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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.491 by root, Thu Jun 20 23:14:53 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# define EV_USE_LINUXAIO 0
331#endif
332
302#ifndef EV_USE_INOTIFY 333#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 335# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 336# else
306# define EV_USE_INOTIFY 0 337# define EV_USE_INOTIFY 0
… …
347 378
348#ifndef EV_HEAP_CACHE_AT 379#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 380# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 381#endif
351 382
383#ifdef __ANDROID__
384/* supposedly, android doesn't typedef fd_mask */
385# undef EV_USE_SELECT
386# define EV_USE_SELECT 0
387/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
388# undef EV_USE_CLOCK_SYSCALL
389# define EV_USE_CLOCK_SYSCALL 0
390#endif
391
392/* aix's poll.h seems to cause lots of trouble */
393#ifdef _AIX
394/* AIX has a completely broken poll.h header */
395# undef EV_USE_POLL
396# define EV_USE_POLL 0
397#endif
398
399#if EV_USE_LINUXAIO
400# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
401#endif
402
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 406# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
360# else 411# else
… …
363# endif 414# endif
364#endif 415#endif
365 416
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 418
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
377#endif 422#endif
378 423
… …
386# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
387#endif 432#endif
388 433
389#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
393# endif 446# endif
394#endif 447#endif
395 448
396#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
397# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
403# endif 456# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 457#endif
409 458
410#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 461# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
471/* 520/*
472 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
473 * 522 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 525 * All rights reserved.
477 * 526 *
478 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
498 */ 558 */
499 559
500#ifndef ECB_H 560#ifndef ECB_H
501#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
502 565
503#ifdef _WIN32 566#ifdef _WIN32
504 typedef signed char int8_t; 567 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
516 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
517#else 589#else
518 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
519#endif 608#endif
520 609
521/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 613 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 614 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 615 * an issue with that they should have done it right in the first place.
527 */ 616 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
531 #else 619#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
534#endif 662#endif
535 663
536/*****************************************************************************/ 664/*****************************************************************************/
537 665
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 668
541#if ECB_NO_THREADS || ECB_NO_SMP 669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 675#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
545#endif 684#endif
546 685
547#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 688 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 692 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
718 #elif defined __s390__ || defined __s390x__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
724 #elif defined __alpha__
725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
726 #elif defined __hppa__
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
729 #elif defined __ia64__
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
557 #endif 737 #endif
558 #endif 738 #endif
559#endif 739#endif
560 740
561#ifndef ECB_MEMORY_FENCE 741#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 742 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 755 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) 757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 767 #elif defined _WIN32
572 #include <WinNT.h> 768 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 771 #include <mbarrier.h>
772 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
775 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync ()
576 #endif 777 #endif
577#endif 778#endif
578 779
579#ifndef ECB_MEMORY_FENCE 780#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
794 #endif
795#endif
796
797#ifndef ECB_MEMORY_FENCE
798 #if !ECB_AVOID_PTHREADS
580 /* 799 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 800 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 801 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 802 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 803 * OR provide pthread.h and link against the posix thread library
585 * of your system. 804 * of your system.
586 */ 805 */
587 #include <pthread.h> 806 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 807 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 808 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 809
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 810 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
812 #endif
813#endif
814
815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
817#endif
818
819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 821#endif
596 822
597/*****************************************************************************/ 823/*****************************************************************************/
598 824
599#define ECB_C99 (__STDC_VERSION__ >= 199901L) 825#if ECB_CPP
600
601#if __cplusplus
602 #define ecb_inline static inline 826 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 827#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 828 #define ecb_inline static __inline__
605#elif ECB_C99 829#elif ECB_C99
606 #define ecb_inline static inline 830 #define ecb_inline static inline
… …
620 844
621#define ECB_CONCAT_(a, b) a ## b 845#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a 847#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
625 850
626#define ecb_function_ ecb_inline 851#define ecb_function_ ecb_inline
627 852
628#if ECB_GCC_VERSION(3,1) 853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
629 #define ecb_attribute(attrlist) __attribute__(attrlist) 854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr) 860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
871#else
872 #define ecb_expect(expr,value) (expr)
873#endif
874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 877#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 878 #define ecb_prefetch(addr,rw,locality)
638#endif 879#endif
639 880
640/* no emulation for ecb_decltype */ 881/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5) 882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
642 #define ecb_decltype(x) __decltype(x) 885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
643#elif ECB_GCC_VERSION(3,0) 886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
644 #define ecb_decltype(x) __typeof(x) 887 #define ecb_decltype(x) __typeof__ (x)
645#endif 888#endif
646 889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
647#define ecb_noinline ecb_attribute ((__noinline__)) 907 #define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__)) 908#endif
909
649#define ecb_unused ecb_attribute ((__unused__)) 910#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 911#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__)) 912#define ecb_pure ecb_attribute ((__pure__))
913
914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
922#else
923 #define ecb_noreturn ecb_attribute ((__noreturn__))
924#endif
652 925
653#if ECB_GCC_VERSION(4,3) 926#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 927 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 928 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 929 #define ecb_cold ecb_attribute ((__cold__))
… …
668/* for compatibility to the rest of the world */ 941/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr) 942#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr) 943#define ecb_unlikely(expr) ecb_expect_false (expr)
671 944
672/* count trailing zero bits and count # of one bits */ 945/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4) 946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x) 953 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x) 954 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x) 955 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */ 956 /* no popcountll */
681#else 957#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
683 ecb_function_ int 959 ecb_function_ ecb_const int
684 ecb_ctz32 (uint32_t x) 960 ecb_ctz32 (uint32_t x)
685 { 961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
686 int r = 0; 967 int r = 0;
687 968
688 x &= ~x + 1; /* this isolates the lowest bit */ 969 x &= ~x + 1; /* this isolates the lowest bit */
689 970
690#if ECB_branchless_on_i386 971#if ECB_branchless_on_i386
… …
700 if (x & 0xff00ff00) r += 8; 981 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16; 982 if (x & 0xffff0000) r += 16;
702#endif 983#endif
703 984
704 return r; 985 return r;
986#endif
705 } 987 }
706 988
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
708 ecb_function_ int 990 ecb_function_ ecb_const int
709 ecb_ctz64 (uint64_t x) 991 ecb_ctz64 (uint64_t x)
710 { 992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
711 int shift = x & 0xffffffffU ? 0 : 32; 998 int shift = x & 0xffffffff ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift; 999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
713 } 1001 }
714 1002
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
716 ecb_function_ int 1004 ecb_function_ ecb_const int
717 ecb_popcount32 (uint32_t x) 1005 ecb_popcount32 (uint32_t x)
718 { 1006 {
719 x -= (x >> 1) & 0x55555555; 1007 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f; 1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101; 1010 x *= 0x01010101;
723 1011
724 return x >> 24; 1012 return x >> 24;
725 } 1013 }
726 1014
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
728 ecb_function_ int ecb_ld32 (uint32_t x) 1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
729 { 1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
730 int r = 0; 1023 int r = 0;
731 1024
732 if (x >> 16) { x >>= 16; r += 16; } 1025 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; } 1026 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; } 1027 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; } 1028 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; } 1029 if (x >> 1) { r += 1; }
737 1030
738 return r; 1031 return r;
1032#endif
739 } 1033 }
740 1034
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
742 ecb_function_ int ecb_ld64 (uint64_t x) 1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
743 { 1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
744 int r = 0; 1043 int r = 0;
745 1044
746 if (x >> 32) { x >>= 32; r += 32; } 1045 if (x >> 32) { x >>= 32; r += 32; }
747 1046
748 return r + ecb_ld32 (x); 1047 return r + ecb_ld32 (x);
1048#endif
749 } 1049 }
750#endif 1050#endif
1051
1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1056
1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1059{
1060 return ( (x * 0x0802U & 0x22110U)
1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1062}
1063
1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1066{
1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1070 x = ( x >> 8 ) | ( x << 8);
1071
1072 return x;
1073}
1074
1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1077{
1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1082 x = ( x >> 16 ) | ( x << 16);
1083
1084 return x;
1085}
751 1086
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 1088/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
755ecb_function_ int 1090ecb_function_ ecb_const int
756ecb_popcount64 (uint64_t x) 1091ecb_popcount64 (uint64_t x)
757{ 1092{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759} 1094}
760 1095
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
769 1104
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1105ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1106ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1107ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1108ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778 1113
779#if ECB_GCC_VERSION(4,3) 1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
781 #define ecb_bswap32(x) __builtin_bswap32 (x) 1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x) 1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
783#else 1127#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
785 ecb_function_ uint16_t 1129 ecb_function_ ecb_const uint16_t
786 ecb_bswap16 (uint16_t x) 1130 ecb_bswap16 (uint16_t x)
787 { 1131 {
788 return ecb_rotl16 (x, 8); 1132 return ecb_rotl16 (x, 8);
789 } 1133 }
790 1134
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
792 ecb_function_ uint32_t 1136 ecb_function_ ecb_const uint32_t
793 ecb_bswap32 (uint32_t x) 1137 ecb_bswap32 (uint32_t x)
794 { 1138 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 } 1140 }
797 1141
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
799 ecb_function_ uint64_t 1143 ecb_function_ ecb_const uint64_t
800 ecb_bswap64 (uint64_t x) 1144 ecb_bswap64 (uint64_t x)
801 { 1145 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 } 1147 }
804#endif 1148#endif
805 1149
806#if ECB_GCC_VERSION(4,5) 1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
807 #define ecb_unreachable() __builtin_unreachable () 1151 #define ecb_unreachable() __builtin_unreachable ()
808#else 1152#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
811 ecb_function_ void ecb_unreachable (void) { } 1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
812#endif 1156#endif
813 1157
814/* try to tell the compiler that some condition is definitely true */ 1158/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1160
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
818ecb_function_ unsigned char 1162ecb_inline ecb_const uint32_t
819ecb_byteorder_helper (void) 1163ecb_byteorder_helper (void)
820{ 1164{
821 const uint32_t u = 0x11223344; 1165 /* the union code still generates code under pressure in gcc, */
822 return *(unsigned char *)&u; 1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
823} 1187}
824 1188
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
829 1193
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1194#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else 1196#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1198#endif
1199
1200#if ECB_CPP
1201 template<typename T>
1202 static inline T ecb_div_rd (T val, T div)
1203 {
1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1205 }
1206 template<typename T>
1207 static inline T ecb_div_ru (T val, T div)
1208 {
1209 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1210 }
1211#else
1212 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1213 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1214#endif
835 1215
836#if ecb_cplusplus_does_not_suck 1216#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1217 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1218 template<typename T, int N>
… …
842 } 1222 }
843#else 1223#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1225#endif
846 1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
847#endif 1532#endif
848 1533
849/* ECB.H END */ 1534/* ECB.H END */
1535
1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1537/* if your architecture doesn't need memory fences, e.g. because it is
1538 * single-cpu/core, or if you use libev in a project that doesn't use libev
1539 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1540 * libev, in which cases the memory fences become nops.
