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Comparing libev/ev.c (file contents):
Revision 1.411 by root, Tue Feb 21 04:34:02 2012 UTC vs.
Revision 1.499 by root, Wed Jun 26 07:50:27 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
201# include <sys/wait.h> 220# include <sys/wait.h>
202# include <unistd.h> 221# include <unistd.h>
203#else 222#else
204# include <io.h> 223# include <io.h>
205# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
206# include <windows.h> 226# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
209# endif 229# endif
210# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
211#endif 231#endif
212 232
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
221/* 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 */
222 234
223/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 236#if defined EV_NSIG
225/* use what's provided */ 237/* use what's provided */
226#elif defined (NSIG) 238#elif defined NSIG
227# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 240#elif defined _NSIG
229# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 242#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 244#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 248#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 250#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 254#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 256#else
245# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 258#endif
250 259
251#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
253#endif 262#endif
254 263
255#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 267# else
259# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
260# endif 269# endif
261#endif 270#endif
262 271
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
263#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 284# else
267# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
268# endif 286# endif
269#endif 287#endif
… …
306 324
307#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 326# define EV_USE_PORT 0
309#endif 327#endif
310 328
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
311#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 340# else
315# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
356 382
357#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 385#endif
360 386
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
361/* 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, */
362/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 406# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
369# else 411# else
… …
372# endif 414# endif
373#endif 415#endif
374 416
375/* 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 */
376 418
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
386#endif 422#endif
387 423
… …
395# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
396#endif 432#endif
397 433
398#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
399/* 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 */
400# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
401# 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
402# endif 446# endif
403#endif 447#endif
404 448
405#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
406# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
408/* 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 */
409# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
412# endif 456# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 457#endif
418 458
419#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
420/* 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 */
421# include <stdint.h> 461# include <stdint.h>
… …
478/* 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 */
479/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
480/* 520/*
481 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
482 * 522 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 525 * All rights reserved.
486 * 526 *
487 * 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-
488 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
502 * 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;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * 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
506 * 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.
507 */ 558 */
508 559
509#ifndef ECB_H 560#ifndef ECB_H
510#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
511 565
512#ifdef _WIN32 566#ifdef _WIN32
513 typedef signed char int8_t; 567 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
525 #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
526#else 589#else
527 #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
528#endif 608#endif
529 609
530/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 613 * or so.
534 * 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
535 * 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.
536 */ 616 */
537#ifndef ECB_GCC_VERSION
538 #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__
539 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
540 #else 619#else
541 #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)))
542 #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
543#endif 662#endif
544 663
545/*****************************************************************************/ 664/*****************************************************************************/
546 665
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* 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 */
549 668
550#if ECB_NO_THREADS 669#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 670 #define ECB_NO_SMP 1
552#endif 671#endif
553 672
554#if ECB_NO_THREADS || ECB_NO_SMP 673#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 675#endif
557 676
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
558#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 689 #if __i386 || __i386__
561 #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")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 693 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #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")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #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 */
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 719 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 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")
582 #endif 738 #endif
583 #endif 739 #endif
584#endif 740#endif
585 741
586#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
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
588 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
590 /*#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()
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #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 */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32) 770 #elif defined _WIN32
597 #include <WinNT.h> 771 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h> 774 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier () 775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
604 #endif 792 #endif
605#endif 793#endif
606 794
607#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #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)
622 #endif 810 #endif
623#endif 811#endif
624 812
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif 815#endif
628 816
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif 819#endif
632 820
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
633/*****************************************************************************/ 825/*****************************************************************************/
634 826
635#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
636
637#if __cplusplus
638 #define ecb_inline static inline 828 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
641#elif ECB_C99 831#elif ECB_C99
642 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
656 846
657#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
660#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))
661 852
662#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
663 854
664#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
665 #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)
666 #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)
667 #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)
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else 879#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
674#endif 881#endif
675 882
676/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
677#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; };
678 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
679#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
680 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
681#endif 890#endif
682 891
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
683#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
685#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
687#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
688 927
689#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
704/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
707 946
708/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
709#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))
710 /* 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 */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */ 958 /* no popcountll */
717#else 959#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
719 ecb_function_ int 961 ecb_function_ ecb_const int
720 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
721 { 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
722 int r = 0; 969 int r = 0;
723 970
724 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
725 972
726#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
736 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
738#endif 985#endif
739 986
740 return r; 987 return r;
988#endif
741 } 989 }
742 990
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
744 ecb_function_ int 992 ecb_function_ ecb_const int
745 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
746 { 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
747 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
749 } 1003 }
750 1004
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
752 ecb_function_ int 1006 ecb_function_ ecb_const int
753 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
754 { 1008 {
755 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101; 1012 x *= 0x01010101;
759 1013
760 return x >> 24; 1014 return x >> 24;
761 } 1015 }
762 1016
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
764 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
765 { 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
766 int r = 0; 1025 int r = 0;
767 1026
768 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
773 1032
774 return r; 1033 return r;
1034#endif
775 } 1035 }
776 1036
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
778 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
779 { 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
780 int r = 0; 1045 int r = 0;
781 1046
782 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
783 1048
784 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
785 } 1051 }
786#endif 1052#endif
787 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
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
790{ 1061{
791 return ( (x * 0x0802U & 0x22110U) 1062 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793} 1064}
794 1065
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
797{ 1068{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8); 1072 x = ( x >> 8 ) | ( x << 8);
802 1073
803 return x; 1074 return x;
804} 1075}
805 1076
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
808{ 1079{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
815 return x; 1086 return x;
816} 1087}
817 1088
818/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */ 1090/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
821ecb_function_ int 1092ecb_function_ ecb_const int
822ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
823{ 1094{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825} 1096}
826 1097
827ecb_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);
828ecb_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);
829ecb_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);
830ecb_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);
831ecb_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);
832ecb_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);
833ecb_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);
834ecb_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);
835 1106
836ecb_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); }
837ecb_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); }
838ecb_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); }
839ecb_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); }
840ecb_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); }
841ecb_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); }
842ecb_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); }
843ecb_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); }
844 1115
845#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
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
847 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #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)))
849#else 1129#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
851 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
852 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
853 { 1133 {
854 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
855 } 1135 }
856 1136
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
858 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
859 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
860 { 1140 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 } 1142 }
863 1143
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
865 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
866 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
867 { 1147 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 } 1149 }
870#endif 1150#endif
871 1151
872#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
873 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
874#else 1154#else
875 /* 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 :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
877 ecb_inline void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
878#endif 1158#endif
879 1159
880/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
882 1162
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
884ecb_inline unsigned char 1164ecb_inline ecb_const uint32_t
885ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
886{ 1166{
887 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
888 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
889} 1189}
890 1190
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
892ecb_inline 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; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
894ecb_inline 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; }
895 1195
896#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #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))
898#else 1198#else
899 #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)))
900#endif 1200#endif
901 1201
902#if __cplusplus 1202#if ECB_CPP
903 template<typename T> 1203 template<typename T>
904 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
905 { 1205 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 } 1207 }
… …
924 } 1224 }
925#else 1225#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif 1227#endif
928 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
929#endif 1534#endif
930 1535
931/* ECB.H END */ 1536/* ECB.H END */
932 1537
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
954#define inline_size ecb_inline 1559#define inline_size ecb_inline
955 1560
956#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
957# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
958#else 1563#else
959# define inline_speed static noinline 1564# define inline_speed noinline static
960#endif 1565#endif
961 1566
962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
963 1568
964#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
965# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
966#else 1571#else
967# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
968#endif 1573#endif
969 1574
970#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
971#define EMPTY2(a,b) /* used to suppress some warnings */
972 1576
973typedef ev_watcher *W; 1577typedef ev_watcher *W;
974typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
975typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
976 1580
… …
1001# include "ev_win32.c" 1605# include "ev_win32.c"
1002#endif 1606#endif
1003 1607
1004/*****************************************************************************/ 1608/*****************************************************************************/
1005 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1006/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
1007 1615
1008#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
1009# include <math.h> 1617# include <math.h>
1010# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
1011#else 1619#else
1012 1620
1013#include <float.h> 1621#include <float.h>
1014 1622
1015/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1016static ev_tstamp noinline 1625static ev_tstamp
1017ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
1018{ 1627{
1019 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1053 1662
1054#ifdef __linux 1663#ifdef __linux
1055# include <sys/utsname.h> 1664# include <sys/utsname.h>
1056#endif 1665#endif
1057 1666
1058static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
1059ev_linux_version (void) 1669ev_linux_version (void)
1060{ 1670{
1061#ifdef __linux 1671#ifdef __linux
1062 unsigned int v = 0; 1672 unsigned int v = 0;
1063 struct utsname buf; 1673 struct utsname buf;
… …
1092} 1702}
1093 1703
1094/*****************************************************************************/ 1704/*****************************************************************************/
1095 1705
1096#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1097static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1098ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1099{ 1710{
1100 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1101} 1712}
1102#endif 1713#endif
1103 1714
1104static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1105 1716
1106void ecb_cold 1717ecb_cold
1718void
1107ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1108{ 1720{
1109 syserr_cb = cb; 1721 syserr_cb = cb;
1110} 1722}
1111 1723
1112static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1113ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1114{ 1727{
1115 if (!msg) 1728 if (!msg)
1116 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1117 1730
… …
1130 abort (); 1743 abort ();
1131 } 1744 }
1132} 1745}
1133 1746
1134static void * 1747static void *
1135ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1136{ 1749{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
1140 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1141 * 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
1142 * 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.
