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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 1.494 by root, Sun Jun 23 23:28:45 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
302#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 340# else
306# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
347 382
348#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 385#endif
351 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 406# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
360# else 411# else
… …
363# endif 414# endif
364#endif 415#endif
365 416
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 418
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
377#endif 422#endif
378 423
… …
386# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
387#endif 432#endif
388 433
389#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL
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
… …
902# include "ev_win32.c" 1603# include "ev_win32.c"
903#endif 1604#endif
904 1605
905/*****************************************************************************/ 1606/*****************************************************************************/
906 1607
1608#if EV_USE_LINUXAIO
1609# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1610#endif
1611
907/* define a suitable floor function (only used by periodics atm) */ 1612/* define a suitable floor function (only used by periodics atm) */
908 1613
909#if EV_USE_FLOOR 1614#if EV_USE_FLOOR
910# include <math.h> 1615# include <math.h>
911# define ev_floor(v) floor (v) 1616# define ev_floor(v) floor (v)
912#else 1617#else
913 1618
914#include <float.h> 1619#include <float.h>
915 1620
916/* a floor() replacement function, should be independent of ev_tstamp type */ 1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
917static ev_tstamp noinline 1623static ev_tstamp
918ev_floor (ev_tstamp v) 1624ev_floor (ev_tstamp v)
919{ 1625{
920 /* the choice of shift factor is not terribly important */ 1626 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
954 1660
955#ifdef __linux 1661#ifdef __linux
956# include <sys/utsname.h> 1662# include <sys/utsname.h>
957#endif 1663#endif
958 1664
959static unsigned int noinline ecb_cold 1665noinline ecb_cold
1666static unsigned int
960ev_linux_version (void) 1667ev_linux_version (void)
961{ 1668{
962#ifdef __linux 1669#ifdef __linux
963 unsigned int v = 0; 1670 unsigned int v = 0;
964 struct utsname buf; 1671 struct utsname buf;
… …
993} 1700}
994 1701
995/*****************************************************************************/ 1702/*****************************************************************************/
996 1703
997#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
998static void noinline ecb_cold 1705noinline ecb_cold
1706static void
999ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
1000{ 1708{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
1002} 1710}
1003#endif 1711#endif
1004 1712
1005static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1006 1714
1007void ecb_cold 1715ecb_cold
1716void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1009{ 1718{
1010 syserr_cb = cb; 1719 syserr_cb = cb;
1011} 1720}
1012 1721
1013static void noinline ecb_cold 1722noinline ecb_cold
1723static void
1014ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
1015{ 1725{
1016 if (!msg) 1726 if (!msg)
1017 msg = "(libev) system error"; 1727 msg = "(libev) system error";
1018 1728
… …
1031 abort (); 1741 abort ();
1032 } 1742 }
1033} 1743}
1034 1744
1035static void * 1745static void *
1036ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1037{ 1747{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
1042 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
1043 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
1044 */ 1753 */
1045 1754
1046 if (size) 1755 if (size)
1047 return realloc (ptr, size); 1756 return realloc (ptr, size);
1048 1757
1049 free (ptr); 1758 free (ptr);
1050 return 0; 1759 return 0;
1051#endif
1052} 1760}
1053 1761
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1055 1763
1056void ecb_cold 1764ecb_cold
1765void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1058{ 1767{
1059 alloc = cb; 1768 alloc = cb;
1060} 1769}
1061 1770
1062inline_speed void * 1771inline_speed void *
… …
1089typedef struct 1798typedef struct
1090{ 1799{
1091 WL head; 1800 WL head;
1092 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
1093 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
1095 unsigned char unused; 1804 unsigned char unused;
1096#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
1097 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
1098#endif 1807#endif
1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1150 #undef VAR 1859 #undef VAR
1151 }; 1860 };
1152 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
1153 1862
1154 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 1865
1157#else 1866#else
1158 1867
1159 ev_tstamp ev_rt_now; 1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 1870 #include "ev_vars.h"
1162 #undef VAR 1871 #undef VAR
1163 1872
1164 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
… …
1179 1888
1180/*****************************************************************************/ 1889/*****************************************************************************/
1181 1890
1182#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 1892ev_tstamp
1184ev_time (void) 1893ev_time (void) EV_NOEXCEPT
1185{ 1894{
1186#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
1188 { 1897 {
1189 struct timespec ts; 1898 struct timespec ts;
… …
1213 return ev_time (); 1922 return ev_time ();
1214} 1923}
1215 1924
1216#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
1217ev_tstamp 1926ev_tstamp
1218ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
1219{ 1928{
1220 return ev_rt_now; 1929 return ev_rt_now;
1221} 1930}
1222#endif 1931#endif
1223 1932
1224void 1933void
1225ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1226{ 1935{
1227 if (delay > 0.) 1936 if (delay > 0.)