1541 * alternatively, you can remove this #error and link against libpthread,
1542 * which will then provide the memory fences.
1543 */
1544# error "memory fences not defined for your architecture, please report"
1545#endif
1546
1547#ifndef ECB_MEMORY_FENCE
1548# define ECB_MEMORY_FENCE do { } while (0)
1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1551#endif
850 1552
851#define expect_false(cond) ecb_expect_false (cond) 1553#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond) 1554#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline 1555#define noinline ecb_noinline
854 1556
855#define inline_size ecb_inline 1557#define inline_size ecb_inline
856 1558
857#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
858# define inline_speed ecb_inline 1560# define inline_speed ecb_inline
859#else 1561#else
860# define inline_speed static noinline 1562# define inline_speed noinline static
861#endif 1563#endif
862 1564
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864 1566
865#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
866# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
867#else 1569#else
868# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
869#endif 1571#endif
870 1572
871#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
872#define EMPTY2(a,b) /* used to suppress some warnings */
873 1574
874typedef ev_watcher *W; 1575typedef ev_watcher *W;
875typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
876typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
877 1578
… …
912#else 1613#else
913 1614
914#include <float.h> 1615#include <float.h>
915 1616
916/* a floor() replacement function, should be independent of ev_tstamp type */ 1617/* a floor() replacement function, should be independent of ev_tstamp type */
1618noinline
917static ev_tstamp noinline 1619static ev_tstamp
918ev_floor (ev_tstamp v) 1620ev_floor (ev_tstamp v)
919{ 1621{
920 /* the choice of shift factor is not terribly important */ 1622 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1623#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1624 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
954 1656
955#ifdef __linux 1657#ifdef __linux
956# include <sys/utsname.h> 1658# include <sys/utsname.h>
957#endif 1659#endif
958 1660
959static unsigned int noinline ecb_cold 1661noinline ecb_cold
1662static unsigned int
960ev_linux_version (void) 1663ev_linux_version (void)
961{ 1664{
962#ifdef __linux 1665#ifdef __linux
963 unsigned int v = 0; 1666 unsigned int v = 0;
964 struct utsname buf; 1667 struct utsname buf;
… …
993} 1696}
994 1697
995/*****************************************************************************/ 1698/*****************************************************************************/
996 1699
997#if EV_AVOID_STDIO 1700#if EV_AVOID_STDIO
998static void noinline ecb_cold 1701noinline ecb_cold
1702static void
999ev_printerr (const char *msg) 1703ev_printerr (const char *msg)
1000{ 1704{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1705 write (STDERR_FILENO, msg, strlen (msg));
1002} 1706}
1003#endif 1707#endif
1004 1708
1005static void (*syserr_cb)(const char *msg); 1709static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1006 1710
1007void ecb_cold 1711ecb_cold
1712void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1713ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1009{ 1714{
1010 syserr_cb = cb; 1715 syserr_cb = cb;
1011} 1716}
1012 1717
1013static void noinline ecb_cold 1718noinline ecb_cold
1719static void
1014ev_syserr (const char *msg) 1720ev_syserr (const char *msg)
1015{ 1721{
1016 if (!msg) 1722 if (!msg)
1017 msg = "(libev) system error"; 1723 msg = "(libev) system error";
1018 1724
… …
1031 abort (); 1737 abort ();
1032 } 1738 }
1033} 1739}
1034 1740
1035static void * 1741static void *
1036ev_realloc_emul (void *ptr, long size) 1742ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1037{ 1743{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1744 /* some systems, notably openbsd and darwin, fail to properly
1042 * implement realloc (x, 0) (as required by both ansi c-89 and 1745 * implement realloc (x, 0) (as required by both ansi c-89 and
1043 * the single unix specification, so work around them here. 1746 * the single unix specification, so work around them here.
1747 * recently, also (at least) fedora and debian started breaking it,
1748 * despite documenting it otherwise.
1044 */ 1749 */
1045 1750
1046 if (size) 1751 if (size)
1047 return realloc (ptr, size); 1752 return realloc (ptr, size);
1048 1753
1049 free (ptr); 1754 free (ptr);
1050 return 0; 1755 return 0;
1051#endif
1052} 1756}
1053 1757
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1758static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1055 1759
1056void ecb_cold 1760ecb_cold
1761void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1762ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1058{ 1763{
1059 alloc = cb; 1764 alloc = cb;
1060} 1765}
1061 1766
1062inline_speed void * 1767inline_speed void *
… …
1089typedef struct 1794typedef struct
1090{ 1795{
1091 WL head; 1796 WL head;
1092 unsigned char events; /* the events watched for */ 1797 unsigned char events; /* the events watched for */
1093 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1798 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1799 unsigned char emask; /* some backends store the actual kernel mask in here */
1095 unsigned char unused; 1800 unsigned char unused;
1096#if EV_USE_EPOLL 1801#if EV_USE_EPOLL
1097 unsigned int egen; /* generation counter to counter epoll bugs */ 1802 unsigned int egen; /* generation counter to counter epoll bugs */
1098#endif 1803#endif
1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1804#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1150 #undef VAR 1855 #undef VAR
1151 }; 1856 };
1152 #include "ev_wrap.h" 1857 #include "ev_wrap.h"
1153 1858
1154 static struct ev_loop default_loop_struct; 1859 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 1860 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 1861
1157#else 1862#else
1158 1863
1159 ev_tstamp ev_rt_now; 1864 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 1865 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 1866 #include "ev_vars.h"
1162 #undef VAR 1867 #undef VAR
1163 1868
1164 static int ev_default_loop_ptr; 1869 static int ev_default_loop_ptr;
… …
1179 1884
1180/*****************************************************************************/ 1885/*****************************************************************************/
1181 1886
1182#ifndef EV_HAVE_EV_TIME 1887#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 1888ev_tstamp
1184ev_time (void) 1889ev_time (void) EV_NOEXCEPT
1185{ 1890{
1186#if EV_USE_REALTIME 1891#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 1892 if (expect_true (have_realtime))
1188 { 1893 {
1189 struct timespec ts; 1894 struct timespec ts;
… …
1213 return ev_time (); 1918 return ev_time ();
1214} 1919}
1215 1920
1216#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1217ev_tstamp 1922ev_tstamp
1218ev_now (EV_P) 1923ev_now (EV_P) EV_NOEXCEPT
1219{ 1924{
1220 return ev_rt_now; 1925 return ev_rt_now;
1221} 1926}
1222#endif 1927#endif
1223 1928
1224void 1929void
1225ev_sleep (ev_tstamp delay) 1930ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1226{ 1931{
1227 if (delay > 0.) 1932 if (delay > 0.)
