /* queue pending timers and reschedule them */ 3758 /* queue pending timers and reschedule them */
… …
3074 loop_done = EVBREAK_CANCEL; 3784 loop_done = EVBREAK_CANCEL;
3075 3785
3076#if EV_FEATURE_API 3786#if EV_FEATURE_API
3077 --loop_depth; 3787 --loop_depth;
3078#endif 3788#endif
3079}
3080 3789
3790 return activecnt;
3791}
3792
3081void 3793void
3082ev_break (EV_P_ int how) 3794ev_break (EV_P_ int how) EV_NOEXCEPT
3083{ 3795{
3084 loop_done = how; 3796 loop_done = how;
3085} 3797}
3086 3798
3087void 3799void
3088ev_ref (EV_P) 3800ev_ref (EV_P) EV_NOEXCEPT
3089{ 3801{
3090 ++activecnt; 3802 ++activecnt;
3091} 3803}
3092 3804
3093void 3805void
3094ev_unref (EV_P) 3806ev_unref (EV_P) EV_NOEXCEPT
3095{ 3807{
3096 --activecnt; 3808 --activecnt;
3097} 3809}
3098 3810
3099void 3811void
3100ev_now_update (EV_P) 3812ev_now_update (EV_P) EV_NOEXCEPT
3101{ 3813{
3102 time_update (EV_A_ 1e100); 3814 time_update (EV_A_ 1e100);
3103} 3815}
3104 3816
3105void 3817void
3106ev_suspend (EV_P) 3818ev_suspend (EV_P) EV_NOEXCEPT
3107{ 3819{
3108 ev_now_update (EV_A); 3820 ev_now_update (EV_A);
3109} 3821}
3110 3822
3111void 3823void
3112ev_resume (EV_P) 3824ev_resume (EV_P) EV_NOEXCEPT
3113{ 3825{
3114 ev_tstamp mn_prev = mn_now; 3826 ev_tstamp mn_prev = mn_now;
3115 3827
3116 ev_now_update (EV_A); 3828 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev); 3829 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3156 w->pending = 0; 3868 w->pending = 0;
3157 } 3869 }
3158} 3870}
3159 3871
3160int 3872int
3161ev_clear_pending (EV_P_ void *w) 3873ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3162{ 3874{
3163 W w_ = (W)w; 3875 W w_ = (W)w;
3164 int pending = w_->pending; 3876 int pending = w_->pending;
3165 3877
3166 if (expect_true (pending)) 3878 if (expect_true (pending))
… …
3198 w->active = 0; 3910 w->active = 0;
3199} 3911}
3200 3912
3201/*****************************************************************************/ 3913/*****************************************************************************/
3202 3914
3203void noinline 3915noinline
3916void
3204ev_io_start (EV_P_ ev_io *w) 3917ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3205{ 3918{
3206 int fd = w->fd; 3919 int fd = w->fd;
3207 3920
3208 if (expect_false (ev_is_active (w))) 3921 if (expect_false (ev_is_active (w)))
3209 return; 3922 return;
3210 3923
3211 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3924 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3925 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3213 3926
3927#if EV_VERIFY >= 2
3928 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3929#endif
3214 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3215 3931
3216 ev_start (EV_A_ (W)w, 1); 3932 ev_start (EV_A_ (W)w, 1);
3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3933 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3218 wlist_add (&anfds[fd].head, (WL)w); 3934 wlist_add (&anfds[fd].head, (WL)w);
3935
3936 /* common bug, apparently */
3937 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3219 3938
3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3939 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3221 w->events &= ~EV__IOFDSET; 3940 w->events &= ~EV__IOFDSET;
3222 3941
3223 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
3224} 3943}
3225 3944
3226void noinline 3945noinline
3946void
3227ev_io_stop (EV_P_ ev_io *w) 3947ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 3948{
3229 clear_pending (EV_A_ (W)w); 3949 clear_pending (EV_A_ (W)w);
3230 if (expect_false (!ev_is_active (w))) 3950 if (expect_false (!ev_is_active (w)))
3231 return; 3951 return;
3232 3952
3233 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3953 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3234 3954
3955#if EV_VERIFY >= 2
3956 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3957#endif
3235 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
