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Comparing libev/ev.c (file contents):
Revision 1.397 by root, Wed Aug 24 16:13:41 2011 UTC vs.
Revision 1.513 by root, Fri Dec 20 05:20:23 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/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
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#endif 733#endif
544 734
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 */
742#endif
743
545#ifndef ECB_MEMORY_FENCE 744#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
547 #if __i386__ 747 #if __i386 || __i386__
548 #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")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 751 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 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 */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 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")
563 #endif 796 #endif
564 #endif 797 #endif
565#endif 798#endif
566 799
567#ifndef ECB_MEMORY_FENCE 800#ifndef ECB_MEMORY_FENCE
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
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 816 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#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()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #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 */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 828 #elif defined _WIN32
578 #include <WinNT.h> 829 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
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 ()
839 #endif
840#endif
841
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)
580 #endif 850 #endif
581#endif 851#endif
582 852
583#ifndef ECB_MEMORY_FENCE 853#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 854 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 868 #endif
599#endif 869#endif
600 870
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 873#endif
604 874
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 877#endif
608 878
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
609/*****************************************************************************/ 883/*****************************************************************************/
610 884
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 885#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 886 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
617#elif ECB_C99 889#elif ECB_C99
618 #define ecb_inline static inline 890 #define ecb_inline static inline
… …
632 904
633#define ECB_CONCAT_(a, b) a ## b 905#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 907#define ECB_STRINGIFY_(a) # a
636#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))
637 910
638#define ecb_function_ ecb_inline 911#define ecb_function_ ecb_inline
639 912
640#if ECB_GCC_VERSION(3,1) 913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #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)
642 #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)
643 #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)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 937#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
650#endif 939#endif
651 940
652/* no emulation for ecb_decltype */ 941/* no emulation for ecb_decltype */
653#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; };
654 #define ecb_decltype(x) __decltype(x) 945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 947 #define ecb_decltype(x) __typeof__ (x)
657#endif 948#endif
658 949
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
659#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 968#endif
969
661#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
663#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
664 985
665#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 987 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 988 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 989 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 1001/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 1002#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 1003#define ecb_unlikely(expr) ecb_expect_false (expr)
683 1004
684/* count trailing zero bits and count # of one bits */ 1005/* count trailing zero bits and count # of one bits */
685#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))
686 /* 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 */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 1013 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 1014 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 1015 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 1016 /* no popcountll */
693#else 1017#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 1019 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 1020 ecb_ctz32 (uint32_t x)
697 { 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
698 int r = 0; 1027 int r = 0;
699 1028
700 x &= ~x + 1; /* this isolates the lowest bit */ 1029 x &= ~x + 1; /* this isolates the lowest bit */
701 1030
702#if ECB_branchless_on_i386 1031#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 1041 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 1042 if (x & 0xffff0000) r += 16;
714#endif 1043#endif
715 1044
716 return r; 1045 return r;
1046#endif
717 } 1047 }
718 1048
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 1050 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 1051 ecb_ctz64 (uint64_t x)
722 { 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
723 int shift = x & 0xffffffffU ? 0 : 32; 1058 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
725 } 1061 }
726 1062
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1064 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1065 ecb_popcount32 (uint32_t x)
730 { 1066 {
731 x -= (x >> 1) & 0x55555555; 1067 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1070 x *= 0x01010101;
735 1071
736 return x >> 24; 1072 return x >> 24;
737 } 1073 }
738 1074
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 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
742 int r = 0; 1083 int r = 0;
743 1084
744 if (x >> 16) { x >>= 16; r += 16; } 1085 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1086 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1087 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1088 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1089 if (x >> 1) { r += 1; }
749 1090
750 return r; 1091 return r;
1092#endif
751 } 1093 }
752 1094
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 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
756 int r = 0; 1103 int r = 0;
757 1104
758 if (x >> 32) { x >>= 32; r += 32; } 1105 if (x >> 32) { x >>= 32; r += 32; }
759 1106
760 return r + ecb_ld32 (x); 1107 return r + ecb_ld32 (x);
1108#endif
761 } 1109 }
762#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}
763 1146
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1148/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1150ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1151ecb_popcount64 (uint64_t x)
769{ 1152{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1154}