1228 { 1937 {
1229#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
1230 struct timespec ts; 1939 struct timespec ts;
1231 1940
1232 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
1235 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
1236#else 1947#else
1237 struct timeval tv; 1948 struct timeval tv;
1238 1949
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1258 1969
1259 do 1970 do
1260 ncur <<= 1; 1971 ncur <<= 1;
1261 while (cnt > ncur); 1972 while (cnt > ncur);
1262 1973
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 1976 {
1266 ncur *= elem; 1977 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 1981 }
1271 1982
1272 return ncur; 1983 return ncur;
1273} 1984}
1274 1985
1275static void * noinline ecb_cold 1986noinline ecb_cold
1987static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 1989{
1278 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
1280} 1992}
1281 1993
1994#define array_needsize_noinit(base,count)
1995
1282#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1284 1998
1285#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
1287 { \ 2001 { \
1288 int ecb_unused ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
1292 } 2006 }
1293 2007
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 2020
1307/*****************************************************************************/ 2021/*****************************************************************************/
1308 2022
1309/* dummy callback for pending events */ 2023/* dummy callback for pending events */
1310static void noinline 2024noinline
2025static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 2027{
1313} 2028}
1314 2029
1315void noinline 2030noinline
2031void
1316ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1317{ 2033{
1318 W w_ = (W)w; 2034 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
1320 2036
1321 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
1322 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
1323 else 2039 else
1324 { 2040 {
1325 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1327 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
1329 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
1330} 2048}
1331 2049
1332inline_speed void 2050inline_speed void
1333feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
1334{ 2052{
1335 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1336 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
1337} 2055}
1338 2056
1339inline_size void 2057inline_size void
1340feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
1380 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
1382} 2100}
1383 2101
1384void 2102void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1386{ 2104{
1387 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
1389} 2107}
1390 2108
… …
1448 2166
1449 fdchangecnt = 0; 2167 fdchangecnt = 0;
1450} 2168}
1451 2169
1452/* something about the given fd changed */ 2170/* something about the given fd changed */
1453inline_size void 2171inline_size
2172void
1454fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1455{ 2174{
1456 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1458 2177
1459 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1460 { 2179 {
1461 ++fdchangecnt; 2180 ++fdchangecnt;
1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1463 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1464 } 2183 }
1465} 2184}
1466 2185
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1468inline_speed void ecb_cold 2187inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1470{ 2189{
1471 ev_io *w; 2190 ev_io *w;
1472 2191
1473 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1477 } 2196 }
1478} 2197}
1479 2198
1480/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2200inline_size ecb_cold int
1482fd_valid (int fd) 2201fd_valid (int fd)
1483{ 2202{
1484#ifdef _WIN32 2203#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2205#else
1487 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1488#endif 2207#endif
1489} 2208}
1490 2209
1491/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2211noinline ecb_cold
2212static void
1493fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1494{ 2214{
1495 int fd; 2215 int fd;
1496 2216
1497 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1501} 2221}
1502 2222
1503/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1504static void noinline ecb_cold 2224noinline ecb_cold
2225static void
1505fd_enomem (EV_P) 2226fd_enomem (EV_P)
1506{ 2227{
1507 int fd; 2228 int fd;
1508 2229
1509 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1513 break; 2234 break;
1514 } 2235 }
1515} 2236}
1516 2237
1517/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1518static void noinline 2239noinline
2240static void
1519fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1520{ 2242{
1521 int fd; 2243 int fd;
1522 2244
1523 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1704 2426
1705/*****************************************************************************/ 2427/*****************************************************************************/
1706 2428
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2430
1709static void noinline ecb_cold 2431noinline ecb_cold
2432static void
1710evpipe_init (EV_P) 2433evpipe_init (EV_P)
1711{ 2434{
1712 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1713 { 2436 {
2437 int fds [2];
2438
1714# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1718 2444
1719 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1720 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1721 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
2477inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481
2482 if (expect_true (*flag))
2483 return;
2484
2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
2501#if EV_USE_EVENTFD
2502 if (evpipe [0] < 0)
2503 {
2504 uint64_t counter = 1;
2505 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2506 }
1725 else 2507 else
1726# endif 2508#endif
1727 { 2509 {
1728 while (pipe (evpipe)) 2510#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1730 2512 DWORD sent;
1731 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1732 fd_intern (evpipe [1]); 2514 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2516#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); 2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1778 } 2519 }
1779 2520
1780 errno = old_errno; 2521 errno = old_errno;
1781 } 2522 }
1782} 2523}
… …
1789 int i; 2530 int i;
1790 2531
1791 if (revents & EV_READ) 2532 if (revents & EV_READ)
1792 { 2533 {
1793#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1795 { 2536 {
1796 uint64_t counter; 2537 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2539 }
1799 else 2540 else
1800#endif 2541#endif
1801 { 2542 {
1802 char dummy; 2543 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1804 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
1805 } 2554 }
1806 } 2555 }
1807 2556
1808 pipe_write_skipped = 0; 2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2560
1810#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2562 if (sig_pending)
1812 { 2563 {
1813 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1814 2567
1815 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2571 }
… …
1820 2573
1821#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1822 if (async_pending) 2575 if (async_pending)
1823 { 2576 {
1824 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1825 2580
1826 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1828 { 2583 {
1829 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2587 }
1832 } 2588 }