3236 3959
3237 wlist_del (&anfds[w->fd].head, (WL)w); 3960 wlist_del (&anfds[w->fd].head, (WL)w);
3238 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3239 3962
3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3963 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3241 3964
3242 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
3243} 3966}
3244 3967
3245void noinline 3968noinline
3969void
3246ev_timer_start (EV_P_ ev_timer *w) 3970ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3247{ 3971{
3248 if (expect_false (ev_is_active (w))) 3972 if (expect_false (ev_is_active (w)))
3249 return; 3973 return;
3250 3974
3251 ev_at (w) += mn_now; 3975 ev_at (w) += mn_now;
… …
3254 3978
3255 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
3256 3980
3257 ++timercnt; 3981 ++timercnt;
3258 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3982 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3259 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3983 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3260 ANHE_w (timers [ev_active (w)]) = (WT)w; 3984 ANHE_w (timers [ev_active (w)]) = (WT)w;
3261 ANHE_at_cache (timers [ev_active (w)]); 3985 ANHE_at_cache (timers [ev_active (w)]);
3262 upheap (timers, ev_active (w)); 3986 upheap (timers, ev_active (w));
3263 3987
3264 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3265 3989
3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3990 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3267} 3991}
3268 3992
3269void noinline 3993noinline
3994void
3270ev_timer_stop (EV_P_ ev_timer *w) 3995ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3271{ 3996{
3272 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
3274 return; 3999 return;
3275 4000
… …
3294 ev_stop (EV_A_ (W)w); 4019 ev_stop (EV_A_ (W)w);
3295 4020
3296 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3297} 4022}
3298 4023
3299void noinline 4024noinline
4025void
3300ev_timer_again (EV_P_ ev_timer *w) 4026ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3301{ 4027{
3302 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
3303 4029
3304 clear_pending (EV_A_ w); 4030 clear_pending (EV_A_ (W)w);
3305 4031
3306 if (ev_is_active (w)) 4032 if (ev_is_active (w))
3307 { 4033 {
3308 if (w->repeat) 4034 if (w->repeat)
3309 { 4035 {
… …
3322 4048
3323 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
3324} 4050}
3325 4051
3326ev_tstamp 4052ev_tstamp
3327ev_timer_remaining (EV_P_ ev_timer *w) 4053ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3328{ 4054{
3329 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4055 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3330} 4056}
3331 4057
3332#if EV_PERIODIC_ENABLE 4058#if EV_PERIODIC_ENABLE
3333void noinline 4059noinline
4060void
3334ev_periodic_start (EV_P_ ev_periodic *w) 4061ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3335{ 4062{
3336 if (expect_false (ev_is_active (w))) 4063 if (expect_false (ev_is_active (w)))
3337 return; 4064 return;
3338 4065
3339 if (w->reschedule_cb) 4066 if (w->reschedule_cb)
… …
3348 4075
3349 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3350 4077
3351 ++periodiccnt; 4078 ++periodiccnt;
3352 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4079 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3353 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4080 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3354 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4081 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3355 ANHE_at_cache (periodics [ev_active (w)]); 4082 ANHE_at_cache (periodics [ev_active (w)]);
3356 upheap (periodics, ev_active (w)); 4083 upheap (periodics, ev_active (w));
3357 4084
3358 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3359 4086
3360 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4087 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3361} 4088}