772 1155
773ecb_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);
774ecb_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);
775ecb_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);
776ecb_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);
777ecb_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);
778ecb_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);
779ecb_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);
780ecb_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);
781 1164
782ecb_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); }
783ecb_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); }
784ecb_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); }
785ecb_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); }
786ecb_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); }
787ecb_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); }
788ecb_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); }
789ecb_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); }
790 1173
791#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
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #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)))
795#else 1187#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1189 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1190 ecb_bswap16 (uint16_t x)
799 { 1191 {
800 return ecb_rotl16 (x, 8); 1192 return ecb_rotl16 (x, 8);
801 } 1193 }
802 1194
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1196 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1197 ecb_bswap32 (uint32_t x)
806 { 1198 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1200 }
809 1201
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1203 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1204 ecb_bswap64 (uint64_t x)
813 { 1205 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1207 }
816#endif 1208#endif
817 1209
818#if ECB_GCC_VERSION(4,5) 1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1211 #define ecb_unreachable() __builtin_unreachable ()
820#else 1212#else
821 /* 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 :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1216#endif
825 1217
826/* try to tell the compiler that some condition is definitely true */ 1218/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1220
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1222ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1223ecb_byteorder_helper (void)
832{ 1224{
833 const uint32_t u = 0x11223344; 1225 /* the union code still generates code under pressure in gcc, */
834 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
835} 1247}
836 1248
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_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; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_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; }
841 1253
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1254#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #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))
844#else 1256#else
845 #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))
846#endif 1274#endif
847 1275
848#if ecb_cplusplus_does_not_suck 1276#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1278 template<typename T, int N>
… …
854 } 1282 }
855#else 1283#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1285#endif
858 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
859#endif 1592#endif
860 1593
861/* ECB.H END */ 1594/* ECB.H END */
862 1595
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architecture doesn't need memory fences, e.g. because it is 1597/* if your architecture doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev 1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
867 * libev, in which casess the memory fences become nops. 1600 * libev, in which cases the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread, 1601 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences. 1602 * which will then provide the memory fences.
870 */ 1603 */
871# error "memory fences not defined for your architecture, please report" 1604# error "memory fences not defined for your architecture, please report"
872#endif 1605#endif
… …
875# define ECB_MEMORY_FENCE do { } while (0) 1608# define ECB_MEMORY_FENCE do { } while (0)
876# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
877# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
878#endif 1611#endif
879 1612
880#define expect_false(cond) ecb_expect_false (cond)
881#define expect_true(cond) ecb_expect_true (cond)
882#define noinline ecb_noinline
883
884#define inline_size ecb_inline 1613#define inline_size ecb_inline
885 1614
886#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
887# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
888#else 1617#else
889# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
890#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/*****************************************************************************/
891 1686
892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
893 1688
894#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
895# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
896#else 1691#else
897# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
898#endif 1693#endif
899 1694
900#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
901#define EMPTY2(a,b) /* used to suppress some warnings */
902 1696
903typedef ev_watcher *W; 1697typedef ev_watcher *W;
904typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
905typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
906 1700
… …
931# include "ev_win32.c" 1725# include "ev_win32.c"
932#endif 1726#endif
933 1727
934/*****************************************************************************/ 1728/*****************************************************************************/
935 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
936/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
937 1735
938#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
939# include <math.h> 1737# include <math.h>
940# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
941#else 1739#else
942 1740
943#include <float.h> 1741#include <float.h>
944 1742
945/* 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
946static ev_tstamp noinline 1745static ev_tstamp
947ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
948{ 1747{
949 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
952#else 1751#else
953 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
954#endif 1753#endif
955 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
956 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
957 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
958 { 1765 {
959 ev_tstamp f; 1766 ev_tstamp f;
960 1767
961 if (v == v - 1.) 1768 if (v == v - 1.)
962 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
963 1770
964 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
965 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
966 } 1773 }
967 1774
968 /* special treatment for negative args? */
969 if (expect_false (v < 0.))