1143 */ 1755 */
1144 1756
1145 if (size) 1757 if (size)
1146 return realloc (ptr, size); 1758 return realloc (ptr, size);
1147 1759
1148 free (ptr); 1760 free (ptr);
1149 return 0; 1761 return 0;
1150#endif
1151} 1762}
1152 1763
1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1154 1765
1155void ecb_cold 1766ecb_cold
1767void
1156ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1157{ 1769{
1158 alloc = cb; 1770 alloc = cb;
1159} 1771}
1160 1772
1161inline_speed void * 1773inline_speed void *
… …
1188typedef struct 1800typedef struct
1189{ 1801{
1190 WL head; 1802 WL head;
1191 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1192 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) */
1193 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 */
1194 unsigned char unused; 1806 unsigned char unused;
1195#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1196 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1197#endif 1809#endif
1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1278 1890
1279/*****************************************************************************/ 1891/*****************************************************************************/
1280 1892
1281#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1282ev_tstamp 1894ev_tstamp
1283ev_time (void) 1895ev_time (void) EV_NOEXCEPT
1284{ 1896{
1285#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1286 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1287 { 1899 {
1288 struct timespec ts; 1900 struct timespec ts;
… …
1312 return ev_time (); 1924 return ev_time ();
1313} 1925}
1314 1926
1315#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1316ev_tstamp 1928ev_tstamp
1317ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
1318{ 1930{
1319 return ev_rt_now; 1931 return ev_rt_now;
1320} 1932}
1321#endif 1933#endif
1322 1934
1323void 1935void
1324ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1325{ 1937{
1326 if (delay > 0.) 1938 if (delay > 0.)
1327 { 1939 {
1328#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1329 struct timespec ts; 1941 struct timespec ts;
1330 1942
1331 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1332 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1333#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) */
1334 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1335#else 1949#else
1336 struct timeval tv; 1950 struct timeval tv;
1337 1951
1338 /* 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 */
… …
1369 } 1983 }
1370 1984
1371 return ncur; 1985 return ncur;
1372} 1986}
1373 1987
1374static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1375array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1376{ 1991{
1377 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1378 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1379} 1994}
1380 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1381#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1382 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1383 2000
1384#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1385 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1386 { \ 2003 { \
1387 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1388 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1389 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1390 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1391 } 2008 }
1392 2009
1393#if 0 2010#if 0
1394#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1395 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1404 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
1405 2022
1406/*****************************************************************************/ 2023/*****************************************************************************/
1407 2024
1408/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1409static void noinline 2026noinline
2027static void
1410pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1411{ 2029{
1412} 2030}
1413 2031
1414void noinline 2032noinline
2033void
1415ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1416{ 2035{
1417 W w_ = (W)w; 2036 W w_ = (W)w;
1418 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1419 2038
1420 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1421 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1422 else 2041 else
1423 { 2042 {
1424 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1425 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1426 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1427 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1428 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
1429} 2050}
1430 2051
1431inline_speed void 2052inline_speed void
1432feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1433{ 2054{
1434 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1435 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1436} 2057}
1437 2058
1438inline_size void 2059inline_size void
1439feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1479 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1480 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1481} 2102}
1482 2103
1483void 2104void
1484ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1485{ 2106{
1486 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1487 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1488} 2109}
1489 2110
… …
1526 ev_io *w; 2147 ev_io *w;
1527 2148
1528 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1530 2151
1531 anfd->reify = 0; 2152 anfd->reify = 0;
1532 2153
1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1534 { 2155 {
1535 anfd->events = 0; 2156 anfd->events = 0;
1536 2157
… …
1547 2168
1548 fdchangecnt = 0; 2169 fdchangecnt = 0;
1549} 2170}
1550 2171
1551/* something about the given fd changed */ 2172/* something about the given fd changed */
1552inline_size void 2173inline_size
2174void
1553fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1554{ 2176{
1555 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1556 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1557 2179
1558 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1559 { 2181 {
1560 ++fdchangecnt; 2182 ++fdchangecnt;
1561 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1562 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1563 } 2185 }
1564} 2186}
1565 2187
1566/* 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 */
1567inline_speed void ecb_cold 2189inline_speed ecb_cold void
1568fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1569{ 2191{
1570 ev_io *w; 2192 ev_io *w;
1571 2193
1572 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1575 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);
1576 } 2198 }
1577} 2199}
1578 2200
1579/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1580inline_size int ecb_cold 2202inline_size ecb_cold int
1581fd_valid (int fd) 2203fd_valid (int fd)
1582{ 2204{
1583#ifdef _WIN32 2205#ifdef _WIN32
1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1585#else 2207#else
1586 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1587#endif 2209#endif
1588} 2210}
1589 2211
1590/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1591static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1592fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1593{ 2216{
1594 int fd; 2217 int fd;
1595 2218
1596 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1598 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1599 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1600} 2223}
1601 2224
1602/* 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 */
1603static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1604fd_enomem (EV_P) 2228fd_enomem (EV_P)
1605{ 2229{
1606 int fd; 2230 int fd;
1607 2231
1608 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1612 break; 2236 break;
1613 } 2237 }
1614} 2238}
1615 2239
1616/* 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 */
1617static void noinline 2241noinline
2242static void
1618fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1619{ 2244{
1620 int fd; 2245 int fd;
1621 2246
1622 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1803 2428
1804/*****************************************************************************/ 2429/*****************************************************************************/
