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Comparing libev/ev.c (file contents):
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC vs.
Revision 1.511 by root, Fri Nov 22 14:32:13 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
… …
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 118# endif
119 119
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
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
165#endif 183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
166 194
167#include <stdlib.h> 195#include <stdlib.h>
168#include <string.h> 196#include <string.h>
169#include <fcntl.h> 197#include <fcntl.h>
170#include <stddef.h> 198#include <stddef.h>
… …
183# include EV_H 211# include EV_H
184#else 212#else
185# include "ev.h" 213# include "ev.h"
186#endif 214#endif
187 215
188EV_CPP(extern "C" {) 216#if EV_NO_THREADS
217# undef EV_NO_SMP
218# define EV_NO_SMP 1
219# undef ECB_NO_THREADS
220# define ECB_NO_THREADS 1
221#endif
222#if EV_NO_SMP
223# undef EV_NO_SMP
224# define ECB_NO_SMP 1
225#endif
189 226
190#ifndef _WIN32 227#ifndef _WIN32
191# include <sys/time.h> 228# include <sys/time.h>
192# include <sys/wait.h> 229# include <sys/wait.h>
193# include <unistd.h> 230# include <unistd.h>
194#else 231#else
195# include <io.h> 232# include <io.h>
196# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
197# include <windows.h> 235# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
200# endif 238# endif
201# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
202#endif 240#endif
203 241
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
213 243
214/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 245#if defined EV_NSIG
216/* use what's provided */ 246/* use what's provided */
217#elif defined (NSIG) 247#elif defined NSIG
218# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 249#elif defined _NSIG
220# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 251#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 253#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 257#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 259#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 263#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 265#else
236# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 267#endif
241 268
242#ifndef EV_USE_FLOOR 269#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 270# define EV_USE_FLOOR 0
244#endif 271#endif
245 272
246#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 276# else
250# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
251# endif 278# endif
252#endif 279#endif
253 280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
287# endif
288#endif
289
254#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 292# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 293# else
258# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
259# endif 295# endif
260#endif 296#endif
… …
297 333
298#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 335# define EV_USE_PORT 0
300#endif 336#endif
301 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
302#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 356# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 357# else
306# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
… …
347 399
348#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 402#endif
351 403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
418#endif
419
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 423# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
360# else 429# else
361# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
363# endif 432# endif
364#endif 433#endif
365 434
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 435/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 436
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
377#endif 440#endif
378 441
… …
384#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
385# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
387#endif 450#endif
388 451
452#if __linux && EV_USE_IOURING
453# include <linux/fs.h>
454# ifndef RWF_SYNC
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
389#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 462# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 463# include <sys/select.h>
464# endif
465#endif
466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
393# endif 489# endif
394#endif 490#endif
395 491
396#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
397# include <sys/statfs.h> 493# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 495/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
403# endif 499# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 500#endif
409 501
410#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 503/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 504# include <stdint.h>
… …
443 uint32_t ssi_signo; 535 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
445}; 537};
446#endif 538#endif
447 539
448/**/ 540/*****************************************************************************/
449 541
450#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 544#else
453# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
459 */ 551 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 554
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
468 575
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 577/* ECB.H BEGIN */
471/* 578/*
472 * libecb - http://software.schmorp.de/pkg/libecb 579 * libecb - http://software.schmorp.de/pkg/libecb
473 * 580 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 582 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 583 * All rights reserved.
477 * 584 *
478 * Redistribution and use in source and binary forms, with or without modifica- 585 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 586 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 604 * OF THE POSSIBILITY OF SUCH DAMAGE.
605 *
606 * Alternatively, the contents of this file may be used under the terms of
607 * the GNU General Public License ("GPL") version 2 or any later version,
608 * in which case the provisions of the GPL are applicable instead of
609 * the above. If you wish to allow the use of your version of this file
610 * only under the terms of the GPL and not to allow others to use your
611 * version of this file under the BSD license, indicate your decision
612 * by deleting the provisions above and replace them with the notice
613 * and other provisions required by the GPL. If you do not delete the
614 * provisions above, a recipient may use your version of this file under
615 * either the BSD or the GPL.
498 */ 616 */
499 617
500#ifndef ECB_H 618#ifndef ECB_H
501#define ECB_H 619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
502 623
503#ifdef _WIN32 624#ifdef _WIN32
504 typedef signed char int8_t; 625 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 626 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 627 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 633 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 634 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 635 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 636 typedef unsigned __int64 uint64_t;
516 #endif 637 #endif
638 #ifdef _WIN64
639 #define ECB_PTRSIZE 8
640 typedef uint64_t uintptr_t;
641 typedef int64_t intptr_t;
642 #else
643 #define ECB_PTRSIZE 4
644 typedef uint32_t uintptr_t;
645 typedef int32_t intptr_t;
646 #endif
517#else 647#else
518 #include <inttypes.h> 648 #include <inttypes.h>
649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
650 #define ECB_PTRSIZE 8
651 #else
652 #define ECB_PTRSIZE 4
653 #endif
654#endif
655
656#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
657#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
658
659/* work around x32 idiocy by defining proper macros */
660#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
661 #if _ILP32
662 #define ECB_AMD64_X32 1
663 #else
664 #define ECB_AMD64 1
665 #endif
519#endif 666#endif
520 667
521/* many compilers define _GNUC_ to some versions but then only implement 668/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 669 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 670 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 671 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 672 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 673 * an issue with that they should have done it right in the first place.
527 */ 674 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 675#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 676 #define ECB_GCC_VERSION(major,minor) 0
531 #else 677#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 678 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 679#endif
680
681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
682
683#if __clang__ && defined __has_builtin
684 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
685#else
686 #define ECB_CLANG_BUILTIN(x) 0
687#endif
688
689#if __clang__ && defined __has_extension
690 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
691#else
692 #define ECB_CLANG_EXTENSION(x) 0
693#endif
694
695#define ECB_CPP (__cplusplus+0)
696#define ECB_CPP11 (__cplusplus >= 201103L)
697#define ECB_CPP14 (__cplusplus >= 201402L)
698#define ECB_CPP17 (__cplusplus >= 201703L)
699
700#if ECB_CPP
701 #define ECB_C 0
702 #define ECB_STDC_VERSION 0
703#else
704 #define ECB_C 1
705 #define ECB_STDC_VERSION __STDC_VERSION__
706#endif
707
708#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
709#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
710#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
711
712#if ECB_CPP
713 #define ECB_EXTERN_C extern "C"
714 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
715 #define ECB_EXTERN_C_END }
716#else
717 #define ECB_EXTERN_C extern
718 #define ECB_EXTERN_C_BEG
719 #define ECB_EXTERN_C_END
534#endif 720#endif
535 721
536/*****************************************************************************/ 722/*****************************************************************************/
537 723
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 726
541#if ECB_NO_THREADS || ECB_NO_SMP 727#if ECB_NO_THREADS
728 #define ECB_NO_SMP 1
729#endif
730
731#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 732 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 733#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 734
735/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
736#if __xlC__ && ECB_CPP
737 #include <builtins.h>
738#endif
739
740#if 1400 <= _MSC_VER
741 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
545#endif 742#endif
546 743
547#ifndef ECB_MEMORY_FENCE 744#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
747 #if __i386 || __i386__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 751 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
777 #elif defined __s390__ || defined __s390x__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
783 #elif defined __alpha__
784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
557 #endif 796 #endif
558 #endif 797 #endif
559#endif 798#endif
560 799
561#ifndef ECB_MEMORY_FENCE 800#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4) 801 #if ECB_GCC_VERSION(4,7)
802 /* see comment below (stdatomic.h) about the C11 memory model. */
803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
805 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
806 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
807
808 #elif ECB_CLANG_EXTENSION(c_atomic)
809 /* see comment below (stdatomic.h) about the C11 memory model. */
810 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
811 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
812 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
813 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
814
815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
563 #define ECB_MEMORY_FENCE __sync_synchronize () 816 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) 817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) 818 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
819 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
820 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
821 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
822 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32) 828 #elif defined _WIN32
572 #include <WinNT.h> 829 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 832 #include <mbarrier.h>
833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
837 #elif __xlC__
838 #define ECB_MEMORY_FENCE __sync ()
576 #endif 839 #endif
577#endif 840#endif
578 841
579#ifndef ECB_MEMORY_FENCE 842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
850 #endif
851#endif
852
853#ifndef ECB_MEMORY_FENCE
854 #if !ECB_AVOID_PTHREADS
580 /* 855 /*
581 * if you get undefined symbol references to pthread_mutex_lock, 856 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement 857 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler 858 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library 859 * OR provide pthread.h and link against the posix thread library
585 * of your system. 860 * of your system.