970 {
971 ev_tstamp f = -ev_floor (-v);
972
973 return f - (f == v ? 0 : 1);
974 }
975
976 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
977 return (unsigned long)v; 1776 return (unsigned long)v;
978} 1777}
979 1778
980#endif 1779#endif
… …
983 1782
984#ifdef __linux 1783#ifdef __linux
985# include <sys/utsname.h> 1784# include <sys/utsname.h>
986#endif 1785#endif
987 1786
988static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
989ev_linux_version (void) 1789ev_linux_version (void)
990{ 1790{
991#ifdef __linux 1791#ifdef __linux
992 unsigned int v = 0; 1792 unsigned int v = 0;
993 struct utsname buf; 1793 struct utsname buf;
… …
1022} 1822}
1023 1823
1024/*****************************************************************************/ 1824/*****************************************************************************/
1025 1825
1026#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
1027static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1028ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
1029{ 1830{
1030 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
1031} 1832}
1032#endif 1833#endif
1033 1834
1034static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1035 1836
1036void ecb_cold 1837ecb_cold
1838void
1037ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1038{ 1840{
1039 syserr_cb = cb; 1841 syserr_cb = cb;
1040} 1842}
1041 1843
1042static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
1043ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
1044{ 1847{
1045 if (!msg) 1848 if (!msg)
1046 msg = "(libev) system error"; 1849 msg = "(libev) system error";
1047 1850
… …
1060 abort (); 1863 abort ();
1061 } 1864 }
1062} 1865}
1063 1866
1064static void * 1867static void *
1065ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1066{ 1869{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
1070 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
1071 * 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
1072 * 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.
1073 */ 1875 */
1074 1876
1075 if (size) 1877 if (size)
1076 return realloc (ptr, size); 1878 return realloc (ptr, size);
1077 1879
1078 free (ptr); 1880 free (ptr);
1079 return 0; 1881 return 0;
1080#endif
1081} 1882}
1082 1883
1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1084 1885
1085void ecb_cold 1886ecb_cold
1887void
1086ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1087{ 1889{
1088 alloc = cb; 1890 alloc = cb;
1089} 1891}
1090 1892
1091inline_speed void * 1893inline_speed void *
… …
1118typedef struct 1920typedef struct
1119{ 1921{
1120 WL head; 1922 WL head;
1121 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
1122 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) */
1123 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 */
1124 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
1125#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
1126 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
1127#endif 1929#endif
1128#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1129 SOCKET handle; 1931 SOCKET handle;
… …
1179 #undef VAR 1981 #undef VAR
1180 }; 1982 };
1181 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
1182 1984
1183 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
1184 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 */
1185 1987
1186#else 1988#else
1187 1989
1188 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 */
1189 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
1190 #include "ev_vars.h" 1992 #include "ev_vars.h"
1191 #undef VAR 1993 #undef VAR
1192 1994
1193 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
1194 1996
1195#endif 1997#endif
1196 1998
1197#if EV_FEATURE_API 1999#if EV_FEATURE_API
1198# 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)
1199# 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)
1200# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
1201#else 2003#else
1202# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
1203# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
1204# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1208 2010
1209/*****************************************************************************/ 2011/*****************************************************************************/
1210 2012
1211#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
1212ev_tstamp 2014ev_tstamp
1213ev_time (void) 2015ev_time (void) EV_NOEXCEPT
1214{ 2016{
1215#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
1216 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
1217 { 2019 {
1218 struct timespec ts; 2020 struct timespec ts;
1219 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
1220 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
1221 } 2023 }
1222#endif 2024#endif
1223 2025
2026 {
1224 struct timeval tv; 2027 struct timeval tv;
1225 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
1226 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
1227} 2031}
1228#endif 2032#endif
1229 2033
1230inline_size ev_tstamp 2034inline_size ev_tstamp
1231get_clock (void) 2035get_clock (void)
1232{ 2036{
1233#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
1234 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
1235 { 2039 {
1236 struct timespec ts; 2040 struct timespec ts;
1237 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
1238 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
1239 } 2043 }
1240#endif 2044#endif
1241 2045
1242 return ev_time (); 2046 return ev_time ();
1243} 2047}
1244 2048
1245#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
1246ev_tstamp 2050ev_tstamp
1247ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
1248{ 2052{
1249 return ev_rt_now; 2053 return ev_rt_now;
