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Comparing libev/ev.c (file contents):
Revision 1.393 by root, Thu Aug 4 14:47:48 2011 UTC vs.
Revision 1.498 by root, Wed Jun 26 00:01:46 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
302#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 340# else
306# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
347 382
348#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 385#endif
351 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 406# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
360# else 411# else
… …
363# endif 414# endif
364#endif 415#endif
365 416
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 418
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
377#endif 422#endif
378 423
… …
386# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
387#endif 432#endif
388 433
389#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
393# endif 446# endif
394#endif 447#endif
395 448
396#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
397# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
403# endif 456# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 457#endif
409 458
410#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 461# include <stdint.h>
… …
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 0x00010006
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#endif 675#endif
544 676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
545#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __x86 688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 693 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,4" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dsb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 738 #endif
564 #endif 739 #endif
565#endif 740#endif
566 741
567#ifndef ECB_MEMORY_FENCE 742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 770 #elif defined _WIN32
578 #include <WinNT.h> 771 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
580 #endif 792 #endif
581#endif 793#endif
582 794
583#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 810 #endif
599#endif 811#endif
600 812
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 815#endif
604 816
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 819#endif
608 820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
609/*****************************************************************************/ 825/*****************************************************************************/
610 826
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 828 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
617#elif ECB_C99 831#elif ECB_C99
618 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
632 846
633#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 852
638#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
639 854
640#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 879#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
650#endif 881#endif
651 882
652/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
657#endif 890#endif
658 891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
661#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
664 927
665#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
683 946
684/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 958 /* no popcountll */
693#else 959#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 961 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
697 { 963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
698 int r = 0; 969 int r = 0;
699 970
700 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
701 972
702#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
714#endif 985#endif
715 986
716 return r; 987 return r;
988#endif
717 } 989 }
718 990
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 992 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
722 { 994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
725 } 1003 }
726 1004
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1006 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
730 { 1008 {
731 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1012 x *= 0x01010101;
735 1013
736 return x >> 24; 1014 return x >> 24;
737 } 1015 }
738 1016
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
742 int r = 0; 1025 int r = 0;
743 1026
744 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
749 1032
750 return r; 1033 return r;
1034#endif
751 } 1035 }
752 1036
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
756 int r = 0; 1045 int r = 0;
757 1046
758 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
759 1048
760 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
761 } 1051 }
762#endif 1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
763 1088
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1090/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1092ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
769{ 1094{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1096}
772 1097
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1106
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1115
791#if ECB_GCC_VERSION(4,3) 1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1129#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
799 { 1133 {
800 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
801 } 1135 }
802 1136
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
806 { 1140 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1142 }
809 1143
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
813 { 1147 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1149 }
816#endif 1150#endif
817 1151
818#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
820#else 1154#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1158#endif
825 1159
826/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1162
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1164ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
832{ 1166{
833 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
835} 1189}
836 1190
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
841 1195
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1198#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1216#endif
847 1217
848#if ecb_cplusplus_does_not_suck 1218#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1220 template<typename T, int N>
… …
854 } 1224 }
855#else 1225#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1227#endif
858 1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
859#endif 1534#endif
860 1535
861/* ECB.H END */ 1536/* ECB.H END */
862 1537
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
864# undef ECB_MEMORY_FENCE 1549#ifndef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE 1550# define ECB_MEMORY_FENCE do { } while (0)
866# undef ECB_MEMORY_FENCE_RELEASE 1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
867#endif 1553#endif
868 1554
869#define expect_false(cond) ecb_expect_false (cond) 1555#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond) 1556#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline 1557#define noinline ecb_noinline
… …
873#define inline_size ecb_inline 1559#define inline_size ecb_inline
874 1560
875#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
876# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
877#else 1563#else
878# define inline_speed static noinline 1564# define inline_speed noinline static
879#endif 1565#endif
880 1566
881#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
882 1568
883#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
884# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
885#else 1571#else
886# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
887#endif 1573#endif
888 1574
889#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
890#define EMPTY2(a,b) /* used to suppress some warnings */
891 1576
892typedef ev_watcher *W; 1577typedef ev_watcher *W;
893typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
894typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
895 1580
… …
920# include "ev_win32.c" 1605# include "ev_win32.c"
921#endif 1606#endif
922 1607