1833#endif 2589#endif
1834} 2590}
1835 2591
1836/*****************************************************************************/ 2592/*****************************************************************************/
1837 2593
1838void 2594void
1839ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1840{ 2596{
1841#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1843 2601
1844 if (!EV_A) 2602 if (!EV_A)
1845 return; 2603 return;
1846#endif 2604#endif
1847 2605
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2606 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2607 evpipe_write (EV_A_ &sig_pending);
1853} 2608}
1854 2609
1855static void 2610static void
… …
1860#endif 2615#endif
1861 2616
1862 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1863} 2618}
1864 2619
1865void noinline 2620noinline
2621void
1866ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1867{ 2623{
1868 WL w; 2624 WL w;
1869 2625
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2627 return;
1872 2628
1873 --signum; 2629 --signum;
1874 2630
1875#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1879 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1880 return; 2636 return;
1881#endif 2637#endif
1882 2638
1883 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1884 2641
1885 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2644}
1888 2645
… …
1979# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1980#endif 2737#endif
1981#if EV_USE_EPOLL 2738#if EV_USE_EPOLL
1982# include "ev_epoll.c" 2739# include "ev_epoll.c"
1983#endif 2740#endif
2741#if EV_USE_LINUXAIO
2742# include "ev_linuxaio.c"
2743#endif
1984#if EV_USE_POLL 2744#if EV_USE_POLL
1985# include "ev_poll.c" 2745# include "ev_poll.c"
1986#endif 2746#endif
1987#if EV_USE_SELECT 2747#if EV_USE_SELECT
1988# include "ev_select.c" 2748# include "ev_select.c"
1989#endif 2749#endif
1990 2750
1991int ecb_cold 2751ecb_cold int
1992ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1993{ 2753{
1994 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1995} 2755}
1996 2756
1997int ecb_cold 2757ecb_cold int
1998ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1999{ 2759{
2000 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
2001} 2761}
2002 2762
2003/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
2004int inline_size ecb_cold 2764inline_size ecb_cold int
2005enable_secure (void) 2765enable_secure (void)
2006{ 2766{
2007#ifdef _WIN32 2767#ifdef _WIN32
2008 return 0; 2768 return 0;
2009#else 2769#else
2010 return getuid () != geteuid () 2770 return getuid () != geteuid ()
2011 || getgid () != getegid (); 2771 || getgid () != getegid ();
2012#endif 2772#endif
2013} 2773}
2014 2774
2015unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2016ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
2017{ 2778{
2018 unsigned int flags = 0; 2779 unsigned int flags = 0;
2019 2780
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2022 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2023 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2025 2787
2026 return flags; 2788 return flags;
2027} 2789}
2028 2790
2029unsigned int ecb_cold 2791ecb_cold
2792unsigned int
2030ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
2031{ 2794{
2032 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
2033 2796
2034#ifndef __NetBSD__ 2797#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
2043#endif 2806#endif
2044#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
2045 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2046#endif 2809#endif
2047 2810
2811 /* TODO: linuxaio is very experimental */
2812#if !EV_RECOMMEND_LINUXAIO
2813 flags &= ~EVBACKEND_LINUXAIO;
2814#endif
2815
2048 return flags; 2816 return flags;
2049} 2817}
2050 2818
2051unsigned int ecb_cold 2819ecb_cold
2820unsigned int
2052ev_embeddable_backends (void) 2821ev_embeddable_backends (void) EV_NOEXCEPT
2053{ 2822{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2823 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 2824
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2825 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2826 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2059 2828
2060 return flags; 2829 return flags;
2061} 2830}
2062 2831
2063unsigned int 2832unsigned int
2064ev_backend (EV_P) 2833ev_backend (EV_P) EV_NOEXCEPT
2065{ 2834{
2066 return backend; 2835 return backend;
2067} 2836}
2068 2837
2069#if EV_FEATURE_API 2838#if EV_FEATURE_API
2070unsigned int 2839unsigned int
2071ev_iteration (EV_P) 2840ev_iteration (EV_P) EV_NOEXCEPT
2072{ 2841{
2073 return loop_count; 2842 return loop_count;
2074} 2843}
2075 2844
2076unsigned int 2845unsigned int
2077ev_depth (EV_P) 2846ev_depth (EV_P) EV_NOEXCEPT
2078{ 2847{
2079 return loop_depth; 2848 return loop_depth;
2080} 2849}
2081 2850
2082void 2851void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2084{ 2853{
2085 io_blocktime = interval; 2854 io_blocktime = interval;
2086} 2855}
2087 2856
2088void 2857void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2858ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2090{ 2859{
2091 timeout_blocktime = interval; 2860 timeout_blocktime = interval;
2092} 2861}
2093 2862
2094void 2863void
2095ev_set_userdata (EV_P_ void *data) 2864ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2096{ 2865{
2097 userdata = data; 2866 userdata = data;
2098} 2867}
2099 2868
2100void * 2869void *
2101ev_userdata (EV_P) 2870ev_userdata (EV_P) EV_NOEXCEPT
2102{ 2871{
2103 return userdata; 2872 return userdata;
2104} 2873}
2105 2874
2106void 2875void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2876ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2108{ 2877{
2109 invoke_cb = invoke_pending_cb; 2878 invoke_cb = invoke_pending_cb;
2110} 2879}
2111 2880
2112void 2881void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2882ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2114{ 2883{
2115 release_cb = release; 2884 release_cb = release;
2116 acquire_cb = acquire; 2885 acquire_cb = acquire;
2117} 2886}
2118#endif 2887#endif
2119 2888
2120/* initialise a loop structure, must be zero-initialised */ 2889/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 2890noinline ecb_cold
2891static void
2122loop_init (EV_P_ unsigned int flags) 2892loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2123{ 2893{
2124 if (!backend) 2894 if (!backend)
2125 { 2895 {
2126 origflags = flags; 2896 origflags = flags;
2127 2897
… …
2172#if EV_ASYNC_ENABLE 2942#if EV_ASYNC_ENABLE
2173 async_pending = 0; 2943 async_pending = 0;
2174#endif 2944#endif
2175 pipe_write_skipped = 0; 2945 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 2946 pipe_write_wanted = 0;
2947 evpipe [0] = -1;
2948 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 2949#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2950 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 2951#endif
2180#if EV_USE_SIGNALFD 2952#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2953 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2183 2955
2184 if (!(flags & EVBACKEND_MASK)) 2956 if (!(flags & EVBACKEND_MASK))
2185 flags |= ev_recommended_backends (); 2957 flags |= ev_recommended_backends ();
2186 2958
2187#if EV_USE_IOCP 2959#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif 2961#endif
2190#if EV_USE_PORT 2962#if EV_USE_PORT
2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2963 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2192#endif 2964#endif
2193#if EV_USE_KQUEUE 2965#if EV_USE_KQUEUE
2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2967#endif
2968#if EV_USE_LINUXAIO
2969 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2195#endif 2970#endif