1250} 2054}
1251#endif 2055#endif
1252 2056
1253void 2057void
1254ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1255{ 2059{
1256 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
1257 { 2061 {
1258#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
1259 struct timespec ts; 2063 struct timespec ts;
1260 2064
1261 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
1262 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
1263#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) */
1264 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1265#else 2071#else
1266 struct timeval tv; 2072 struct timeval tv;
1267 2073
1268 /* 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 */
1269 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1287 2093
1288 do 2094 do
1289 ncur <<= 1; 2095 ncur <<= 1;
1290 while (cnt > ncur); 2096 while (cnt > ncur);
1291 2097
1292 /* 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 */
1293 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1294 { 2100 {
1295 ncur *= elem; 2101 ncur *= elem;
1296 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);
1297 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
1299 } 2105 }
1300 2106
1301 return ncur; 2107 return ncur;
1302} 2108}
1303 2109
1304static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
1305array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
1306{ 2113{
1307 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1308 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1309} 2116}
1310 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1311#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1312 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1313 2122
1314#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1315 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1316 { \ 2125 { \
1317 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1318 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1319 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1320 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1321 } 2130 }
1322 2131
1323#if 0 2132#if 0
1324#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1325 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1334 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
1335 2144
1336/*****************************************************************************/ 2145/*****************************************************************************/
1337 2146
1338/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1339static void noinline 2148ecb_noinline
2149static void
1340pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1341{ 2151{
1342} 2152}
1343 2153
1344void noinline 2154ecb_noinline
2155void
1345ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1346{ 2157{
1347 W w_ = (W)w; 2158 W w_ = (W)w;
1348 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1349 2160
1350 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1351 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1352 else 2163 else
1353 { 2164 {
1354 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1355 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1356 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1357 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1358 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
1359} 2172}
1360 2173
1361inline_speed void 2174inline_speed void
1362feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1363{ 2176{
1364 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1365 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1366} 2179}
1367 2180
1368inline_size void 2181inline_size void
1369feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1404inline_speed void 2217inline_speed void
1405fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1406{ 2219{
1407 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1408 2221
1409 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1411} 2224}
1412 2225
1413void 2226void
1414ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1415{ 2228{
1416 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1417 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1418} 2231}
1419 2232
… …
1456 ev_io *w; 2269 ev_io *w;
1457 2270
1458 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1459 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1460 2273
1461 anfd->reify = 0; 2274 anfd->reify = 0;
1462 2275
1463 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1464 { 2277 {
1465 anfd->events = 0; 2278 anfd->events = 0;
1466 2279
1467 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)
1468 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1477 2290
1478 fdchangecnt = 0; 2291 fdchangecnt = 0;
1479} 2292}
1480 2293
1481/* something about the given fd changed */ 2294/* something about the given fd changed */
1482inline_size void 2295inline_size
2296void
1483fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1484{ 2298{
1485 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1486 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1487 2301
1488 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1489 { 2303 {
1490 ++fdchangecnt; 2304 ++fdchangecnt;
1491 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1492 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1493 } 2307 }
1494} 2308}
1495 2309
1496/* 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 */
1497inline_speed void ecb_cold 2311inline_speed ecb_cold void
1498fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1499{ 2313{
1500 ev_io *w; 2314 ev_io *w;
1501 2315
1502 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1505 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);
1506 } 2320 }
1507} 2321}
1508 2322