586 */ 861 */
587 #include <pthread.h> 862 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1 863 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 864 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590 865
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
868 #endif
869#endif
870
871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
873#endif
874
875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif 877#endif
596 878
879#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
880 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
881#endif
882
597/*****************************************************************************/ 883/*****************************************************************************/
598 884
599#define ECB_C99 (__STDC_VERSION__ >= 199901L) 885#if ECB_CPP
600
601#if __cplusplus
602 #define ecb_inline static inline 886 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
605#elif ECB_C99 889#elif ECB_C99
606 #define ecb_inline static inline 890 #define ecb_inline static inline
… …
620 904
621#define ECB_CONCAT_(a, b) a ## b 905#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a 907#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
625 910
626#define ecb_function_ ecb_inline 911#define ecb_function_ ecb_inline
627 912
628#if ECB_GCC_VERSION(3,1) 913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
629 #define ecb_attribute(attrlist) __attribute__(attrlist) 914 #define ecb_attribute(attrlist) __attribute__ (attrlist)
915#else
916 #define ecb_attribute(attrlist)
917#endif
918
919#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr) 920 #define ecb_is_constant(expr) __builtin_constant_p (expr)
921#else
922 /* possible C11 impl for integral types
923 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
924 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
925
926 #define ecb_is_constant(expr) 0
927#endif
928
929#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 930 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
931#else
932 #define ecb_expect(expr,value) (expr)
933#endif
934
935#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else 937#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
638#endif 939#endif
639 940
640/* no emulation for ecb_decltype */ 941/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5) 942#if ECB_CPP11
943 // older implementations might have problems with decltype(x)::type, work around it
944 template<class T> struct ecb_decltype_t { typedef T type; };
642 #define ecb_decltype(x) __decltype(x) 945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
643#elif ECB_GCC_VERSION(3,0) 946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
644 #define ecb_decltype(x) __typeof(x) 947 #define ecb_decltype(x) __typeof__ (x)
645#endif 948#endif
646 949
950#if _MSC_VER >= 1300
951 #define ecb_deprecated __declspec (deprecated)
952#else
953 #define ecb_deprecated ecb_attribute ((__deprecated__))
954#endif
955
956#if _MSC_VER >= 1500
957 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
958#elif ECB_GCC_VERSION(4,5)
959 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
960#else
961 #define ecb_deprecated_message(msg) ecb_deprecated
962#endif
963
964#if _MSC_VER >= 1400
965 #define ecb_noinline __declspec (noinline)
966#else
647#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__)) 968#endif
969
649#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__)) 972#define ecb_pure ecb_attribute ((__pure__))
973
974#if ECB_C11 || __IBMC_NORETURN
975 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
976 #define ecb_noreturn _Noreturn
977#elif ECB_CPP11
978 #define ecb_noreturn [[noreturn]]
979#elif _MSC_VER >= 1200
980 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
981 #define ecb_noreturn __declspec (noreturn)
982#else
983 #define ecb_noreturn ecb_attribute ((__noreturn__))
984#endif
652 985
653#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__)) 987 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__)) 988 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__)) 989 #define ecb_cold ecb_attribute ((__cold__))
… …
668/* for compatibility to the rest of the world */ 1001/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr) 1002#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr) 1003#define ecb_unlikely(expr) ecb_expect_false (expr)
671 1004
672/* count trailing zero bits and count # of one bits */ 1005/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4) 1006#if ECB_GCC_VERSION(3,4) \
1007 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1008 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1009 && ECB_CLANG_BUILTIN(__builtin_popcount))
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x) 1013 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x) 1014 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x) 1015 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */ 1016 /* no popcountll */
681#else 1017#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
683 ecb_function_ int 1019 ecb_function_ ecb_const int
684 ecb_ctz32 (uint32_t x) 1020 ecb_ctz32 (uint32_t x)
685 { 1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanForward (&r, x);
1025 return (int)r;
1026#else
686 int r = 0; 1027 int r = 0;
687 1028
688 x &= ~x + 1; /* this isolates the lowest bit */ 1029 x &= ~x + 1; /* this isolates the lowest bit */
689 1030
690#if ECB_branchless_on_i386 1031#if ECB_branchless_on_i386
… …
700 if (x & 0xff00ff00) r += 8; 1041 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16; 1042 if (x & 0xffff0000) r += 16;
702#endif 1043#endif
703 1044
704 return r; 1045 return r;
1046#endif
705 } 1047 }
706 1048
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
708 ecb_function_ int 1050 ecb_function_ ecb_const int
709 ecb_ctz64 (uint64_t x) 1051 ecb_ctz64 (uint64_t x)
710 { 1052 {
1053#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1054 unsigned long r;
1055 _BitScanForward64 (&r, x);
1056 return (int)r;
1057#else
711 int shift = x & 0xffffffffU ? 0 : 32; 1058 int shift = x & 0xffffffff ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift; 1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
713 } 1061 }
714 1062
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
716 ecb_function_ int 1064 ecb_function_ ecb_const int
717 ecb_popcount32 (uint32_t x) 1065 ecb_popcount32 (uint32_t x)
718 { 1066 {
719 x -= (x >> 1) & 0x55555555; 1067 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f; 1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101; 1070 x *= 0x01010101;
723 1071
724 return x >> 24; 1072 return x >> 24;
725 } 1073 }
726 1074
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
728 ecb_function_ int ecb_ld32 (uint32_t x) 1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
729 { 1077 {
1078#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse (&r, x);
1081 return (int)r;
1082#else
730 int r = 0; 1083 int r = 0;
731 1084
732 if (x >> 16) { x >>= 16; r += 16; } 1085 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; } 1086 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; } 1087 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; } 1088 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; } 1089 if (x >> 1) { r += 1; }
737 1090
738 return r; 1091 return r;
1092#endif
739 } 1093 }
740 1094
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
742 ecb_function_ int ecb_ld64 (uint64_t x) 1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
743 { 1097 {
1098#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1099 unsigned long r;
1100 _BitScanReverse64 (&r, x);
1101 return (int)r;
1102#else
744 int r = 0; 1103 int r = 0;
745 1104
746 if (x >> 32) { x >>= 32; r += 32; } 1105 if (x >> 32) { x >>= 32; r += 32; }
747 1106
748 return r + ecb_ld32 (x); 1107 return r + ecb_ld32 (x);
1108#endif
749 } 1109 }
750#endif 1110#endif
1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1119{
1120 return ( (x * 0x0802U & 0x22110U)
1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1122}
1123
1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1126{
1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1130 x = ( x >> 8 ) | ( x << 8);
1131
1132 return x;
1133}
1134
1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1137{
1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1142 x = ( x >> 16 ) | ( x << 16);
1143
1144 return x;
1145}
751 1146
752/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */ 1148/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
755ecb_function_ int 1150ecb_function_ ecb_const int
756ecb_popcount64 (uint64_t x) 1151ecb_popcount64 (uint64_t x)
757{ 1152{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759} 1154}
760 1155
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
769 1164
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1165ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1166ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1167ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1168ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1169ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1170ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1171ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1172ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778 1173
779#if ECB_GCC_VERSION(4,3) 1174#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1175 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1176 #define ecb_bswap16(x) __builtin_bswap16 (x)
1177 #else
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
781 #define ecb_bswap32(x) __builtin_bswap32 (x) 1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x) 1181 #define ecb_bswap64(x) __builtin_bswap64 (x)
1182#elif _MSC_VER
1183 #include <stdlib.h>
1184 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1185 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1186 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
783#else 1187#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
785 ecb_function_ uint16_t 1189 ecb_function_ ecb_const uint16_t
786 ecb_bswap16 (uint16_t x) 1190 ecb_bswap16 (uint16_t x)
787 { 1191 {
788 return ecb_rotl16 (x, 8); 1192 return ecb_rotl16 (x, 8);
789 } 1193 }
790 1194
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
792 ecb_function_ uint32_t 1196 ecb_function_ ecb_const uint32_t
793 ecb_bswap32 (uint32_t x) 1197 ecb_bswap32 (uint32_t x)
794 { 1198 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 } 1200 }
797 1201
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
799 ecb_function_ uint64_t 1203 ecb_function_ ecb_const uint64_t
800 ecb_bswap64 (uint64_t x) 1204 ecb_bswap64 (uint64_t x)
801 { 1205 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 } 1207 }
804#endif 1208#endif
805 1209
806#if ECB_GCC_VERSION(4,5) 1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
807 #define ecb_unreachable() __builtin_unreachable () 1211 #define ecb_unreachable() __builtin_unreachable ()
808#else 1212#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
811 ecb_function_ void ecb_unreachable (void) { } 1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
812#endif 1216#endif
813 1217
814/* try to tell the compiler that some condition is definitely true */ 1218/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
816 1220
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
818ecb_function_ unsigned char 1222ecb_inline ecb_const uint32_t
819ecb_byteorder_helper (void) 1223ecb_byteorder_helper (void)
820{ 1224{
821 const uint32_t u = 0x11223344; 1225 /* the union code still generates code under pressure in gcc, */
822 return *(unsigned char *)&u; 1226 /* but less than using pointers, and always seems to */
1227 /* successfully return a constant. */
1228 /* the reason why we have this horrible preprocessor mess */
1229 /* is to avoid it in all cases, at least on common architectures */
1230 /* or when using a recent enough gcc version (>= 4.6) */
1231#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1232 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1233 #define ECB_LITTLE_ENDIAN 1
1234 return 0x44332211;
1235#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1236 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1237 #define ECB_BIG_ENDIAN 1
1238 return 0x11223344;
1239#else
1240 union
1241 {
1242 uint8_t c[4];
1243 uint32_t u;
1244 } u = { 0x11, 0x22, 0x33, 0x44 };
1245 return u.u;
1246#endif
823} 1247}
824 1248
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
829 1253
830#if ECB_GCC_VERSION(3,0) || ECB_C99 1254#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else 1256#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1258#endif
1259
1260#if ECB_CPP
1261 template<typename T>
1262 static inline T ecb_div_rd (T val, T div)
1263 {
1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1265 }
1266 template<typename T>
1267 static inline T ecb_div_ru (T val, T div)
1268 {
1269 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1270 }
1271#else
1272 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1273 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
834#endif 1274#endif
835 1275
836#if ecb_cplusplus_does_not_suck 1276#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N> 1278 template<typename T, int N>
… …
842 } 1282 }
843#else 1283#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif 1285#endif
846 1286
1287ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1288ecb_function_ ecb_const uint32_t
1289ecb_binary16_to_binary32 (uint32_t x)
1290{
1291 unsigned int s = (x & 0x8000) << (31 - 15);
1292 int e = (x >> 10) & 0x001f;
1293 unsigned int m = x & 0x03ff;
1294
1295 if (ecb_expect_false (e == 31))
1296 /* infinity or NaN */
1297 e = 255 - (127 - 15);
1298 else if (ecb_expect_false (!e))
1299 {
1300 if (ecb_expect_true (!m))
1301 /* zero, handled by code below by forcing e to 0 */
1302 e = 0 - (127 - 15);
1303 else
1304 {
1305 /* subnormal, renormalise */
1306 unsigned int s = 10 - ecb_ld32 (m);
1307
1308 m = (m << s) & 0x3ff; /* mask implicit bit */
1309 e -= s - 1;
1310 }
1311 }
1312
1313 /* e and m now are normalised, or zero, (or inf or nan) */
1314 e += 127 - 15;
1315
1316 return s | (e << 23) | (m << (23 - 10));
1317}
1318
1319ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1320ecb_function_ ecb_const uint16_t
1321ecb_binary32_to_binary16 (uint32_t x)
1322{
1323 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1324 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1325 unsigned int m = x & 0x007fffff;
1326
1327 x &= 0x7fffffff;
1328
1329 /* if it's within range of binary16 normals, use fast path */
1330 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1331 {
1332 /* mantissa round-to-even */
1333 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1334
1335 /* handle overflow */
1336 if (ecb_expect_false (m >= 0x00800000))
1337 {
1338 m >>= 1;
1339 e += 1;
1340 }
1341
1342 return s | (e << 10) | (m >> (23 - 10));
1343 }
1344
1345 /* handle large numbers and infinity */
1346 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1347 return s | 0x7c00;
1348
1349 /* handle zero, subnormals and small numbers */
1350 if (ecb_expect_true (x < 0x38800000))
1351 {
1352 /* zero */
1353 if (ecb_expect_true (!x))
1354 return s;
1355
1356 /* handle subnormals */
1357
1358 /* too small, will be zero */
1359 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1360 return s;
1361
1362 m |= 0x00800000; /* make implicit bit explicit */
1363
1364 /* very tricky - we need to round to the nearest e (+10) bit value */
1365 {
1366 unsigned int bits = 14 - e;
1367 unsigned int half = (1 << (bits - 1)) - 1;
1368 unsigned int even = (m >> bits) & 1;
1369
1370 /* if this overflows, we will end up with a normalised number */
1371 m = (m + half + even) >> bits;
1372 }
1373
1374 return s | m;
1375 }
1376
1377 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1378 m >>= 13;
1379
1380 return s | 0x7c00 | m | !m;
1381}
1382
1383/*******************************************************************************/
1384/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1385
1386/* basically, everything uses "ieee pure-endian" floating point numbers */
1387/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1388#if 0 \
1389 || __i386 || __i386__ \
1390 || ECB_GCC_AMD64 \
1391 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1392 || defined __s390__ || defined __s390x__ \
1393 || defined __mips__ \
1394 || defined __alpha__ \
1395 || defined __hppa__ \
1396 || defined __ia64__ \
1397 || defined __m68k__ \
1398 || defined __m88k__ \
1399 || defined __sh__ \
1400 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1401 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1402 || defined __aarch64__
1403 #define ECB_STDFP 1
1404 #include <string.h> /* for memcpy */
1405#else
1406 #define ECB_STDFP 0
1407#endif
1408
1409#ifndef ECB_NO_LIBM
1410
1411 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1412
1413 /* only the oldest of old doesn't have this one. solaris. */
1414 #ifdef INFINITY
1415 #define ECB_INFINITY INFINITY
1416 #else
1417 #define ECB_INFINITY HUGE_VAL
1418 #endif
1419
1420 #ifdef NAN
1421 #define ECB_NAN NAN
1422 #else
1423 #define ECB_NAN ECB_INFINITY
1424 #endif
1425
1426 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1427 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1428 #define ecb_frexpf(x,e) frexpf ((x), (e))
1429 #else
1430 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1431 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1432 #endif
1433
1434 /* convert a float to ieee single/binary32 */
1435 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1436 ecb_function_ ecb_const uint32_t
1437 ecb_float_to_binary32 (float x)
1438 {
1439 uint32_t r;
1440
1441 #if ECB_STDFP
1442 memcpy (&r, &x, 4);
1443 #else
1444 /* slow emulation, works for anything but -0 */
1445 uint32_t m;
1446 int e;
1447
1448 if (x == 0e0f ) return 0x00000000U;
1449 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1450 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1451 if (x != x ) return 0x7fbfffffU;
1452
1453 m = ecb_frexpf (x, &e) * 0x1000000U;
1454
1455 r = m & 0x80000000U;
1456
1457 if (r)
1458 m = -m;
1459
1460 if (e <= -126)
1461 {
1462 m &= 0xffffffU;
1463 m >>= (-125 - e);
1464 e = -126;
1465 }
1466
1467 r |= (e + 126) << 23;
1468 r |= m & 0x7fffffU;
1469 #endif
1470
1471 return r;
1472 }
1473
1474 /* converts an ieee single/binary32 to a float */
1475 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1476 ecb_function_ ecb_const float
1477 ecb_binary32_to_float (uint32_t x)
1478 {
1479 float r;
1480
1481 #if ECB_STDFP
1482 memcpy (&r, &x, 4);
1483 #else
1484 /* emulation, only works for normals and subnormals and +0 */
1485 int neg = x >> 31;
1486 int e = (x >> 23) & 0xffU;
1487
1488 x &= 0x7fffffU;
1489
1490 if (e)
1491 x |= 0x800000U;
1492 else
1493 e = 1;
1494
1495 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1496 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1497
1498 r = neg ? -r : r;
1499 #endif
1500
1501 return r;
1502 }
1503
1504 /* convert a double to ieee double/binary64 */
1505 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1506 ecb_function_ ecb_const uint64_t
1507 ecb_double_to_binary64 (double x)
1508 {
1509 uint64_t r;
1510
1511 #if ECB_STDFP
1512 memcpy (&r, &x, 8);
1513 #else
1514 /* slow emulation, works for anything but -0 */
1515 uint64_t m;
1516 int e;
1517
1518 if (x == 0e0 ) return 0x0000000000000000U;
1519 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1520 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1521 if (x != x ) return 0X7ff7ffffffffffffU;
1522
1523 m = frexp (x, &e) * 0x20000000000000U;
1524
1525 r = m & 0x8000000000000000;;
1526
1527 if (r)
1528 m = -m;
1529
1530 if (e <= -1022)
1531 {
1532 m &= 0x1fffffffffffffU;
1533 m >>= (-1021 - e);
1534 e = -1022;
1535 }
1536
1537 r |= ((uint64_t)(e + 1022)) << 52;
1538 r |= m & 0xfffffffffffffU;
1539 #endif
1540
1541 return r;
1542 }
1543
1544 /* converts an ieee double/binary64 to a double */
1545 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1546 ecb_function_ ecb_const double
1547 ecb_binary64_to_double (uint64_t x)
1548 {
1549 double r;
1550
1551 #if ECB_STDFP
1552 memcpy (&r, &x, 8);
1553 #else
1554 /* emulation, only works for normals and subnormals and +0 */
1555 int neg = x >> 63;
1556 int e = (x >> 52) & 0x7ffU;
1557
1558 x &= 0xfffffffffffffU;
1559
1560 if (e)
1561 x |= 0x10000000000000U;
1562 else
1563 e = 1;
1564
1565 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1566 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1567
1568 r = neg ? -r : r;
1569 #endif
1570
1571 return r;
1572 }
1573
1574 /* convert a float to ieee half/binary16 */
1575 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1576 ecb_function_ ecb_const uint16_t
1577 ecb_float_to_binary16 (float x)
1578 {
1579 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1580 }
1581
1582 /* convert an ieee half/binary16 to float */
1583 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1584 ecb_function_ ecb_const float
1585 ecb_binary16_to_float (uint16_t x)
1586 {
1587 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1588 }
1589
1590#endif
1591
847#endif 1592#endif
848 1593
849/* ECB.H END */ 1594/* ECB.H END */
850 1595
851#define expect_false(cond) ecb_expect_false (cond) 1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
852#define expect_true(cond) ecb_expect_true (cond) 1597/* if your architecture doesn't need memory fences, e.g. because it is
853#define noinline ecb_noinline 1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1600 * libev, in which cases the memory fences become nops.