1228 { 1933 {
1229#if EV_USE_NANOSLEEP 1934#if EV_USE_NANOSLEEP
1230 struct timespec ts; 1935 struct timespec ts;
1231 1936
1232 EV_TS_SET (ts, delay); 1937 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 1938 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 1939#elif defined _WIN32
1940 /* maybe this should round up, as ms is very low resolution */
1941 /* compared to select (µs) or nanosleep (ns) */
1235 Sleep ((unsigned long)(delay * 1e3)); 1942 Sleep ((unsigned long)(delay * 1e3));
1236#else 1943#else
1237 struct timeval tv; 1944 struct timeval tv;
1238 1945
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1946 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1258 1965
1259 do 1966 do
1260 ncur <<= 1; 1967 ncur <<= 1;
1261 while (cnt > ncur); 1968 while (cnt > ncur);
1262 1969
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1970 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1971 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 1972 {
1266 ncur *= elem; 1973 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1974 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 1975 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 1977 }
1271 1978
1272 return ncur; 1979 return ncur;
1273} 1980}
1274 1981
1275static void * noinline ecb_cold 1982noinline ecb_cold
1983static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 1984array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 1985{
1278 *cur = array_nextsize (elem, *cur, cnt); 1986 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 1987 return ev_realloc (base, elem * *cur);
1280} 1988}
1281 1989
1990#define array_needsize_noinit(base,count)
1991
1282#define array_init_zero(base,count) \ 1992#define array_needsize_zerofill(base,count) \
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1993 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1284 1994
1285#define array_needsize(type,base,cur,cnt,init) \ 1995#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 1996 if (expect_false ((cnt) > (cur))) \
1287 { \ 1997 { \
1288 int ecb_unused ocur_ = (cur); \ 1998 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 1999 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 2000 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 2001 init ((base) + (ocur_), (cur) - ocur_); \
1292 } 2002 }
1293 2003
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2015 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 2016
1307/*****************************************************************************/ 2017/*****************************************************************************/
1308 2018
1309/* dummy callback for pending events */ 2019/* dummy callback for pending events */
1310static void noinline 2020noinline
2021static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 2022pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 2023{
1313} 2024}
1314 2025
1315void noinline 2026noinline
2027void
1316ev_feed_event (EV_P_ void *w, int revents) 2028ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1317{ 2029{
1318 W w_ = (W)w; 2030 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 2031 int pri = ABSPRI (w_);
1320 2032
1321 if (expect_false (w_->pending)) 2033 if (expect_false (w_->pending))
1322 pendings [pri][w_->pending - 1].events |= revents; 2034 pendings [pri][w_->pending - 1].events |= revents;
1323 else 2035 else
1324 { 2036 {
1325 w_->pending = ++pendingcnt [pri]; 2037 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2038 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1327 pendings [pri][w_->pending - 1].w = w_; 2039 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2040 pendings [pri][w_->pending - 1].events = revents;
1329 } 2041 }
2042
2043 pendingpri = NUMPRI - 1;
1330} 2044}
1331 2045
1332inline_speed void 2046inline_speed void
1333feed_reverse (EV_P_ W w) 2047feed_reverse (EV_P_ W w)
1334{ 2048{
1335 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2049 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1336 rfeeds [rfeedcnt++] = w; 2050 rfeeds [rfeedcnt++] = w;
1337} 2051}
1338 2052
1339inline_size void 2053inline_size void
1340feed_reverse_done (EV_P_ int revents) 2054feed_reverse_done (EV_P_ int revents)
… …
1380 if (expect_true (!anfd->reify)) 2094 if (expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2095 fd_event_nocheck (EV_A_ fd, revents);
1382} 2096}
1383 2097
1384void 2098void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2099ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1386{ 2100{
1387 if (fd >= 0 && fd < anfdmax) 2101 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2102 fd_event_nocheck (EV_A_ fd, revents);
1389} 2103}
1390 2104
… …
1448 2162
1449 fdchangecnt = 0; 2163 fdchangecnt = 0;
1450} 2164}
1451 2165
1452/* something about the given fd changed */ 2166/* something about the given fd changed */
1453inline_size void 2167inline_size
2168void
1454fd_change (EV_P_ int fd, int flags) 2169fd_change (EV_P_ int fd, int flags)
1455{ 2170{
1456 unsigned char reify = anfds [fd].reify; 2171 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2172 anfds [fd].reify |= flags;
1458 2173
1459 if (expect_true (!reify)) 2174 if (expect_true (!reify))
1460 { 2175 {
1461 ++fdchangecnt; 2176 ++fdchangecnt;
1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2177 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1463 fdchanges [fdchangecnt - 1] = fd; 2178 fdchanges [fdchangecnt - 1] = fd;
1464 } 2179 }
1465} 2180}
1466 2181
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2182/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1468inline_speed void ecb_cold 2183inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2184fd_kill (EV_P_ int fd)
1470{ 2185{
1471 ev_io *w; 2186 ev_io *w;
1472 2187
1473 while ((w = (ev_io *)anfds [fd].head)) 2188 while ((w = (ev_io *)anfds [fd].head))
… …
1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2191 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1477 } 2192 }
1478} 2193}
1479 2194
1480/* check whether the given fd is actually valid, for error recovery */ 2195/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2196inline_size ecb_cold int
1482fd_valid (int fd) 2197fd_valid (int fd)
1483{ 2198{
1484#ifdef _WIN32 2199#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2200 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2201#else
1487 return fcntl (fd, F_GETFD) != -1; 2202 return fcntl (fd, F_GETFD) != -1;
1488#endif 2203#endif
1489} 2204}
1490 2205
1491/* called on EBADF to verify fds */ 2206/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2207noinline ecb_cold
2208static void
1493fd_ebadf (EV_P) 2209fd_ebadf (EV_P)
1494{ 2210{
1495 int fd; 2211 int fd;
1496 2212
1497 for (fd = 0; fd < anfdmax; ++fd) 2213 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2215 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2216 fd_kill (EV_A_ fd);
1501} 2217}
1502 2218
1503/* called on ENOMEM in select/poll to kill some fds and retry */ 2219/* called on ENOMEM in select/poll to kill some fds and retry */
1504static void noinline ecb_cold 2220noinline ecb_cold
2221static void
1505fd_enomem (EV_P) 2222fd_enomem (EV_P)
1506{ 2223{
1507 int fd; 2224 int fd;
1508 2225
1509 for (fd = anfdmax; fd--; ) 2226 for (fd = anfdmax; fd--; )
… …
1513 break; 2230 break;
1514 } 2231 }
1515} 2232}
1516 2233
1517/* usually called after fork if backend needs to re-arm all fds from scratch */ 2234/* usually called after fork if backend needs to re-arm all fds from scratch */
1518static void noinline 2235noinline
2236static void
1519fd_rearm_all (EV_P) 2237fd_rearm_all (EV_P)
1520{ 2238{
1521 int fd; 2239 int fd;
1522 2240
1523 for (fd = 0; fd < anfdmax; ++fd) 2241 for (fd = 0; fd < anfdmax; ++fd)
… …
1704 2422
1705/*****************************************************************************/ 2423/*****************************************************************************/
1706 2424
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2425#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2426
1709static void noinline ecb_cold 2427noinline ecb_cold
2428static void
1710evpipe_init (EV_P) 2429evpipe_init (EV_P)
1711{ 2430{
1712 if (!ev_is_active (&pipe_w)) 2431 if (!ev_is_active (&pipe_w))
1713 { 2432 {
2433 int fds [2];
2434
1714# if EV_USE_EVENTFD 2435# if EV_USE_EVENTFD
2436 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2437 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2438 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2439 fds [1] = eventfd (0, 0);
1718 2440
1719 if (evfd >= 0) 2441 if (fds [1] < 0)
2442# endif
1720 { 2443 {
2444 while (pipe (fds))
2445 ev_syserr ("(libev) error creating signal/async pipe");
2446
2447 fd_intern (fds [0]);
2448 }
2449
1721 evpipe [0] = -1; 2450 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2451
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2452 if (evpipe [1] < 0)
2453 evpipe [1] = fds [1]; /* first call, set write fd */
2454 else
2455 {
2456 /* on subsequent calls, do not change evpipe [1] */
2457 /* so that evpipe_write can always rely on its value. */
2458 /* this branch does not do anything sensible on windows, */
2459 /* so must not be executed on windows */
2460
2461 dup2 (fds [1], evpipe [1]);
2462 close (fds [1]);
2463 }
2464
2465 fd_intern (evpipe [1]);
2466
2467 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2468 ev_io_start (EV_A_ &pipe_w);
2469 ev_unref (EV_A); /* watcher should not keep loop alive */
2470 }
2471}
2472
2473inline_speed void
2474evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2475{
2476 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2477
2478 if (expect_true (*flag))
2479 return;
2480
2481 *flag = 1;
2482 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2483
2484 pipe_write_skipped = 1;
2485
2486 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2487
2488 if (pipe_write_wanted)
2489 {
2490 int old_errno;
2491
2492 pipe_write_skipped = 0;
2493 ECB_MEMORY_FENCE_RELEASE;
2494
2495 old_errno = errno; /* save errno because write will clobber it */
2496
2497#if EV_USE_EVENTFD