1509/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1510inline_size int ecb_cold 2324inline_size ecb_cold int
1511fd_valid (int fd) 2325fd_valid (int fd)
1512{ 2326{
1513#ifdef _WIN32 2327#ifdef _WIN32
1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1515#else 2329#else
1516 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1517#endif 2331#endif
1518} 2332}
1519 2333
1520/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1521static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1522fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1523{ 2338{
1524 int fd; 2339 int fd;
1525 2340
1526 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1528 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1529 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1530} 2345}
1531 2346
1532/* 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 */
1533static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1534fd_enomem (EV_P) 2350fd_enomem (EV_P)
1535{ 2351{
1536 int fd; 2352 int fd;
1537 2353
1538 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1542 break; 2358 break;
1543 } 2359 }
1544} 2360}
1545 2361
1546/* 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 */
1547static void noinline 2363ecb_noinline
2364static void
1548fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1549{ 2366{
1550 int fd; 2367 int fd;
1551 2368
1552 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1605 ev_tstamp minat; 2422 ev_tstamp minat;
1606 ANHE *minpos; 2423 ANHE *minpos;
1607 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1608 2425
1609 /* find minimum child */ 2426 /* find minimum child */
1610 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1611 { 2428 {
1612 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1613 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));
1614 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));
1615 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));
1616 } 2433 }
1617 else if (pos < E) 2434 else if (pos < E)
1618 { 2435 {
1619 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1620 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));
1621 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));
1622 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));
1623 } 2440 }
1624 else 2441 else
1625 break; 2442 break;
1626 2443
1627 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1635 2452
1636 heap [k] = he; 2453 heap [k] = he;
1637 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1638} 2455}
1639 2456
1640#else /* 4HEAP */ 2457#else /* not 4HEAP */
1641 2458
1642#define HEAP0 1 2459#define HEAP0 1
1643#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1644#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1645 2462
… …
1733 2550
1734/*****************************************************************************/ 2551/*****************************************************************************/
1735 2552
1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 2554
1738static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1739evpipe_init (EV_P) 2557evpipe_init (EV_P)
1740{ 2558{
1741 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1742 { 2560 {
2561 int fds [2];
2562
1743# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1746 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1747 2568
1748 if (evfd >= 0) 2569 if (fds [1] < 0)
2570# endif
1749 { 2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
1750 evpipe [0] = -1; 2578 evpipe [0] = fds [0];
1751 fd_intern (evfd); /* doing it twice doesn't hurt */ 2579
1752 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));
1753 } 2630 }
1754 else 2631 else
1755# endif 2632#endif
1756 { 2633 {
1757 while (pipe (evpipe)) 2634#ifdef _WIN32
1758 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1759 2636 DWORD sent;
1760 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1761 fd_intern (evpipe [1]); 2638 buf.len = 1;
1762 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1763 } 2640#else
1764
1765 ev_io_start (EV_A_ &pipe_w);
1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1767 }
1768}
1769
1770inline_speed void
1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1772{
1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1790 old_errno = errno; /* save errno because write will clobber it */
1791
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 {
1795 uint64_t counter = 1;
1796 write (evfd, &counter, sizeof (uint64_t));
1797 }
1798 else
1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1806 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1807 } 2643 }
1808 2644
1809 errno = old_errno; 2645 errno = old_errno;
1810 } 2646 }
1811} 2647}
… …
1818 int i; 2654 int i;
1819 2655
1820 if (revents & EV_READ) 2656 if (revents & EV_READ)
1821 { 2657 {
1822#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1823 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1824 { 2660 {
1825 uint64_t counter; 2661 uint64_t counter;
1826 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2663 }
1828 else 2664 else
1829#endif 2665#endif
1830 { 2666 {
1831 char dummy; 2667 char dummy[4];
1832 /* 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
1833 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
1834 } 2678 }
1835 } 2679 }
1836 2680
1837 pipe_write_skipped = 0; 2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1838 2684
1839#if EV_SIGNAL_ENABLE 2685#if EV_SIGNAL_ENABLE
1840 if (sig_pending) 2686 if (sig_pending)
1841 { 2687 {
1842 sig_pending = 0; 2688 sig_pending = 0;
1843 2689
2690 ECB_MEMORY_FENCE;
2691
1844 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1845 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1846 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1847 } 2695 }