1601 * alternatively, you can remove this #error and link against libpthread,
1602 * which will then provide the memory fences.
1603 */
1604# error "memory fences not defined for your architecture, please report"
1605#endif
1606
1607#ifndef ECB_MEMORY_FENCE
1608# define ECB_MEMORY_FENCE do { } while (0)
1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1611#endif
854 1612
855#define inline_size ecb_inline 1613#define inline_size ecb_inline
856 1614
857#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
858# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
859#else 1617#else
860# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
861#endif 1619#endif
1620
1621/*****************************************************************************/
1622/* raw syscall wrappers */
1623
1624#if EV_NEED_SYSCALL
1625
1626#include <sys/syscall.h>
1627
1628/*
1629 * define some syscall wrappers for common architectures
1630 * this is mostly for nice looks during debugging, not performance.
1631 * our syscalls return < 0, not == -1, on error. which is good
1632 * enough for linux aio.
1633 * TODO: arm is also common nowadays, maybe even mips and x86
1634 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1635 */
1636#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1637 /* the costly errno access probably kills this for size optimisation */
1638
1639 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1640 ({ \
1641 long res; \
1642 register unsigned long r6 __asm__ ("r9" ); \
1643 register unsigned long r5 __asm__ ("r8" ); \
1644 register unsigned long r4 __asm__ ("r10"); \
1645 register unsigned long r3 __asm__ ("rdx"); \
1646 register unsigned long r2 __asm__ ("rsi"); \
1647 register unsigned long r1 __asm__ ("rdi"); \
1648 if (narg >= 6) r6 = (unsigned long)(arg6); \
1649 if (narg >= 5) r5 = (unsigned long)(arg5); \
1650 if (narg >= 4) r4 = (unsigned long)(arg4); \
1651 if (narg >= 3) r3 = (unsigned long)(arg3); \
1652 if (narg >= 2) r2 = (unsigned long)(arg2); \
1653 if (narg >= 1) r1 = (unsigned long)(arg1); \
1654 __asm__ __volatile__ ( \
1655 "syscall\n\t" \
1656 : "=a" (res) \
1657 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1658 : "cc", "r11", "cx", "memory"); \
1659 errno = -res; \
1660 res; \
1661 })
1662
1663#endif
1664
1665#ifdef ev_syscall
1666 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1667 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1668 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1669 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1670 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1671 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1672 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1673#else
1674 #define ev_syscall0(nr) syscall (nr)
1675 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1676 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1677 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1678 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1679 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1680 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1681#endif
1682
1683#endif
1684
1685/*****************************************************************************/
862 1686
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864 1688
865#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
866# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
867#else 1691#else
868# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
869#endif 1693#endif
870 1694
871#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
872#define EMPTY2(a,b) /* used to suppress some warnings */
873 1696
874typedef ev_watcher *W; 1697typedef ev_watcher *W;
875typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
876typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
877 1700
… …
902# include "ev_win32.c" 1725# include "ev_win32.c"
903#endif 1726#endif
904 1727
905/*****************************************************************************/ 1728/*****************************************************************************/
906 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
907/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
908 1735
909#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
910# include <math.h> 1737# include <math.h>
911# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
912#else 1739#else
913 1740
914#include <float.h> 1741#include <float.h>
915 1742
916/* a floor() replacement function, should be independent of ev_tstamp type */ 1743/* a floor() replacement function, should be independent of ev_tstamp type */
1744ecb_noinline
917static ev_tstamp noinline 1745static ev_tstamp
918ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
919{ 1747{
920 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
923#else 1751#else
924 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
925#endif 1753#endif
926 1754
1755 /* special treatment for negative arguments */
1756 if (ecb_expect_false (v < 0.))
1757 {
1758 ev_tstamp f = -ev_floor (-v);
1759
1760 return f - (f == v ? 0 : 1);
1761 }
1762
927 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
928 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
929 { 1765 {
930 ev_tstamp f; 1766 ev_tstamp f;
931 1767
932 if (v == v - 1.) 1768 if (v == v - 1.)
933 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
934 1770
935 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
936 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
937 } 1773 }
938 1774
939 /* special treatment for negative args? */
940 if (expect_false (v < 0.))
941 {
942 ev_tstamp f = -ev_floor (-v);
943
944 return f - (f == v ? 0 : 1);
945 }
946
947 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
948 return (unsigned long)v; 1776 return (unsigned long)v;
949} 1777}
950 1778
951#endif 1779#endif
… …
954 1782
955#ifdef __linux 1783#ifdef __linux
956# include <sys/utsname.h> 1784# include <sys/utsname.h>
957#endif 1785#endif
958 1786
959static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
960ev_linux_version (void) 1789ev_linux_version (void)
961{ 1790{
962#ifdef __linux 1791#ifdef __linux
963 unsigned int v = 0; 1792 unsigned int v = 0;
964 struct utsname buf; 1793 struct utsname buf;
… …
993} 1822}
994 1823
995/*****************************************************************************/ 1824/*****************************************************************************/
996 1825
997#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
998static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
999ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
1000{ 1830{
1001 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
1002} 1832}
1003#endif 1833#endif
1004 1834
1005static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1006 1836
1007void ecb_cold 1837ecb_cold
1838void
1008ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1009{ 1840{
1010 syserr_cb = cb; 1841 syserr_cb = cb;
1011} 1842}
1012 1843
1013static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
1014ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
1015{ 1847{
1016 if (!msg) 1848 if (!msg)
1017 msg = "(libev) system error"; 1849 msg = "(libev) system error";
1018 1850
… …
1031 abort (); 1863 abort ();
1032 } 1864 }
1033} 1865}
1034 1866
1035static void * 1867static void *
1036ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1037{ 1869{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
1041 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
1042 * implement realloc (x, 0) (as required by both ansi c-89 and 1871 * implement realloc (x, 0) (as required by both ansi c-89 and
1043 * the single unix specification, so work around them here. 1872 * the single unix specification, so work around them here.
1873 * recently, also (at least) fedora and debian started breaking it,
1874 * despite documenting it otherwise.