923/*****************************************************************************/ 1608/*****************************************************************************/
924 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
925/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
926 1615
927#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
928# include <math.h> 1617# include <math.h>
929# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
930#else 1619#else
931 1620
932#include <float.h> 1621#include <float.h>
933 1622
934/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
935static ev_tstamp noinline 1625static ev_tstamp
936ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
937{ 1627{
938 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
939#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
940 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
972 1662
973#ifdef __linux 1663#ifdef __linux
974# include <sys/utsname.h> 1664# include <sys/utsname.h>
975#endif 1665#endif
976 1666
977static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
978ev_linux_version (void) 1669ev_linux_version (void)
979{ 1670{
980#ifdef __linux 1671#ifdef __linux
981 unsigned int v = 0; 1672 unsigned int v = 0;
982 struct utsname buf; 1673 struct utsname buf;
… …
1011} 1702}
1012 1703
1013/*****************************************************************************/ 1704/*****************************************************************************/
1014 1705
1015#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1016static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1017ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1018{ 1710{
1019 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1020} 1712}
1021#endif 1713#endif
1022 1714
1023static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1024 1716
1025void ecb_cold 1717ecb_cold
1718void
1026ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1027{ 1720{
1028 syserr_cb = cb; 1721 syserr_cb = cb;
1029} 1722}
1030 1723
1031static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1032ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1033{ 1727{
1034 if (!msg) 1728 if (!msg)
1035 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1036 1730
… …
1049 abort (); 1743 abort ();
1050 } 1744 }
1051} 1745}
1052 1746
1053static void * 1747static void *
1054ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1055{ 1749{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
1059 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1060 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
1061 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
1062 */ 1755 */
1063 1756
1064 if (size) 1757 if (size)
1065 return realloc (ptr, size); 1758 return realloc (ptr, size);
1066 1759
1067 free (ptr); 1760 free (ptr);
1068 return 0; 1761 return 0;
1069#endif
1070} 1762}
1071 1763
1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1073 1765
1074void ecb_cold 1766ecb_cold
1767void
1075ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1076{ 1769{
1077 alloc = cb; 1770 alloc = cb;
1078} 1771}
1079 1772
1080inline_speed void * 1773inline_speed void *
… …
1107typedef struct 1800typedef struct
1108{ 1801{
1109 WL head; 1802 WL head;
1110 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1111 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1112 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
1113 unsigned char unused; 1806 unsigned char unused;
1114#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1115 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1116#endif 1809#endif
1117#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1168 #undef VAR 1861 #undef VAR
1169 }; 1862 };
1170 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
1171 1864
1172 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
1173 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1174 1867
1175#else 1868#else
1176 1869
1177 ev_tstamp ev_rt_now; 1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1178 #define VAR(name,decl) static decl; 1871 #define VAR(name,decl) static decl;
1179 #include "ev_vars.h" 1872 #include "ev_vars.h"
1180 #undef VAR 1873 #undef VAR
1181 1874
1182 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
… …
1197 1890
1198/*****************************************************************************/ 1891/*****************************************************************************/
1199 1892
1200#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1201ev_tstamp 1894ev_tstamp
1202ev_time (void) 1895ev_time (void) EV_NOEXCEPT
1203{ 1896{
1204#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1205 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1206 { 1899 {
1207 struct timespec ts; 1900 struct timespec ts;
… …
1231 return ev_time (); 1924 return ev_time ();
1232} 1925}
1233 1926
1234#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1235ev_tstamp 1928ev_tstamp
1236ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
1237{ 1930{
1238 return ev_rt_now; 1931 return ev_rt_now;
1239} 1932}
1240#endif 1933#endif
1241 1934
1242void 1935void
1243ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1244{ 1937{
1245 if (delay > 0.) 1938 if (delay > 0.)
1246 { 1939 {
1247#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1248 struct timespec ts; 1941 struct timespec ts;
1249 1942
1250 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1251 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1252#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
1253 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1254#else 1949#else
1255 struct timeval tv; 1950 struct timeval tv;
1256 1951
1257 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1276 1971
1277 do 1972 do
1278 ncur <<= 1; 1973 ncur <<= 1;
1279 while (cnt > ncur); 1974 while (cnt > ncur);
1280 1975
1281 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1282 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1283 { 1978 {
1284 ncur *= elem; 1979 ncur *= elem;
1285 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1286 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
1288 } 1983 }
1289 1984
1290 return ncur; 1985 return ncur;
1291} 1986}
1292 1987
1293static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1294array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1295{ 1991{
1296 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1297 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1298} 1994}
1299 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1300#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1301 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1302 2000
1303#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1304 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1305 { \ 2003 { \
1306 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1307 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1308 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1309 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1310 } 2008 }
1311 2009
1312#if 0 2010#if 0
1313#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1314 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1323 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1324 2022
1325/*****************************************************************************/ 2023/*****************************************************************************/
1326 2024
1327/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1328static void noinline 2026noinline
2027static void
1329pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1330{ 2029{
1331} 2030}
1332 2031
1333void noinline 2032noinline
2033void
1334ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1335{ 2035{
1336 W w_ = (W)w; 2036 W w_ = (W)w;
1337 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1338 2038
1339 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1340 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1341 else 2041 else
1342 { 2042 {
1343 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1344 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1345 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1346 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1347 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
1348} 2050}
1349 2051