2196#if EV_USE_EPOLL 2971#if EV_USE_EPOLL
2197 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2198#endif 2973#endif
2199#if EV_USE_POLL 2974#if EV_USE_POLL
2200 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2975 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2201#endif 2976#endif
2202#if EV_USE_SELECT 2977#if EV_USE_SELECT
2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2978 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2204#endif 2979#endif
2205 2980
2206 ev_prepare_init (&pending_w, pendingcb); 2981 ev_prepare_init (&pending_w, pendingcb);
2207 2982
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2983#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2211#endif 2986#endif
2212 } 2987 }
2213} 2988}
2214 2989
2215/* free up a loop structure */ 2990/* free up a loop structure */
2216void ecb_cold 2991ecb_cold
2992void
2217ev_loop_destroy (EV_P) 2993ev_loop_destroy (EV_P)
2218{ 2994{
2219 int i; 2995 int i;
2220 2996
2221#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
… …
2232 EV_INVOKE_PENDING; 3008 EV_INVOKE_PENDING;
2233 } 3009 }
2234#endif 3010#endif
2235 3011
2236#if EV_CHILD_ENABLE 3012#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 3013 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 3014 {
2239 ev_ref (EV_A); /* child watcher */ 3015 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 3016 ev_signal_stop (EV_A_ &childev);
2241 } 3017 }
2242#endif 3018#endif
… …
2244 if (ev_is_active (&pipe_w)) 3020 if (ev_is_active (&pipe_w))
2245 { 3021 {
2246 /*ev_ref (EV_A);*/ 3022 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 3023 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 3024
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]); 3025 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 3026 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 3027 }
2260 3028
2261#if EV_USE_SIGNALFD 3029#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 3030 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 3031 close (sigfd);
… …
2270 3038
2271 if (backend_fd >= 0) 3039 if (backend_fd >= 0)
2272 close (backend_fd); 3040 close (backend_fd);
2273 3041
2274#if EV_USE_IOCP 3042#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3043 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif 3044#endif
2277#if EV_USE_PORT 3045#if EV_USE_PORT
2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3046 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2279#endif 3047#endif
2280#if EV_USE_KQUEUE 3048#if EV_USE_KQUEUE
2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3049 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3050#endif
3051#if EV_USE_LINUXAIO
3052 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2282#endif 3053#endif
2283#if EV_USE_EPOLL 3054#if EV_USE_EPOLL
2284 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3055 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2285#endif 3056#endif
2286#if EV_USE_POLL 3057#if EV_USE_POLL
2287 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3058 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2288#endif 3059#endif
2289#if EV_USE_SELECT 3060#if EV_USE_SELECT
2290 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3061 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2291#endif 3062#endif
2292 3063
2293 for (i = NUMPRI; i--; ) 3064 for (i = NUMPRI; i--; )
2294 { 3065 {
2295 array_free (pending, [i]); 3066 array_free (pending, [i]);
… …
2337 3108
2338inline_size void 3109inline_size void
2339loop_fork (EV_P) 3110loop_fork (EV_P)
2340{ 3111{
2341#if EV_USE_PORT 3112#if EV_USE_PORT
2342 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3113 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2343#endif 3114#endif
2344#if EV_USE_KQUEUE 3115#if EV_USE_KQUEUE
2345 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3116 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3117#endif
3118#if EV_USE_LINUXAIO
3119 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2346#endif 3120#endif
2347#if EV_USE_EPOLL 3121#if EV_USE_EPOLL
2348 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3122 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2349#endif 3123#endif
2350#if EV_USE_INOTIFY 3124#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3125 infy_fork (EV_A);
2352#endif 3126#endif
2353 3127
3128#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3129 if (ev_is_active (&pipe_w) && postfork != 2)
2355 { 3130 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3131 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3132
2358 ev_ref (EV_A); 3133 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3134 ev_io_stop (EV_A_ &pipe_w);
2360 3135
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3136 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3137 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]);
2370 }
2371 3138
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A); 3139 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */ 3140 /* iterate over everything, in case we missed something before */
2375 pipecb (EV_A_ &pipe_w, EV_READ); 3141 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2376#endif
2377 } 3142 }
3143#endif
2378 3144
2379 postfork = 0; 3145 postfork = 0;
2380} 3146}
2381 3147
2382#if EV_MULTIPLICITY 3148#if EV_MULTIPLICITY
2383 3149
3150ecb_cold
2384struct ev_loop * ecb_cold 3151struct ev_loop *
2385ev_loop_new (unsigned int flags) 3152ev_loop_new (unsigned int flags) EV_NOEXCEPT
2386{ 3153{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3154 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3155
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3156 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3157 loop_init (EV_A_ flags);
… …
2397} 3164}
2398 3165
2399#endif /* multiplicity */ 3166#endif /* multiplicity */
2400 3167
2401#if EV_VERIFY 3168#if EV_VERIFY
2402static void noinline ecb_cold 3169noinline ecb_cold
3170static void
2403verify_watcher (EV_P_ W w) 3171verify_watcher (EV_P_ W w)
2404{ 3172{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3173 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3174
2407 if (w->pending) 3175 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3176 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3177}
2410 3178
2411static void noinline ecb_cold 3179noinline ecb_cold
3180static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3181verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3182{
2414 int i; 3183 int i;
2415 3184
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3185 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3190
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3191 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3192 }
2424} 3193}
2425 3194
2426static void noinline ecb_cold 3195noinline ecb_cold
3196static void
2427array_verify (EV_P_ W *ws, int cnt) 3197array_verify (EV_P_ W *ws, int cnt)
2428{ 3198{
2429 while (cnt--) 3199 while (cnt--)
2430 { 3200 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3201 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3204}
2435#endif 3205#endif
2436 3206
2437#if EV_FEATURE_API 3207#if EV_FEATURE_API
2438void ecb_cold 3208void ecb_cold
2439ev_verify (EV_P) 3209ev_verify (EV_P) EV_NOEXCEPT
2440{ 3210{
2441#if EV_VERIFY 3211#if EV_VERIFY
2442 int i; 3212 int i;
2443 WL w; 3213 WL w, w2;
2444 3214
2445 assert (activecnt >= -1); 3215 assert (activecnt >= -1);
2446 3216
2447 assert (fdchangemax >= fdchangecnt); 3217 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3218 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3219 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3220