2498 if (evpipe [0] < 0)
2499 {
2500 uint64_t counter = 1;
2501 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2502 }
1725 else 2503 else
1726# endif 2504#endif
1727 { 2505 {
1728 while (pipe (evpipe)) 2506#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2507 WSABUF buf;
1730 2508 DWORD sent;
1731 fd_intern (evpipe [0]); 2509 buf.buf = (char *)&buf;
1732 fd_intern (evpipe [1]); 2510 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2511 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2512#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2513 write (evpipe [1], &(evpipe [1]), 1);
2514#endif
1778 } 2515 }
1779 2516
1780 errno = old_errno; 2517 errno = old_errno;
1781 } 2518 }
1782} 2519}
… …
1789 int i; 2526 int i;
1790 2527
1791 if (revents & EV_READ) 2528 if (revents & EV_READ)
1792 { 2529 {
1793#if EV_USE_EVENTFD 2530#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2531 if (evpipe [0] < 0)
1795 { 2532 {
1796 uint64_t counter; 2533 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2534 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2535 }
1799 else 2536 else
1800#endif 2537#endif
1801 { 2538 {
1802 char dummy; 2539 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2540#ifdef _WIN32
2541 WSABUF buf;
2542 DWORD recvd;
2543 DWORD flags = 0;
2544 buf.buf = dummy;
2545 buf.len = sizeof (dummy);
2546 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2547#else
1804 read (evpipe [0], &dummy, 1); 2548 read (evpipe [0], &dummy, sizeof (dummy));
2549#endif
1805 } 2550 }
1806 } 2551 }
1807 2552
1808 pipe_write_skipped = 0; 2553 pipe_write_skipped = 0;
2554
2555 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2556
1810#if EV_SIGNAL_ENABLE 2557#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2558 if (sig_pending)
1812 { 2559 {
1813 sig_pending = 0; 2560 sig_pending = 0;
2561
2562 ECB_MEMORY_FENCE;
1814 2563
1815 for (i = EV_NSIG - 1; i--; ) 2564 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2565 if (expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2566 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2567 }
… …
1820 2569
1821#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1822 if (async_pending) 2571 if (async_pending)
1823 { 2572 {
1824 async_pending = 0; 2573 async_pending = 0;
2574
2575 ECB_MEMORY_FENCE;
1825 2576
1826 for (i = asynccnt; i--; ) 2577 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2578 if (asyncs [i]->sent)
1828 { 2579 {
1829 asyncs [i]->sent = 0; 2580 asyncs [i]->sent = 0;
2581 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2582 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2583 }
1832 } 2584 }
1833#endif 2585#endif
1834} 2586}
1835 2587
1836/*****************************************************************************/ 2588/*****************************************************************************/
1837 2589
1838void 2590void
1839ev_feed_signal (int signum) 2591ev_feed_signal (int signum) EV_NOEXCEPT
1840{ 2592{
1841#if EV_MULTIPLICITY 2593#if EV_MULTIPLICITY
2594 EV_P;
2595 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2596 EV_A = signals [signum - 1].loop;
1843 2597
1844 if (!EV_A) 2598 if (!EV_A)
1845 return; 2599 return;
1846#endif 2600#endif
1847 2601
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2602 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2603 evpipe_write (EV_A_ &sig_pending);
1853} 2604}
1854 2605
1855static void 2606static void
… …
1860#endif 2611#endif
1861 2612
1862 ev_feed_signal (signum); 2613 ev_feed_signal (signum);
1863} 2614}
1864 2615
1865void noinline 2616noinline
2617void
1866ev_feed_signal_event (EV_P_ int signum) 2618ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1867{ 2619{
1868 WL w; 2620 WL w;
1869 2621
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2622 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2623 return;
1872 2624
1873 --signum; 2625 --signum;
1874 2626
1875#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
… …
1879 if (expect_false (signals [signum].loop != EV_A)) 2631 if (expect_false (signals [signum].loop != EV_A))
1880 return; 2632 return;
1881#endif 2633#endif
1882 2634
1883 signals [signum].pending = 0; 2635 signals [signum].pending = 0;
2636 ECB_MEMORY_FENCE_RELEASE;
1884 2637
1885 for (w = signals [signum].head; w; w = w->next) 2638 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2639 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2640}
1888 2641
… …
1976# include "ev_port.c" 2729# include "ev_port.c"
1977#endif 2730#endif
1978#if EV_USE_KQUEUE 2731#if EV_USE_KQUEUE
1979# include "ev_kqueue.c" 2732# include "ev_kqueue.c"
1980#endif 2733#endif
2734#if EV_USE_LINUXAIO
2735# include "ev_linuxaio.c"
2736#endif
1981#if EV_USE_EPOLL 2737#if EV_USE_EPOLL
1982# include "ev_epoll.c" 2738# include "ev_epoll.c"
1983#endif 2739#endif
1984#if EV_USE_POLL 2740#if EV_USE_POLL
1985# include "ev_poll.c" 2741# include "ev_poll.c"
1986#endif 2742#endif
1987#if EV_USE_SELECT 2743#if EV_USE_SELECT
1988# include "ev_select.c" 2744# include "ev_select.c"
1989#endif 2745#endif
1990 2746
1991int ecb_cold 2747ecb_cold int
1992ev_version_major (void) 2748ev_version_major (void) EV_NOEXCEPT
1993{ 2749{
1994 return EV_VERSION_MAJOR; 2750 return EV_VERSION_MAJOR;
1995} 2751}
1996 2752
1997int ecb_cold 2753ecb_cold int
1998ev_version_minor (void) 2754ev_version_minor (void) EV_NOEXCEPT
1999{ 2755{
2000 return EV_VERSION_MINOR; 2756 return EV_VERSION_MINOR;
2001} 2757}
2002 2758
2003/* return true if we are running with elevated privileges and should ignore env variables */ 2759/* return true if we are running with elevated privileges and should ignore env variables */
2004int inline_size ecb_cold 2760inline_size ecb_cold int
2005enable_secure (void) 2761enable_secure (void)
2006{ 2762{
2007#ifdef _WIN32 2763#ifdef _WIN32
2008 return 0; 2764 return 0;
2009#else 2765#else
2010 return getuid () != geteuid () 2766 return getuid () != geteuid ()
2011 || getgid () != getegid (); 2767 || getgid () != getegid ();
2012#endif 2768#endif
2013} 2769}
2014 2770
2015unsigned int ecb_cold 2771ecb_cold
2772unsigned int
2016ev_supported_backends (void) 2773ev_supported_backends (void) EV_NOEXCEPT
2017{ 2774{
2018 unsigned int flags = 0; 2775 unsigned int flags = 0;
2019 2776
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2777 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2778 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2022 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2779 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2780 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2023 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2781 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2782 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2025 2783
2026 return flags; 2784 return flags;
2027} 2785}
2028 2786
2029unsigned int ecb_cold 2787ecb_cold
2788unsigned int
2030ev_recommended_backends (void) 2789ev_recommended_backends (void) EV_NOEXCEPT
2031{ 2790{
2032 unsigned int flags = ev_supported_backends (); 2791 unsigned int flags = ev_supported_backends ();
2033 2792
2034#ifndef __NetBSD__ 2793#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 2794 /* kqueue is borked on everything but netbsd apparently */
… …
2043#endif 2802#endif
2044#ifdef __FreeBSD__ 2803#ifdef __FreeBSD__
2045 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2804 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2046#endif 2805#endif
2047 2806
2807 /* TODO: linuxaio is very experimental */
2808 flags &= ~EVBACKEND_LINUXAIO;
2809
2048 return flags; 2810 return flags;
2049} 2811}
2050 2812
2051unsigned int ecb_cold 2813ecb_cold
2814unsigned int
2052ev_embeddable_backends (void) 2815ev_embeddable_backends (void) EV_NOEXCEPT
2053{ 2816{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2817 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 2818
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2819 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2820 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2059 2822
2060 return flags; 2823 return flags;
2061} 2824}
2062 2825
2063unsigned int 2826unsigned int
2064ev_backend (EV_P) 2827ev_backend (EV_P) EV_NOEXCEPT
2065{ 2828{
2066 return backend; 2829 return backend;
2067} 2830}
2068 2831
2069#if EV_FEATURE_API 2832#if EV_FEATURE_API
2070unsigned int 2833unsigned int
2071ev_iteration (EV_P) 2834ev_iteration (EV_P) EV_NOEXCEPT
2072{ 2835{
2073 return loop_count; 2836 return loop_count;
2074} 2837}
2075 2838
2076unsigned int 2839unsigned int
2077ev_depth (EV_P) 2840ev_depth (EV_P) EV_NOEXCEPT
2078{ 2841{
2079 return loop_depth; 2842 return loop_depth;
2080} 2843}
2081 2844
2082void 2845void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2846ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2084{ 2847{
2085 io_blocktime = interval; 2848 io_blocktime = interval;
2086} 2849}
2087 2850
2088void 2851void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2090{ 2853{
2091 timeout_blocktime = interval; 2854 timeout_blocktime = interval;
2092} 2855}
2093 2856
2094void 2857void
2095ev_set_userdata (EV_P_ void *data) 2858ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2096{ 2859{
2097 userdata = data; 2860 userdata = data;
2098} 2861}
2099 2862
2100void * 2863void *
2101ev_userdata (EV_P) 2864ev_userdata (EV_P) EV_NOEXCEPT
2102{ 2865{
2103 return userdata; 2866 return userdata;
2104} 2867}
2105 2868
2106void 2869void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2870ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2108{ 2871{
2109 invoke_cb = invoke_pending_cb; 2872 invoke_cb = invoke_pending_cb;
2110} 2873}
2111 2874
2112void 2875void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2876ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2114{ 2877{
2115 release_cb = release; 2878 release_cb = release;
2116 acquire_cb = acquire; 2879 acquire_cb = acquire;
2117} 2880}
2118#endif 2881#endif
2119 2882
2120/* initialise a loop structure, must be zero-initialised */ 2883/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 2884noinline ecb_cold
2885static void