3362 4089
3363void noinline 4090noinline
4091void
3364ev_periodic_stop (EV_P_ ev_periodic *w) 4092ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3365{ 4093{
3366 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
3367 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
3368 return; 4096 return;
3369 4097
… …
3386 ev_stop (EV_A_ (W)w); 4114 ev_stop (EV_A_ (W)w);
3387 4115
3388 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
3389} 4117}
3390 4118
3391void noinline 4119noinline
4120void
3392ev_periodic_again (EV_P_ ev_periodic *w) 4121ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3393{ 4122{
3394 /* TODO: use adjustheap and recalculation */ 4123 /* TODO: use adjustheap and recalculation */
3395 ev_periodic_stop (EV_A_ w); 4124 ev_periodic_stop (EV_A_ w);
3396 ev_periodic_start (EV_A_ w); 4125 ev_periodic_start (EV_A_ w);
3397} 4126}
… …
3401# define SA_RESTART 0 4130# define SA_RESTART 0
3402#endif 4131#endif
3403 4132
3404#if EV_SIGNAL_ENABLE 4133#if EV_SIGNAL_ENABLE
3405 4134
3406void noinline 4135noinline
4136void
3407ev_signal_start (EV_P_ ev_signal *w) 4137ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3408{ 4138{
3409 if (expect_false (ev_is_active (w))) 4139 if (expect_false (ev_is_active (w)))
3410 return; 4140 return;
3411 4141
3412 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4142 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3414#if EV_MULTIPLICITY 4144#if EV_MULTIPLICITY
3415 assert (("libev: a signal must not be attached to two different loops", 4145 assert (("libev: a signal must not be attached to two different loops",
3416 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4146 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3417 4147
3418 signals [w->signum - 1].loop = EV_A; 4148 signals [w->signum - 1].loop = EV_A;
4149 ECB_MEMORY_FENCE_RELEASE;
3419#endif 4150#endif
3420 4151
3421 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3422 4153
3423#if EV_USE_SIGNALFD 4154#if EV_USE_SIGNALFD
… …
3482 } 4213 }
3483 4214
3484 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
3485} 4216}
3486 4217
3487void noinline 4218noinline
4219void
3488ev_signal_stop (EV_P_ ev_signal *w) 4220ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3489{ 4221{
3490 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3491 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3492 return; 4224 return;
3493 4225
… …
3524#endif 4256#endif
3525 4257
3526#if EV_CHILD_ENABLE 4258#if EV_CHILD_ENABLE
3527 4259
3528void 4260void
3529ev_child_start (EV_P_ ev_child *w) 4261ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3530{ 4262{
3531#if EV_MULTIPLICITY 4263#if EV_MULTIPLICITY
3532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4264 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3533#endif 4265#endif
3534 if (expect_false (ev_is_active (w))) 4266 if (expect_false (ev_is_active (w)))
… …
3541 4273
3542 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
3543} 4275}
3544 4276
3545void 4277void
3546ev_child_stop (EV_P_ ev_child *w) 4278ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3547{ 4279{
3548 clear_pending (EV_A_ (W)w); 4280 clear_pending (EV_A_ (W)w);
3549 if (expect_false (!ev_is_active (w))) 4281 if (expect_false (!ev_is_active (w)))
3550 return; 4282 return;
3551 4283
… …
3568 4300
3569#define DEF_STAT_INTERVAL 5.0074891 4301#define DEF_STAT_INTERVAL 5.0074891
3570#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4302#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3571#define MIN_STAT_INTERVAL 0.1074891 4303#define MIN_STAT_INTERVAL 0.1074891
3572 4304
3573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4305noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3574 4306
3575#if EV_USE_INOTIFY 4307#if EV_USE_INOTIFY
3576 4308