1350inline_speed void 2052inline_speed void
1351feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1352{ 2054{
1353 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1354 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1355} 2057}
1356 2058
1357inline_size void 2059inline_size void
1358feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1398 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1400} 2102}
1401 2103
1402void 2104void
1403ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1404{ 2106{
1405 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1406 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1407} 2109}
1408 2110
… …
1445 ev_io *w; 2147 ev_io *w;
1446 2148
1447 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1448 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1449 2151
1450 anfd->reify = 0; 2152 anfd->reify = 0;
1451 2153
1452 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1453 { 2155 {
1454 anfd->events = 0; 2156 anfd->events = 0;
1455 2157
… …
1466 2168
1467 fdchangecnt = 0; 2169 fdchangecnt = 0;
1468} 2170}
1469 2171
1470/* something about the given fd changed */ 2172/* something about the given fd changed */
1471inline_size void 2173inline_size
2174void
1472fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1473{ 2176{
1474 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1475 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1476 2179
1477 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1478 { 2181 {
1479 ++fdchangecnt; 2182 ++fdchangecnt;
1480 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1481 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1482 } 2185 }
1483} 2186}
1484 2187
1485/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1486inline_speed void ecb_cold 2189inline_speed ecb_cold void
1487fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1488{ 2191{
1489 ev_io *w; 2192 ev_io *w;
1490 2193
1491 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1494 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1495 } 2198 }
1496} 2199}
1497 2200
1498/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1499inline_size int ecb_cold 2202inline_size ecb_cold int
1500fd_valid (int fd) 2203fd_valid (int fd)
1501{ 2204{
1502#ifdef _WIN32 2205#ifdef _WIN32
1503 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1504#else 2207#else
1505 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1506#endif 2209#endif
1507} 2210}
1508 2211
1509/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1510static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1511fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1512{ 2216{
1513 int fd; 2217 int fd;
1514 2218
1515 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1517 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1518 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1519} 2223}
1520 2224
1521/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1522static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1523fd_enomem (EV_P) 2228fd_enomem (EV_P)
1524{ 2229{
1525 int fd; 2230 int fd;
1526 2231
1527 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1531 break; 2236 break;
1532 } 2237 }
1533} 2238}
1534 2239
1535/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1536static void noinline 2241noinline
2242static void
1537fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1538{ 2244{
1539 int fd; 2245 int fd;
1540 2246
1541 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1722 2428
1723/*****************************************************************************/ 2429/*****************************************************************************/
1724 2430
1725#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1726 2432
1727static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1728evpipe_init (EV_P) 2435evpipe_init (EV_P)
1729{ 2436{
1730 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1731 { 2438 {
2439 int fds [2];
2440
1732# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1735 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1736 2446
1737 if (evfd >= 0) 2447 if (fds [1] < 0)
2448# endif
1738 { 2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
1739 evpipe [0] = -1; 2456 evpipe [0] = fds [0];
1740 fd_intern (evfd); /* doing it twice doesn't hurt */ 2457
1741 ev_io_set (&pipe_w, evfd, EV_READ); 2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
2479inline_speed void
2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2481{
2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2483
2484 if (expect_true (*flag))
2485 return;
2486
2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
2503#if EV_USE_EVENTFD
2504 if (evpipe [0] < 0)
2505 {
2506 uint64_t counter = 1;
2507 write (evpipe [1], &counter, sizeof (uint64_t));
1742 } 2508 }
1743 else 2509 else
1744# endif 2510#endif
1745 { 2511 {
1746 while (pipe (evpipe)) 2512#ifdef _WIN32
1747 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1748 2514 DWORD sent;
1749 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1750 fd_intern (evpipe [1]); 2516 buf.len = 1;
1751 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1752 } 2518#else
1753
1754 ev_io_start (EV_A_ &pipe_w);
1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1756 }
1757}
1758
1759inline_speed void
1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1761{
1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1779 old_errno = errno; /* save errno because write will clobber it */
1780
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 {
1784 uint64_t counter = 1;
1785 write (evfd, &counter, sizeof (uint64_t));
1786 }
1787 else
1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1795 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1796 } 2521 }
1797 2522
1798 errno = old_errno; 2523 errno = old_errno;
1799 } 2524 }
1800} 2525}
… …
1807 int i; 2532 int i;
1808 2533
1809 if (revents & EV_READ) 2534 if (revents & EV_READ)
1810 { 2535 {
1811#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1812 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1813 { 2538 {
1814 uint64_t counter; 2539 uint64_t counter;
1815 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1816 } 2541 }
1817 else 2542 else
1818#endif 2543#endif
1819 { 2544 {
1820 char dummy; 2545 char dummy[4];
1821 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1822 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
1823 } 2556 }
1824 } 2557 }
1825 2558
1826 pipe_write_skipped = 0; 2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1827 2562
1828#if EV_SIGNAL_ENABLE 2563#if EV_SIGNAL_ENABLE
1829 if (sig_pending) 2564 if (sig_pending)
1830 { 2565 {
1831 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1832 2569
1833 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1834 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1835 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1836 } 2573 }
… …
1838 2575
1839#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1840 if (async_pending) 2577 if (async_pending)
1841 { 2578 {
1842 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1843 2582
1844 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1845 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1846 { 2585 {
1847 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1848 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1849 } 2589 }
1850 } 2590 }
1851#endif 2591#endif
1852} 2592}
1853 2593
1854/*****************************************************************************/ 2594/*****************************************************************************/
1855 2595
1856void 2596void
1857ev_feed_signal (int signum) 2597ev_feed_signal (int signum) EV_NOEXCEPT
1858{ 2598{
1859#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
1860 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
1861 2603
1862 if (!EV_A) 2604 if (!EV_A)
1863 return; 2605 return;
1864#endif 2606#endif
1865 2607
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1; 2608 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending); 2609 evpipe_write (EV_A_ &sig_pending);
1871} 2610}
1872 2611
1873static void 2612static void
… …
1878#endif 2617#endif
1879 2618
1880 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
1881} 2620}
1882 2621