2122loop_init (EV_P_ unsigned int flags) 2886loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2123{ 2887{
2124 if (!backend) 2888 if (!backend)
2125 { 2889 {
2126 origflags = flags; 2890 origflags = flags;
2127 2891
… …
2172#if EV_ASYNC_ENABLE 2936#if EV_ASYNC_ENABLE
2173 async_pending = 0; 2937 async_pending = 0;
2174#endif 2938#endif
2175 pipe_write_skipped = 0; 2939 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 2940 pipe_write_wanted = 0;
2941 evpipe [0] = -1;
2942 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 2943#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2944 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 2945#endif
2180#if EV_USE_SIGNALFD 2946#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2947 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2183 2949
2184 if (!(flags & EVBACKEND_MASK)) 2950 if (!(flags & EVBACKEND_MASK))
2185 flags |= ev_recommended_backends (); 2951 flags |= ev_recommended_backends ();
2186 2952
2187#if EV_USE_IOCP 2953#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2954 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif 2955#endif
2190#if EV_USE_PORT 2956#if EV_USE_PORT
2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2957 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2192#endif 2958#endif
2193#if EV_USE_KQUEUE 2959#if EV_USE_KQUEUE
2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2961#endif
2962#if EV_USE_LINUXAIO
2963 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2195#endif 2964#endif
2196#if EV_USE_EPOLL 2965#if EV_USE_EPOLL
2197 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2198#endif 2967#endif
2199#if EV_USE_POLL 2968#if EV_USE_POLL
2200 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2201#endif 2970#endif
2202#if EV_USE_SELECT 2971#if EV_USE_SELECT
2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2204#endif 2973#endif
2205 2974
2206 ev_prepare_init (&pending_w, pendingcb); 2975 ev_prepare_init (&pending_w, pendingcb);
2207 2976
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2977#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2211#endif 2980#endif
2212 } 2981 }
2213} 2982}
2214 2983
2215/* free up a loop structure */ 2984/* free up a loop structure */
2216void ecb_cold 2985ecb_cold
2986void
2217ev_loop_destroy (EV_P) 2987ev_loop_destroy (EV_P)
2218{ 2988{
2219 int i; 2989 int i;
2220 2990
2221#if EV_MULTIPLICITY 2991#if EV_MULTIPLICITY
… …
2232 EV_INVOKE_PENDING; 3002 EV_INVOKE_PENDING;
2233 } 3003 }
2234#endif 3004#endif
2235 3005
2236#if EV_CHILD_ENABLE 3006#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 3007 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 3008 {
2239 ev_ref (EV_A); /* child watcher */ 3009 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 3010 ev_signal_stop (EV_A_ &childev);
2241 } 3011 }
2242#endif 3012#endif
… …
2244 if (ev_is_active (&pipe_w)) 3014 if (ev_is_active (&pipe_w))
2245 { 3015 {
2246 /*ev_ref (EV_A);*/ 3016 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 3017 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 3018
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 3019 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 3020 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 3021 }
2260 3022
2261#if EV_USE_SIGNALFD 3023#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 3024 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 3025 close (sigfd);
… …
2270 3032
2271 if (backend_fd >= 0) 3033 if (backend_fd >= 0)
2272 close (backend_fd); 3034 close (backend_fd);
2273 3035
2274#if EV_USE_IOCP 3036#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3037 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif 3038#endif
2277#if EV_USE_PORT 3039#if EV_USE_PORT
2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3040 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2279#endif 3041#endif
2280#if EV_USE_KQUEUE 3042#if EV_USE_KQUEUE
2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3043 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3044#endif
3045#if EV_USE_LINUXAIO
3046 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2282#endif 3047#endif
2283#if EV_USE_EPOLL 3048#if EV_USE_EPOLL
2284 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3049 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2285#endif 3050#endif
2286#if EV_USE_POLL 3051#if EV_USE_POLL
2287 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3052 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2288#endif 3053#endif
2289#if EV_USE_SELECT 3054#if EV_USE_SELECT
2290 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3055 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2291#endif 3056#endif
2292 3057
2293 for (i = NUMPRI; i--; ) 3058 for (i = NUMPRI; i--; )
2294 { 3059 {
2295 array_free (pending, [i]); 3060 array_free (pending, [i]);
… …
2337 3102
2338inline_size void 3103inline_size void
2339loop_fork (EV_P) 3104loop_fork (EV_P)
2340{ 3105{
2341#if EV_USE_PORT 3106#if EV_USE_PORT
2342 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3107 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2343#endif 3108#endif
2344#if EV_USE_KQUEUE 3109#if EV_USE_KQUEUE
2345 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3110 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3111#endif
3112#if EV_USE_LINUXAIO
3113 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2346#endif 3114#endif
2347#if EV_USE_EPOLL 3115#if EV_USE_EPOLL
2348 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3116 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2349#endif 3117#endif
2350#if EV_USE_INOTIFY 3118#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3119 infy_fork (EV_A);
2352#endif 3120#endif
2353 3121
3122#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3123 if (ev_is_active (&pipe_w) && postfork != 2)
2355 { 3124 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3125 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3126
2358 ev_ref (EV_A); 3127 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3128 ev_io_stop (EV_A_ &pipe_w);
2360 3129
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3130 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3131 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]);
2370 }
2371 3132
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A); 3133 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */ 3134 /* iterate over everything, in case we missed something before */
2375 pipecb (EV_A_ &pipe_w, EV_READ); 3135 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2376#endif
2377 } 3136 }
3137#endif
2378 3138
2379 postfork = 0; 3139 postfork = 0;
2380} 3140}
2381 3141
2382#if EV_MULTIPLICITY 3142#if EV_MULTIPLICITY
2383 3143
3144ecb_cold
2384struct ev_loop * ecb_cold 3145struct ev_loop *
2385ev_loop_new (unsigned int flags) 3146ev_loop_new (unsigned int flags) EV_NOEXCEPT
2386{ 3147{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3148 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3149
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3150 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3151 loop_init (EV_A_ flags);
… …
2397} 3158}
2398 3159
2399#endif /* multiplicity */ 3160#endif /* multiplicity */
2400 3161
2401#if EV_VERIFY 3162#if EV_VERIFY
2402static void noinline ecb_cold 3163noinline ecb_cold
3164static void
2403verify_watcher (EV_P_ W w) 3165verify_watcher (EV_P_ W w)
2404{ 3166{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3167 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3168
2407 if (w->pending) 3169 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3170 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3171}
2410 3172
2411static void noinline ecb_cold 3173noinline ecb_cold
3174static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3175verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3176{
2414 int i; 3177 int i;
2415 3178
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3179 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3184
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3185 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3186 }
2424} 3187}
2425 3188
2426static void noinline ecb_cold 3189noinline ecb_cold
3190static void
2427array_verify (EV_P_ W *ws, int cnt) 3191array_verify (EV_P_ W *ws, int cnt)
2428{ 3192{
2429 while (cnt--) 3193 while (cnt--)
2430 { 3194 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3195 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3198}
2435#endif 3199#endif
2436 3200
2437#if EV_FEATURE_API 3201#if EV_FEATURE_API
2438void ecb_cold 3202void ecb_cold
2439ev_verify (EV_P) 3203ev_verify (EV_P) EV_NOEXCEPT
2440{ 3204{
2441#if EV_VERIFY 3205#if EV_VERIFY
2442 int i; 3206 int i;
2443 WL w; 3207 WL w, w2;
2444 3208
2445 assert (activecnt >= -1); 3209 assert (activecnt >= -1);
2446 3210
2447 assert (fdchangemax >= fdchangecnt); 3211 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3212 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3213 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3214
2451 assert (anfdmax >= 0); 3215 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3216 for (i = 0; i < anfdmax; ++i)
3217 {
3218 int j = 0;
3219
2453 for (w = anfds [i].head; w; w = w->next) 3220 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3221 {
2455 verify_watcher (EV_A_ (W)w); 3222 verify_watcher (EV_A_ (W)w);
3223
3224 if (j++ & 1)
3225 {
3226 assert (("libev: io watcher list contains a loop", w != w2));
3227 w2 = w2->next;
3228 }
3229
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3230 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3231 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3232 }
3233 }
2459 3234
2460 assert (timermax >= timercnt); 3235 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3236 verify_heap (EV_A_ timers, timercnt);
2462 3237
2463#if EV_PERIODIC_ENABLE 3238#if EV_PERIODIC_ENABLE
… …
2509#endif 3284#endif
2510} 3285}
2511#endif 3286#endif
2512 3287
2513#if EV_MULTIPLICITY 3288#if EV_MULTIPLICITY
3289ecb_cold
2514struct ev_loop * ecb_cold 3290struct ev_loop *
2515#else 3291#else