3577/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4309/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3578# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4310# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3579 4311
3580static void noinline 4312noinline
4313static void
3581infy_add (EV_P_ ev_stat *w) 4314infy_add (EV_P_ ev_stat *w)
3582{ 4315{
3583 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); 4316 w->wd = inotify_add_watch (fs_fd, w->path,
4317 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4318 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4319 | IN_DONT_FOLLOW | IN_MASK_ADD);
3584 4320
3585 if (w->wd >= 0) 4321 if (w->wd >= 0)
3586 { 4322 {
3587 struct statfs sfs; 4323 struct statfs sfs;
3588 4324
… …
3592 4328
3593 if (!fs_2625) 4329 if (!fs_2625)
3594 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4330 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3595 else if (!statfs (w->path, &sfs) 4331 else if (!statfs (w->path, &sfs)
3596 && (sfs.f_type == 0x1373 /* devfs */ 4332 && (sfs.f_type == 0x1373 /* devfs */
4333 || sfs.f_type == 0x4006 /* fat */
4334 || sfs.f_type == 0x4d44 /* msdos */
3597 || sfs.f_type == 0xEF53 /* ext2/3 */ 4335 || sfs.f_type == 0xEF53 /* ext2/3 */
4336 || sfs.f_type == 0x72b6 /* jffs2 */
4337 || sfs.f_type == 0x858458f6 /* ramfs */
4338 || sfs.f_type == 0x5346544e /* ntfs */
3598 || sfs.f_type == 0x3153464a /* jfs */ 4339 || sfs.f_type == 0x3153464a /* jfs */
4340 || sfs.f_type == 0x9123683e /* btrfs */
3599 || sfs.f_type == 0x52654973 /* reiser3 */ 4341 || sfs.f_type == 0x52654973 /* reiser3 */
3600 || sfs.f_type == 0x01021994 /* tempfs */ 4342 || sfs.f_type == 0x01021994 /* tmpfs */
3601 || sfs.f_type == 0x58465342 /* xfs */)) 4343 || sfs.f_type == 0x58465342 /* xfs */))
3602 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4344 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3603 else 4345 else
3604 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4346 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3605 } 4347 }
… …
3640 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3641 ev_timer_again (EV_A_ &w->timer); 4383 ev_timer_again (EV_A_ &w->timer);
3642 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3643} 4385}
3644 4386
3645static void noinline 4387noinline
4388static void
3646infy_del (EV_P_ ev_stat *w) 4389infy_del (EV_P_ ev_stat *w)
3647{ 4390{
3648 int slot; 4391 int slot;
3649 int wd = w->wd; 4392 int wd = w->wd;
3650 4393
… …
3657 4400
3658 /* remove this watcher, if others are watching it, they will rearm */ 4401 /* remove this watcher, if others are watching it, they will rearm */
3659 inotify_rm_watch (fs_fd, wd); 4402 inotify_rm_watch (fs_fd, wd);
3660} 4403}
3661 4404
3662static void noinline 4405noinline
4406static void
3663infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4407infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3664{ 4408{
3665 if (slot < 0) 4409 if (slot < 0)
3666 /* overflow, need to check for all hash slots */ 4410 /* overflow, need to check for all hash slots */
3667 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3703 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4447 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3704 ofs += sizeof (struct inotify_event) + ev->len; 4448 ofs += sizeof (struct inotify_event) + ev->len;
3705 } 4449 }
3706} 4450}
3707 4451
3708inline_size void ecb_cold 4452inline_size ecb_cold
4453void
3709ev_check_2625 (EV_P) 4454ev_check_2625 (EV_P)
3710{ 4455{
3711 /* kernels < 2.6.25 are borked 4456 /* kernels < 2.6.25 are borked
3712 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4457 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3713 */ 4458 */
… …
3718} 4463}
3719 4464
3720inline_size int 4465inline_size int
3721infy_newfd (void) 4466infy_newfd (void)
3722{ 4467{
3723#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4468#if defined IN_CLOEXEC && defined IN_NONBLOCK