1848#endif 2696#endif
1849 2697
1850#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1851 if (async_pending) 2699 if (async_pending)
1852 { 2700 {
1853 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1854 2704
1855 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1856 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1857 { 2707 {
1858 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1859 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1860 } 2711 }
1861 } 2712 }
1862#endif 2713#endif
1863} 2714}
1864 2715
1865/*****************************************************************************/ 2716/*****************************************************************************/
1866 2717
1867void 2718void
1868ev_feed_signal (int signum) 2719ev_feed_signal (int signum) EV_NOEXCEPT
1869{ 2720{
1870#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
1871 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
1872 2725
1873 if (!EV_A) 2726 if (!EV_A)
1874 return; 2727 return;
1875#endif 2728#endif
1876 2729
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
1882} 2732}
1883 2733
1884static void 2734static void
… …
1889#endif 2739#endif
1890 2740
1891 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
1892} 2742}
1893 2743
1894void noinline 2744ecb_noinline
2745void
1895ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1896{ 2747{
1897 WL w; 2748 WL w;
1898 2749
1899 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1900 return; 2751 return;
1901 2752
1902 --signum; 2753 --signum;
1903 2754
1904#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1905 /* 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 */
1906 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1907 2758
1908 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1909 return; 2760 return;
1910#endif 2761#endif
1911 2762
1912 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1913 2765
1914 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1916} 2768}
1917 2769
… …
2008# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
2009#endif 2861#endif
2010#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
2011# include "ev_epoll.c" 2863# include "ev_epoll.c"
2012#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
2013#if EV_USE_POLL 2871#if EV_USE_POLL
2014# include "ev_poll.c" 2872# include "ev_poll.c"
2015#endif 2873#endif
2016#if EV_USE_SELECT 2874#if EV_USE_SELECT
2017# include "ev_select.c" 2875# include "ev_select.c"
2018#endif 2876#endif
2019 2877
2020int ecb_cold 2878ecb_cold int
2021ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
2022{ 2880{
2023 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
2024} 2882}
2025 2883
2026int ecb_cold 2884ecb_cold int
2027ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
2028{ 2886{
2029 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
2030} 2888}
2031 2889
2032/* 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 */
2033int inline_size ecb_cold 2891inline_size ecb_cold int
2034enable_secure (void) 2892enable_secure (void)
2035{ 2893{
2036#ifdef _WIN32 2894#ifdef _WIN32
2037 return 0; 2895 return 0;
2038#else 2896#else
2039 return getuid () != geteuid () 2897 return getuid () != geteuid ()
2040 || getgid () != getegid (); 2898 || getgid () != getegid ();
2041#endif 2899#endif
2042} 2900}
2043 2901
2044unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2045ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
2046{ 2905{
2047 unsigned int flags = 0; 2906 unsigned int flags = 0;
2048 2907
2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2050 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2051 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;
2052 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2054 2915
2055 return flags; 2916 return flags;
2056} 2917}
2057 2918
2058unsigned int ecb_cold 2919ecb_cold
2920unsigned int
2059ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
2060{ 2922{
2061 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
2062 2924
2063#ifndef __NetBSD__ 2925#ifndef __NetBSD__
2064 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
2072#endif 2934#endif
2073#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
2074 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) */
2075#endif 2937#endif
2076 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
2077 return flags; 2948 return flags;
2078} 2949}
2079 2950
2080unsigned int ecb_cold 2951ecb_cold
2952unsigned int
2081ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
2082{ 2954{
2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2084 2956
2085 /* 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 */
2086 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 */
2087 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2088 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
2089 return flags; 2968 return flags;
2090} 2969}
2091 2970
2092unsigned int 2971unsigned int
2093ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
2094{ 2973{
2095 return backend; 2974 return backend;
2096} 2975}
2097 2976
2098#if EV_FEATURE_API 2977#if EV_FEATURE_API
2099unsigned int 2978unsigned int
2100ev_iteration (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
2101{ 2980{
2102 return loop_count; 2981 return loop_count;
2103} 2982}
2104 2983
2105unsigned int 2984unsigned int
2106ev_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
2107{ 2986{
2108 return loop_depth; 2987 return loop_depth;
2109} 2988}
2110 2989
2111void 2990void
2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 2992{
2114 io_blocktime = interval; 2993 io_blocktime = interval;
2115} 2994}
2116 2995
2117void 2996void
2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2119{ 2998{