1883void noinline 2622noinline
2623void
1884ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1885{ 2625{
1886 WL w; 2626 WL w;
1887 2627
1888 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1889 return; 2629 return;
1890 2630
1891 --signum; 2631 --signum;
1892 2632
1893#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1897 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1898 return; 2638 return;
1899#endif 2639#endif
1900 2640
1901 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1902 2643
1903 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1905} 2646}
1906 2647
… …
1997# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
1998#endif 2739#endif
1999#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2000# include "ev_epoll.c" 2741# include "ev_epoll.c"
2001#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2002#if EV_USE_POLL 2746#if EV_USE_POLL
2003# include "ev_poll.c" 2747# include "ev_poll.c"
2004#endif 2748#endif
2005#if EV_USE_SELECT 2749#if EV_USE_SELECT
2006# include "ev_select.c" 2750# include "ev_select.c"
2007#endif 2751#endif
2008 2752
2009int ecb_cold 2753ecb_cold int
2010ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
2011{ 2755{
2012 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2013} 2757}
2014 2758
2015int ecb_cold 2759ecb_cold int
2016ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
2017{ 2761{
2018 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2019} 2763}
2020 2764
2021/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
2022int inline_size ecb_cold 2766inline_size ecb_cold int
2023enable_secure (void) 2767enable_secure (void)
2024{ 2768{
2025#ifdef _WIN32 2769#ifdef _WIN32
2026 return 0; 2770 return 0;
2027#else 2771#else
2028 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2029 || getgid () != getegid (); 2773 || getgid () != getegid ();
2030#endif 2774#endif
2031} 2775}
2032 2776
2033unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2034ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
2035{ 2780{
2036 unsigned int flags = 0; 2781 unsigned int flags = 0;
2037 2782
2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2039 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2040 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2041 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2042 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2043 2789
2044 return flags; 2790 return flags;
2045} 2791}
2046 2792
2047unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2048ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
2049{ 2796{
2050 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2051 2798
2052#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2053 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2061#endif 2808#endif
2062#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2063 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2064#endif 2811#endif
2065 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2066 return flags; 2818 return flags;
2067} 2819}
2068 2820
2069unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2070ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
2071{ 2824{
2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2073 2826
2074 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2075 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2077 2830
2078 return flags; 2831 return flags;
2079} 2832}
2080 2833
2081unsigned int 2834unsigned int
2082ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
2083{ 2836{
2084 return backend; 2837 return backend;
2085} 2838}
2086 2839
2087#if EV_FEATURE_API 2840#if EV_FEATURE_API
2088unsigned int 2841unsigned int
2089ev_iteration (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
2090{ 2843{
2091 return loop_count; 2844 return loop_count;
2092} 2845}
2093 2846
2094unsigned int 2847unsigned int
2095ev_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
2096{ 2849{
2097 return loop_depth; 2850 return loop_depth;
2098} 2851}
2099 2852
2100void 2853void
2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2102{ 2855{
2103 io_blocktime = interval; 2856 io_blocktime = interval;
2104} 2857}
2105 2858
2106void 2859void
2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2108{ 2861{
2109 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2110} 2863}
2111 2864
2112void 2865void
2113ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2114{ 2867{
2115 userdata = data; 2868 userdata = data;
2116} 2869}
2117 2870
2118void * 2871void *
2119ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
2120{ 2873{
2121 return userdata; 2874 return userdata;
2122} 2875}
2123 2876
2124void 2877void
2125ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2126{ 2879{
2127 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2128} 2881}
2129 2882
2130void 2883void
2131ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2132{ 2885{
2133 release_cb = release; 2886 release_cb = release;
2134 acquire_cb = acquire; 2887 acquire_cb = acquire;
2135} 2888}
2136#endif 2889#endif
2137 2890
2138/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2139static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2140loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2141{ 2895{
2142 if (!backend) 2896 if (!backend)
2143 { 2897 {
2144 origflags = flags; 2898 origflags = flags;
2145 2899
… …
2190#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
2191 async_pending = 0; 2945 async_pending = 0;
2192#endif 2946#endif
2193 pipe_write_skipped = 0; 2947 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0; 2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2195#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif 2953#endif
2198#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2201 2957
2202 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2203 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2204 2960
2205#if EV_USE_IOCP 2961#if EV_USE_IOCP
2206 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2207#endif 2963#endif
2208#if EV_USE_PORT 2964#if EV_USE_PORT
2209 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2210#endif 2966#endif
2211#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2212 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2213#endif 2972#endif
2214#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2216#endif 2975#endif
2217#if EV_USE_POLL 2976#if EV_USE_POLL
2218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2219#endif 2978#endif
2220#if EV_USE_SELECT 2979#if EV_USE_SELECT
2221 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2222#endif 2981#endif
2223 2982
2224 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2225 2984
2226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2229#endif 2988#endif
2230 } 2989 }
2231} 2990}
2232 2991
2233/* free up a loop structure */ 2992/* free up a loop structure */
2234void ecb_cold 2993ecb_cold
2994void
2235ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2236{ 2996{
2237 int i; 2997 int i;
2238 2998
2239#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2250 EV_INVOKE_PENDING; 3010 EV_INVOKE_PENDING;
2251 } 3011 }
2252#endif 3012#endif
2253 3013
2254#if EV_CHILD_ENABLE 3014#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev)) 3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2256 { 3016 {
2257 ev_ref (EV_A); /* child watcher */ 3017 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev); 3018 ev_signal_stop (EV_A_ &childev);
2259 } 3019 }
2260#endif 3020#endif
… …
2262 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
2263 { 3023 {
2264 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
2265 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
2266 3026
2267#if EV_USE_EVENTFD
2268 if (evfd >= 0)
2269 close (evfd);
2270#endif
2271
2272 if (evpipe [0] >= 0)
2273 {
2274 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2275 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2276 }
2277 } 3029 }
2278 3030
2279#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
2281 close (sigfd); 3033 close (sigfd);
… …
2288 3040
2289 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2290 close (backend_fd); 3042 close (backend_fd);
2291 3043
2292#if EV_USE_IOCP 3044#if EV_USE_IOCP
2293 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2294#endif 3046#endif