3724 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4469 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3725 if (fd >= 0) 4470 if (fd >= 0)
3726 return fd; 4471 return fd;
3727#endif 4472#endif
3728 return inotify_init (); 4473 return inotify_init ();
… …
3803#else 4548#else
3804# define EV_LSTAT(p,b) lstat (p, b) 4549# define EV_LSTAT(p,b) lstat (p, b)
3805#endif 4550#endif
3806 4551
3807void 4552void
3808ev_stat_stat (EV_P_ ev_stat *w) 4553ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3809{ 4554{
3810 if (lstat (w->path, &w->attr) < 0) 4555 if (lstat (w->path, &w->attr) < 0)
3811 w->attr.st_nlink = 0; 4556 w->attr.st_nlink = 0;
3812 else if (!w->attr.st_nlink) 4557 else if (!w->attr.st_nlink)
3813 w->attr.st_nlink = 1; 4558 w->attr.st_nlink = 1;
3814} 4559}
3815 4560
3816static void noinline 4561noinline
4562static void
3817stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4563stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3818{ 4564{
3819 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4565 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3820 4566
3821 ev_statdata prev = w->attr; 4567 ev_statdata prev = w->attr;
… …
3852 ev_feed_event (EV_A_ w, EV_STAT); 4598 ev_feed_event (EV_A_ w, EV_STAT);
3853 } 4599 }
3854} 4600}
3855 4601
3856void 4602void
3857ev_stat_start (EV_P_ ev_stat *w) 4603ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3858{ 4604{
3859 if (expect_false (ev_is_active (w))) 4605 if (expect_false (ev_is_active (w)))
3860 return; 4606 return;
3861 4607
3862 ev_stat_stat (EV_A_ w); 4608 ev_stat_stat (EV_A_ w);
… …
3883 4629
3884 EV_FREQUENT_CHECK; 4630 EV_FREQUENT_CHECK;
3885} 4631}
3886 4632
3887void 4633void
3888ev_stat_stop (EV_P_ ev_stat *w) 4634ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3889{ 4635{
3890 clear_pending (EV_A_ (W)w); 4636 clear_pending (EV_A_ (W)w);
3891 if (expect_false (!ev_is_active (w))) 4637 if (expect_false (!ev_is_active (w)))
3892 return; 4638 return;
3893 4639
… …
3909} 4655}
3910#endif 4656#endif
3911 4657
3912#if EV_IDLE_ENABLE 4658#if EV_IDLE_ENABLE
3913void 4659void
3914ev_idle_start (EV_P_ ev_idle *w) 4660ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3915{ 4661{
3916 if (expect_false (ev_is_active (w))) 4662 if (expect_false (ev_is_active (w)))
3917 return; 4663 return;
3918 4664
3919 pri_adjust (EV_A_ (W)w); 4665 pri_adjust (EV_A_ (W)w);
… …
3924 int active = ++idlecnt [ABSPRI (w)]; 4670 int active = ++idlecnt [ABSPRI (w)];
3925 4671
3926 ++idleall; 4672 ++idleall;
3927 ev_start (EV_A_ (W)w, active); 4673 ev_start (EV_A_ (W)w, active);
3928 4674
3929 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4675 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3930 idles [ABSPRI (w)][active - 1] = w; 4676 idles [ABSPRI (w)][active - 1] = w;
3931 } 4677 }
3932 4678
3933 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3934} 4680}
3935 4681
3936void 4682void
3937ev_idle_stop (EV_P_ ev_idle *w) 4683ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 4684{
3939 clear_pending (EV_A_ (W)w); 4685 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4686 if (expect_false (!ev_is_active (w)))
3941 return; 4687 return;
3942 4688
… …
3956} 4702}
3957#endif 4703#endif
3958 4704
3959#if EV_PREPARE_ENABLE 4705#if EV_PREPARE_ENABLE
3960void 4706void
3961ev_prepare_start (EV_P_ ev_prepare *w) 4707ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3962{ 4708{
3963 if (expect_false (ev_is_active (w))) 4709 if (expect_false (ev_is_active (w)))
3964 return; 4710 return;
3965 4711
3966 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3967 4713
3968 ev_start (EV_A_ (W)w, ++preparecnt); 4714 ev_start (EV_A_ (W)w, ++preparecnt);
3969 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4715 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3970 prepares [preparecnt - 1] = w; 4716 prepares [preparecnt - 1] = w;
3971 4717
3972 EV_FREQUENT_CHECK; 4718 EV_FREQUENT_CHECK;
3973} 4719}