2451 assert (anfdmax >= 0); 3221 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3222 for (i = 0; i < anfdmax; ++i)
3223 {
3224 int j = 0;
3225
2453 for (w = anfds [i].head; w; w = w->next) 3226 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3227 {
2455 verify_watcher (EV_A_ (W)w); 3228 verify_watcher (EV_A_ (W)w);
3229
3230 if (j++ & 1)
3231 {
3232 assert (("libev: io watcher list contains a loop", w != w2));
3233 w2 = w2->next;
3234 }
3235
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3236 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3237 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3238 }
3239 }
2459 3240
2460 assert (timermax >= timercnt); 3241 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3242 verify_heap (EV_A_ timers, timercnt);
2462 3243
2463#if EV_PERIODIC_ENABLE 3244#if EV_PERIODIC_ENABLE
… …
2509#endif 3290#endif
2510} 3291}
2511#endif 3292#endif
2512 3293
2513#if EV_MULTIPLICITY 3294#if EV_MULTIPLICITY
3295ecb_cold
2514struct ev_loop * ecb_cold 3296struct ev_loop *
2515#else 3297#else
2516int 3298int
2517#endif 3299#endif
2518ev_default_loop (unsigned int flags) 3300ev_default_loop (unsigned int flags) EV_NOEXCEPT
2519{ 3301{
2520 if (!ev_default_loop_ptr) 3302 if (!ev_default_loop_ptr)
2521 { 3303 {
2522#if EV_MULTIPLICITY 3304#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3305 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3324
2543 return ev_default_loop_ptr; 3325 return ev_default_loop_ptr;
2544} 3326}
2545 3327
2546void 3328void
2547ev_loop_fork (EV_P) 3329ev_loop_fork (EV_P) EV_NOEXCEPT
2548{ 3330{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3331 postfork = 1;
2550} 3332}
2551 3333
2552/*****************************************************************************/ 3334/*****************************************************************************/
2553 3335
2554void 3336void
… …
2556{ 3338{
2557 EV_CB_INVOKE ((W)w, revents); 3339 EV_CB_INVOKE ((W)w, revents);
2558} 3340}
2559 3341
2560unsigned int 3342unsigned int
2561ev_pending_count (EV_P) 3343ev_pending_count (EV_P) EV_NOEXCEPT
2562{ 3344{
2563 int pri; 3345 int pri;
2564 unsigned int count = 0; 3346 unsigned int count = 0;
2565 3347
2566 for (pri = NUMPRI; pri--; ) 3348 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3349 count += pendingcnt [pri];
2568 3350
2569 return count; 3351 return count;
2570} 3352}
2571 3353
2572void noinline 3354noinline
3355void
2573ev_invoke_pending (EV_P) 3356ev_invoke_pending (EV_P)
2574{ 3357{
2575 int pri; 3358 pendingpri = NUMPRI;
2576 3359
2577 for (pri = NUMPRI; pri--; ) 3360 do
3361 {
3362 --pendingpri;
3363
3364 /* pendingpri possibly gets modified in the inner loop */
2578 while (pendingcnt [pri]) 3365 while (pendingcnt [pendingpri])
2579 { 3366 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3367 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3368
2582 p->w->pending = 0; 3369 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3370 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2585 } 3372 }
3373 }
3374 while (pendingpri);
2586} 3375}
2587 3376
2588#if EV_IDLE_ENABLE 3377#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3378/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3379/* only when higher priorities are idle" logic */
… …
2648 } 3437 }
2649} 3438}
2650 3439
2651#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2652 3441
2653static void noinline 3442noinline
3443static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3444periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3445{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3446 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); 3447 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3448
… …
2680{ 3470{
2681 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2682 3472
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3473 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3474 {
2685 int feed_count = 0;
2686
2687 do 3475 do
2688 { 3476 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3477 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3478
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3479 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3506 }
2719} 3507}
2720 3508
2721/* simply recalculate all periodics */ 3509/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3510/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3511noinline ecb_cold
3512static void
2724periodics_reschedule (EV_P) 3513periodics_reschedule (EV_P)
2725{ 3514{
2726 int i; 3515 int i;
2727 3516
2728 /* adjust periodics after time jump */ 3517 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3530 reheap (periodics, periodiccnt);
2742} 3531}
2743#endif 3532#endif
2744 3533
2745/* adjust all timers by a given offset */ 3534/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3535noinline ecb_cold
3536static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3537timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3538{
2749 int i; 3539 int i;
2750 3540
2751 for (i = 0; i < timercnt; ++i) 3541 for (i = 0; i < timercnt; ++i)
… …
2825 3615
2826 mn_now = ev_rt_now; 3616 mn_now = ev_rt_now;
2827 } 3617 }
2828} 3618}
2829 3619
2830void 3620int
2831ev_run (EV_P_ int flags) 3621ev_run (EV_P_ int flags)
2832{ 3622{
2833#if EV_FEATURE_API 3623#if EV_FEATURE_API
2834 ++loop_depth; 3624 ++loop_depth;
2835#endif 3625#endif
… …
2948#endif 3738#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 3740 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 3742
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3743 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 3744
3745 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 3746 if (pipe_write_skipped)
2956 { 3747 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3748 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3749 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 3750 }
… …
2992 loop_done = EVBREAK_CANCEL; 3783 loop_done = EVBREAK_CANCEL;
2993 3784
2994#if EV_FEATURE_API 3785#if EV_FEATURE_API
2995 --loop_depth; 3786 --loop_depth;
2996#endif 3787#endif
2997}
2998 3788
3789 return activecnt;
3790}
3791
2999void 3792void
3000ev_break (EV_P_ int how) 3793ev_break (EV_P_ int how) EV_NOEXCEPT
3001{ 3794{
3002 loop_done = how; 3795 loop_done = how;
3003} 3796}
3004 3797
3005void 3798void
3006ev_ref (EV_P) 3799ev_ref (EV_P) EV_NOEXCEPT
3007{ 3800{
3008 ++activecnt; 3801 ++activecnt;
3009} 3802}
3010 3803
3011void 3804void
3012ev_unref (EV_P) 3805ev_unref (EV_P) EV_NOEXCEPT
3013{ 3806{
3014 --activecnt; 3807 --activecnt;
3015} 3808}
3016 3809
3017void 3810void
3018ev_now_update (EV_P) 3811ev_now_update (EV_P) EV_NOEXCEPT
3019{ 3812{
3020 time_update (EV_A_ 1e100); 3813 time_update (EV_A_ 1e100);
3021} 3814}
3022 3815
3023void 3816void
3024ev_suspend (EV_P) 3817ev_suspend (EV_P) EV_NOEXCEPT
3025{ 3818{
3026 ev_now_update (EV_A); 3819 ev_now_update (EV_A);
3027} 3820}
3028 3821
3029void 3822void
3030ev_resume (EV_P) 3823ev_resume (EV_P) EV_NOEXCEPT
3031{ 3824{
3032 ev_tstamp mn_prev = mn_now; 3825 ev_tstamp mn_prev = mn_now;
3033 3826
3034 ev_now_update (EV_A); 3827 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 3828 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3074 w->pending = 0; 3867 w->pending = 0;
3075 } 3868 }
3076} 3869}
3077 3870
3078int 3871int
3079ev_clear_pending (EV_P_ void *w) 3872ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3080{ 3873{
3081 W w_ = (W)w; 3874 W w_ = (W)w;
3082 int pending = w_->pending; 3875 int pending = w_->pending;
3083 3876
3084 if (expect_true (pending)) 3877 if (expect_true (pending))
… …
3116 w->active = 0; 3909 w->active = 0;