1805 2430
1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1807 2432
1808static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1809evpipe_init (EV_P) 2435evpipe_init (EV_P)
1810{ 2436{
1811 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1812 { 2438 {
2439 int fds [2];
2440
1813# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1816 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1817 2446
1818 if (evfd >= 0) 2447 if (fds [1] < 0)
2448# endif
1819 { 2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
1820 evpipe [0] = -1; 2456 evpipe [0] = fds [0];
1821 fd_intern (evfd); /* doing it twice doesn't hurt */ 2457
1822 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));
1823 } 2508 }
1824 else 2509 else
1825# endif 2510#endif
1826 { 2511 {
1827 while (pipe (evpipe)) 2512#ifdef _WIN32
1828 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1829 2514 DWORD sent;
1830 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1831 fd_intern (evpipe [1]); 2516 buf.len = 1;
1832 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1833 } 2518#else
1834
1835 ev_io_start (EV_A_ &pipe_w);
1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1837 }
1838}
1839
1840inline_speed void
1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1842{
1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1860 old_errno = errno; /* save errno because write will clobber it */
1861
1862#if EV_USE_EVENTFD
1863 if (evfd >= 0)
1864 {
1865 uint64_t counter = 1;
1866 write (evfd, &counter, sizeof (uint64_t));
1867 }
1868 else
1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1876 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1877 /* check the ev documentation on how to use this flag */
1878 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1879 } 2521 }
1880 2522
1881 errno = old_errno; 2523 errno = old_errno;
1882 } 2524 }
1883} 2525}
… …
1890 int i; 2532 int i;
1891 2533
1892 if (revents & EV_READ) 2534 if (revents & EV_READ)
1893 { 2535 {
1894#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1895 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1896 { 2538 {
1897 uint64_t counter; 2539 uint64_t counter;
1898 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1899 } 2541 }
1900 else 2542 else
1901#endif 2543#endif
1902 { 2544 {
1903 char dummy; 2545 char dummy[4];
1904 /* 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
1905 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
1906 } 2556 }
1907 } 2557 }
1908 2558
1909 pipe_write_skipped = 0; 2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1910 2562
1911#if EV_SIGNAL_ENABLE 2563#if EV_SIGNAL_ENABLE
1912 if (sig_pending) 2564 if (sig_pending)
1913 { 2565 {
1914 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1915 2569
1916 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1917 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1918 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1919 } 2573 }
… …
1921 2575
1922#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1923 if (async_pending) 2577 if (async_pending)
1924 { 2578 {
1925 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1926 2582
1927 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1928 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1929 { 2585 {
1930 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1931 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1932 } 2589 }
1933 } 2590 }
1934#endif 2591#endif
1935} 2592}
1936 2593
1937/*****************************************************************************/ 2594/*****************************************************************************/
1938 2595
1939void 2596void
1940ev_feed_signal (int signum) 2597ev_feed_signal (int signum) EV_NOEXCEPT
1941{ 2598{
1942#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
1943 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
1944 2603
1945 if (!EV_A) 2604 if (!EV_A)
1946 return; 2605 return;
1947#endif 2606#endif
1948 2607
1949 if (!ev_active (&pipe_w))
1950 return;
1951
1952 signals [signum - 1].pending = 1; 2608 signals [signum - 1].pending = 1;
1953 evpipe_write (EV_A_ &sig_pending); 2609 evpipe_write (EV_A_ &sig_pending);
1954} 2610}
1955 2611
1956static void 2612static void
… …
1961#endif 2617#endif
1962 2618
1963 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
1964} 2620}
1965 2621
1966void noinline 2622noinline
2623void
1967ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1968{ 2625{
1969 WL w; 2626 WL w;
1970 2627
1971 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1972 return; 2629 return;
1973 2630
1974 --signum; 2631 --signum;
1975 2632
1976#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1980 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1981 return; 2638 return;
1982#endif 2639#endif
1983 2640
1984 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1985 2643
1986 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1988} 2646}
1989 2647
… …
2080# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
2081#endif 2739#endif
2082#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2083# include "ev_epoll.c" 2741# include "ev_epoll.c"
2084#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2085#if EV_USE_POLL 2746#if EV_USE_POLL
2086# include "ev_poll.c" 2747# include "ev_poll.c"
2087#endif 2748#endif
2088#if EV_USE_SELECT 2749#if EV_USE_SELECT
2089# include "ev_select.c" 2750# include "ev_select.c"
2090#endif 2751#endif
2091 2752
2092int ecb_cold 2753ecb_cold int
2093ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
2094{ 2755{
2095 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2096} 2757}
2097 2758
2098int ecb_cold 2759ecb_cold int
2099ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
2100{ 2761{
2101 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2102} 2763}
2103 2764
2104/* 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 */
2105int inline_size ecb_cold 2766inline_size ecb_cold int
2106enable_secure (void) 2767enable_secure (void)
2107{ 2768{
2108#ifdef _WIN32 2769#ifdef _WIN32
2109 return 0; 2770 return 0;
2110#else 2771#else
2111 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2112 || getgid () != getegid (); 2773 || getgid () != getegid ();
2113#endif 2774#endif
2114} 2775}
2115 2776
2116unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2117ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
2118{ 2780{
2119 unsigned int flags = 0; 2781 unsigned int flags = 0;
2120 2782
2121 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2122 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2123 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2124 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2125 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2126 2789
2127 return flags; 2790 return flags;
2128} 2791}
2129 2792
2130unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2131ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
2132{ 2796{
2133 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2134 2798
2135#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2136 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2144#endif 2808#endif
2145#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2146 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) */
2147#endif 2811#endif
2148 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2149 return flags; 2818 return flags;
2150} 2819}
2151 2820
2152unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2153ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
2154{ 2824{
2155 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2156 2826
2157 /* 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 */
2158 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 */
… …
2160 2830
2161 return flags; 2831 return flags;
2162} 2832}
2163 2833
2164unsigned int 2834unsigned int
2165ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
2166{ 2836{
2167 return backend; 2837 return backend;
2168} 2838}
2169 2839
2170#if EV_FEATURE_API 2840#if EV_FEATURE_API
2171unsigned int 2841unsigned int
2172ev_iteration (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
2173{ 2843{
2174 return loop_count; 2844 return loop_count;
2175} 2845}
2176 2846
2177unsigned int 2847unsigned int