2516int 3292int
2517#endif 3293#endif
2518ev_default_loop (unsigned int flags) 3294ev_default_loop (unsigned int flags) EV_NOEXCEPT
2519{ 3295{
2520 if (!ev_default_loop_ptr) 3296 if (!ev_default_loop_ptr)
2521 { 3297 {
2522#if EV_MULTIPLICITY 3298#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3299 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3318
2543 return ev_default_loop_ptr; 3319 return ev_default_loop_ptr;
2544} 3320}
2545 3321
2546void 3322void
2547ev_loop_fork (EV_P) 3323ev_loop_fork (EV_P) EV_NOEXCEPT
2548{ 3324{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3325 postfork = 1;
2550} 3326}
2551 3327
2552/*****************************************************************************/ 3328/*****************************************************************************/
2553 3329
2554void 3330void
… …
2556{ 3332{
2557 EV_CB_INVOKE ((W)w, revents); 3333 EV_CB_INVOKE ((W)w, revents);
2558} 3334}
2559 3335
2560unsigned int 3336unsigned int
2561ev_pending_count (EV_P) 3337ev_pending_count (EV_P) EV_NOEXCEPT
2562{ 3338{
2563 int pri; 3339 int pri;
2564 unsigned int count = 0; 3340 unsigned int count = 0;
2565 3341
2566 for (pri = NUMPRI; pri--; ) 3342 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3343 count += pendingcnt [pri];
2568 3344
2569 return count; 3345 return count;
2570} 3346}
2571 3347
2572void noinline 3348noinline
3349void
2573ev_invoke_pending (EV_P) 3350ev_invoke_pending (EV_P)
2574{ 3351{
2575 int pri; 3352 pendingpri = NUMPRI;
2576 3353
2577 for (pri = NUMPRI; pri--; ) 3354 do
3355 {
3356 --pendingpri;
3357
3358 /* pendingpri possibly gets modified in the inner loop */
2578 while (pendingcnt [pri]) 3359 while (pendingcnt [pendingpri])
2579 { 3360 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3361 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3362
2582 p->w->pending = 0; 3363 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3364 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3365 EV_FREQUENT_CHECK;
2585 } 3366 }
3367 }
3368 while (pendingpri);
2586} 3369}
2587 3370
2588#if EV_IDLE_ENABLE 3371#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3372/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3373/* only when higher priorities are idle" logic */
… …
2648 } 3431 }
2649} 3432}
2650 3433
2651#if EV_PERIODIC_ENABLE 3434#if EV_PERIODIC_ENABLE
2652 3435
2653static void noinline 3436noinline
3437static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3438periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3439{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3440 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3441 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3442
… …
2680{ 3464{
2681 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
2682 3466
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3467 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3468 {
2685 int feed_count = 0;
2686
2687 do 3469 do
2688 { 3470 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3471 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3472
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3473 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3500 }
2719} 3501}
2720 3502
2721/* simply recalculate all periodics */ 3503/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3504/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3505noinline ecb_cold
3506static void
2724periodics_reschedule (EV_P) 3507periodics_reschedule (EV_P)
2725{ 3508{
2726 int i; 3509 int i;
2727 3510
2728 /* adjust periodics after time jump */ 3511 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3524 reheap (periodics, periodiccnt);
2742} 3525}
2743#endif 3526#endif
2744 3527
2745/* adjust all timers by a given offset */ 3528/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3529noinline ecb_cold
3530static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3531timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3532{
2749 int i; 3533 int i;
2750 3534
2751 for (i = 0; i < timercnt; ++i) 3535 for (i = 0; i < timercnt; ++i)
… …
2825 3609
2826 mn_now = ev_rt_now; 3610 mn_now = ev_rt_now;
2827 } 3611 }
2828} 3612}
2829 3613
2830void 3614int
2831ev_run (EV_P_ int flags) 3615ev_run (EV_P_ int flags)
2832{ 3616{
2833#if EV_FEATURE_API 3617#if EV_FEATURE_API
2834 ++loop_depth; 3618 ++loop_depth;
2835#endif 3619#endif
… …
2948#endif 3732#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3733 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 3734 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3735 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 3736
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3737 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 3738
3739 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 3740 if (pipe_write_skipped)
2956 { 3741 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3742 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3743 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 3744 }
… …
2992 loop_done = EVBREAK_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2993 3778
2994#if EV_FEATURE_API 3779#if EV_FEATURE_API
2995 --loop_depth; 3780 --loop_depth;
2996#endif 3781#endif
2997}
2998 3782
3783 return activecnt;
3784}
3785
2999void 3786void
3000ev_break (EV_P_ int how) 3787ev_break (EV_P_ int how) EV_NOEXCEPT
3001{ 3788{
3002 loop_done = how; 3789 loop_done = how;
3003} 3790}
3004 3791
3005void 3792void
3006ev_ref (EV_P) 3793ev_ref (EV_P) EV_NOEXCEPT
3007{ 3794{
3008 ++activecnt; 3795 ++activecnt;
3009} 3796}
3010 3797
3011void 3798void
3012ev_unref (EV_P) 3799ev_unref (EV_P) EV_NOEXCEPT
3013{ 3800{
3014 --activecnt; 3801 --activecnt;
3015} 3802}
3016 3803
3017void 3804void
3018ev_now_update (EV_P) 3805ev_now_update (EV_P) EV_NOEXCEPT
3019{ 3806{
3020 time_update (EV_A_ 1e100); 3807 time_update (EV_A_ 1e100);
3021} 3808}
3022 3809
3023void 3810void
3024ev_suspend (EV_P) 3811ev_suspend (EV_P) EV_NOEXCEPT
3025{ 3812{
3026 ev_now_update (EV_A); 3813 ev_now_update (EV_A);
3027} 3814}
3028 3815
3029void 3816void
3030ev_resume (EV_P) 3817ev_resume (EV_P) EV_NOEXCEPT
3031{ 3818{
3032 ev_tstamp mn_prev = mn_now; 3819 ev_tstamp mn_prev = mn_now;
3033 3820
3034 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 3822 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3074 w->pending = 0; 3861 w->pending = 0;
3075 } 3862 }
3076} 3863}
3077 3864
3078int 3865int
3079ev_clear_pending (EV_P_ void *w) 3866ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3080{ 3867{
3081 W w_ = (W)w; 3868 W w_ = (W)w;
3082 int pending = w_->pending; 3869 int pending = w_->pending;
3083 3870
3084 if (expect_true (pending)) 3871 if (expect_true (pending))
… …
3116 w->active = 0; 3903 w->active = 0;
3117} 3904}
3118 3905
3119/*****************************************************************************/ 3906/*****************************************************************************/
3120 3907
3121void noinline 3908noinline
3909void
3122ev_io_start (EV_P_ ev_io *w) 3910ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3123{ 3911{
3124 int fd = w->fd; 3912 int fd = w->fd;
3125 3913
3126 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3127 return; 3915 return;
… …
3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3918 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3131 3919
3132 EV_FREQUENT_CHECK; 3920 EV_FREQUENT_CHECK;
3133 3921
3134 ev_start (EV_A_ (W)w, 1); 3922 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3923 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3136 wlist_add (&anfds[fd].head, (WL)w); 3924 wlist_add (&anfds[fd].head, (WL)w);
3925
3926 /* common bug, apparently */
3927 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3137 3928
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3929 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 3930 w->events &= ~EV__IOFDSET;
3140 3931
3141 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3142} 3933}
3143 3934
3144void noinline 3935noinline
3936void
3145ev_io_stop (EV_P_ ev_io *w) 3937ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 3938{
3147 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3149 return; 3941 return;
3150 3942
… …
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3950 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 3951
3160 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3161} 3953}
3162 3954
3163void noinline 3955noinline
3956void
3164ev_timer_start (EV_P_ ev_timer *w) 3957ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3165{ 3958{
3166 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3167 return; 3960 return;
3168 3961
3169 ev_at (w) += mn_now; 3962 ev_at (w) += mn_now;
… …
3172 3965
3173 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3174 3967
3175 ++timercnt; 3968 ++timercnt;
3176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3969 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3177 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3970 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3178 ANHE_w (timers [ev_active (w)]) = (WT)w; 3971 ANHE_w (timers [ev_active (w)]) = (WT)w;
3179 ANHE_at_cache (timers [ev_active (w)]); 3972 ANHE_at_cache (timers [ev_active (w)]);
3180 upheap (timers, ev_active (w)); 3973 upheap (timers, ev_active (w));
3181 3974
3182 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
3183 3976
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3977 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 3978}
3186 3979
3187void noinline 3980noinline
3981void
3188ev_timer_stop (EV_P_ ev_timer *w) 3982ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3189{ 3983{
3190 clear_pending (EV_A_ (W)w); 3984 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3985 if (expect_false (!ev_is_active (w)))
3192 return; 3986 return;
3193 3987
… …
3212 ev_stop (EV_A_ (W)w); 4006 ev_stop (EV_A_ (W)w);
3213 4007
3214 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
3215} 4009}
3216 4010
3217void noinline 4011noinline
4012void
3218ev_timer_again (EV_P_ ev_timer *w) 4013ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3219{ 4014{