1044 */ 1875 */
1045 1876
1046 if (size) 1877 if (size)
1047 return realloc (ptr, size); 1878 return realloc (ptr, size);
1048 1879
1049 free (ptr); 1880 free (ptr);
1050 return 0; 1881 return 0;
1051#endif
1052} 1882}
1053 1883
1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1055 1885
1056void ecb_cold 1886ecb_cold
1887void
1057ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1058{ 1889{
1059 alloc = cb; 1890 alloc = cb;
1060} 1891}
1061 1892
1062inline_speed void * 1893inline_speed void *
… …
1089typedef struct 1920typedef struct
1090{ 1921{
1091 WL head; 1922 WL head;
1092 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
1093 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1925 unsigned char emask; /* some backends store the actual kernel mask in here */
1095 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
1096#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
1097 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
1098#endif 1929#endif
1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1100 SOCKET handle; 1931 SOCKET handle;
… …
1150 #undef VAR 1981 #undef VAR
1151 }; 1982 };
1152 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
1153 1984
1154 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
1155 struct ev_loop *ev_default_loop_ptr; 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1156 1987
1157#else 1988#else
1158 1989
1159 ev_tstamp ev_rt_now; 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1160 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
1161 #include "ev_vars.h" 1992 #include "ev_vars.h"
1162 #undef VAR 1993 #undef VAR
1163 1994
1164 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
1165 1996
1166#endif 1997#endif
1167 1998
1168#if EV_FEATURE_API 1999#if EV_FEATURE_API
1169# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1170# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1171# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
1172#else 2003#else
1173# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
1174# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
1175# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1179 2010
1180/*****************************************************************************/ 2011/*****************************************************************************/
1181 2012
1182#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
1183ev_tstamp 2014ev_tstamp
1184ev_time (void) 2015ev_time (void) EV_NOEXCEPT
1185{ 2016{
1186#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
1187 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
1188 { 2019 {
1189 struct timespec ts; 2020 struct timespec ts;
1190 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
1191 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
1192 } 2023 }
1193#endif 2024#endif
1194 2025
2026 {
1195 struct timeval tv; 2027 struct timeval tv;
1196 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
1197 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
1198} 2031}
1199#endif 2032#endif
1200 2033
1201inline_size ev_tstamp 2034inline_size ev_tstamp
1202get_clock (void) 2035get_clock (void)
1203{ 2036{
1204#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
1205 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
1206 { 2039 {
1207 struct timespec ts; 2040 struct timespec ts;
1208 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
1209 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
1210 } 2043 }
1211#endif 2044#endif
1212 2045
1213 return ev_time (); 2046 return ev_time ();
1214} 2047}
1215 2048
1216#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
1217ev_tstamp 2050ev_tstamp
1218ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
1219{ 2052{
1220 return ev_rt_now; 2053 return ev_rt_now;
1221} 2054}
1222#endif 2055#endif
1223 2056
1224void 2057void
1225ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1226{ 2059{
1227 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
1228 { 2061 {
1229#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
1230 struct timespec ts; 2063 struct timespec ts;
1231 2064
1232 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
1233 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
1234#elif defined(_WIN32) 2067#elif defined _WIN32
2068 /* maybe this should round up, as ms is very low resolution */
2069 /* compared to select (µs) or nanosleep (ns) */
1235 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1236#else 2071#else
1237 struct timeval tv; 2072 struct timeval tv;
1238 2073
1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2074 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1240 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1258 2093
1259 do 2094 do
1260 ncur <<= 1; 2095 ncur <<= 1;
1261 while (cnt > ncur); 2096 while (cnt > ncur);
1262 2097
1263 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2098 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1264 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1265 { 2100 {
1266 ncur *= elem; 2101 ncur *= elem;
1267 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2102 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1268 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
1270 } 2105 }
1271 2106
1272 return ncur; 2107 return ncur;
1273} 2108}
1274 2109
1275static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
1276array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
1277{ 2113{
1278 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1279 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1280} 2116}
1281 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1282#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1283 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1284 2122
1285#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1286 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1287 { \ 2125 { \
1288 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1289 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1290 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1291 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1292 } 2130 }
1293 2131
1294#if 0 2132#if 0
1295#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1296 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1306 2144
1307/*****************************************************************************/ 2145/*****************************************************************************/
1308 2146
1309/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1310static void noinline 2148ecb_noinline
2149static void
1311pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1312{ 2151{
1313} 2152}
1314 2153
1315void noinline 2154ecb_noinline
2155void
1316ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1317{ 2157{
1318 W w_ = (W)w; 2158 W w_ = (W)w;
1319 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1320 2160
1321 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1322 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1323 else 2163 else
1324 { 2164 {
1325 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1326 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1327 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1328 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1329 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
1330} 2172}
1331 2173
1332inline_speed void 2174inline_speed void
1333feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1334{ 2176{
1335 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1336 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1337} 2179}
1338 2180
1339inline_size void 2181inline_size void
1340feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1375inline_speed void 2217inline_speed void
1376fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1377{ 2219{
1378 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1379 2221
1380 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1382} 2224}
1383 2225
1384void 2226void
1385ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1386{ 2228{
1387 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1388 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1389} 2231}
1390 2232
… …
1427 ev_io *w; 2269 ev_io *w;
1428 2270
1429 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1430 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1431 2273
1432 anfd->reify = 0; 2274 anfd->reify = 0;
1433 2275
1434 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1435 { 2277 {
1436 anfd->events = 0; 2278 anfd->events = 0;
1437 2279
1438 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1439 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1448 2290
1449 fdchangecnt = 0; 2291 fdchangecnt = 0;
1450} 2292}
1451 2293
1452/* something about the given fd changed */ 2294/* something about the given fd changed */
1453inline_size void 2295inline_size
2296void
1454fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1455{ 2298{
1456 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1457 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1458 2301
1459 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1460 { 2303 {
1461 ++fdchangecnt; 2304 ++fdchangecnt;
1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1463 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1464 } 2307 }
1465} 2308}
1466 2309
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2310/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1468inline_speed void ecb_cold 2311inline_speed ecb_cold void
1469fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1470{ 2313{
1471 ev_io *w; 2314 ev_io *w;
1472 2315
1473 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2319 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1477 } 2320 }
1478} 2321}
1479 2322
1480/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1481inline_size int ecb_cold 2324inline_size ecb_cold int
1482fd_valid (int fd) 2325fd_valid (int fd)
1483{ 2326{
1484#ifdef _WIN32 2327#ifdef _WIN32
1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1486#else 2329#else
1487 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1488#endif 2331#endif
1489} 2332}
1490 2333
1491/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1492static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1493fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1494{ 2338{
1495 int fd; 2339 int fd;
1496 2340
1497 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1499 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1500 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1501} 2345}
1502 2346
1503/* called on ENOMEM in select/poll to kill some fds and retry */ 2347/* called on ENOMEM in select/poll to kill some fds and retry */
1504static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1505fd_enomem (EV_P) 2350fd_enomem (EV_P)
1506{ 2351{
1507 int fd; 2352 int fd;
1508 2353
1509 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1513 break; 2358 break;
1514 } 2359 }
1515} 2360}
1516 2361
1517/* usually called after fork if backend needs to re-arm all fds from scratch */ 2362/* usually called after fork if backend needs to re-arm all fds from scratch */
1518static void noinline 2363ecb_noinline
2364static void
1519fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1520{ 2366{
1521 int fd; 2367 int fd;
1522 2368
1523 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1576 ev_tstamp minat; 2422 ev_tstamp minat;
1577 ANHE *minpos; 2423 ANHE *minpos;
1578 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1579 2425
1580 /* find minimum child */ 2426 /* find minimum child */
1581 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1582 { 2428 {
1583 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1584 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2430 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1585 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2431 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1586 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2432 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1587 } 2433 }
1588 else if (pos < E) 2434 else if (pos < E)
1589 { 2435 {
1590 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1591 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1592 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1593 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1594 } 2440 }
1595 else 2441 else
1596 break; 2442 break;
1597 2443
1598 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1606 2452
1607 heap [k] = he; 2453 heap [k] = he;
1608 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1609} 2455}
1610 2456
1611#else /* 4HEAP */ 2457#else /* not 4HEAP */
1612 2458
1613#define HEAP0 1 2459#define HEAP0 1
1614#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1615#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1616 2462
… …
1704 2550
1705/*****************************************************************************/ 2551/*****************************************************************************/
1706 2552
1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1708 2554
1709static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1710evpipe_init (EV_P) 2557evpipe_init (EV_P)
1711{ 2558{
1712 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1713 { 2560 {
2561 int fds [2];
2562
1714# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1717 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1718 2568
1719 if (evfd >= 0) 2569 if (fds [1] < 0)
2570# endif
1720 { 2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
1721 evpipe [0] = -1; 2578 evpipe [0] = fds [0];
1722 fd_intern (evfd); /* doing it twice doesn't hurt */ 2579
1723 ev_io_set (&pipe_w, evfd, EV_READ); 2580 if (evpipe [1] < 0)
2581 evpipe [1] = fds [1]; /* first call, set write fd */
2582 else
2583 {
2584 /* on subsequent calls, do not change evpipe [1] */
2585 /* so that evpipe_write can always rely on its value. */
2586 /* this branch does not do anything sensible on windows, */
2587 /* so must not be executed on windows */
2588
2589 dup2 (fds [1], evpipe [1]);
2590 close (fds [1]);
2591 }
2592
2593 fd_intern (evpipe [1]);
2594
2595 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2596 ev_io_start (EV_A_ &pipe_w);
2597 ev_unref (EV_A); /* watcher should not keep loop alive */
2598 }
2599}
2600
2601inline_speed void
2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2603{
2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2605
2606 if (ecb_expect_true (*flag))
2607 return;
2608
2609 *flag = 1;
2610 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2611
2612 pipe_write_skipped = 1;
2613
2614 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2615
2616 if (pipe_write_wanted)
2617 {
2618 int old_errno;
2619
2620 pipe_write_skipped = 0;
2621 ECB_MEMORY_FENCE_RELEASE;
2622
2623 old_errno = errno; /* save errno because write will clobber it */
2624
2625#if EV_USE_EVENTFD
2626 if (evpipe [0] < 0)
2627 {
2628 uint64_t counter = 1;
2629 write (evpipe [1], &counter, sizeof (uint64_t));
1724 } 2630 }
1725 else 2631 else
1726# endif 2632#endif
1727 { 2633 {
1728 while (pipe (evpipe)) 2634#ifdef _WIN32
1729 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1730 2636 DWORD sent;
1731 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1732 fd_intern (evpipe [1]); 2638 buf.len = 1;
1733 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1734 } 2640#else
1735
1736 ev_io_start (EV_A_ &pipe_w);
1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1738 }
1739}
1740
1741inline_speed void
1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1743{
1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1761 old_errno = errno; /* save errno because write will clobber it */
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 {
1766 uint64_t counter = 1;
1767 write (evfd, &counter, sizeof (uint64_t));
1768 }
1769 else
1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1777 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1778 } 2643 }
1779 2644
1780 errno = old_errno; 2645 errno = old_errno;
1781 } 2646 }
1782} 2647}
… …
1789 int i; 2654 int i;
1790 2655
1791 if (revents & EV_READ) 2656 if (revents & EV_READ)
1792 { 2657 {
1793#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1794 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1795 { 2660 {
1796 uint64_t counter; 2661 uint64_t counter;
1797 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1798 } 2663 }
1799 else 2664 else
1800#endif 2665#endif
1801 { 2666 {
1802 char dummy; 2667 char dummy[4];
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2668#ifdef _WIN32
2669 WSABUF buf;
2670 DWORD recvd;
2671 DWORD flags = 0;
2672 buf.buf = dummy;
2673 buf.len = sizeof (dummy);
2674 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2675#else
1804 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
1805 } 2678 }
1806 } 2679 }
1807 2680
1808 pipe_write_skipped = 0; 2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1809 2684
1810#if EV_SIGNAL_ENABLE 2685#if EV_SIGNAL_ENABLE
1811 if (sig_pending) 2686 if (sig_pending)
1812 { 2687 {
1813 sig_pending = 0; 2688 sig_pending = 0;
1814 2689
2690 ECB_MEMORY_FENCE;
2691
1815 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1816 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1817 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1818 } 2695 }
1819#endif 2696#endif
1820 2697
1821#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1822 if (async_pending) 2699 if (async_pending)
1823 { 2700 {
1824 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1825 2704
1826 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1827 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1828 { 2707 {
1829 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1830 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1831 } 2711 }
1832 } 2712 }
1833#endif 2713#endif
1834} 2714}
1835 2715
1836/*****************************************************************************/ 2716/*****************************************************************************/
1837 2717
1838void 2718void
1839ev_feed_signal (int signum) 2719ev_feed_signal (int signum) EV_NOEXCEPT
1840{ 2720{
1841#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
1842 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
1843 2725
1844 if (!EV_A) 2726 if (!EV_A)
1845 return; 2727 return;
1846#endif 2728#endif
1847 2729
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
1853} 2732}
1854 2733
1855static void 2734static void
… …
1860#endif 2739#endif
1861 2740
1862 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
1863} 2742}
1864 2743
1865void noinline 2744ecb_noinline
2745void
1866ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1867{ 2747{
1868 WL w; 2748 WL w;
1869 2749
1870 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1871 return; 2751 return;
1872 2752
1873 --signum; 2753 --signum;
1874 2754
1875#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1876 /* it is permissible to try to feed a signal to the wrong loop */ 2756 /* it is permissible to try to feed a signal to the wrong loop */
1877 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1878 2758
1879 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1880 return; 2760 return;
1881#endif 2761#endif
1882 2762
1883 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1884 2765
1885 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1887} 2768}
1888 2769
… …
1979# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1980#endif 2861#endif
1981#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1982# include "ev_epoll.c" 2863# include "ev_epoll.c"
1983#endif 2864#endif
2865#if EV_USE_LINUXAIO
2866# include "ev_linuxaio.c"
2867#endif
2868#if EV_USE_IOURING
2869# include "ev_iouring.c"
2870#endif
1984#if EV_USE_POLL 2871#if EV_USE_POLL
1985# include "ev_poll.c" 2872# include "ev_poll.c"
1986#endif 2873#endif
1987#if EV_USE_SELECT 2874#if EV_USE_SELECT
1988# include "ev_select.c" 2875# include "ev_select.c"
1989#endif 2876#endif
1990 2877
1991int ecb_cold 2878ecb_cold int
1992ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1993{ 2880{
1994 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1995} 2882}
1996 2883
1997int ecb_cold 2884ecb_cold int
1998ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1999{ 2886{
2000 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
2001} 2888}
2002 2889
2003/* return true if we are running with elevated privileges and should ignore env variables */ 2890/* return true if we are running with elevated privileges and should ignore env variables */
2004int inline_size ecb_cold 2891inline_size ecb_cold int
2005enable_secure (void) 2892enable_secure (void)
2006{ 2893{
2007#ifdef _WIN32 2894#ifdef _WIN32
2008 return 0; 2895 return 0;
2009#else 2896#else
2010 return getuid () != geteuid () 2897 return getuid () != geteuid ()
2011 || getgid () != getegid (); 2898 || getgid () != getegid ();
2012#endif 2899#endif
2013} 2900}
2014 2901
2015unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2016ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
2017{ 2905{
2018 unsigned int flags = 0; 2906 unsigned int flags = 0;
2019 2907
2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2021 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2022 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2910 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2911 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2912 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2023 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2025 2915
2026 return flags; 2916 return flags;
2027} 2917}
2028 2918
2029unsigned int ecb_cold 2919ecb_cold
2920unsigned int
2030ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
2031{ 2922{
2032 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
2033 2924
2034#ifndef __NetBSD__ 2925#ifndef __NetBSD__
2035 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
2043#endif 2934#endif
2044#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
2045 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2936 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2046#endif 2937#endif
2047 2938
2939 /* TODO: linuxaio is very experimental */
2940#if !EV_RECOMMEND_LINUXAIO
2941 flags &= ~EVBACKEND_LINUXAIO;
2942#endif
2943 /* TODO: linuxaio is super experimental */
2944#if !EV_RECOMMEND_IOURING
2945 flags &= ~EVBACKEND_IOURING;
2946#endif
2947
2048 return flags; 2948 return flags;
2049} 2949}
2050 2950
2051unsigned int ecb_cold 2951ecb_cold
2952unsigned int
2052ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
2053{ 2954{
2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2055 2956
2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2957 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2058 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2059 2960
2961 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2962
2963 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2964 * because our backend_fd is the epoll fd we need as fallback.