3974 4720
3975void 4721void
3976ev_prepare_stop (EV_P_ ev_prepare *w) 4722ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3977{ 4723{
3978 clear_pending (EV_A_ (W)w); 4724 clear_pending (EV_A_ (W)w);
3979 if (expect_false (!ev_is_active (w))) 4725 if (expect_false (!ev_is_active (w)))
3980 return; 4726 return;
3981 4727
… …
3994} 4740}
3995#endif 4741#endif
3996 4742
3997#if EV_CHECK_ENABLE 4743#if EV_CHECK_ENABLE
3998void 4744void
3999ev_check_start (EV_P_ ev_check *w) 4745ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4000{ 4746{
4001 if (expect_false (ev_is_active (w))) 4747 if (expect_false (ev_is_active (w)))
4002 return; 4748 return;
4003 4749
4004 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
4005 4751
4006 ev_start (EV_A_ (W)w, ++checkcnt); 4752 ev_start (EV_A_ (W)w, ++checkcnt);
4007 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4753 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4008 checks [checkcnt - 1] = w; 4754 checks [checkcnt - 1] = w;
4009 4755
4010 EV_FREQUENT_CHECK; 4756 EV_FREQUENT_CHECK;
4011} 4757}
4012 4758
4013void 4759void
4014ev_check_stop (EV_P_ ev_check *w) 4760ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4015{ 4761{
4016 clear_pending (EV_A_ (W)w); 4762 clear_pending (EV_A_ (W)w);
4017 if (expect_false (!ev_is_active (w))) 4763 if (expect_false (!ev_is_active (w)))
4018 return; 4764 return;
4019 4765
… …
4031 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
4032} 4778}
4033#endif 4779#endif
4034 4780
4035#if EV_EMBED_ENABLE 4781#if EV_EMBED_ENABLE
4036void noinline 4782noinline
4783void
4037ev_embed_sweep (EV_P_ ev_embed *w) 4784ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4038{ 4785{
4039 ev_run (w->other, EVRUN_NOWAIT); 4786 ev_run (w->other, EVRUN_NOWAIT);
4040} 4787}
4041 4788
4042static void 4789static void
… …
4090 ev_idle_stop (EV_A_ idle); 4837 ev_idle_stop (EV_A_ idle);
4091} 4838}
4092#endif 4839#endif
4093 4840
4094void 4841void
4095ev_embed_start (EV_P_ ev_embed *w) 4842ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4096{ 4843{
4097 if (expect_false (ev_is_active (w))) 4844 if (expect_false (ev_is_active (w)))
4098 return; 4845 return;
4099 4846
4100 { 4847 {
… …
4121 4868
4122 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
4123} 4870}
4124 4871
4125void 4872void
4126ev_embed_stop (EV_P_ ev_embed *w) 4873ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4127{ 4874{
4128 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
4129 if (expect_false (!ev_is_active (w))) 4876 if (expect_false (!ev_is_active (w)))
4130 return; 4877 return;
4131 4878
… …
4141} 4888}
4142#endif 4889#endif
4143 4890
4144#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
4145void 4892void
4146ev_fork_start (EV_P_ ev_fork *w) 4893ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4147{ 4894{
4148 if (expect_false (ev_is_active (w))) 4895 if (expect_false (ev_is_active (w)))
4149 return; 4896 return;
4150 4897
4151 EV_FREQUENT_CHECK; 4898 EV_FREQUENT_CHECK;
4152 4899
4153 ev_start (EV_A_ (W)w, ++forkcnt); 4900 ev_start (EV_A_ (W)w, ++forkcnt);
4154 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4901 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4155 forks [forkcnt - 1] = w; 4902 forks [forkcnt - 1] = w;
4156 4903
4157 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
4158} 4905}
4159 4906
4160void 4907void
4161ev_fork_stop (EV_P_ ev_fork *w) 4908ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4162{ 4909{
4163 clear_pending (EV_A_ (W)w); 4910 clear_pending (EV_A_ (W)w);
4164 if (expect_false (!ev_is_active (w))) 4911 if (expect_false (!ev_is_active (w)))
4165 return; 4912 return;
4166 4913
… …
4179} 4926}
4180#endif 4927#endif
4181 4928
4182#if EV_CLEANUP_ENABLE 4929#if EV_CLEANUP_ENABLE
4183void 4930void
4184ev_cleanup_start (EV_P_ ev_cleanup *w) 4931ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4185{ 4932{