2178ev_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
2179{ 2849{
2180 return loop_depth; 2850 return loop_depth;
2181} 2851}
2182 2852
2183void 2853void
2184ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2185{ 2855{
2186 io_blocktime = interval; 2856 io_blocktime = interval;
2187} 2857}
2188 2858
2189void 2859void
2190ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2191{ 2861{
2192 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2193} 2863}
2194 2864
2195void 2865void
2196ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2197{ 2867{
2198 userdata = data; 2868 userdata = data;
2199} 2869}
2200 2870
2201void * 2871void *
2202ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
2203{ 2873{
2204 return userdata; 2874 return userdata;
2205} 2875}
2206 2876
2207void 2877void
2208ev_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
2209{ 2879{
2210 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2211} 2881}
2212 2882
2213void 2883void
2214ev_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
2215{ 2885{
2216 release_cb = release; 2886 release_cb = release;
2217 acquire_cb = acquire; 2887 acquire_cb = acquire;
2218} 2888}
2219#endif 2889#endif
2220 2890
2221/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2222static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2223loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2224{ 2895{
2225 if (!backend) 2896 if (!backend)
2226 { 2897 {
2227 origflags = flags; 2898 origflags = flags;
2228 2899
… …
2273#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
2274 async_pending = 0; 2945 async_pending = 0;
2275#endif 2946#endif
2276 pipe_write_skipped = 0; 2947 pipe_write_skipped = 0;
2277 pipe_write_wanted = 0; 2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2278#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
2279 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2280#endif 2953#endif
2281#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
2282 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2284 2957
2285 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2286 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2287 2960
2288#if EV_USE_IOCP 2961#if EV_USE_IOCP
2289 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2290#endif 2963#endif
2291#if EV_USE_PORT 2964#if EV_USE_PORT
2292 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2293#endif 2966#endif
2294#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2295 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);
2296#endif 2972#endif
2297#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2298 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2299#endif 2975#endif
2300#if EV_USE_POLL 2976#if EV_USE_POLL
2301 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2302#endif 2978#endif
2303#if EV_USE_SELECT 2979#if EV_USE_SELECT
2304 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2305#endif 2981#endif
2306 2982
2307 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2308 2984
2309#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2312#endif 2988#endif
2313 } 2989 }
2314} 2990}
2315 2991
2316/* free up a loop structure */ 2992/* free up a loop structure */
2317void ecb_cold 2993ecb_cold
2994void
2318ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2319{ 2996{
2320 int i; 2997 int i;
2321 2998
2322#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2333 EV_INVOKE_PENDING; 3010 EV_INVOKE_PENDING;
2334 } 3011 }
2335#endif 3012#endif
2336 3013
2337#if EV_CHILD_ENABLE 3014#if EV_CHILD_ENABLE
2338 if (ev_is_active (&childev)) 3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2339 { 3016 {
2340 ev_ref (EV_A); /* child watcher */ 3017 ev_ref (EV_A); /* child watcher */
2341 ev_signal_stop (EV_A_ &childev); 3018 ev_signal_stop (EV_A_ &childev);
2342 } 3019 }
2343#endif 3020#endif
… …
2345 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
2346 { 3023 {
2347 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
2348 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
2349 3026
2350#if EV_USE_EVENTFD
2351 if (evfd >= 0)
2352 close (evfd);
2353#endif
2354
2355 if (evpipe [0] >= 0)
2356 {
2357 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2358 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2359 }
2360 } 3029 }
2361 3030
2362#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
2363 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
2364 close (sigfd); 3033 close (sigfd);
… …
2371 3040
2372 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2373 close (backend_fd); 3042 close (backend_fd);
2374 3043
2375#if EV_USE_IOCP 3044#if EV_USE_IOCP
2376 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2377#endif 3046#endif
2378#if EV_USE_PORT 3047#if EV_USE_PORT
2379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2380#endif 3049#endif
2381#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2382 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);
2383#endif 3055#endif
2384#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2385 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2386#endif 3058#endif
2387#if EV_USE_POLL 3059#if EV_USE_POLL
2388 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2389#endif 3061#endif
2390#if EV_USE_SELECT 3062#if EV_USE_SELECT
2391 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2392#endif 3064#endif
2393 3065
2394 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2395 { 3067 {
2396 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2438 3110
2439inline_size void 3111inline_size void
2440loop_fork (EV_P) 3112loop_fork (EV_P)
2441{ 3113{
2442#if EV_USE_PORT 3114#if EV_USE_PORT
2443 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2444#endif 3116#endif
2445#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2446 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);
2447#endif 3122#endif
2448#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2449 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2450#endif 3125#endif
2451#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2452 infy_fork (EV_A); 3127 infy_fork (EV_A);
2453#endif 3128#endif
2454 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2455 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2456 { 3132 {
2457 /* 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 */
2458 3134
2459 ev_ref (EV_A); 3135 ev_ref (EV_A);
2460 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
2461 3137
2462#if EV_USE_EVENTFD
2463 if (evfd >= 0)
2464 close (evfd);
2465#endif
2466
2467 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
2468 {
2469 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
2470 EV_WIN32_CLOSE_FD (evpipe [1]);
2471 }
2472 3140
2473#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2474 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
2475 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
2476 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2477#endif
2478 } 3144 }
3145#endif
2479 3146
2480 postfork = 0; 3147 postfork = 0;
2481} 3148}
2482 3149
2483#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2484 3151
3152ecb_cold
2485struct ev_loop * ecb_cold 3153struct ev_loop *
2486ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2487{ 3155{
2488 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2489 3157
2490 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2491 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2498} 3166}
2499 3167
2500#endif /* multiplicity */ 3168#endif /* multiplicity */
2501 3169
2502#if EV_VERIFY 3170#if EV_VERIFY
2503static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2504verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2505{ 3174{
2506 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));
2507 3176
2508 if (w->pending) 3177 if (w->pending)
2509 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));
2510} 3179}
2511 3180
2512static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2513verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2514{ 3184{
2515 int i; 3185 int i;
2516 3186
2517 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2522 3192
2523 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2524 } 3194 }
2525} 3195}
2526 3196
2527static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2528array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2529{ 3200{