2965 * if the kernel ever is fixed, this might change...
2966 */
2967
2060 return flags; 2968 return flags;
2061} 2969}
2062 2970
2063unsigned int 2971unsigned int
2064ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
2065{ 2973{
2066 return backend; 2974 return backend;
2067} 2975}
2068 2976
2069#if EV_FEATURE_API 2977#if EV_FEATURE_API
2070unsigned int 2978unsigned int
2071ev_iteration (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
2072{ 2980{
2073 return loop_count; 2981 return loop_count;
2074} 2982}
2075 2983
2076unsigned int 2984unsigned int
2077ev_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
2078{ 2986{
2079 return loop_depth; 2987 return loop_depth;
2080} 2988}
2081 2989
2082void 2990void
2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2084{ 2992{
2085 io_blocktime = interval; 2993 io_blocktime = interval;
2086} 2994}
2087 2995
2088void 2996void
2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2090{ 2998{
2091 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
2092} 3000}
2093 3001
2094void 3002void
2095ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2096{ 3004{
2097 userdata = data; 3005 userdata = data;
2098} 3006}
2099 3007
2100void * 3008void *
2101ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
2102{ 3010{
2103 return userdata; 3011 return userdata;
2104} 3012}
2105 3013
2106void 3014void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2108{ 3016{
2109 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
2110} 3018}
2111 3019
2112void 3020void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2114{ 3022{
2115 release_cb = release; 3023 release_cb = release;
2116 acquire_cb = acquire; 3024 acquire_cb = acquire;
2117} 3025}
2118#endif 3026#endif
2119 3027
2120/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
2121static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
2122loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2123{ 3032{
2124 if (!backend) 3033 if (!backend)
2125 { 3034 {
2126 origflags = flags; 3035 origflags = flags;
2127 3036
… …
2172#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
2173 async_pending = 0; 3082 async_pending = 0;
2174#endif 3083#endif
2175 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
2177#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif 3090#endif
2180#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2183 3094
2184 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
2185 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
2186 3097
2187#if EV_USE_IOCP 3098#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif 3100#endif
2190#if EV_USE_PORT 3101#if EV_USE_PORT
2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2192#endif 3103#endif
2193#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3105 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3106#endif
3107#if EV_USE_IOURING
3108 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3109#endif
3110#if EV_USE_LINUXAIO
3111 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2195#endif 3112#endif
2196#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
2197 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2198#endif 3115#endif
2199#if EV_USE_POLL 3116#if EV_USE_POLL
2200 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2201#endif 3118#endif
2202#if EV_USE_SELECT 3119#if EV_USE_SELECT
2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2204#endif 3121#endif
2205 3122
2206 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
2207 3124
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2211#endif 3128#endif
2212 } 3129 }
2213} 3130}
2214 3131
2215/* free up a loop structure */ 3132/* free up a loop structure */
2216void ecb_cold 3133ecb_cold
3134void
2217ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
2218{ 3136{
2219 int i; 3137 int i;
2220 3138
2221#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
2224 return; 3142 return;
2225#endif 3143#endif
2226 3144
2227#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
2228 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
2229 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
2230 { 3148 {
2231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2232 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
2233 } 3151 }
2234#endif 3152#endif
2235 3153
2236#if EV_CHILD_ENABLE 3154#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev)) 3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2238 { 3156 {
2239 ev_ref (EV_A); /* child watcher */ 3157 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev); 3158 ev_signal_stop (EV_A_ &childev);
2241 } 3159 }
2242#endif 3160#endif
… …
2244 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
2245 { 3163 {
2246 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
2247 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
2248 3166
2249#if EV_USE_EVENTFD
2250 if (evfd >= 0)
2251 close (evfd);
2252#endif
2253
2254 if (evpipe [0] >= 0)
2255 {
2256 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2257 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2258 }
2259 } 3169 }
2260 3170
2261#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
2263 close (sigfd); 3173 close (sigfd);
… …
2270 3180
2271 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
2272 close (backend_fd); 3182 close (backend_fd);
2273 3183
2274#if EV_USE_IOCP 3184#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif 3186#endif
2277#if EV_USE_PORT 3187#if EV_USE_PORT
2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2279#endif 3189#endif
2280#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3191 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3192#endif
3193#if EV_USE_IOURING
3194 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3195#endif
3196#if EV_USE_LINUXAIO
3197 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2282#endif 3198#endif
2283#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2284 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2285#endif 3201#endif
2286#if EV_USE_POLL 3202#if EV_USE_POLL
2287 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2288#endif 3204#endif
2289#if EV_USE_SELECT 3205#if EV_USE_SELECT
2290 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2291#endif 3207#endif
2292 3208
2293 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2294 { 3210 {
2295 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2337 3253
2338inline_size void 3254inline_size void
2339loop_fork (EV_P) 3255loop_fork (EV_P)
2340{ 3256{
2341#if EV_USE_PORT 3257#if EV_USE_PORT
2342 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2343#endif 3259#endif
2344#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2345 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3261 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3262#endif
3263#if EV_USE_IOURING
3264 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3265#endif
3266#if EV_USE_LINUXAIO
3267 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2346#endif 3268#endif
2347#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2348 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2349#endif 3271#endif
2350#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2351 infy_fork (EV_A); 3273 infy_fork (EV_A);
2352#endif 3274#endif
2353 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2354 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2355 { 3278 {
2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2357 3280
2358 ev_ref (EV_A); 3281 ev_ref (EV_A);
2359 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2360 3283
2361#if EV_USE_EVENTFD
2362 if (evfd >= 0)
2363 close (evfd);
2364#endif
2365
2366 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2367 {
2368 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2369 EV_WIN32_CLOSE_FD (evpipe [1]);
2370 }
2371 3286
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2373 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2374 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2375 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2376#endif
2377 } 3290 }
3291#endif
2378 3292
2379 postfork = 0; 3293 postfork = 0;
2380} 3294}
2381 3295
2382#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2383 3297
3298ecb_cold
2384struct ev_loop * ecb_cold 3299struct ev_loop *
2385ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2386{ 3301{
2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2388 3303
2389 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2390 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2397} 3312}
2398 3313
2399#endif /* multiplicity */ 3314#endif /* multiplicity */
2400 3315
2401#if EV_VERIFY 3316#if EV_VERIFY
2402static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2403verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2404{ 3320{
2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3321 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2406 3322
2407 if (w->pending) 3323 if (w->pending)
2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3324 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2409} 3325}
2410 3326
2411static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2412verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2413{ 3330{
2414 int i; 3331 int i;
2415 3332
2416 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2421 3338
2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2423 } 3340 }
2424} 3341}
2425 3342
2426static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2427array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2428{ 3346{
2429 while (cnt--) 3347 while (cnt--)
2430 { 3348 {
2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2434} 3352}
2435#endif 3353#endif
2436 3354
2437#if EV_FEATURE_API 3355#if EV_FEATURE_API
2438void ecb_cold 3356void ecb_cold
2439ev_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
2440{ 3358{
2441#if EV_VERIFY 3359#if EV_VERIFY
2442 int i; 3360 int i;
2443 WL w; 3361 WL w, w2;
2444 3362
2445 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
2446 3364
2447 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
2448 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
2449 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2450 3368
2451 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
2452 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
2453 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
2454 { 3375 {
2455 verify_watcher (EV_A_ (W)w); 3376 verify_watcher (EV_A_ (W)w);
3377
3378 if (j++ & 1)
3379 {
3380 assert (("libev: io watcher list contains a loop", w != w2));
3381 w2 = w2->next;
3382 }
3383
2456 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3384 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2457 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3385 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2458 } 3386 }
3387 }
2459 3388
2460 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
2461 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
2462 3391
2463#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
2509#endif 3438#endif
2510} 3439}
2511#endif 3440#endif
2512 3441
2513#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2514struct ev_loop * ecb_cold 3444struct ev_loop *
2515#else 3445#else
2516int 3446int
2517#endif 3447#endif
2518ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2519{ 3449{
2520 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2521 { 3451 {
2522#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2523 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2542 3472
2543 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2544} 3474}
2545 3475
2546void 3476void
2547ev_loop_fork (EV_P) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2548{ 3478{
2549 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2550} 3480}
2551 3481
2552/*****************************************************************************/ 3482/*****************************************************************************/
2553 3483
2554void 3484void
… …
2556{ 3486{
2557 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2558} 3488}
2559 3489
2560unsigned int 3490unsigned int
2561ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2562{ 3492{
2563 int pri; 3493 int pri;
2564 unsigned int count = 0; 3494 unsigned int count = 0;
2565 3495
2566 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2568 3498
2569 return count; 3499 return count;
2570} 3500}
2571 3501
2572void noinline 3502ecb_noinline
3503void
2573ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2574{ 3505{
2575 int pri; 3506 pendingpri = NUMPRI;
2576 3507
2577 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2578 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2579 { 3514 {
2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2581 3516
2582 p->w->pending = 0; 3517 p->w->pending = 0;
2583 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2584 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2585 } 3520 }
3521 }
3522 while (pendingpri);
2586} 3523}
2587 3524
2588#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2591inline_size void 3528inline_size void
2592idle_reify (EV_P) 3529idle_reify (EV_P)
2593{ 3530{
2594 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2595 { 3532 {
2596 int pri; 3533 int pri;
2597 3534
2598 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2599 { 3536 {
… …
2629 { 3566 {
2630 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2631 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2632 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2633 3570