4186 if (expect_false (ev_is_active (w))) 4933 if (expect_false (ev_is_active (w)))
4187 return; 4934 return;
4188 4935
4189 EV_FREQUENT_CHECK; 4936 EV_FREQUENT_CHECK;
4190 4937
4191 ev_start (EV_A_ (W)w, ++cleanupcnt); 4938 ev_start (EV_A_ (W)w, ++cleanupcnt);
4192 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4939 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4193 cleanups [cleanupcnt - 1] = w; 4940 cleanups [cleanupcnt - 1] = w;
4194 4941
4195 /* cleanup watchers should never keep a refcount on the loop */ 4942 /* cleanup watchers should never keep a refcount on the loop */
4196 ev_unref (EV_A); 4943 ev_unref (EV_A);
4197 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4198} 4945}
4199 4946
4200void 4947void
4201ev_cleanup_stop (EV_P_ ev_cleanup *w) 4948ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4202{ 4949{
4203 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
4204 if (expect_false (!ev_is_active (w))) 4951 if (expect_false (!ev_is_active (w)))
4205 return; 4952 return;
4206 4953
… …
4220} 4967}
4221#endif 4968#endif
4222 4969
4223#if EV_ASYNC_ENABLE 4970#if EV_ASYNC_ENABLE
4224void 4971void
4225ev_async_start (EV_P_ ev_async *w) 4972ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4226{ 4973{
4227 if (expect_false (ev_is_active (w))) 4974 if (expect_false (ev_is_active (w)))
4228 return; 4975 return;
4229 4976
4230 w->sent = 0; 4977 w->sent = 0;
… …
4232 evpipe_init (EV_A); 4979 evpipe_init (EV_A);
4233 4980
4234 EV_FREQUENT_CHECK; 4981 EV_FREQUENT_CHECK;
4235 4982
4236 ev_start (EV_A_ (W)w, ++asynccnt); 4983 ev_start (EV_A_ (W)w, ++asynccnt);
4237 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4984 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4238 asyncs [asynccnt - 1] = w; 4985 asyncs [asynccnt - 1] = w;
4239 4986
4240 EV_FREQUENT_CHECK; 4987 EV_FREQUENT_CHECK;
4241} 4988}
4242 4989
4243void 4990void
4244ev_async_stop (EV_P_ ev_async *w) 4991ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4245{ 4992{
4246 clear_pending (EV_A_ (W)w); 4993 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w))) 4994 if (expect_false (!ev_is_active (w)))
4248 return; 4995 return;
4249 4996
… …
4260 5007
4261 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
4262} 5009}
4263 5010
4264void 5011void
4265ev_async_send (EV_P_ ev_async *w) 5012ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4266{ 5013{
4267 w->sent = 1; 5014 w->sent = 1;
4268 evpipe_write (EV_A_ &async_pending); 5015 evpipe_write (EV_A_ &async_pending);
4269} 5016}
4270#endif 5017#endif
… …
4307 5054
4308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5055 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4309} 5056}
4310 5057
4311void 5058void
4312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5059ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4313{ 5060{
4314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5061 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4315
4316 if (expect_false (!once))
4317 {
4318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4319 return;
4320 }
4321 5062
4322 once->cb = cb; 5063 once->cb = cb;
4323 once->arg = arg; 5064 once->arg = arg;
4324 5065
4325 ev_init (&once->io, once_cb_io); 5066 ev_init (&once->io, once_cb_io);
… …
4338} 5079}
4339 5080
4340/*****************************************************************************/ 5081/*****************************************************************************/
4341 5082
4342#if EV_WALK_ENABLE 5083#if EV_WALK_ENABLE
4343void ecb_cold 5084ecb_cold
5085void
4344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5086ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4345{ 5087{
4346 int i, j; 5088 int i, j;
4347 ev_watcher_list *wl, *wn; 5089 ev_watcher_list *wl, *wn;
4348 5090
4349 if (types & (EV_IO | EV_EMBED)) 5091 if (types & (EV_IO | EV_EMBED))

Diff Legend

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