2530 while (cnt--) 3201 while (cnt--)
2531 { 3202 {
2532 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2535} 3206}
2536#endif 3207#endif
2537 3208
2538#if EV_FEATURE_API 3209#if EV_FEATURE_API
2539void ecb_cold 3210void ecb_cold
2540ev_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
2541{ 3212{
2542#if EV_VERIFY 3213#if EV_VERIFY
2543 int i; 3214 int i;
2544 WL w; 3215 WL w, w2;
2545 3216
2546 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
2547 3218
2548 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
2549 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
2550 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2551 3222
2552 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
2553 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
2554 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
2555 { 3229 {
2556 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
2557 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));
2558 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));
2559 } 3240 }
3241 }
2560 3242
2561 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
2562 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
2563 3245
2564#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
2610#endif 3292#endif
2611} 3293}
2612#endif 3294#endif
2613 3295
2614#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2615struct ev_loop * ecb_cold 3298struct ev_loop *
2616#else 3299#else
2617int 3300int
2618#endif 3301#endif
2619ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2620{ 3303{
2621 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2622 { 3305 {
2623#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2624 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2643 3326
2644 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2645} 3328}
2646 3329
2647void 3330void
2648ev_loop_fork (EV_P) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2649{ 3332{
2650 postfork = 1; /* must be in line with ev_default_fork */ 3333 postfork = 1;
2651} 3334}
2652 3335
2653/*****************************************************************************/ 3336/*****************************************************************************/
2654 3337
2655void 3338void
… …
2657{ 3340{
2658 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2659} 3342}
2660 3343
2661unsigned int 3344unsigned int
2662ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
2663{ 3346{
2664 int pri; 3347 int pri;
2665 unsigned int count = 0; 3348 unsigned int count = 0;
2666 3349
2667 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2668 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2669 3352
2670 return count; 3353 return count;
2671} 3354}
2672 3355
2673void noinline 3356noinline
3357void
2674ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2675{ 3359{
2676 int pri; 3360 pendingpri = NUMPRI;
2677 3361
2678 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2679 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
2680 { 3368 {
2681 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2682 3370
2683 p->w->pending = 0; 3371 p->w->pending = 0;
2684 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2685 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2686 } 3374 }
3375 }
3376 while (pendingpri);
2687} 3377}
2688 3378
2689#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2690/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2691/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2749 } 3439 }
2750} 3440}
2751 3441
2752#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2753 3443
2754static void noinline 3444noinline
3445static void
2755periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2756{ 3447{
2757 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2758 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);
2759 3450
… …
2781{ 3472{
2782 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2783 3474
2784 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2785 { 3476 {
2786 int feed_count = 0;
2787
2788 do 3477 do
2789 { 3478 {
2790 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2791 3480
2792 /*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)));*/
… …
2819 } 3508 }
2820} 3509}
2821 3510
2822/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2823/* 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? */
2824static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2825periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2826{ 3516{
2827 int i; 3517 int i;
2828 3518
2829 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2842 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2843} 3533}
2844#endif 3534#endif
2845 3535
2846/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2847static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2848timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2849{ 3540{
2850 int i; 3541 int i;
2851 3542
2852 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2926 3617
2927 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2928 } 3619 }
2929} 3620}
2930 3621
2931void 3622int
2932ev_run (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2933{ 3624{
2934#if EV_FEATURE_API 3625#if EV_FEATURE_API
2935 ++loop_depth; 3626 ++loop_depth;
2936#endif 3627#endif
… …
3051 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
3052 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3053 3744
3054 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3055 3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3056 if (pipe_write_skipped) 3748 if (pipe_write_skipped)
3057 { 3749 {
3058 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)));
3059 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3060 } 3752 }
3061 3753
3062
3063 /* update ev_rt_now, do magic */ 3754 /* update ev_rt_now, do magic */
3064 time_update (EV_A_ waittime + sleeptime); 3755 time_update (EV_A_ waittime + sleeptime);
3065 } 3756 }
3066 3757
3067 /* queue pending timers and reschedule them */ 3758 /* queue pending timers and reschedule them */
… …
3093 loop_done = EVBREAK_CANCEL; 3784 loop_done = EVBREAK_CANCEL;
3094 3785
3095#if EV_FEATURE_API 3786#if EV_FEATURE_API
3096 --loop_depth; 3787 --loop_depth;
3097#endif 3788#endif
3098}
3099 3789
3790 return activecnt;
3791}
3792
3100void 3793void
3101ev_break (EV_P_ int how) 3794ev_break (EV_P_ int how) EV_NOEXCEPT
3102{ 3795{
3103 loop_done = how; 3796 loop_done = how;
3104} 3797}
3105 3798
3106void 3799void
3107ev_ref (EV_P) 3800ev_ref (EV_P) EV_NOEXCEPT
3108{ 3801{
3109 ++activecnt; 3802 ++activecnt;
3110} 3803}
3111 3804
3112void 3805void
3113ev_unref (EV_P) 3806ev_unref (EV_P) EV_NOEXCEPT
3114{ 3807{
3115 --activecnt; 3808 --activecnt;
3116} 3809}
3117 3810
3118void 3811void
3119ev_now_update (EV_P) 3812ev_now_update (EV_P) EV_NOEXCEPT
3120{ 3813{
3121 time_update (EV_A_ 1e100); 3814 time_update (EV_A_ 1e100);
3122} 3815}
3123 3816
3124void 3817void
3125ev_suspend (EV_P) 3818ev_suspend (EV_P) EV_NOEXCEPT
3126{ 3819{
3127 ev_now_update (EV_A); 3820 ev_now_update (EV_A);
3128} 3821}
3129 3822
3130void 3823void
3131ev_resume (EV_P) 3824ev_resume (EV_P) EV_NOEXCEPT
3132{ 3825{
3133 ev_tstamp mn_prev = mn_now; 3826 ev_tstamp mn_prev = mn_now;
3134 3827
3135 ev_now_update (EV_A); 3828 ev_now_update (EV_A);
3136 timers_reschedule (EV_A_ mn_now - mn_prev); 3829 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3175 w->pending = 0; 3868 w->pending = 0;
3176 } 3869 }
3177} 3870}
3178 3871
3179int 3872int
3180ev_clear_pending (EV_P_ void *w) 3873ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3181{ 3874{
3182 W w_ = (W)w; 3875 W w_ = (W)w;
3183 int pending = w_->pending; 3876 int pending = w_->pending;
3184 3877
3185 if (expect_true (pending)) 3878 if (expect_true (pending))
… …
3217 w->active = 0; 3910 w->active = 0;
3218} 3911}
3219 3912
3220/*****************************************************************************/ 3913/*****************************************************************************/
3221 3914
3222void noinline 3915noinline
3916void
3223ev_io_start (EV_P_ ev_io *w) 3917ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3224{ 3918{
3225 int fd = w->fd; 3919 int fd = w->fd;
3226 3920
3227 if (expect_false (ev_is_active (w))) 3921 if (expect_false (ev_is_active (w)))
3228 return; 3922 return;