2634 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3571 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2635 3572
2636 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2637 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2638 } 3575 }
2639 else 3576 else
… …
2648 } 3585 }
2649} 3586}
2650 3587
2651#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2652 3589
2653static void noinline 3590ecb_noinline
3591static void
2654periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2655{ 3593{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3595 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658 3596
… …
2660 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2661 { 3599 {
2662 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2663 3601
2664 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2665 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2666 { 3604 {
2667 at = ev_rt_now; 3605 at = ev_rt_now;
2668 break; 3606 break;
2669 } 3607 }
2670 3608
… …
2680{ 3618{
2681 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2682 3620
2683 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2684 { 3622 {
2685 int feed_count = 0;
2686
2687 do 3623 do
2688 { 3624 {
2689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2690 3626
2691 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3627 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2718 } 3654 }
2719} 3655}
2720 3656
2721/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3658/* TODO: maybe ensure that at least one event happens when jumping forward? */
2723static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2724periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2725{ 3662{
2726 int i; 3663 int i;
2727 3664
2728 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2741 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2742} 3679}
2743#endif 3680#endif
2744 3681
2745/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2746static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2747timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2748{ 3686{
2749 int i; 3687 int i;
2750 3688
2751 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2760/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2761inline_speed void 3699inline_speed void
2762time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2763{ 3701{
2764#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2765 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2766 { 3704 {
2767 int i; 3705 int i;
2768 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2769 3707
2770 mn_now = get_clock (); 3708 mn_now = get_clock ();
2771 3709
2772 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2773 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3712 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2775 { 3713 {
2776 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2777 return; 3715 return;
2778 } 3716 }
2779 3717
… …
2793 ev_tstamp diff; 3731 ev_tstamp diff;
2794 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2795 3733
2796 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2797 3735
2798 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3736 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2799 return; /* all is well */ 3737 return; /* all is well */
2800 3738
2801 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2802 mn_now = get_clock (); 3740 mn_now = get_clock ();
2803 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2812 else 3750 else
2813#endif 3751#endif
2814 { 3752 {
2815 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2816 3754
2817 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3755 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2818 { 3756 {
2819 /* adjust timers. this is easy, as the offset is the same for all of them */ 3757 /* adjust timers. this is easy, as the offset is the same for all of them */
2820 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2821#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2822 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2825 3763
2826 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2827 } 3765 }
2828} 3766}
2829 3767
2830void 3768int
2831ev_run (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2832{ 3770{
2833#if EV_FEATURE_API 3771#if EV_FEATURE_API
2834 ++loop_depth; 3772 ++loop_depth;
2835#endif 3773#endif
… …
2845#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2846 ev_verify (EV_A); 3784 ev_verify (EV_A);
2847#endif 3785#endif
2848 3786
2849#ifndef _WIN32 3787#ifndef _WIN32
2850 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2851 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2852 { 3790 {
2853 curpid = getpid (); 3791 curpid = getpid ();
2854 postfork = 1; 3792 postfork = 1;
2855 } 3793 }
2856#endif 3794#endif
2857 3795
2858#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2859 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2860 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2861 if (forkcnt) 3799 if (forkcnt)
2862 { 3800 {
2863 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2864 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2865 } 3803 }
2866#endif 3804#endif
2867 3805
2868#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
2869 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2870 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2871 { 3809 {
2872 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2873 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2874 } 3812 }
2875#endif 3813#endif
2876 3814
2877 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2878 break; 3816 break;
2879 3817
2880 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2881 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2882 loop_fork (EV_A); 3820 loop_fork (EV_A);
2883 3821
2884 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2885 fd_reify (EV_A); 3823 fd_reify (EV_A);
2886 3824
… …
2891 3829
2892 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
2893 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
2894 3832
2895 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
2896 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2897 3835
2898 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
2900 3838
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3839 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902 3840
2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2904 { 3842 {
2905 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2906 3844
2907 if (timercnt) 3845 if (timercnt)
2908 { 3846 {
2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2910 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
2917 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2918 } 3856 }
2919#endif 3857#endif
2920 3858
2921 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2922 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2923 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2924 3862
2925 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* at this point, we NEED to wait, so we have to ensure */
2926 /* to pass a minimum nonzero value to the backend */ 3864 /* to pass a minimum nonzero value to the backend */
2927 if (expect_false (waittime < backend_mintime)) 3865 if (ecb_expect_false (waittime < backend_mintime))
2928 waittime = backend_mintime; 3866 waittime = backend_mintime;
2929 3867
2930 /* extra check because io_blocktime is commonly 0 */ 3868 /* extra check because io_blocktime is commonly 0 */
2931 if (expect_false (io_blocktime)) 3869 if (ecb_expect_false (io_blocktime))
2932 { 3870 {
2933 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3871 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2934 3872
2935 if (sleeptime > waittime - backend_mintime) 3873 if (sleeptime > waittime - backend_mintime)
2936 sleeptime = waittime - backend_mintime; 3874 sleeptime = waittime - backend_mintime;
2937 3875
2938 if (expect_true (sleeptime > 0.)) 3876 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2939 { 3877 {
2940 ev_sleep (sleeptime); 3878 ev_sleep (sleeptime);
2941 waittime -= sleeptime; 3879 waittime -= sleeptime;
2942 } 3880 }
2943 } 3881 }
… …
2948#endif 3886#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3887 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2950 backend_poll (EV_A_ waittime); 3888 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3889 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952 3890
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3891 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2954 3892
3893 ECB_MEMORY_FENCE_ACQUIRE;
2955 if (pipe_write_skipped) 3894 if (pipe_write_skipped)
2956 { 3895 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3896 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3897 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 } 3898 }
2960 3899
2961
2962 /* update ev_rt_now, do magic */ 3900 /* update ev_rt_now, do magic */
2963 time_update (EV_A_ waittime + sleeptime); 3901 time_update (EV_A_ waittime + sleeptime);
2964 } 3902 }
2965 3903
2966 /* queue pending timers and reschedule them */ 3904 /* queue pending timers and reschedule them */
… …
2974 idle_reify (EV_A); 3912 idle_reify (EV_A);
2975#endif 3913#endif
2976 3914
2977#if EV_CHECK_ENABLE 3915#if EV_CHECK_ENABLE
2978 /* queue check watchers, to be executed first */ 3916 /* queue check watchers, to be executed first */
2979 if (expect_false (checkcnt)) 3917 if (ecb_expect_false (checkcnt))
2980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3918 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2981#endif 3919#endif
2982 3920
2983 EV_INVOKE_PENDING; 3921 EV_INVOKE_PENDING;
2984 } 3922 }
2985 while (expect_true ( 3923 while (ecb_expect_true (
2986 activecnt 3924 activecnt
2987 && !loop_done 3925 && !loop_done
2988 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3926 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2989 )); 3927 ));
2990 3928
… …
2992 loop_done = EVBREAK_CANCEL; 3930 loop_done = EVBREAK_CANCEL;
2993 3931
2994#if EV_FEATURE_API 3932#if EV_FEATURE_API
2995 --loop_depth; 3933 --loop_depth;
2996#endif 3934#endif
2997}
2998 3935
3936 return activecnt;
3937}
3938
2999void 3939void
3000ev_break (EV_P_ int how) 3940ev_break (EV_P_ int how) EV_NOEXCEPT
3001{ 3941{
3002 loop_done = how; 3942 loop_done = how;
3003} 3943}
3004 3944
3005void 3945void
3006ev_ref (EV_P) 3946ev_ref (EV_P) EV_NOEXCEPT
3007{ 3947{
3008 ++activecnt; 3948 ++activecnt;
3009} 3949}
3010 3950
3011void 3951void
3012ev_unref (EV_P) 3952ev_unref (EV_P) EV_NOEXCEPT
3013{ 3953{
3014 --activecnt; 3954 --activecnt;
3015} 3955}
3016 3956
3017void 3957void
3018ev_now_update (EV_P) 3958ev_now_update (EV_P) EV_NOEXCEPT
3019{ 3959{
3020 time_update (EV_A_ 1e100); 3960 time_update (EV_A_ EV_TSTAMP_HUGE);
3021} 3961}
3022 3962
3023void 3963void
3024ev_suspend (EV_P) 3964ev_suspend (EV_P) EV_NOEXCEPT
3025{ 3965{
3026 ev_now_update (EV_A); 3966 ev_now_update (EV_A);
3027} 3967}
3028 3968
3029void 3969void
3030ev_resume (EV_P) 3970ev_resume (EV_P) EV_NOEXCEPT
3031{ 3971{
3032 ev_tstamp mn_prev = mn_now; 3972 ev_tstamp mn_prev = mn_now;
3033 3973
3034 ev_now_update (EV_A); 3974 ev_now_update (EV_A);
3035 timers_reschedule (EV_A_ mn_now - mn_prev); 3975 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3052inline_size void 3992inline_size void
3053wlist_del (WL *head, WL elem) 3993wlist_del (WL *head, WL elem)
3054{ 3994{
3055 while (*head) 3995 while (*head)
3056 { 3996 {
3057 if (expect_true (*head == elem)) 3997 if (ecb_expect_true (*head == elem))
3058 { 3998 {
3059 *head = elem->next; 3999 *head = elem->next;
3060 break; 4000 break;
3061 } 4001 }
3062 4002
… …
3074 w->pending = 0; 4014 w->pending = 0;
3075 } 4015 }
3076} 4016}
3077 4017
3078int 4018int
3079ev_clear_pending (EV_P_ void *w) 4019ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3080{ 4020{
3081 W w_ = (W)w; 4021 W w_ = (W)w;
3082 int pending = w_->pending; 4022 int pending = w_->pending;
3083 4023
3084 if (expect_true (pending)) 4024 if (ecb_expect_true (pending))
3085 { 4025 {
3086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3087 p->w = (W)&pending_w; 4027 p->w = (W)&pending_w;
3088 w_->pending = 0; 4028 w_->pending = 0;
3089 return p->events; 4029 return p->events;
… …
3116 w->active = 0; 4056 w->active = 0;
3117} 4057}
3118 4058
3119/*****************************************************************************/ 4059/*****************************************************************************/
3120 4060
3121void noinline 4061ecb_noinline
4062void
3122ev_io_start (EV_P_ ev_io *w) 4063ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3123{ 4064{
3124 int fd = w->fd; 4065 int fd = w->fd;
3125 4066
3126 if (expect_false (ev_is_active (w))) 4067 if (ecb_expect_false (ev_is_active (w)))
3127 return; 4068 return;
3128 4069
3129 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4070 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4071 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3131 4072
4073#if EV_VERIFY >= 2
4074 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4075#endif
3132 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3133 4077
3134 ev_start (EV_A_ (W)w, 1); 4078 ev_start (EV_A_ (W)w, 1);
3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4079 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3136 wlist_add (&anfds[fd].head, (WL)w); 4080 wlist_add (&anfds[fd].head, (WL)w);
4081
4082 /* common bug, apparently */