3220 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
4016
4017 clear_pending (EV_A_ (W)w);
3221 4018
3222 if (ev_is_active (w)) 4019 if (ev_is_active (w))
3223 { 4020 {
3224 if (w->repeat) 4021 if (w->repeat)
3225 { 4022 {
… …
3238 4035
3239 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
3240} 4037}
3241 4038
3242ev_tstamp 4039ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 4040ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3244{ 4041{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4042 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3246} 4043}
3247 4044
3248#if EV_PERIODIC_ENABLE 4045#if EV_PERIODIC_ENABLE
3249void noinline 4046noinline
4047void
3250ev_periodic_start (EV_P_ ev_periodic *w) 4048ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3251{ 4049{
3252 if (expect_false (ev_is_active (w))) 4050 if (expect_false (ev_is_active (w)))
3253 return; 4051 return;
3254 4052
3255 if (w->reschedule_cb) 4053 if (w->reschedule_cb)
… …
3264 4062
3265 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3266 4064
3267 ++periodiccnt; 4065 ++periodiccnt;
3268 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4066 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3269 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4067 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3270 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4068 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3271 ANHE_at_cache (periodics [ev_active (w)]); 4069 ANHE_at_cache (periodics [ev_active (w)]);
3272 upheap (periodics, ev_active (w)); 4070 upheap (periodics, ev_active (w));
3273 4071
3274 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
3275 4073
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4074 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4075}
3278 4076
3279void noinline 4077noinline
4078void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4079ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3281{ 4080{
3282 clear_pending (EV_A_ (W)w); 4081 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4082 if (expect_false (!ev_is_active (w)))
3284 return; 4083 return;
3285 4084
… …
3302 ev_stop (EV_A_ (W)w); 4101 ev_stop (EV_A_ (W)w);
3303 4102
3304 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3305} 4104}
3306 4105
3307void noinline 4106noinline
4107void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4108ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3309{ 4109{
3310 /* TODO: use adjustheap and recalculation */ 4110 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4111 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4112 ev_periodic_start (EV_A_ w);
3313} 4113}
… …
3317# define SA_RESTART 0 4117# define SA_RESTART 0
3318#endif 4118#endif
3319 4119
3320#if EV_SIGNAL_ENABLE 4120#if EV_SIGNAL_ENABLE
3321 4121
3322void noinline 4122noinline
4123void
3323ev_signal_start (EV_P_ ev_signal *w) 4124ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3324{ 4125{
3325 if (expect_false (ev_is_active (w))) 4126 if (expect_false (ev_is_active (w)))
3326 return; 4127 return;
3327 4128
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4129 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3330#if EV_MULTIPLICITY 4131#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4132 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4133 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4134
3334 signals [w->signum - 1].loop = EV_A; 4135 signals [w->signum - 1].loop = EV_A;
4136 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4137#endif
3336 4138
3337 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3338 4140
3339#if EV_USE_SIGNALFD 4141#if EV_USE_SIGNALFD
… …
3398 } 4200 }
3399 4201
3400 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3401} 4203}
3402 4204
3403void noinline 4205noinline
4206void
3404ev_signal_stop (EV_P_ ev_signal *w) 4207ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3405{ 4208{
3406 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4210 if (expect_false (!ev_is_active (w)))
3408 return; 4211 return;
3409 4212
… …
3440#endif 4243#endif
3441 4244
3442#if EV_CHILD_ENABLE 4245#if EV_CHILD_ENABLE
3443 4246
3444void 4247void
3445ev_child_start (EV_P_ ev_child *w) 4248ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3446{ 4249{
3447#if EV_MULTIPLICITY 4250#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4251 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4252#endif
3450 if (expect_false (ev_is_active (w))) 4253 if (expect_false (ev_is_active (w)))
… …
3457 4260
3458 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3459} 4262}
3460 4263
3461void 4264void
3462ev_child_stop (EV_P_ ev_child *w) 4265ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3463{ 4266{
3464 clear_pending (EV_A_ (W)w); 4267 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4268 if (expect_false (!ev_is_active (w)))
3466 return; 4269 return;
3467 4270
… …
3484 4287
3485#define DEF_STAT_INTERVAL 5.0074891 4288#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4289#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4290#define MIN_STAT_INTERVAL 0.1074891
3488 4291
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4292noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4293
3491#if EV_USE_INOTIFY 4294#if EV_USE_INOTIFY
3492 4295
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4296/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4297# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4298
3496static void noinline 4299noinline
4300static void
3497infy_add (EV_P_ ev_stat *w) 4301infy_add (EV_P_ ev_stat *w)
3498{ 4302{
3499 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4303 w->wd = inotify_add_watch (fs_fd, w->path,
4304 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4305 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4306 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4307
3501 if (w->wd >= 0) 4308 if (w->wd >= 0)
3502 { 4309 {
3503 struct statfs sfs; 4310 struct statfs sfs;
3504 4311
… …
3508 4315
3509 if (!fs_2625) 4316 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4317 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4318 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4319 && (sfs.f_type == 0x1373 /* devfs */
4320 || sfs.f_type == 0x4006 /* fat */
4321 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4322 || sfs.f_type == 0xEF53 /* ext2/3 */
4323 || sfs.f_type == 0x72b6 /* jffs2 */
4324 || sfs.f_type == 0x858458f6 /* ramfs */
4325 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4326 || sfs.f_type == 0x3153464a /* jfs */
4327 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4328 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4329 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4330 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4331 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4332 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4333 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4334 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4369 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4370 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4371 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4372}
3560 4373
3561static void noinline 4374noinline
4375static void
3562infy_del (EV_P_ ev_stat *w) 4376infy_del (EV_P_ ev_stat *w)
3563{ 4377{
3564 int slot; 4378 int slot;
3565 int wd = w->wd; 4379 int wd = w->wd;
3566 4380
… …
3573 4387
3574 /* remove this watcher, if others are watching it, they will rearm */ 4388 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4389 inotify_rm_watch (fs_fd, wd);
3576} 4390}
3577 4391
3578static void noinline 4392noinline
4393static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4394infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4395{
3581 if (slot < 0) 4396 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4397 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4398 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4434 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4435 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4436 }
3622} 4437}
3623 4438
3624inline_size void ecb_cold 4439inline_size ecb_cold
4440void
3625ev_check_2625 (EV_P) 4441ev_check_2625 (EV_P)
3626{ 4442{
3627 /* kernels < 2.6.25 are borked 4443 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4444 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4445 */
… …
3634} 4450}
3635 4451
3636inline_size int 4452inline_size int
3637infy_newfd (void) 4453infy_newfd (void)
3638{ 4454{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4455#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4456 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4457 if (fd >= 0)
3642 return fd; 4458 return fd;
3643#endif 4459#endif
3644 return inotify_init (); 4460 return inotify_init ();
… …
3719#else 4535#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4536# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4537#endif
3722 4538
3723void 4539void
3724ev_stat_stat (EV_P_ ev_stat *w) 4540ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3725{ 4541{
3726 if (lstat (w->path, &w->attr) < 0) 4542 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4543 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4544 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4545 w->attr.st_nlink = 1;
3730} 4546}
3731 4547
3732static void noinline 4548noinline
4549static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4550stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4551{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4552 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4553
3737 ev_statdata prev = w->attr; 4554 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4585 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4586 }
3770} 4587}
3771 4588
3772void 4589void
3773ev_stat_start (EV_P_ ev_stat *w) 4590ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3774{ 4591{
3775 if (expect_false (ev_is_active (w))) 4592 if (expect_false (ev_is_active (w)))