2295#if EV_USE_PORT 3047#if EV_USE_PORT
2296 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2297#endif 3049#endif
2298#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2299 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2300#endif 3055#endif
2301#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2302 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2303#endif 3058#endif
2304#if EV_USE_POLL 3059#if EV_USE_POLL
2305 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2306#endif 3061#endif
2307#if EV_USE_SELECT 3062#if EV_USE_SELECT
2308 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2309#endif 3064#endif
2310 3065
2311 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2312 { 3067 {
2313 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2355 3110
2356inline_size void 3111inline_size void
2357loop_fork (EV_P) 3112loop_fork (EV_P)
2358{ 3113{
2359#if EV_USE_PORT 3114#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2361#endif 3116#endif
2362#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2364#endif 3122#endif
2365#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2367#endif 3125#endif
2368#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2369 infy_fork (EV_A); 3127 infy_fork (EV_A);
2370#endif 3128#endif
2371 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2372 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2373 { 3132 {
2374 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2375 3134
2376 ev_ref (EV_A); 3135 ev_ref (EV_A);
2377 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
2378 3137
2379#if EV_USE_EVENTFD
2380 if (evfd >= 0)
2381 close (evfd);
2382#endif
2383
2384 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
2385 {
2386 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
2387 EV_WIN32_CLOSE_FD (evpipe [1]);
2388 }
2389 3140
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2391 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
2392 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
2393 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2394#endif
2395 } 3144 }
3145#endif
2396 3146
2397 postfork = 0; 3147 postfork = 0;
2398} 3148}
2399 3149
2400#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2401 3151
3152ecb_cold
2402struct ev_loop * ecb_cold 3153struct ev_loop *
2403ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2404{ 3155{
2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2406 3157
2407 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2408 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2415} 3166}
2416 3167
2417#endif /* multiplicity */ 3168#endif /* multiplicity */
2418 3169
2419#if EV_VERIFY 3170#if EV_VERIFY
2420static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2421verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2422{ 3174{
2423 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2424 3176
2425 if (w->pending) 3177 if (w->pending)
2426 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2427} 3179}
2428 3180
2429static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2430verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2431{ 3184{
2432 int i; 3185 int i;
2433 3186
2434 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2439 3192
2440 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2441 } 3194 }
2442} 3195}
2443 3196
2444static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2445array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2446{ 3200{
2447 while (cnt--) 3201 while (cnt--)
2448 { 3202 {
2449 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2452} 3206}
2453#endif 3207#endif
2454 3208
2455#if EV_FEATURE_API 3209#if EV_FEATURE_API
2456void ecb_cold 3210void ecb_cold
2457ev_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
2458{ 3212{
2459#if EV_VERIFY 3213#if EV_VERIFY
2460 int i; 3214 int i;
2461 WL w; 3215 WL w, w2;
2462 3216
2463 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
2464 3218
2465 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
2466 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2468 3222
2469 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
2470 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
2471 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
2472 { 3229 {
2473 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
2474 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2475 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2476 } 3240 }
3241 }
2477 3242
2478 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
2479 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
2480 3245
2481#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
2527#endif 3292#endif
2528} 3293}
2529#endif 3294#endif
2530 3295
2531#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2532struct ev_loop * ecb_cold 3298struct ev_loop *
2533#else 3299#else
2534int 3300int
2535#endif 3301#endif
2536ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2537{ 3303{
2538 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2539 { 3305 {
2540#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2541 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2560 3326
2561 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2562} 3328}
2563 3329
2564void 3330void
2565ev_loop_fork (EV_P) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2566{ 3332{
2567 postfork = 1; /* must be in line with ev_default_fork */ 3333 postfork = 1;
2568} 3334}
2569 3335
2570/*****************************************************************************/ 3336/*****************************************************************************/
2571 3337
2572void 3338void
… …
2574{ 3340{
2575 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2576} 3342}
2577 3343
2578unsigned int 3344unsigned int
2579ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
2580{ 3346{
2581 int pri; 3347 int pri;
2582 unsigned int count = 0; 3348 unsigned int count = 0;
2583 3349
2584 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2585 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2586 3352
2587 return count; 3353 return count;
2588} 3354}
2589 3355
2590void noinline 3356noinline
3357void
2591ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2592{ 3359{
2593 int pri; 3360 pendingpri = NUMPRI;
2594 3361
2595 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2596 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
2597 { 3368 {
2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2599 3370
2600 p->w->pending = 0; 3371 p->w->pending = 0;
2601 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2602 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2603 } 3374 }
3375 }
3376 while (pendingpri);
2604} 3377}
2605 3378
2606#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2607/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2666 } 3439 }
2667} 3440}
2668 3441
2669#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2670 3443
2671static void noinline 3444noinline
3445static void
2672periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2673{ 3447{
2674 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2675 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2676 3450
… …
2698{ 3472{
2699 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2700 3474
2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2702 { 3476 {
2703 int feed_count = 0;
2704
2705 do 3477 do
2706 { 3478 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708 3480
2709 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2736 } 3508 }
2737} 3509}
2738 3510
2739/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2740/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2741static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2742periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2743{ 3516{
2744 int i; 3517 int i;
2745 3518
2746 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2759 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2760} 3533}
2761#endif 3534#endif
2762 3535
2763/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2764static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2765timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2766{ 3540{
2767 int i; 3541 int i;
2768 3542