3117} 3910}
3118 3911
3119/*****************************************************************************/ 3912/*****************************************************************************/
3120 3913
3121void noinline 3914noinline
3915void
3122ev_io_start (EV_P_ ev_io *w) 3916ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3123{ 3917{
3124 int fd = w->fd; 3918 int fd = w->fd;
3125 3919
3126 if (expect_false (ev_is_active (w))) 3920 if (expect_false (ev_is_active (w)))
3127 return; 3921 return;
… …
3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3924 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3131 3925
3132 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
3133 3927
3134 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3136 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3137 3934
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
3140 3937
3141 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3142} 3939}
3143 3940
3144void noinline 3941noinline
3942void
3145ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 3944{
3147 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
3149 return; 3947 return;
3150 3948
… …
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3956 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 3957
3160 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
3161} 3959}
3162 3960
3163void noinline 3961noinline
3962void
3164ev_timer_start (EV_P_ ev_timer *w) 3963ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3165{ 3964{
3166 if (expect_false (ev_is_active (w))) 3965 if (expect_false (ev_is_active (w)))
3167 return; 3966 return;
3168 3967
3169 ev_at (w) += mn_now; 3968 ev_at (w) += mn_now;
… …
3172 3971
3173 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
3174 3973
3175 ++timercnt; 3974 ++timercnt;
3176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3975 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3177 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3976 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3178 ANHE_w (timers [ev_active (w)]) = (WT)w; 3977 ANHE_w (timers [ev_active (w)]) = (WT)w;
3179 ANHE_at_cache (timers [ev_active (w)]); 3978 ANHE_at_cache (timers [ev_active (w)]);
3180 upheap (timers, ev_active (w)); 3979 upheap (timers, ev_active (w));
3181 3980
3182 EV_FREQUENT_CHECK; 3981 EV_FREQUENT_CHECK;
3183 3982
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3983 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 3984}
3186 3985
3187void noinline 3986noinline
3987void
3188ev_timer_stop (EV_P_ ev_timer *w) 3988ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3189{ 3989{
3190 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
3192 return; 3992 return;
3193 3993
… …
3212 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
3213 4013
3214 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
3215} 4015}
3216 4016
3217void noinline 4017noinline
4018void
3218ev_timer_again (EV_P_ ev_timer *w) 4019ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3219{ 4020{
3220 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
4022
4023 clear_pending (EV_A_ (W)w);
3221 4024
3222 if (ev_is_active (w)) 4025 if (ev_is_active (w))
3223 { 4026 {
3224 if (w->repeat) 4027 if (w->repeat)
3225 { 4028 {
… …
3238 4041
3239 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
3240} 4043}
3241 4044
3242ev_tstamp 4045ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 4046ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3244{ 4047{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4048 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3246} 4049}
3247 4050
3248#if EV_PERIODIC_ENABLE 4051#if EV_PERIODIC_ENABLE
3249void noinline 4052noinline
4053void
3250ev_periodic_start (EV_P_ ev_periodic *w) 4054ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3251{ 4055{
3252 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3253 return; 4057 return;
3254 4058
3255 if (w->reschedule_cb) 4059 if (w->reschedule_cb)
… …
3264 4068
3265 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
3266 4070
3267 ++periodiccnt; 4071 ++periodiccnt;
3268 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4072 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3269 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4073 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3270 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4074 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3271 ANHE_at_cache (periodics [ev_active (w)]); 4075 ANHE_at_cache (periodics [ev_active (w)]);
3272 upheap (periodics, ev_active (w)); 4076 upheap (periodics, ev_active (w));
3273 4077
3274 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
3275 4079
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4080 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4081}
3278 4082
3279void noinline 4083noinline
4084void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4085ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3281{ 4086{
3282 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
3284 return; 4089 return;
3285 4090
… …
3302 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
3303 4108
3304 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3305} 4110}
3306 4111
3307void noinline 4112noinline
4113void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4114ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3309{ 4115{
3310 /* TODO: use adjustheap and recalculation */ 4116 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4117 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4118 ev_periodic_start (EV_A_ w);
3313} 4119}
… …
3317# define SA_RESTART 0 4123# define SA_RESTART 0
3318#endif 4124#endif
3319 4125
3320#if EV_SIGNAL_ENABLE 4126#if EV_SIGNAL_ENABLE
3321 4127
3322void noinline 4128noinline
4129void
3323ev_signal_start (EV_P_ ev_signal *w) 4130ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3324{ 4131{
3325 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3326 return; 4133 return;
3327 4134
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4135 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3330#if EV_MULTIPLICITY 4137#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4138 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4139 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4140
3334 signals [w->signum - 1].loop = EV_A; 4141 signals [w->signum - 1].loop = EV_A;
4142 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4143#endif
3336 4144
3337 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3338 4146
3339#if EV_USE_SIGNALFD 4147#if EV_USE_SIGNALFD
… …
3398 } 4206 }
3399 4207
3400 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3401} 4209}
3402 4210
3403void noinline 4211noinline
4212void
3404ev_signal_stop (EV_P_ ev_signal *w) 4213ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3405{ 4214{
3406 clear_pending (EV_A_ (W)w); 4215 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4216 if (expect_false (!ev_is_active (w)))
3408 return; 4217 return;
3409 4218
… …
3440#endif 4249#endif
3441 4250
3442#if EV_CHILD_ENABLE 4251#if EV_CHILD_ENABLE
3443 4252
3444void 4253void
3445ev_child_start (EV_P_ ev_child *w) 4254ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3446{ 4255{
3447#if EV_MULTIPLICITY 4256#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4257 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4258#endif
3450 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
… …
3457 4266
3458 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3459} 4268}
3460 4269
3461void 4270void
3462ev_child_stop (EV_P_ ev_child *w) 4271ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3463{ 4272{