3776 return; 4593 return;
3777 4594
3778 ev_stat_stat (EV_A_ w); 4595 ev_stat_stat (EV_A_ w);
… …
3799 4616
3800 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3801} 4618}
3802 4619
3803void 4620void
3804ev_stat_stop (EV_P_ ev_stat *w) 4621ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3805{ 4622{
3806 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
3808 return; 4625 return;
3809 4626
… …
3825} 4642}
3826#endif 4643#endif
3827 4644
3828#if EV_IDLE_ENABLE 4645#if EV_IDLE_ENABLE
3829void 4646void
3830ev_idle_start (EV_P_ ev_idle *w) 4647ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3831{ 4648{
3832 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3833 return; 4650 return;
3834 4651
3835 pri_adjust (EV_A_ (W)w); 4652 pri_adjust (EV_A_ (W)w);
… …
3840 int active = ++idlecnt [ABSPRI (w)]; 4657 int active = ++idlecnt [ABSPRI (w)];
3841 4658
3842 ++idleall; 4659 ++idleall;
3843 ev_start (EV_A_ (W)w, active); 4660 ev_start (EV_A_ (W)w, active);
3844 4661
3845 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4662 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3846 idles [ABSPRI (w)][active - 1] = w; 4663 idles [ABSPRI (w)][active - 1] = w;
3847 } 4664 }
3848 4665
3849 EV_FREQUENT_CHECK; 4666 EV_FREQUENT_CHECK;
3850} 4667}
3851 4668
3852void 4669void
3853ev_idle_stop (EV_P_ ev_idle *w) 4670ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4671{
3855 clear_pending (EV_A_ (W)w); 4672 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4673 if (expect_false (!ev_is_active (w)))
3857 return; 4674 return;
3858 4675
… …
3872} 4689}
3873#endif 4690#endif
3874 4691
3875#if EV_PREPARE_ENABLE 4692#if EV_PREPARE_ENABLE
3876void 4693void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4694ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3878{ 4695{
3879 if (expect_false (ev_is_active (w))) 4696 if (expect_false (ev_is_active (w)))
3880 return; 4697 return;
3881 4698
3882 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3883 4700
3884 ev_start (EV_A_ (W)w, ++preparecnt); 4701 ev_start (EV_A_ (W)w, ++preparecnt);
3885 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4702 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3886 prepares [preparecnt - 1] = w; 4703 prepares [preparecnt - 1] = w;
3887 4704
3888 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
3889} 4706}
3890 4707
3891void 4708void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 4709ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3893{ 4710{
3894 clear_pending (EV_A_ (W)w); 4711 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4712 if (expect_false (!ev_is_active (w)))
3896 return; 4713 return;
3897 4714
… …
3910} 4727}
3911#endif 4728#endif
3912 4729
3913#if EV_CHECK_ENABLE 4730#if EV_CHECK_ENABLE
3914void 4731void
3915ev_check_start (EV_P_ ev_check *w) 4732ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3916{ 4733{
3917 if (expect_false (ev_is_active (w))) 4734 if (expect_false (ev_is_active (w)))
3918 return; 4735 return;
3919 4736
3920 EV_FREQUENT_CHECK; 4737 EV_FREQUENT_CHECK;
3921 4738
3922 ev_start (EV_A_ (W)w, ++checkcnt); 4739 ev_start (EV_A_ (W)w, ++checkcnt);
3923 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4740 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3924 checks [checkcnt - 1] = w; 4741 checks [checkcnt - 1] = w;
3925 4742
3926 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
3927} 4744}
3928 4745
3929void 4746void
3930ev_check_stop (EV_P_ ev_check *w) 4747ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3931{ 4748{
3932 clear_pending (EV_A_ (W)w); 4749 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 4750 if (expect_false (!ev_is_active (w)))
3934 return; 4751 return;
3935 4752
… …
3947 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3948} 4765}
3949#endif 4766#endif
3950 4767
3951#if EV_EMBED_ENABLE 4768#if EV_EMBED_ENABLE
3952void noinline 4769noinline
4770void
3953ev_embed_sweep (EV_P_ ev_embed *w) 4771ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3954{ 4772{
3955 ev_run (w->other, EVRUN_NOWAIT); 4773 ev_run (w->other, EVRUN_NOWAIT);
3956} 4774}
3957 4775
3958static void 4776static void
… …
4006 ev_idle_stop (EV_A_ idle); 4824 ev_idle_stop (EV_A_ idle);
4007} 4825}
4008#endif 4826#endif
4009 4827
4010void 4828void
4011ev_embed_start (EV_P_ ev_embed *w) 4829ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4012{ 4830{
4013 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4014 return; 4832 return;
4015 4833
4016 { 4834 {
… …
4037 4855
4038 EV_FREQUENT_CHECK; 4856 EV_FREQUENT_CHECK;
4039} 4857}
4040 4858
4041void 4859void
4042ev_embed_stop (EV_P_ ev_embed *w) 4860ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4043{ 4861{
4044 clear_pending (EV_A_ (W)w); 4862 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4863 if (expect_false (!ev_is_active (w)))
4046 return; 4864 return;
4047 4865
… …
4057} 4875}
4058#endif 4876#endif
4059 4877
4060#if EV_FORK_ENABLE 4878#if EV_FORK_ENABLE
4061void 4879void
4062ev_fork_start (EV_P_ ev_fork *w) 4880ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4063{ 4881{
4064 if (expect_false (ev_is_active (w))) 4882 if (expect_false (ev_is_active (w)))
4065 return; 4883 return;
4066 4884
4067 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
4068 4886
4069 ev_start (EV_A_ (W)w, ++forkcnt); 4887 ev_start (EV_A_ (W)w, ++forkcnt);
4070 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4888 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4071 forks [forkcnt - 1] = w; 4889 forks [forkcnt - 1] = w;
4072 4890
4073 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4074} 4892}
4075 4893
4076void 4894void
4077ev_fork_stop (EV_P_ ev_fork *w) 4895ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4078{ 4896{
4079 clear_pending (EV_A_ (W)w); 4897 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 4898 if (expect_false (!ev_is_active (w)))
4081 return; 4899 return;
4082 4900
… …
4095} 4913}
4096#endif 4914#endif
4097 4915
4098#if EV_CLEANUP_ENABLE 4916#if EV_CLEANUP_ENABLE
4099void 4917void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 4918ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4101{ 4919{
4102 if (expect_false (ev_is_active (w))) 4920 if (expect_false (ev_is_active (w)))
4103 return; 4921 return;
4104 4922
4105 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4106 4924
4107 ev_start (EV_A_ (W)w, ++cleanupcnt); 4925 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4926 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4109 cleanups [cleanupcnt - 1] = w; 4927 cleanups [cleanupcnt - 1] = w;
4110 4928
4111 /* cleanup watchers should never keep a refcount on the loop */ 4929 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A); 4930 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
4114} 4932}
4115 4933
4116void 4934void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 4935ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4118{ 4936{
4119 clear_pending (EV_A_ (W)w); 4937 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4938 if (expect_false (!ev_is_active (w)))
4121 return; 4939 return;
4122 4940
… …
4136} 4954}
4137#endif 4955#endif
4138 4956
4139#if EV_ASYNC_ENABLE 4957#if EV_ASYNC_ENABLE
4140void 4958void
4141ev_async_start (EV_P_ ev_async *w) 4959ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4142{ 4960{
4143 if (expect_false (ev_is_active (w))) 4961 if (expect_false (ev_is_active (w)))
4144 return; 4962 return;
4145 4963
4146 w->sent = 0; 4964 w->sent = 0;
… …
4148 evpipe_init (EV_A); 4966 evpipe_init (EV_A);
4149 4967
4150 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4151 4969
4152 ev_start (EV_A_ (W)w, ++asynccnt); 4970 ev_start (EV_A_ (W)w, ++asynccnt);
4153 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4971 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4154 asyncs [asynccnt - 1] = w; 4972 asyncs [asynccnt - 1] = w;
4155 4973
4156 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4157} 4975}
4158 4976
4159void 4977void
4160ev_async_stop (EV_P_ ev_async *w) 4978ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4161{ 4979{
4162 clear_pending (EV_A_ (W)w); 4980 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4981 if (expect_false (!ev_is_active (w)))
4164 return; 4982 return;
4165 4983
… …
4176 4994
4177 EV_FREQUENT_CHECK; 4995 EV_FREQUENT_CHECK;
4178} 4996}
4179 4997
4180void 4998void
4181ev_async_send (EV_P_ ev_async *w) 4999ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4182{ 5000{
4183 w->sent = 1; 5001 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 5002 evpipe_write (EV_A_ &async_pending);
4185} 5003}
4186#endif 5004#endif
… …
4223 5041
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5042 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 5043}
4226 5044
4227void 5045void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5046ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4229{ 5047{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231
4232 if (expect_false (!once))
4233 {
4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4235 return;
4236 }
4237 5049
4238 once->cb = cb; 5050 once->cb = cb;
4239 once->arg = arg; 5051 once->arg = arg;
4240 5052
4241 ev_init (&once->io, once_cb_io); 5053 ev_init (&once->io, once_cb_io);
… …
4254} 5066}
4255 5067
4256/*****************************************************************************/ 5068/*****************************************************************************/
4257 5069
4258#if EV_WALK_ENABLE 5070#if EV_WALK_ENABLE
4259void ecb_cold 5071ecb_cold
5072void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5073ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4261{ 5074{
4262 int i, j; 5075 int i, j;
4263 ev_watcher_list *wl, *wn; 5076 ev_watcher_list *wl, *wn;
4264 5077
4265 if (types & (EV_IO | EV_EMBED)) 5078 if (types & (EV_IO | EV_EMBED))
… …
4371 5184
4372#if EV_MULTIPLICITY 5185#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5186 #include "ev_wrap.h"
4374#endif 5187#endif
4375 5188
4376EV_CPP(})
4377

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