2769 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2843 3617
2844 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2845 } 3619 }
2846} 3620}
2847 3621
2848void 3622int
2849ev_run (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2850{ 3624{
2851#if EV_FEATURE_API 3625#if EV_FEATURE_API
2852 ++loop_depth; 3626 ++loop_depth;
2853#endif 3627#endif
… …
2966#endif 3740#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2968 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970 3744
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2972 3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
2973 if (pipe_write_skipped) 3748 if (pipe_write_skipped)
2974 { 3749 {
2975 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 } 3752 }
… …
3010 loop_done = EVBREAK_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
3011 3786
3012#if EV_FEATURE_API 3787#if EV_FEATURE_API
3013 --loop_depth; 3788 --loop_depth;
3014#endif 3789#endif
3015}
3016 3790
3791 return activecnt;
3792}
3793
3017void 3794void
3018ev_break (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
3019{ 3796{
3020 loop_done = how; 3797 loop_done = how;
3021} 3798}
3022 3799
3023void 3800void
3024ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
3025{ 3802{
3026 ++activecnt; 3803 ++activecnt;
3027} 3804}
3028 3805
3029void 3806void
3030ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
3031{ 3808{
3032 --activecnt; 3809 --activecnt;
3033} 3810}
3034 3811
3035void 3812void
3036ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
3037{ 3814{
3038 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
3039} 3816}
3040 3817
3041void 3818void
3042ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
3043{ 3820{
3044 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3045} 3822}
3046 3823
3047void 3824void
3048ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
3049{ 3826{
3050 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
3051 3828
3052 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3092 w->pending = 0; 3869 w->pending = 0;
3093 } 3870 }
3094} 3871}
3095 3872
3096int 3873int
3097ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3098{ 3875{
3099 W w_ = (W)w; 3876 W w_ = (W)w;
3100 int pending = w_->pending; 3877 int pending = w_->pending;
3101 3878
3102 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
3134 w->active = 0; 3911 w->active = 0;
3135} 3912}
3136 3913
3137/*****************************************************************************/ 3914/*****************************************************************************/
3138 3915
3139void noinline 3916noinline
3917void
3140ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3141{ 3919{
3142 int fd = w->fd; 3920 int fd = w->fd;
3143 3921
3144 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3145 return; 3923 return;
3146 3924
3147 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3148 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3149 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
3150 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
3151 3932
3152 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3154 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
3936
3937 /* common bug, apparently */
3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3155 3939
3156 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3940 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3157 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
3158 3942
3159 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
3160} 3944}
3161 3945
3162void noinline 3946noinline
3947void
3163ev_io_stop (EV_P_ ev_io *w) 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3164{ 3949{
3165 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3167 return; 3952 return;
3168 3953
3169 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3954 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3170 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
3171 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3172 3960
3173 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
3174 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
3175 3963
3176 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3177 3965
3178 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3179} 3967}
3180 3968
3181void noinline 3969noinline
3970void
3182ev_timer_start (EV_P_ ev_timer *w) 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3183{ 3972{
3184 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3185 return; 3974 return;
3186 3975
3187 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
3190 3979
3191 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
3192 3981
3193 ++timercnt; 3982 ++timercnt;
3194 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3195 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3196 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
3197 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
3198 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
3199 3988
3200 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
3201 3990
3202 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3991 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3203} 3992}
3204 3993
3205void noinline 3994noinline
3995void
3206ev_timer_stop (EV_P_ ev_timer *w) 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3207{ 3997{
3208 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
3209 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
3210 return; 4000 return;
3211 4001
… …
3230 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
3231 4021
3232 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
3233} 4023}
3234 4024
3235void noinline 4025noinline
4026void
3236ev_timer_again (EV_P_ ev_timer *w) 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3237{ 4028{
3238 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
4030
4031 clear_pending (EV_A_ (W)w);
3239 4032
3240 if (ev_is_active (w)) 4033 if (ev_is_active (w))
3241 { 4034 {
3242 if (w->repeat) 4035 if (w->repeat)
3243 { 4036 {
… …
3256 4049
3257 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3258} 4051}
3259 4052
3260ev_tstamp 4053ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w) 4054ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4055{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4056 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3264} 4057}
3265 4058
3266#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
3267void noinline 4060noinline
4061void
3268ev_periodic_start (EV_P_ ev_periodic *w) 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3269{ 4063{
3270 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
3271 return; 4065 return;
3272 4066
3273 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
… …
3282 4076
3283 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
3284 4078
3285 ++periodiccnt; 4079 ++periodiccnt;
3286 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3287 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3288 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3289 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
3290 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
3291 4085
3292 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3293 4087
3294 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4088 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3295} 4089}
3296 4090
3297void noinline 4091noinline
4092void
3298ev_periodic_stop (EV_P_ ev_periodic *w) 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3299{ 4094{
3300 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3301 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
3302 return; 4097 return;
3303 4098
… …
3320 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
3321 4116
3322 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
3323} 4118}
3324 4119
3325void noinline 4120noinline
4121void
3326ev_periodic_again (EV_P_ ev_periodic *w) 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3327{ 4123{
3328 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
3329 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
3330 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
3331} 4127}
… …
3335# define SA_RESTART 0 4131# define SA_RESTART 0