3464 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3466 return; 4275 return;
3467 4276
… …
3484 4293
3485#define DEF_STAT_INTERVAL 5.0074891 4294#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4295#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4296#define MIN_STAT_INTERVAL 0.1074891
3488 4297
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4298noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4299
3491#if EV_USE_INOTIFY 4300#if EV_USE_INOTIFY
3492 4301
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4302/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4303# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4304
3496static void noinline 4305noinline
4306static void
3497infy_add (EV_P_ ev_stat *w) 4307infy_add (EV_P_ ev_stat *w)
3498{ 4308{
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); 4309 w->wd = inotify_add_watch (fs_fd, w->path,
4310 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4311 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4312 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4313
3501 if (w->wd >= 0) 4314 if (w->wd >= 0)
3502 { 4315 {
3503 struct statfs sfs; 4316 struct statfs sfs;
3504 4317
… …
3508 4321
3509 if (!fs_2625) 4322 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4324 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4325 && (sfs.f_type == 0x1373 /* devfs */
4326 || sfs.f_type == 0x4006 /* fat */
4327 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4328 || sfs.f_type == 0xEF53 /* ext2/3 */
4329 || sfs.f_type == 0x72b6 /* jffs2 */
4330 || sfs.f_type == 0x858458f6 /* ramfs */
4331 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4332 || sfs.f_type == 0x3153464a /* jfs */
4333 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4334 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4335 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4336 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4337 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4338 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4339 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4340 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4376 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4377 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4378}
3560 4379
3561static void noinline 4380noinline
4381static void
3562infy_del (EV_P_ ev_stat *w) 4382infy_del (EV_P_ ev_stat *w)
3563{ 4383{
3564 int slot; 4384 int slot;
3565 int wd = w->wd; 4385 int wd = w->wd;
3566 4386
… …
3573 4393
3574 /* remove this watcher, if others are watching it, they will rearm */ 4394 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4395 inotify_rm_watch (fs_fd, wd);
3576} 4396}
3577 4397
3578static void noinline 4398noinline
4399static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4400infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4401{
3581 if (slot < 0) 4402 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4403 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4404 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4440 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4441 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4442 }
3622} 4443}
3623 4444
3624inline_size void ecb_cold 4445inline_size ecb_cold
4446void
3625ev_check_2625 (EV_P) 4447ev_check_2625 (EV_P)
3626{ 4448{
3627 /* kernels < 2.6.25 are borked 4449 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4450 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4451 */
… …
3634} 4456}
3635 4457
3636inline_size int 4458inline_size int
3637infy_newfd (void) 4459infy_newfd (void)
3638{ 4460{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4461#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4462 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4463 if (fd >= 0)
3642 return fd; 4464 return fd;
3643#endif 4465#endif
3644 return inotify_init (); 4466 return inotify_init ();
… …
3719#else 4541#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4542# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4543#endif
3722 4544
3723void 4545void
3724ev_stat_stat (EV_P_ ev_stat *w) 4546ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3725{ 4547{
3726 if (lstat (w->path, &w->attr) < 0) 4548 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4549 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4550 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4551 w->attr.st_nlink = 1;
3730} 4552}
3731 4553
3732static void noinline 4554noinline
4555static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4556stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4557{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4558 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4559
3737 ev_statdata prev = w->attr; 4560 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4591 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4592 }
3770} 4593}
3771 4594
3772void 4595void
3773ev_stat_start (EV_P_ ev_stat *w) 4596ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3774{ 4597{
3775 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3776 return; 4599 return;
3777 4600
3778 ev_stat_stat (EV_A_ w); 4601 ev_stat_stat (EV_A_ w);
… …
3799 4622
3800 EV_FREQUENT_CHECK; 4623 EV_FREQUENT_CHECK;
3801} 4624}
3802 4625
3803void 4626void
3804ev_stat_stop (EV_P_ ev_stat *w) 4627ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3805{ 4628{
3806 clear_pending (EV_A_ (W)w); 4629 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4630 if (expect_false (!ev_is_active (w)))
3808 return; 4631 return;
3809 4632
… …
3825} 4648}
3826#endif 4649#endif
3827 4650
3828#if EV_IDLE_ENABLE 4651#if EV_IDLE_ENABLE
3829void 4652void
3830ev_idle_start (EV_P_ ev_idle *w) 4653ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3831{ 4654{
3832 if (expect_false (ev_is_active (w))) 4655 if (expect_false (ev_is_active (w)))
3833 return; 4656 return;
3834 4657
3835 pri_adjust (EV_A_ (W)w); 4658 pri_adjust (EV_A_ (W)w);
… …
3840 int active = ++idlecnt [ABSPRI (w)]; 4663 int active = ++idlecnt [ABSPRI (w)];
3841 4664
3842 ++idleall; 4665 ++idleall;
3843 ev_start (EV_A_ (W)w, active); 4666 ev_start (EV_A_ (W)w, active);
3844 4667
3845 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4668 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3846 idles [ABSPRI (w)][active - 1] = w; 4669 idles [ABSPRI (w)][active - 1] = w;
3847 } 4670 }
3848 4671
3849 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3850} 4673}
3851 4674
3852void 4675void
3853ev_idle_stop (EV_P_ ev_idle *w) 4676ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4677{
3855 clear_pending (EV_A_ (W)w); 4678 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4679 if (expect_false (!ev_is_active (w)))
3857 return; 4680 return;
3858 4681
… …
3872} 4695}
3873#endif 4696#endif
3874 4697
3875#if EV_PREPARE_ENABLE 4698#if EV_PREPARE_ENABLE
3876void 4699void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4700ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3878{ 4701{
3879 if (expect_false (ev_is_active (w))) 4702 if (expect_false (ev_is_active (w)))
3880 return; 4703 return;
3881 4704
3882 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
3883 4706
3884 ev_start (EV_A_ (W)w, ++preparecnt); 4707 ev_start (EV_A_ (W)w, ++preparecnt);
3885 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4708 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3886 prepares [preparecnt - 1] = w; 4709 prepares [preparecnt - 1] = w;
3887 4710
3888 EV_FREQUENT_CHECK; 4711 EV_FREQUENT_CHECK;
3889} 4712}
3890 4713
3891void 4714void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 4715ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3893{ 4716{