4083 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3137 4084
3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4085 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3139 w->events &= ~EV__IOFDSET; 4086 w->events &= ~EV__IOFDSET;
3140 4087
3141 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3142} 4089}
3143 4090
3144void noinline 4091ecb_noinline
4092void
3145ev_io_stop (EV_P_ ev_io *w) 4093ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 4094{
3147 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3148 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
3149 return; 4097 return;
3150 4098
3151 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4099 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3152 4100
4101#if EV_VERIFY >= 2
4102 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4103#endif
3153 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
3154 4105
3155 wlist_del (&anfds[w->fd].head, (WL)w); 4106 wlist_del (&anfds[w->fd].head, (WL)w);
3156 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
3157 4108
3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4109 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3159 4110
3160 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
3161} 4112}
3162 4113
3163void noinline 4114ecb_noinline
4115void
3164ev_timer_start (EV_P_ ev_timer *w) 4116ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3165{ 4117{
3166 if (expect_false (ev_is_active (w))) 4118 if (ecb_expect_false (ev_is_active (w)))
3167 return; 4119 return;
3168 4120
3169 ev_at (w) += mn_now; 4121 ev_at (w) += mn_now;
3170 4122
3171 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4123 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3172 4124
3173 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3174 4126
3175 ++timercnt; 4127 ++timercnt;
3176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4128 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3177 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4129 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3178 ANHE_w (timers [ev_active (w)]) = (WT)w; 4130 ANHE_w (timers [ev_active (w)]) = (WT)w;
3179 ANHE_at_cache (timers [ev_active (w)]); 4131 ANHE_at_cache (timers [ev_active (w)]);
3180 upheap (timers, ev_active (w)); 4132 upheap (timers, ev_active (w));
3181 4133
3182 EV_FREQUENT_CHECK; 4134 EV_FREQUENT_CHECK;
3183 4135
3184 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4136 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3185} 4137}
3186 4138
3187void noinline 4139ecb_noinline
4140void
3188ev_timer_stop (EV_P_ ev_timer *w) 4141ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3189{ 4142{
3190 clear_pending (EV_A_ (W)w); 4143 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4144 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4145 return;
3193 4146
3194 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3195 4148
3196 { 4149 {
… …
3198 4151
3199 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4152 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3200 4153
3201 --timercnt; 4154 --timercnt;
3202 4155
3203 if (expect_true (active < timercnt + HEAP0)) 4156 if (ecb_expect_true (active < timercnt + HEAP0))
3204 { 4157 {
3205 timers [active] = timers [timercnt + HEAP0]; 4158 timers [active] = timers [timercnt + HEAP0];
3206 adjustheap (timers, timercnt, active); 4159 adjustheap (timers, timercnt, active);
3207 } 4160 }
3208 } 4161 }
… …
3212 ev_stop (EV_A_ (W)w); 4165 ev_stop (EV_A_ (W)w);
3213 4166
3214 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3215} 4168}
3216 4169
3217void noinline 4170ecb_noinline
4171void
3218ev_timer_again (EV_P_ ev_timer *w) 4172ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3219{ 4173{
3220 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
4175
4176 clear_pending (EV_A_ (W)w);
3221 4177
3222 if (ev_is_active (w)) 4178 if (ev_is_active (w))
3223 { 4179 {
3224 if (w->repeat) 4180 if (w->repeat)
3225 { 4181 {
… …
3238 4194
3239 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3240} 4196}
3241 4197
3242ev_tstamp 4198ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w) 4199ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3244{ 4200{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4201 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3246} 4202}
3247 4203
3248#if EV_PERIODIC_ENABLE 4204#if EV_PERIODIC_ENABLE
3249void noinline 4205ecb_noinline
4206void
3250ev_periodic_start (EV_P_ ev_periodic *w) 4207ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3251{ 4208{
3252 if (expect_false (ev_is_active (w))) 4209 if (ecb_expect_false (ev_is_active (w)))
3253 return; 4210 return;
3254 4211
3255 if (w->reschedule_cb) 4212 if (w->reschedule_cb)
3256 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3257 else if (w->interval) 4214 else if (w->interval)
… …
3264 4221
3265 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3266 4223
3267 ++periodiccnt; 4224 ++periodiccnt;
3268 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4225 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3269 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4226 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3270 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4227 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3271 ANHE_at_cache (periodics [ev_active (w)]); 4228 ANHE_at_cache (periodics [ev_active (w)]);
3272 upheap (periodics, ev_active (w)); 4229 upheap (periodics, ev_active (w));
3273 4230
3274 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3275 4232
3276 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4233 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3277} 4234}
3278 4235
3279void noinline 4236ecb_noinline
4237void
3280ev_periodic_stop (EV_P_ ev_periodic *w) 4238ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3281{ 4239{
3282 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4241 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4242 return;
3285 4243
3286 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3287 4245
3288 { 4246 {
… …
3290 4248
3291 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4249 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3292 4250
3293 --periodiccnt; 4251 --periodiccnt;
3294 4252
3295 if (expect_true (active < periodiccnt + HEAP0)) 4253 if (ecb_expect_true (active < periodiccnt + HEAP0))
3296 { 4254 {
3297 periodics [active] = periodics [periodiccnt + HEAP0]; 4255 periodics [active] = periodics [periodiccnt + HEAP0];
3298 adjustheap (periodics, periodiccnt, active); 4256 adjustheap (periodics, periodiccnt, active);
3299 } 4257 }
3300 } 4258 }
… …
3302 ev_stop (EV_A_ (W)w); 4260 ev_stop (EV_A_ (W)w);
3303 4261
3304 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3305} 4263}
3306 4264
3307void noinline 4265ecb_noinline
4266void
3308ev_periodic_again (EV_P_ ev_periodic *w) 4267ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3309{ 4268{
3310 /* TODO: use adjustheap and recalculation */ 4269 /* TODO: use adjustheap and recalculation */
3311 ev_periodic_stop (EV_A_ w); 4270 ev_periodic_stop (EV_A_ w);
3312 ev_periodic_start (EV_A_ w); 4271 ev_periodic_start (EV_A_ w);
3313} 4272}
… …
3317# define SA_RESTART 0 4276# define SA_RESTART 0
3318#endif 4277#endif
3319 4278
3320#if EV_SIGNAL_ENABLE 4279#if EV_SIGNAL_ENABLE
3321 4280
3322void noinline 4281ecb_noinline
4282void
3323ev_signal_start (EV_P_ ev_signal *w) 4283ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3324{ 4284{
3325 if (expect_false (ev_is_active (w))) 4285 if (ecb_expect_false (ev_is_active (w)))
3326 return; 4286 return;
3327 4287
3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4288 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3329 4289
3330#if EV_MULTIPLICITY 4290#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops", 4291 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4292 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3333 4293
3334 signals [w->signum - 1].loop = EV_A; 4294 signals [w->signum - 1].loop = EV_A;
4295 ECB_MEMORY_FENCE_RELEASE;
3335#endif 4296#endif
3336 4297
3337 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
3338 4299
3339#if EV_USE_SIGNALFD 4300#if EV_USE_SIGNALFD
… …
3398 } 4359 }
3399 4360
3400 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
3401} 4362}
3402 4363
3403void noinline 4364ecb_noinline
4365void
3404ev_signal_stop (EV_P_ ev_signal *w) 4366ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3405{ 4367{
3406 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 4370 return;
3409 4371
3410 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3411 4373
3412 wlist_del (&signals [w->signum - 1].head, (WL)w); 4374 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3440#endif 4402#endif
3441 4403
3442#if EV_CHILD_ENABLE 4404#if EV_CHILD_ENABLE
3443 4405
3444void 4406void
3445ev_child_start (EV_P_ ev_child *w) 4407ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3446{ 4408{
3447#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
3448 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3449#endif 4411#endif
3450 if (expect_false (ev_is_active (w))) 4412 if (ecb_expect_false (ev_is_active (w)))
3451 return; 4413 return;
3452 4414
3453 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
3454 4416
3455 ev_start (EV_A_ (W)w, 1); 4417 ev_start (EV_A_ (W)w, 1);
… …
3457 4419
3458 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3459} 4421}
3460 4422
3461void 4423void
3462ev_child_stop (EV_P_ ev_child *w) 4424ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3463{ 4425{
3464 clear_pending (EV_A_ (W)w); 4426 clear_pending (EV_A_ (W)w);
3465 if (expect_false (!ev_is_active (w))) 4427 if (ecb_expect_false (!ev_is_active (w)))
3466 return; 4428 return;
3467 4429
3468 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
3469 4431
3470 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4432 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3484 4446
3485#define DEF_STAT_INTERVAL 5.0074891 4447#define DEF_STAT_INTERVAL 5.0074891
3486#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4448#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3487#define MIN_STAT_INTERVAL 0.1074891 4449#define MIN_STAT_INTERVAL 0.1074891
3488 4450
3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4451ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3490 4452
3491#if EV_USE_INOTIFY 4453#if EV_USE_INOTIFY
3492 4454
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4455/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4456# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3495 4457
3496static void noinline 4458ecb_noinline
4459static void
3497infy_add (EV_P_ ev_stat *w) 4460infy_add (EV_P_ ev_stat *w)
3498{ 4461{
3499 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4462 w->wd = inotify_add_watch (fs_fd, w->path,
4463 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4464 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4465 | IN_DONT_FOLLOW | IN_MASK_ADD);
3500 4466
3501 if (w->wd >= 0) 4467 if (w->wd >= 0)
3502 { 4468 {
3503 struct statfs sfs; 4469 struct statfs sfs;
3504 4470
… …
3508 4474
3509 if (!fs_2625) 4475 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4476 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs) 4477 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */ 4478 && (sfs.f_type == 0x1373 /* devfs */
4479 || sfs.f_type == 0x4006 /* fat */
4480 || sfs.f_type == 0x4d44 /* msdos */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */ 4481 || sfs.f_type == 0xEF53 /* ext2/3 */
4482 || sfs.f_type == 0x72b6 /* jffs2 */
4483 || sfs.f_type == 0x858458f6 /* ramfs */
4484 || sfs.f_type == 0x5346544e /* ntfs */
3514 || sfs.f_type == 0x3153464a /* jfs */ 4485 || sfs.f_type == 0x3153464a /* jfs */
4486 || sfs.f_type == 0x9123683e /* btrfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */ 4487 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */ 4488 || sfs.f_type == 0x01021994 /* tmpfs */
3517 || sfs.f_type == 0x58465342 /* xfs */)) 4489 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4490 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else 4491 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4492 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3521 } 4493 }
… …
3556 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4528 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3557 ev_timer_again (EV_A_ &w->timer); 4529 ev_timer_again (EV_A_ &w->timer);
3558 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4530 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3559} 4531}
3560 4532
3561static void noinline 4533ecb_noinline
4534static void
3562infy_del (EV_P_ ev_stat *w) 4535infy_del (EV_P_ ev_stat *w)
3563{ 4536{
3564 int slot; 4537 int slot;
3565 int wd = w->wd; 4538 int wd = w->wd;
3566 4539
… …
3573 4546
3574 /* remove this watcher, if others are watching it, they will rearm */ 4547 /* remove this watcher, if others are watching it, they will rearm */
3575 inotify_rm_watch (fs_fd, wd); 4548 inotify_rm_watch (fs_fd, wd);
3576} 4549}
3577 4550
3578static void noinline 4551ecb_noinline
4552static void
3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4553infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3580{ 4554{
3581 if (slot < 0) 4555 if (slot < 0)
3582 /* overflow, need to check for all hash slots */ 4556 /* overflow, need to check for all hash slots */
3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4557 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3619 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len; 4594 ofs += sizeof (struct inotify_event) + ev->len;