3336#endif 4132#endif
3337 4133
3338#if EV_SIGNAL_ENABLE 4134#if EV_SIGNAL_ENABLE
3339 4135
3340void noinline 4136noinline
4137void
3341ev_signal_start (EV_P_ ev_signal *w) 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3342{ 4139{
3343 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3344 return; 4141 return;
3345 4142
3346 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4143 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3348#if EV_MULTIPLICITY 4145#if EV_MULTIPLICITY
3349 assert (("libev: a signal must not be attached to two different loops", 4146 assert (("libev: a signal must not be attached to two different loops",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4147 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3351 4148
3352 signals [w->signum - 1].loop = EV_A; 4149 signals [w->signum - 1].loop = EV_A;
4150 ECB_MEMORY_FENCE_RELEASE;
3353#endif 4151#endif
3354 4152
3355 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
3356 4154
3357#if EV_USE_SIGNALFD 4155#if EV_USE_SIGNALFD
… …
3416 } 4214 }
3417 4215
3418 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3419} 4217}
3420 4218
3421void noinline 4219noinline
4220void
3422ev_signal_stop (EV_P_ ev_signal *w) 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3423{ 4222{
3424 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
3426 return; 4225 return;
3427 4226
… …
3458#endif 4257#endif
3459 4258
3460#if EV_CHILD_ENABLE 4259#if EV_CHILD_ENABLE
3461 4260
3462void 4261void
3463ev_child_start (EV_P_ ev_child *w) 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3464{ 4263{
3465#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
3466 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3467#endif 4266#endif
3468 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
… …
3475 4274
3476 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3477} 4276}
3478 4277
3479void 4278void
3480ev_child_stop (EV_P_ ev_child *w) 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3481{ 4280{
3482 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3484 return; 4283 return;
3485 4284
… …
3502 4301
3503#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
3504#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3505#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
3506 4305
3507static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4306noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3508 4307
3509#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
3510 4309
3511/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4310/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4311# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3513 4312
3514static void noinline 4313noinline
4314static void
3515infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
3516{ 4316{
3517 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); 4317 w->wd = inotify_add_watch (fs_fd, w->path,
4318 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4319 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4320 | IN_DONT_FOLLOW | IN_MASK_ADD);
3518 4321
3519 if (w->wd >= 0) 4322 if (w->wd >= 0)
3520 { 4323 {
3521 struct statfs sfs; 4324 struct statfs sfs;
3522 4325
… …
3526 4329
3527 if (!fs_2625) 4330 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4331 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs) 4332 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */ 4333 && (sfs.f_type == 0x1373 /* devfs */
4334 || sfs.f_type == 0x4006 /* fat */
4335 || sfs.f_type == 0x4d44 /* msdos */
3531 || sfs.f_type == 0xEF53 /* ext2/3 */ 4336 || sfs.f_type == 0xEF53 /* ext2/3 */
4337 || sfs.f_type == 0x72b6 /* jffs2 */
4338 || sfs.f_type == 0x858458f6 /* ramfs */
4339 || sfs.f_type == 0x5346544e /* ntfs */
3532 || sfs.f_type == 0x3153464a /* jfs */ 4340 || sfs.f_type == 0x3153464a /* jfs */
4341 || sfs.f_type == 0x9123683e /* btrfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */ 4342 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */ 4343 || sfs.f_type == 0x01021994 /* tmpfs */
3535 || sfs.f_type == 0x58465342 /* xfs */)) 4344 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4345 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else 4346 else
3538 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4347 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3539 } 4348 }
… …
3574 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3575 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
3576 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3577} 4386}
3578 4387
3579static void noinline 4388noinline
4389static void
3580infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
3581{ 4391{
3582 int slot; 4392 int slot;
3583 int wd = w->wd; 4393 int wd = w->wd;
3584 4394
… …
3591 4401
3592 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
3593 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
3594} 4404}
3595 4405
3596static void noinline 4406noinline
4407static void
3597infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3598{ 4409{
3599 if (slot < 0) 4410 if (slot < 0)
3600 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
3601 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3637 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4448 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3638 ofs += sizeof (struct inotify_event) + ev->len; 4449 ofs += sizeof (struct inotify_event) + ev->len;
3639 } 4450 }
3640} 4451}
3641 4452
3642inline_size void ecb_cold 4453inline_size ecb_cold
4454void
3643ev_check_2625 (EV_P) 4455ev_check_2625 (EV_P)
3644{ 4456{
3645 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
3646 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4458 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3647 */ 4459 */
… …
3652} 4464}
3653 4465
3654inline_size int 4466inline_size int
3655infy_newfd (void) 4467infy_newfd (void)
3656{ 4468{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4469#if defined IN_CLOEXEC && defined IN_NONBLOCK
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4470 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0) 4471 if (fd >= 0)
3660 return fd; 4472 return fd;
3661#endif 4473#endif
3662 return inotify_init (); 4474 return inotify_init ();
… …
3737#else 4549#else
3738# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
3739#endif 4551#endif
3740 4552
3741void 4553void
3742ev_stat_stat (EV_P_ ev_stat *w) 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3743{ 4555{
3744 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
3745 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
3746 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
3747 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
3748} 4560}
3749 4561
3750static void noinline 4562noinline
4563static void
3751stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3752{ 4565{
3753 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3754 4567
3755 ev_statdata prev = w->attr; 4568 ev_statdata prev = w->attr;
… …
3786 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
3787 } 4600 }
3788} 4601}
3789 4602
3790void 4603void
3791ev_stat_start (EV_P_ ev_stat *w) 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3792{ 4605{
3793 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3794 return; 4607 return;
3795 4608
3796 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
3817 4630
3818 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
3819} 4632}
3820 4633
3821void 4634void
3822ev_stat_stop (EV_P_ ev_stat *w) 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3823{ 4636{
3824 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
3826 return; 4639 return;
3827 4640
… …
3843} 4656}
3844#endif 4657#endif
3845 4658
3846#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
3847void 4660void
3848ev_idle_start (EV_P_ ev_idle *w) 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3849{ 4662{
3850 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
3851 return; 4664 return;
3852 4665
3853 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
3858 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
3859 4672
3860 ++idleall; 4673 ++idleall;
3861 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
3862 4675