3229 3923
3230 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3924 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3231 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3925 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3232 3926
3927#if EV_VERIFY >= 2
3928 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3929#endif
3233 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3234 3931
3235 ev_start (EV_A_ (W)w, 1); 3932 ev_start (EV_A_ (W)w, 1);
3236 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3933 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3237 wlist_add (&anfds[fd].head, (WL)w); 3934 wlist_add (&anfds[fd].head, (WL)w);
3935
3936 /* common bug, apparently */
3937 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3238 3938
3239 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3939 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3240 w->events &= ~EV__IOFDSET; 3940 w->events &= ~EV__IOFDSET;
3241 3941
3242 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
3243} 3943}
3244 3944
3245void noinline 3945noinline
3946void
3246ev_io_stop (EV_P_ ev_io *w) 3947ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3247{ 3948{
3248 clear_pending (EV_A_ (W)w); 3949 clear_pending (EV_A_ (W)w);
3249 if (expect_false (!ev_is_active (w))) 3950 if (expect_false (!ev_is_active (w)))
3250 return; 3951 return;
3251 3952
3252 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3953 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3253 3954
3955#if EV_VERIFY >= 2
3956 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3957#endif
3254 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
3255 3959
3256 wlist_del (&anfds[w->fd].head, (WL)w); 3960 wlist_del (&anfds[w->fd].head, (WL)w);
3257 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3258 3962
3259 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3963 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3260 3964
3261 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
3262} 3966}
3263 3967
3264void noinline 3968noinline
3969void
3265ev_timer_start (EV_P_ ev_timer *w) 3970ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3266{ 3971{
3267 if (expect_false (ev_is_active (w))) 3972 if (expect_false (ev_is_active (w)))
3268 return; 3973 return;
3269 3974
3270 ev_at (w) += mn_now; 3975 ev_at (w) += mn_now;
… …
3273 3978
3274 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
3275 3980
3276 ++timercnt; 3981 ++timercnt;
3277 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3982 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3278 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3983 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3279 ANHE_w (timers [ev_active (w)]) = (WT)w; 3984 ANHE_w (timers [ev_active (w)]) = (WT)w;
3280 ANHE_at_cache (timers [ev_active (w)]); 3985 ANHE_at_cache (timers [ev_active (w)]);
3281 upheap (timers, ev_active (w)); 3986 upheap (timers, ev_active (w));
3282 3987
3283 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3284 3989
3285 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3990 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3286} 3991}
3287 3992
3288void noinline 3993noinline
3994void
3289ev_timer_stop (EV_P_ ev_timer *w) 3995ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3290{ 3996{
3291 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
3292 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
3293 return; 3999 return;
3294 4000
… …
3313 ev_stop (EV_A_ (W)w); 4019 ev_stop (EV_A_ (W)w);
3314 4020
3315 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3316} 4022}
3317 4023
3318void noinline 4024noinline
4025void
3319ev_timer_again (EV_P_ ev_timer *w) 4026ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3320{ 4027{
3321 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
3322 4029
3323 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3324 4031
… …
3341 4048
3342 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
3343} 4050}
3344 4051
3345ev_tstamp 4052ev_tstamp
3346ev_timer_remaining (EV_P_ ev_timer *w) 4053ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3347{ 4054{
3348 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4055 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3349} 4056}
3350 4057
3351#if EV_PERIODIC_ENABLE 4058#if EV_PERIODIC_ENABLE
3352void noinline 4059noinline
4060void
3353ev_periodic_start (EV_P_ ev_periodic *w) 4061ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3354{ 4062{
3355 if (expect_false (ev_is_active (w))) 4063 if (expect_false (ev_is_active (w)))
3356 return; 4064 return;
3357 4065
3358 if (w->reschedule_cb) 4066 if (w->reschedule_cb)
… …
3367 4075
3368 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3369 4077
3370 ++periodiccnt; 4078 ++periodiccnt;
3371 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4079 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3372 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4080 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3373 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4081 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3374 ANHE_at_cache (periodics [ev_active (w)]); 4082 ANHE_at_cache (periodics [ev_active (w)]);
3375 upheap (periodics, ev_active (w)); 4083 upheap (periodics, ev_active (w));
3376 4084
3377 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3378 4086
3379 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4087 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3380} 4088}
3381 4089
3382void noinline 4090noinline
4091void
3383ev_periodic_stop (EV_P_ ev_periodic *w) 4092ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3384{ 4093{
3385 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
3386 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
3387 return; 4096 return;
3388 4097
… …
3405 ev_stop (EV_A_ (W)w); 4114 ev_stop (EV_A_ (W)w);
3406 4115
3407 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
3408} 4117}
3409 4118
3410void noinline 4119noinline
4120void
3411ev_periodic_again (EV_P_ ev_periodic *w) 4121ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3412{ 4122{
3413 /* TODO: use adjustheap and recalculation */ 4123 /* TODO: use adjustheap and recalculation */
3414 ev_periodic_stop (EV_A_ w); 4124 ev_periodic_stop (EV_A_ w);
3415 ev_periodic_start (EV_A_ w); 4125 ev_periodic_start (EV_A_ w);
3416} 4126}
… …
3420# define SA_RESTART 0 4130# define SA_RESTART 0
3421#endif 4131#endif
3422 4132
3423#if EV_SIGNAL_ENABLE 4133#if EV_SIGNAL_ENABLE
3424 4134
3425void noinline 4135noinline
4136void
3426ev_signal_start (EV_P_ ev_signal *w) 4137ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3427{ 4138{
3428 if (expect_false (ev_is_active (w))) 4139 if (expect_false (ev_is_active (w)))
3429 return; 4140 return;
3430 4141
3431 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4142 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3433#if EV_MULTIPLICITY 4144#if EV_MULTIPLICITY
3434 assert (("libev: a signal must not be attached to two different loops", 4145 assert (("libev: a signal must not be attached to two different loops",
3435 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4146 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3436 4147
3437 signals [w->signum - 1].loop = EV_A; 4148 signals [w->signum - 1].loop = EV_A;
4149 ECB_MEMORY_FENCE_RELEASE;
3438#endif 4150#endif
3439 4151
3440 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3441 4153
3442#if EV_USE_SIGNALFD 4154#if EV_USE_SIGNALFD
… …
3501 } 4213 }
3502 4214
3503 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
3504} 4216}
3505 4217
3506void noinline 4218noinline
4219void
3507ev_signal_stop (EV_P_ ev_signal *w) 4220ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3508{ 4221{
3509 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3511 return; 4224 return;
3512 4225
… …
3543#endif 4256#endif
3544 4257
3545#if EV_CHILD_ENABLE 4258#if EV_CHILD_ENABLE
3546 4259
3547void 4260void
3548ev_child_start (EV_P_ ev_child *w) 4261ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3549{ 4262{
3550#if EV_MULTIPLICITY 4263#if EV_MULTIPLICITY
3551 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4264 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3552#endif 4265#endif
3553 if (expect_false (ev_is_active (w))) 4266 if (expect_false (ev_is_active (w)))