3621 } 4595 }
3622} 4596}
3623 4597
3624inline_size void ecb_cold 4598inline_size ecb_cold
4599void
3625ev_check_2625 (EV_P) 4600ev_check_2625 (EV_P)
3626{ 4601{
3627 /* kernels < 2.6.25 are borked 4602 /* kernels < 2.6.25 are borked
3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4603 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3629 */ 4604 */
… …
3634} 4609}
3635 4610
3636inline_size int 4611inline_size int
3637infy_newfd (void) 4612infy_newfd (void)
3638{ 4613{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4614#if defined IN_CLOEXEC && defined IN_NONBLOCK
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4615 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0) 4616 if (fd >= 0)
3642 return fd; 4617 return fd;
3643#endif 4618#endif
3644 return inotify_init (); 4619 return inotify_init ();
… …
3719#else 4694#else
3720# define EV_LSTAT(p,b) lstat (p, b) 4695# define EV_LSTAT(p,b) lstat (p, b)
3721#endif 4696#endif
3722 4697
3723void 4698void
3724ev_stat_stat (EV_P_ ev_stat *w) 4699ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3725{ 4700{
3726 if (lstat (w->path, &w->attr) < 0) 4701 if (lstat (w->path, &w->attr) < 0)
3727 w->attr.st_nlink = 0; 4702 w->attr.st_nlink = 0;
3728 else if (!w->attr.st_nlink) 4703 else if (!w->attr.st_nlink)
3729 w->attr.st_nlink = 1; 4704 w->attr.st_nlink = 1;
3730} 4705}
3731 4706
3732static void noinline 4707ecb_noinline
4708static void
3733stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4709stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3734{ 4710{
3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4711 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3736 4712
3737 ev_statdata prev = w->attr; 4713 ev_statdata prev = w->attr;
… …
3768 ev_feed_event (EV_A_ w, EV_STAT); 4744 ev_feed_event (EV_A_ w, EV_STAT);
3769 } 4745 }
3770} 4746}
3771 4747
3772void 4748void
3773ev_stat_start (EV_P_ ev_stat *w) 4749ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3774{ 4750{
3775 if (expect_false (ev_is_active (w))) 4751 if (ecb_expect_false (ev_is_active (w)))
3776 return; 4752 return;
3777 4753
3778 ev_stat_stat (EV_A_ w); 4754 ev_stat_stat (EV_A_ w);
3779 4755
3780 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4756 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3799 4775
3800 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
3801} 4777}
3802 4778
3803void 4779void
3804ev_stat_stop (EV_P_ ev_stat *w) 4780ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3805{ 4781{
3806 clear_pending (EV_A_ (W)w); 4782 clear_pending (EV_A_ (W)w);
3807 if (expect_false (!ev_is_active (w))) 4783 if (ecb_expect_false (!ev_is_active (w)))
3808 return; 4784 return;
3809 4785
3810 EV_FREQUENT_CHECK; 4786 EV_FREQUENT_CHECK;
3811 4787
3812#if EV_USE_INOTIFY 4788#if EV_USE_INOTIFY
… …
3825} 4801}
3826#endif 4802#endif
3827 4803
3828#if EV_IDLE_ENABLE 4804#if EV_IDLE_ENABLE
3829void 4805void
3830ev_idle_start (EV_P_ ev_idle *w) 4806ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3831{ 4807{
3832 if (expect_false (ev_is_active (w))) 4808 if (ecb_expect_false (ev_is_active (w)))
3833 return; 4809 return;
3834 4810
3835 pri_adjust (EV_A_ (W)w); 4811 pri_adjust (EV_A_ (W)w);
3836 4812
3837 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
… …
3840 int active = ++idlecnt [ABSPRI (w)]; 4816 int active = ++idlecnt [ABSPRI (w)];
3841 4817
3842 ++idleall; 4818 ++idleall;
3843 ev_start (EV_A_ (W)w, active); 4819 ev_start (EV_A_ (W)w, active);
3844 4820
3845 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4821 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3846 idles [ABSPRI (w)][active - 1] = w; 4822 idles [ABSPRI (w)][active - 1] = w;
3847 } 4823 }
3848 4824
3849 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3850} 4826}
3851 4827
3852void 4828void
3853ev_idle_stop (EV_P_ ev_idle *w) 4829ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4830{
3855 clear_pending (EV_A_ (W)w); 4831 clear_pending (EV_A_ (W)w);
3856 if (expect_false (!ev_is_active (w))) 4832 if (ecb_expect_false (!ev_is_active (w)))
3857 return; 4833 return;
3858 4834
3859 EV_FREQUENT_CHECK; 4835 EV_FREQUENT_CHECK;
3860 4836
3861 { 4837 {
… …
3872} 4848}
3873#endif 4849#endif
3874 4850
3875#if EV_PREPARE_ENABLE 4851#if EV_PREPARE_ENABLE
3876void 4852void
3877ev_prepare_start (EV_P_ ev_prepare *w) 4853ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3878{ 4854{
3879 if (expect_false (ev_is_active (w))) 4855 if (ecb_expect_false (ev_is_active (w)))
3880 return; 4856 return;
3881 4857
3882 EV_FREQUENT_CHECK; 4858 EV_FREQUENT_CHECK;
3883 4859
3884 ev_start (EV_A_ (W)w, ++preparecnt); 4860 ev_start (EV_A_ (W)w, ++preparecnt);
3885 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4861 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3886 prepares [preparecnt - 1] = w; 4862 prepares [preparecnt - 1] = w;
3887 4863
3888 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3889} 4865}
3890 4866
3891void 4867void
3892ev_prepare_stop (EV_P_ ev_prepare *w) 4868ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3893{ 4869{
3894 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4871 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 4872 return;
3897 4873
3898 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3899 4875
3900 { 4876 {
… …
3910} 4886}
3911#endif 4887#endif
3912 4888
3913#if EV_CHECK_ENABLE 4889#if EV_CHECK_ENABLE
3914void 4890void
3915ev_check_start (EV_P_ ev_check *w) 4891ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3916{ 4892{
3917 if (expect_false (ev_is_active (w))) 4893 if (ecb_expect_false (ev_is_active (w)))
3918 return; 4894 return;
3919 4895
3920 EV_FREQUENT_CHECK; 4896 EV_FREQUENT_CHECK;
3921 4897
3922 ev_start (EV_A_ (W)w, ++checkcnt); 4898 ev_start (EV_A_ (W)w, ++checkcnt);
3923 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4899 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3924 checks [checkcnt - 1] = w; 4900 checks [checkcnt - 1] = w;
3925 4901
3926 EV_FREQUENT_CHECK; 4902 EV_FREQUENT_CHECK;
3927} 4903}
3928 4904
3929void 4905void
3930ev_check_stop (EV_P_ ev_check *w) 4906ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3931{ 4907{
3932 clear_pending (EV_A_ (W)w); 4908 clear_pending (EV_A_ (W)w);
3933 if (expect_false (!ev_is_active (w))) 4909 if (ecb_expect_false (!ev_is_active (w)))
3934 return; 4910 return;
3935 4911
3936 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
3937 4913
3938 { 4914 {
… …
3947 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3948} 4924}
3949#endif 4925#endif
3950 4926
3951#if EV_EMBED_ENABLE 4927#if EV_EMBED_ENABLE
3952void noinline 4928ecb_noinline
4929void
3953ev_embed_sweep (EV_P_ ev_embed *w) 4930ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3954{ 4931{
3955 ev_run (w->other, EVRUN_NOWAIT); 4932 ev_run (w->other, EVRUN_NOWAIT);
3956} 4933}
3957 4934
3958static void 4935static void
… …
4006 ev_idle_stop (EV_A_ idle); 4983 ev_idle_stop (EV_A_ idle);
4007} 4984}
4008#endif 4985#endif
4009 4986
4010void 4987void
4011ev_embed_start (EV_P_ ev_embed *w) 4988ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4012{ 4989{
4013 if (expect_false (ev_is_active (w))) 4990 if (ecb_expect_false (ev_is_active (w)))
4014 return; 4991 return;
4015 4992
4016 { 4993 {
4017 EV_P = w->other; 4994 EV_P = w->other;
4018 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4995 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4037 5014
4038 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
4039} 5016}
4040 5017
4041void 5018void
4042ev_embed_stop (EV_P_ ev_embed *w) 5019ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4043{ 5020{
4044 clear_pending (EV_A_ (W)w); 5021 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 5022 if (ecb_expect_false (!ev_is_active (w)))
4046 return; 5023 return;
4047 5024
4048 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
4049 5026
4050 ev_io_stop (EV_A_ &w->io); 5027 ev_io_stop (EV_A_ &w->io);
… …
4057} 5034}
4058#endif 5035#endif
4059 5036
4060#if EV_FORK_ENABLE 5037#if EV_FORK_ENABLE
4061void 5038void
4062ev_fork_start (EV_P_ ev_fork *w) 5039ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4063{ 5040{
4064 if (expect_false (ev_is_active (w))) 5041 if (ecb_expect_false (ev_is_active (w)))
4065 return; 5042 return;
4066 5043
4067 EV_FREQUENT_CHECK; 5044 EV_FREQUENT_CHECK;
4068 5045
4069 ev_start (EV_A_ (W)w, ++forkcnt); 5046 ev_start (EV_A_ (W)w, ++forkcnt);
4070 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5047 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4071 forks [forkcnt - 1] = w; 5048 forks [forkcnt - 1] = w;
4072 5049
4073 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4074} 5051}
4075 5052
4076void 5053void
4077ev_fork_stop (EV_P_ ev_fork *w) 5054ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4078{ 5055{
4079 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4080 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4081 return; 5058 return;
4082 5059
4083 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4084 5061
4085 { 5062 {
… …
4095} 5072}
4096#endif 5073#endif
4097 5074
4098#if EV_CLEANUP_ENABLE 5075#if EV_CLEANUP_ENABLE
4099void 5076void
4100ev_cleanup_start (EV_P_ ev_cleanup *w) 5077ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4101{ 5078{
4102 if (expect_false (ev_is_active (w))) 5079 if (ecb_expect_false (ev_is_active (w)))
4103 return; 5080 return;
4104 5081
4105 EV_FREQUENT_CHECK; 5082 EV_FREQUENT_CHECK;
4106 5083
4107 ev_start (EV_A_ (W)w, ++cleanupcnt); 5084 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5085 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4109 cleanups [cleanupcnt - 1] = w; 5086 cleanups [cleanupcnt - 1] = w;
4110 5087
4111 /* cleanup watchers should never keep a refcount on the loop */ 5088 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A); 5089 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK; 5090 EV_FREQUENT_CHECK;
4114} 5091}
4115 5092
4116void 5093void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w) 5094ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4118{ 5095{
4119 clear_pending (EV_A_ (W)w); 5096 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 5097 if (ecb_expect_false (!ev_is_active (w)))
4121 return; 5098 return;
4122 5099
4123 EV_FREQUENT_CHECK; 5100 EV_FREQUENT_CHECK;
4124 ev_ref (EV_A); 5101 ev_ref (EV_A);
4125 5102
… …
4136} 5113}
4137#endif 5114#endif
4138 5115
4139#if EV_ASYNC_ENABLE 5116#if EV_ASYNC_ENABLE
4140void 5117void
4141ev_async_start (EV_P_ ev_async *w) 5118ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4142{ 5119{
4143 if (expect_false (ev_is_active (w))) 5120 if (ecb_expect_false (ev_is_active (w)))
4144 return; 5121 return;
4145 5122
4146 w->sent = 0; 5123 w->sent = 0;
4147 5124
4148 evpipe_init (EV_A); 5125 evpipe_init (EV_A);
4149 5126
4150 EV_FREQUENT_CHECK; 5127 EV_FREQUENT_CHECK;
4151 5128
4152 ev_start (EV_A_ (W)w, ++asynccnt); 5129 ev_start (EV_A_ (W)w, ++asynccnt);
4153 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5130 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4154 asyncs [asynccnt - 1] = w; 5131 asyncs [asynccnt - 1] = w;
4155 5132
4156 EV_FREQUENT_CHECK; 5133 EV_FREQUENT_CHECK;
4157} 5134}
4158 5135
4159void 5136void
4160ev_async_stop (EV_P_ ev_async *w) 5137ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4161{ 5138{
4162 clear_pending (EV_A_ (W)w); 5139 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 5140 if (ecb_expect_false (!ev_is_active (w)))
4164 return; 5141 return;
4165 5142
4166 EV_FREQUENT_CHECK; 5143 EV_FREQUENT_CHECK;
4167 5144
4168 { 5145 {
… …
4176 5153
4177 EV_FREQUENT_CHECK; 5154 EV_FREQUENT_CHECK;
4178} 5155}
4179 5156
4180void 5157void
4181ev_async_send (EV_P_ ev_async *w) 5158ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4182{ 5159{
4183 w->sent = 1; 5160 w->sent = 1;
4184 evpipe_write (EV_A_ &async_pending); 5161 evpipe_write (EV_A_ &async_pending);
4185} 5162}
4186#endif 5163#endif
… …
4223 5200
4224 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5201 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4225} 5202}
4226 5203
4227void 5204void
4228ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5205ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4229{ 5206{
4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5207 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4231
4232 if (expect_false (!once))
4233 {
4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4235 return;
4236 }
4237 5208
4238 once->cb = cb; 5209 once->cb = cb;
4239 once->arg = arg; 5210 once->arg = arg;
4240 5211
4241 ev_init (&once->io, once_cb_io); 5212 ev_init (&once->io, once_cb_io);
… …
4254} 5225}
4255 5226
4256/*****************************************************************************/ 5227/*****************************************************************************/
4257 5228
4258#if EV_WALK_ENABLE 5229#if EV_WALK_ENABLE
4259void ecb_cold 5230ecb_cold
5231void
4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5232ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4261{ 5233{
4262 int i, j; 5234 int i, j;
4263 ev_watcher_list *wl, *wn; 5235 ev_watcher_list *wl, *wn;
4264 5236
4265 if (types & (EV_IO | EV_EMBED)) 5237 if (types & (EV_IO | EV_EMBED))
… …
4371 5343
4372#if EV_MULTIPLICITY 5344#if EV_MULTIPLICITY
4373 #include "ev_wrap.h" 5345 #include "ev_wrap.h"
4374#endif 5346#endif
4375 5347
4376EV_CPP(})
4377

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