3894 clear_pending (EV_A_ (W)w); 4717 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4718 if (expect_false (!ev_is_active (w)))
3896 return; 4719 return;
3897 4720
… …
3910} 4733}
3911#endif 4734#endif
3912 4735
3913#if EV_CHECK_ENABLE 4736#if EV_CHECK_ENABLE
3914void 4737void
3915ev_check_start (EV_P_ ev_check *w) 4738ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3916{ 4739{
3917 if (expect_false (ev_is_active (w))) 4740 if (expect_false (ev_is_active (w)))
3918 return; 4741 return;
3919 4742
3920 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
3921 4744
3922 ev_start (EV_A_ (W)w, ++checkcnt); 4745 ev_start (EV_A_ (W)w, ++checkcnt);
3923 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4746 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3924 checks [checkcnt - 1] = w; 4747 checks [checkcnt - 1] = w;
3925 4748
3926 EV_FREQUENT_CHECK; 4749 EV_FREQUENT_CHECK;
3927} 4750}
3928 4751
3929void 4752void
3930ev_check_stop (EV_P_ ev_check *w) 4753ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3931{ 4754{
3932 clear_pending (EV_A_ (W)w); 4755 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 4756 if (expect_false (!ev_is_active (w)))
3934 return; 4757 return;
3935 4758
… …
3947 EV_FREQUENT_CHECK; 4770 EV_FREQUENT_CHECK;
3948} 4771}
3949#endif 4772#endif
3950 4773
3951#if EV_EMBED_ENABLE 4774#if EV_EMBED_ENABLE
3952void noinline 4775noinline
4776void
3953ev_embed_sweep (EV_P_ ev_embed *w) 4777ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3954{ 4778{
3955 ev_run (w->other, EVRUN_NOWAIT); 4779 ev_run (w->other, EVRUN_NOWAIT);
3956} 4780}
3957 4781
3958static void 4782static void
… …
4006 ev_idle_stop (EV_A_ idle); 4830 ev_idle_stop (EV_A_ idle);
4007} 4831}
4008#endif 4832#endif
4009 4833
4010void 4834void
4011ev_embed_start (EV_P_ ev_embed *w) 4835ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4012{ 4836{
4013 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4014 return; 4838 return;
4015 4839
4016 { 4840 {
… …
4037 4861
4038 EV_FREQUENT_CHECK; 4862 EV_FREQUENT_CHECK;
4039} 4863}
4040 4864
4041void 4865void
4042ev_embed_stop (EV_P_ ev_embed *w) 4866ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4043{ 4867{
4044 clear_pending (EV_A_ (W)w); 4868 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4869 if (expect_false (!ev_is_active (w)))
4046 return; 4870 return;
4047 4871
… …
4057} 4881}
4058#endif 4882#endif
4059 4883
4060#if EV_FORK_ENABLE 4884#if EV_FORK_ENABLE
4061void 4885void
4062ev_fork_start (EV_P_ ev_fork *w) 4886ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4063{ 4887{
4064 if (expect_false (ev_is_active (w))) 4888 if (expect_false (ev_is_active (w)))
4065 return; 4889 return;
4066 4890
4067 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4068 4892
4069 ev_start (EV_A_ (W)w, ++forkcnt); 4893 ev_start (EV_A_ (W)w, ++forkcnt);
4070 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4894 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4071 forks [forkcnt - 1] = w; 4895 forks [forkcnt - 1] = w;
4072 4896
4073 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
4074} 4898}
4075 4899
4076void 4900void
4077ev_fork_stop (EV_P_ ev_fork *w) 4901ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4078{ 4902{
4079 clear_pending (EV_A_ (W)w); 4903 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 4904 if (expect_false (!ev_is_active (w)))
4081 return; 4905 return;
4082 4906
… …
4095} 4919}
4096#endif 4920#endif
4097 4921
4098#if EV_CLEANUP_ENABLE 4922#if EV_CLEANUP_ENABLE
4099void 4923void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 4924ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4101{ 4925{
4102 if (expect_false (ev_is_active (w))) 4926 if (expect_false (ev_is_active (w)))
4103 return; 4927 return;
4104 4928
4105 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4106 4930
4107 ev_start (EV_A_ (W)w, ++cleanupcnt); 4931 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4932 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4109 cleanups [cleanupcnt - 1] = w; 4933 cleanups [cleanupcnt - 1] = w;
4110 4934
4111 /* cleanup watchers should never keep a refcount on the loop */ 4935 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A); 4936 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
4114} 4938}
4115 4939
4116void 4940void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 4941ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4118{ 4942{
4119 clear_pending (EV_A_ (W)w); 4943 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4944 if (expect_false (!ev_is_active (w)))
4121 return; 4945 return;
4122 4946
… …
4136} 4960}
4137#endif 4961#endif
4138 4962
4139#if EV_ASYNC_ENABLE 4963#if EV_ASYNC_ENABLE
4140void 4964void
4141ev_async_start (EV_P_ ev_async *w) 4965ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4142{ 4966{
4143 if (expect_false (ev_is_active (w))) 4967 if (expect_false (ev_is_active (w)))
4144 return; 4968 return;
4145 4969
4146 w->sent = 0; 4970 w->sent = 0;
… …
4148 evpipe_init (EV_A); 4972 evpipe_init (EV_A);
4149 4973
4150 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4151 4975
4152 ev_start (EV_A_ (W)w, ++asynccnt); 4976 ev_start (EV_A_ (W)w, ++asynccnt);
4153 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4977 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4154 asyncs [asynccnt - 1] = w; 4978 asyncs [asynccnt - 1] = w;
4155 4979
4156 EV_FREQUENT_CHECK; 4980 EV_FREQUENT_CHECK;
4157} 4981}
4158 4982
4159void 4983void
4160ev_async_stop (EV_P_ ev_async *w) 4984ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4161{ 4985{
4162 clear_pending (EV_A_ (W)w); 4986 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4987 if (expect_false (!ev_is_active (w)))
4164 return; 4988 return;
4165 4989
… …
4176 5000
4177 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
4178} 5002}
4179 5003
4180void 5004void
4181ev_async_send (EV_P_ ev_async *w) 5005ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4182{ 5006{
4183 w->sent = 1; 5007 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 5008 evpipe_write (EV_A_ &async_pending);
4185} 5009}
4186#endif 5010#endif
… …
4223 5047
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5048 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 5049}
4226 5050
4227void 5051void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5052ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4229{ 5053{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5054 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231
4232 if (expect_false (!once))
4233 {
4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4235 return;
4236 }
4237 5055
4238 once->cb = cb; 5056 once->cb = cb;
4239 once->arg = arg; 5057 once->arg = arg;
4240 5058
4241 ev_init (&once->io, once_cb_io); 5059 ev_init (&once->io, once_cb_io);
… …
4254} 5072}
4255 5073
4256/*****************************************************************************/ 5074/*****************************************************************************/
4257 5075
4258#if EV_WALK_ENABLE 5076#if EV_WALK_ENABLE
4259void ecb_cold 5077ecb_cold
5078void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5079ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4261{ 5080{
4262 int i, j; 5081 int i, j;
4263 ev_watcher_list *wl, *wn; 5082 ev_watcher_list *wl, *wn;
4264 5083
4265 if (types & (EV_IO | EV_EMBED)) 5084 if (types & (EV_IO | EV_EMBED))
… …
4371 5190
4372#if EV_MULTIPLICITY 5191#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5192 #include "ev_wrap.h"
4374#endif 5193#endif
4375 5194
4376EV_CPP(})
4377

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