3863 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4676 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3864 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
3865 } 4678 }
3866 4679
3867 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
3868} 4681}
3869 4682
3870void 4683void
3871ev_idle_stop (EV_P_ ev_idle *w) 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3872{ 4685{
3873 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
3874 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
3875 return; 4688 return;
3876 4689
… …
3890} 4703}
3891#endif 4704#endif
3892 4705
3893#if EV_PREPARE_ENABLE 4706#if EV_PREPARE_ENABLE
3894void 4707void
3895ev_prepare_start (EV_P_ ev_prepare *w) 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3896{ 4709{
3897 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
3898 return; 4711 return;
3899 4712
3900 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3901 4714
3902 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
3903 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3904 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
3905 4718
3906 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3907} 4720}
3908 4721
3909void 4722void
3910ev_prepare_stop (EV_P_ ev_prepare *w) 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3911{ 4724{
3912 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
3913 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
3914 return; 4727 return;
3915 4728
… …
3928} 4741}
3929#endif 4742#endif
3930 4743
3931#if EV_CHECK_ENABLE 4744#if EV_CHECK_ENABLE
3932void 4745void
3933ev_check_start (EV_P_ ev_check *w) 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3934{ 4747{
3935 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
3936 return; 4749 return;
3937 4750
3938 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
3939 4752
3940 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
3941 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3942 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
3943 4756
3944 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3945} 4758}
3946 4759
3947void 4760void
3948ev_check_stop (EV_P_ ev_check *w) 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3949{ 4762{
3950 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
3952 return; 4765 return;
3953 4766
… …
3965 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
3966} 4779}
3967#endif 4780#endif
3968 4781
3969#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
3970void noinline 4783noinline
4784void
3971ev_embed_sweep (EV_P_ ev_embed *w) 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3972{ 4786{
3973 ev_run (w->other, EVRUN_NOWAIT); 4787 ev_run (w->other, EVRUN_NOWAIT);
3974} 4788}
3975 4789
3976static void 4790static void
… …
4024 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
4025} 4839}
4026#endif 4840#endif
4027 4841
4028void 4842void
4029ev_embed_start (EV_P_ ev_embed *w) 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4030{ 4844{
4031 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
4032 return; 4846 return;
4033 4847
4034 { 4848 {
… …
4055 4869
4056 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
4057} 4871}
4058 4872
4059void 4873void
4060ev_embed_stop (EV_P_ ev_embed *w) 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 4875{
4062 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
4063 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
4064 return; 4878 return;
4065 4879
… …
4075} 4889}
4076#endif 4890#endif
4077 4891
4078#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
4079void 4893void
4080ev_fork_start (EV_P_ ev_fork *w) 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4081{ 4895{
4082 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
4083 return; 4897 return;
4084 4898
4085 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
4086 4900
4087 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
4088 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4089 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
4090 4904
4091 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
4092} 4906}
4093 4907
4094void 4908void
4095ev_fork_stop (EV_P_ ev_fork *w) 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4096{ 4910{
4097 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
4098 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
4099 return; 4913 return;
4100 4914
… …
4113} 4927}
4114#endif 4928#endif
4115 4929
4116#if EV_CLEANUP_ENABLE 4930#if EV_CLEANUP_ENABLE
4117void 4931void
4118ev_cleanup_start (EV_P_ ev_cleanup *w) 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4119{ 4933{
4120 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
4121 return; 4935 return;
4122 4936
4123 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
4124 4938
4125 ev_start (EV_A_ (W)w, ++cleanupcnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
4126 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4127 cleanups [cleanupcnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
4128 4942
4129 /* cleanup watchers should never keep a refcount on the loop */ 4943 /* cleanup watchers should never keep a refcount on the loop */
4130 ev_unref (EV_A); 4944 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
4132} 4946}
4133 4947
4134void 4948void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w) 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4136{ 4950{
4137 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
4139 return; 4953 return;
4140 4954
… …
4154} 4968}
4155#endif 4969#endif
4156 4970
4157#if EV_ASYNC_ENABLE 4971#if EV_ASYNC_ENABLE
4158void 4972void
4159ev_async_start (EV_P_ ev_async *w) 4973ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4160{ 4974{
4161 if (expect_false (ev_is_active (w))) 4975 if (expect_false (ev_is_active (w)))
4162 return; 4976 return;
4163 4977
4164 w->sent = 0; 4978 w->sent = 0;
… …
4166 evpipe_init (EV_A); 4980 evpipe_init (EV_A);
4167 4981
4168 EV_FREQUENT_CHECK; 4982 EV_FREQUENT_CHECK;
4169 4983
4170 ev_start (EV_A_ (W)w, ++asynccnt); 4984 ev_start (EV_A_ (W)w, ++asynccnt);
4171 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4172 asyncs [asynccnt - 1] = w; 4986 asyncs [asynccnt - 1] = w;
4173 4987
4174 EV_FREQUENT_CHECK; 4988 EV_FREQUENT_CHECK;
4175} 4989}
4176 4990
4177void 4991void
4178ev_async_stop (EV_P_ ev_async *w) 4992ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4179{ 4993{
4180 clear_pending (EV_A_ (W)w); 4994 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 4995 if (expect_false (!ev_is_active (w)))
4182 return; 4996 return;
4183 4997
… …
4194 5008
4195 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
4196} 5010}
4197 5011
4198void 5012void
4199ev_async_send (EV_P_ ev_async *w) 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4200{ 5014{
4201 w->sent = 1; 5015 w->sent = 1;
4202 evpipe_write (EV_A_ &async_pending); 5016 evpipe_write (EV_A_ &async_pending);
4203} 5017}
4204#endif 5018#endif
… …
4241 5055
4242 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4243} 5057}
4244 5058
4245void 5059void
4246ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4247{ 5061{
4248 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4249
4250 if (expect_false (!once))
4251 {
4252 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4253 return;
4254 }
4255 5063
4256 once->cb = cb; 5064 once->cb = cb;
4257 once->arg = arg; 5065 once->arg = arg;
4258 5066
4259 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
4272} 5080}
4273 5081
4274/*****************************************************************************/ 5082/*****************************************************************************/
4275 5083
4276#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
4277void ecb_cold 5085ecb_cold
5086void
4278ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5087ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4279{ 5088{
4280 int i, j; 5089 int i, j;
4281 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
4282 5091
4283 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))
… …
4389 5198
4390#if EV_MULTIPLICITY 5199#if EV_MULTIPLICITY
4391 #include "ev_wrap.h" 5200 #include "ev_wrap.h"
4392#endif 5201#endif
4393 5202
4394EV_CPP(})
4395

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