… …
3560 4273
3561 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
3562} 4275}
3563 4276
3564void 4277void
3565ev_child_stop (EV_P_ ev_child *w) 4278ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3566{ 4279{
3567 clear_pending (EV_A_ (W)w); 4280 clear_pending (EV_A_ (W)w);
3568 if (expect_false (!ev_is_active (w))) 4281 if (expect_false (!ev_is_active (w)))
3569 return; 4282 return;
3570 4283
… …
3587 4300
3588#define DEF_STAT_INTERVAL 5.0074891 4301#define DEF_STAT_INTERVAL 5.0074891
3589#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4302#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3590#define MIN_STAT_INTERVAL 0.1074891 4303#define MIN_STAT_INTERVAL 0.1074891
3591 4304
3592static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4305noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3593 4306
3594#if EV_USE_INOTIFY 4307#if EV_USE_INOTIFY
3595 4308
3596/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4309/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3597# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4310# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3598 4311
3599static void noinline 4312noinline
4313static void
3600infy_add (EV_P_ ev_stat *w) 4314infy_add (EV_P_ ev_stat *w)
3601{ 4315{
3602 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4316 w->wd = inotify_add_watch (fs_fd, w->path,
4317 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4318 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4319 | IN_DONT_FOLLOW | IN_MASK_ADD);
3603 4320
3604 if (w->wd >= 0) 4321 if (w->wd >= 0)
3605 { 4322 {
3606 struct statfs sfs; 4323 struct statfs sfs;
3607 4324
… …
3611 4328
3612 if (!fs_2625) 4329 if (!fs_2625)
3613 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4330 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3614 else if (!statfs (w->path, &sfs) 4331 else if (!statfs (w->path, &sfs)
3615 && (sfs.f_type == 0x1373 /* devfs */ 4332 && (sfs.f_type == 0x1373 /* devfs */
4333 || sfs.f_type == 0x4006 /* fat */
4334 || sfs.f_type == 0x4d44 /* msdos */
3616 || sfs.f_type == 0xEF53 /* ext2/3 */ 4335 || sfs.f_type == 0xEF53 /* ext2/3 */
4336 || sfs.f_type == 0x72b6 /* jffs2 */
4337 || sfs.f_type == 0x858458f6 /* ramfs */
4338 || sfs.f_type == 0x5346544e /* ntfs */
3617 || sfs.f_type == 0x3153464a /* jfs */ 4339 || sfs.f_type == 0x3153464a /* jfs */
4340 || sfs.f_type == 0x9123683e /* btrfs */
3618 || sfs.f_type == 0x52654973 /* reiser3 */ 4341 || sfs.f_type == 0x52654973 /* reiser3 */
3619 || sfs.f_type == 0x01021994 /* tempfs */ 4342 || sfs.f_type == 0x01021994 /* tmpfs */
3620 || sfs.f_type == 0x58465342 /* xfs */)) 4343 || sfs.f_type == 0x58465342 /* xfs */))
3621 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4344 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3622 else 4345 else
3623 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4346 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3624 } 4347 }
… …
3659 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3660 ev_timer_again (EV_A_ &w->timer); 4383 ev_timer_again (EV_A_ &w->timer);
3661 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3662} 4385}
3663 4386
3664static void noinline 4387noinline
4388static void
3665infy_del (EV_P_ ev_stat *w) 4389infy_del (EV_P_ ev_stat *w)
3666{ 4390{
3667 int slot; 4391 int slot;
3668 int wd = w->wd; 4392 int wd = w->wd;
3669 4393
… …
3676 4400
3677 /* remove this watcher, if others are watching it, they will rearm */ 4401 /* remove this watcher, if others are watching it, they will rearm */
3678 inotify_rm_watch (fs_fd, wd); 4402 inotify_rm_watch (fs_fd, wd);
3679} 4403}
3680 4404
3681static void noinline 4405noinline
4406static void
3682infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4407infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3683{ 4408{
3684 if (slot < 0) 4409 if (slot < 0)
3685 /* overflow, need to check for all hash slots */ 4410 /* overflow, need to check for all hash slots */
3686 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3722 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4447 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3723 ofs += sizeof (struct inotify_event) + ev->len; 4448 ofs += sizeof (struct inotify_event) + ev->len;
3724 } 4449 }
3725} 4450}
3726 4451
3727inline_size void ecb_cold 4452inline_size ecb_cold
4453void
3728ev_check_2625 (EV_P) 4454ev_check_2625 (EV_P)
3729{ 4455{
3730 /* kernels < 2.6.25 are borked 4456 /* kernels < 2.6.25 are borked
3731 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4457 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3732 */ 4458 */
… …
3737} 4463}
3738 4464
3739inline_size int 4465inline_size int
3740infy_newfd (void) 4466infy_newfd (void)
3741{ 4467{
3742#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4468#if defined IN_CLOEXEC && defined IN_NONBLOCK
3743 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4469 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3744 if (fd >= 0) 4470 if (fd >= 0)
3745 return fd; 4471 return fd;
3746#endif 4472#endif
3747 return inotify_init (); 4473 return inotify_init ();
… …
3822#else 4548#else
3823# define EV_LSTAT(p,b) lstat (p, b) 4549# define EV_LSTAT(p,b) lstat (p, b)
3824#endif 4550#endif
3825 4551
3826void 4552void
3827ev_stat_stat (EV_P_ ev_stat *w) 4553ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3828{ 4554{
3829 if (lstat (w->path, &w->attr) < 0) 4555 if (lstat (w->path, &w->attr) < 0)
3830 w->attr.st_nlink = 0; 4556 w->attr.st_nlink = 0;
3831 else if (!w->attr.st_nlink) 4557 else if (!w->attr.st_nlink)
3832 w->attr.st_nlink = 1; 4558 w->attr.st_nlink = 1;
3833} 4559}
3834 4560
3835static void noinline 4561noinline
4562static void
3836stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4563stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3837{ 4564{
3838 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4565 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3839 4566
3840 ev_statdata prev = w->attr; 4567 ev_statdata prev = w->attr;
… …
3871 ev_feed_event (EV_A_ w, EV_STAT); 4598 ev_feed_event (EV_A_ w, EV_STAT);
3872 } 4599 }
3873} 4600}
3874 4601
3875void 4602void
3876ev_stat_start (EV_P_ ev_stat *w) 4603ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3877{ 4604{
3878 if (expect_false (ev_is_active (w))) 4605 if (expect_false (ev_is_active (w)))
3879 return; 4606 return;
3880 4607
3881 ev_stat_stat (EV_A_ w); 4608 ev_stat_stat (EV_A_ w);
… …
3902 4629
3903 EV_FREQUENT_CHECK; 4630 EV_FREQUENT_CHECK;
3904} 4631}
3905 4632
3906void 4633void
3907ev_stat_stop (EV_P_ ev_stat *w) 4634ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3908{ 4635{
3909 clear_pending (EV_A_ (W)w); 4636 clear_pending (EV_A_ (W)w);
3910 if (expect_false (!ev_is_active (w))) 4637 if (expect_false (!ev_is_active (w)))
3911 return; 4638 return;
3912 4639
… …
3928} 4655}
3929#endif 4656#endif
3930 4657
3931#if EV_IDLE_ENABLE 4658#if EV_IDLE_ENABLE
3932void 4659void
3933ev_idle_start (EV_P_ ev_idle *w) 4660ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3934{ 4661{
3935 if (expect_false (ev_is_active (w))) 4662 if (expect_false (ev_is_active (w)))
3936 return; 4663 return;
3937 4664
3938 pri_adjust (EV_A_ (W)w); 4665 pri_adjust (EV_A_ (W)w);
… …
3943 int active = ++idlecnt [ABSPRI (w)]; 4670 int active = ++idlecnt [ABSPRI (w)];
3944 4671
3945 ++idleall; 4672 ++idleall;
3946 ev_start (EV_A_ (W)w, active); 4673 ev_start (EV_A_ (W)w, active);
3947 4674
3948 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4675 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3949 idles [ABSPRI (w)][active - 1] = w; 4676 idles [ABSPRI (w)][active - 1] = w;
3950 } 4677 }
3951 4678
3952 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3953} 4680}
3954 4681
3955void 4682void
3956ev_idle_stop (EV_P_ ev_idle *w) 4683ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3957{ 4684{
3958 clear_pending (EV_A_ (W)w); 4685 clear_pending (EV_A_ (W)w);
3959 if (expect_false (!ev_is_active (w))) 4686 if (expect_false (!ev_is_active (w)))
3960 return; 4687 return;
3961 4688
… …
3975} 4702}
3976#endif 4703#endif
3977 4704
3978#if EV_PREPARE_ENABLE 4705#if EV_PREPARE_ENABLE
3979void 4706void
3980ev_prepare_start (EV_P_ ev_prepare *w) 4707ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3981{ 4708{
3982 if (expect_false (ev_is_active (w))) 4709 if (expect_false (ev_is_active (w)))
3983 return; 4710 return;
3984 4711
3985 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3986 4713
3987 ev_start (EV_A_ (W)w, ++preparecnt); 4714 ev_start (EV_A_ (W)w, ++preparecnt);
3988 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4715 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3989 prepares [preparecnt - 1] = w; 4716 prepares [preparecnt - 1] = w;
3990 4717
3991 EV_FREQUENT_CHECK; 4718 EV_FREQUENT_CHECK;
3992} 4719}
3993 4720
3994void 4721void
3995ev_prepare_stop (EV_P_ ev_prepare *w) 4722ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3996{ 4723{
3997 clear_pending (EV_A_ (W)w); 4724 clear_pending (EV_A_ (W)w);
3998 if (expect_false (!ev_is_active (w))) 4725 if (expect_false (!ev_is_active (w)))
3999 return; 4726 return;
4000 4727
… …
4013} 4740}
4014#endif 4741#endif
4015 4742
4016#if EV_CHECK_ENABLE 4743#if EV_CHECK_ENABLE
4017void 4744void
4018ev_check_start (EV_P_ ev_check *w) 4745ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4019{ 4746{
4020 if (expect_false (ev_is_active (w))) 4747 if (expect_false (ev_is_active (w)))
4021 return; 4748 return;
4022 4749
4023 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
4024 4751
4025 ev_start (EV_A_ (W)w, ++checkcnt); 4752 ev_start (EV_A_ (W)w, ++checkcnt);
4026 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4753 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4027 checks [checkcnt - 1] = w; 4754 checks [checkcnt - 1] = w;
4028 4755
4029 EV_FREQUENT_CHECK; 4756 EV_FREQUENT_CHECK;
4030} 4757}
4031 4758
4032void 4759void
4033ev_check_stop (EV_P_ ev_check *w) 4760ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4034{ 4761{
4035 clear_pending (EV_A_ (W)w); 4762 clear_pending (EV_A_ (W)w);
4036 if (expect_false (!ev_is_active (w))) 4763 if (expect_false (!ev_is_active (w)))
4037 return; 4764 return;
4038 4765
… …
4050 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
4051} 4778}
4052#endif 4779#endif
4053 4780
4054#if EV_EMBED_ENABLE 4781#if EV_EMBED_ENABLE
4055void noinline 4782noinline
4783void
4056ev_embed_sweep (EV_P_ ev_embed *w) 4784ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4057{ 4785{
4058 ev_run (w->other, EVRUN_NOWAIT); 4786 ev_run (w->other, EVRUN_NOWAIT);
4059} 4787}
4060 4788
4061static void 4789static void
… …
4109 ev_idle_stop (EV_A_ idle); 4837 ev_idle_stop (EV_A_ idle);
4110} 4838}
4111#endif 4839#endif
4112 4840
4113void 4841void
4114ev_embed_start (EV_P_ ev_embed *w) 4842ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4115{ 4843{
4116 if (expect_false (ev_is_active (w))) 4844 if (expect_false (ev_is_active (w)))
4117 return; 4845 return;
4118 4846
4119 { 4847 {
… …
4140 4868
4141 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
4142} 4870}
4143 4871
4144void 4872void
4145ev_embed_stop (EV_P_ ev_embed *w) 4873ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4146{ 4874{
4147 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
4148 if (expect_false (!ev_is_active (w))) 4876 if (expect_false (!ev_is_active (w)))
4149 return; 4877 return;
4150 4878
… …
4160} 4888}
4161#endif 4889#endif
4162 4890
4163#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
4164void 4892void
4165ev_fork_start (EV_P_ ev_fork *w) 4893ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4166{ 4894{
4167 if (expect_false (ev_is_active (w))) 4895 if (expect_false (ev_is_active (w)))
4168 return; 4896 return;
4169 4897
4170 EV_FREQUENT_CHECK; 4898 EV_FREQUENT_CHECK;
4171 4899
4172 ev_start (EV_A_ (W)w, ++forkcnt); 4900 ev_start (EV_A_ (W)w, ++forkcnt);
4173 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4901 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4174 forks [forkcnt - 1] = w; 4902 forks [forkcnt - 1] = w;
4175 4903
4176 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
4177} 4905}
4178 4906
4179void 4907void
4180ev_fork_stop (EV_P_ ev_fork *w) 4908ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4181{ 4909{
4182 clear_pending (EV_A_ (W)w); 4910 clear_pending (EV_A_ (W)w);
4183 if (expect_false (!ev_is_active (w))) 4911 if (expect_false (!ev_is_active (w)))
4184 return; 4912 return;
4185 4913
… …
4198} 4926}
4199#endif 4927#endif
4200 4928
4201#if EV_CLEANUP_ENABLE 4929#if EV_CLEANUP_ENABLE
4202void 4930void
4203ev_cleanup_start (EV_P_ ev_cleanup *w) 4931ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4204{ 4932{
4205 if (expect_false (ev_is_active (w))) 4933 if (expect_false (ev_is_active (w)))
4206 return; 4934 return;
4207 4935
4208 EV_FREQUENT_CHECK; 4936 EV_FREQUENT_CHECK;
4209 4937
4210 ev_start (EV_A_ (W)w, ++cleanupcnt); 4938 ev_start (EV_A_ (W)w, ++cleanupcnt);
4211 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4939 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4212 cleanups [cleanupcnt - 1] = w; 4940 cleanups [cleanupcnt - 1] = w;
4213 4941
4214 /* cleanup watchers should never keep a refcount on the loop */ 4942 /* cleanup watchers should never keep a refcount on the loop */
4215 ev_unref (EV_A); 4943 ev_unref (EV_A);
4216 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4217} 4945}
4218 4946
4219void 4947void
4220ev_cleanup_stop (EV_P_ ev_cleanup *w) 4948ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4221{ 4949{
4222 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w))) 4951 if (expect_false (!ev_is_active (w)))
4224 return; 4952 return;
4225 4953
… …
4239} 4967}
4240#endif 4968#endif
4241 4969
4242#if EV_ASYNC_ENABLE 4970#if EV_ASYNC_ENABLE
4243void 4971void
4244ev_async_start (EV_P_ ev_async *w) 4972ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4245{ 4973{
4246 if (expect_false (ev_is_active (w))) 4974 if (expect_false (ev_is_active (w)))
4247 return; 4975 return;
4248 4976
4249 w->sent = 0; 4977 w->sent = 0;
… …
4251 evpipe_init (EV_A); 4979 evpipe_init (EV_A);
4252 4980
4253 EV_FREQUENT_CHECK; 4981 EV_FREQUENT_CHECK;
4254 4982
4255 ev_start (EV_A_ (W)w, ++asynccnt); 4983 ev_start (EV_A_ (W)w, ++asynccnt);
4256 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4984 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4257 asyncs [asynccnt - 1] = w; 4985 asyncs [asynccnt - 1] = w;
4258 4986
4259 EV_FREQUENT_CHECK; 4987 EV_FREQUENT_CHECK;
4260} 4988}
4261 4989
4262void 4990void
4263ev_async_stop (EV_P_ ev_async *w) 4991ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4264{ 4992{
4265 clear_pending (EV_A_ (W)w); 4993 clear_pending (EV_A_ (W)w);
4266 if (expect_false (!ev_is_active (w))) 4994 if (expect_false (!ev_is_active (w)))
4267 return; 4995 return;
4268 4996
… …
4279 5007
4280 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
4281} 5009}
4282 5010
4283void 5011void
4284ev_async_send (EV_P_ ev_async *w) 5012ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4285{ 5013{
4286 w->sent = 1; 5014 w->sent = 1;
4287 evpipe_write (EV_A_ &async_pending); 5015 evpipe_write (EV_A_ &async_pending);
4288} 5016}
4289#endif 5017#endif
… …
4326 5054
4327 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5055 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4328} 5056}
4329 5057
4330void 5058void
4331ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5059ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4332{ 5060{
4333 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5061 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4334
4335 if (expect_false (!once))
4336 {
4337 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4338 return;
4339 }
4340 5062
4341 once->cb = cb; 5063 once->cb = cb;
4342 once->arg = arg; 5064 once->arg = arg;
4343 5065
4344 ev_init (&once->io, once_cb_io); 5066 ev_init (&once->io, once_cb_io);
… …
4357} 5079}
4358 5080
4359/*****************************************************************************/ 5081/*****************************************************************************/
4360 5082
4361#if EV_WALK_ENABLE 5083#if EV_WALK_ENABLE
4362void ecb_cold 5084ecb_cold
5085void
4363ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5086ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4364{ 5087{
4365 int i, j; 5088 int i, j;
4366 ev_watcher_list *wl, *wn; 5089 ev_watcher_list *wl, *wn;
4367 5090
4368 if (types & (EV_IO | EV_EMBED)) 5091 if (types & (EV_IO | EV_EMBED))

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