2120 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
2121} 3000}
2122 3001
2123void 3002void
2124ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2125{ 3004{
2126 userdata = data; 3005 userdata = data;
2127} 3006}
2128 3007
2129void * 3008void *
2130ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
2131{ 3010{
2132 return userdata; 3011 return userdata;
2133} 3012}
2134 3013
2135void 3014void
2136ev_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
2137{ 3016{
2138 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
2139} 3018}
2140 3019
2141void 3020void
2142ev_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
2143{ 3022{
2144 release_cb = release; 3023 release_cb = release;
2145 acquire_cb = acquire; 3024 acquire_cb = acquire;
2146} 3025}
2147#endif 3026#endif
2148 3027
2149/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
2150static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
2151loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2152{ 3032{
2153 if (!backend) 3033 if (!backend)
2154 { 3034 {
2155 origflags = flags; 3035 origflags = flags;
2156 3036
… …
2201#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
2202 async_pending = 0; 3082 async_pending = 0;
2203#endif 3083#endif
2204 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
2206#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif 3090#endif
2209#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2212 3094
2213 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
2214 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
2215 3097
2216#if EV_USE_IOCP 3098#if EV_USE_IOCP
2217 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2218#endif 3100#endif
2219#if EV_USE_PORT 3101#if EV_USE_PORT
2220 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2221#endif 3103#endif
2222#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
2223 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);
2224#endif 3112#endif
2225#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
2226 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2227#endif 3115#endif
2228#if EV_USE_POLL 3116#if EV_USE_POLL
2229 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2230#endif 3118#endif
2231#if EV_USE_SELECT 3119#if EV_USE_SELECT
2232 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2233#endif 3121#endif
2234 3122
2235 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
2236 3124
2237#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2240#endif 3128#endif
2241 } 3129 }
2242} 3130}
2243 3131
2244/* free up a loop structure */ 3132/* free up a loop structure */
2245void ecb_cold 3133ecb_cold
3134void
2246ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
2247{ 3136{
2248 int i; 3137 int i;
2249 3138
2250#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
2253 return; 3142 return;
2254#endif 3143#endif
2255 3144
2256#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
2257 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
2258 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
2259 { 3148 {
2260 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2261 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
2262 } 3151 }
2263#endif 3152#endif
2264 3153
2265#if EV_CHILD_ENABLE 3154#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev)) 3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2267 { 3156 {
2268 ev_ref (EV_A); /* child watcher */ 3157 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev); 3158 ev_signal_stop (EV_A_ &childev);
2270 } 3159 }
2271#endif 3160#endif
… …
2273 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
2274 { 3163 {
2275 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
2276 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
2277 3166
2278#if EV_USE_EVENTFD
2279 if (evfd >= 0)
2280 close (evfd);
2281#endif
2282
2283 if (evpipe [0] >= 0)
2284 {
2285 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2286 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2287 }
2288 } 3169 }
2289 3170
2290#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
2292 close (sigfd); 3173 close (sigfd);
… …
2299 3180
2300 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
2301 close (backend_fd); 3182 close (backend_fd);
2302 3183
2303#if EV_USE_IOCP 3184#if EV_USE_IOCP
2304 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2305#endif 3186#endif
2306#if EV_USE_PORT 3187#if EV_USE_PORT
2307 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2308#endif 3189#endif
2309#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2310 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);
2311#endif 3198#endif
2312#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2313 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2314#endif 3201#endif
2315#if EV_USE_POLL 3202#if EV_USE_POLL
2316 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2317#endif 3204#endif
2318#if EV_USE_SELECT 3205#if EV_USE_SELECT
2319 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2320#endif 3207#endif
2321 3208
2322 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2323 { 3210 {
2324 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2366 3253
2367inline_size void 3254inline_size void
2368loop_fork (EV_P) 3255loop_fork (EV_P)
2369{ 3256{
2370#if EV_USE_PORT 3257#if EV_USE_PORT
2371 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2372#endif 3259#endif
2373#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2374 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);
2375#endif 3268#endif
2376#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2377 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2378#endif 3271#endif
2379#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2380 infy_fork (EV_A); 3273 infy_fork (EV_A);
2381#endif 3274#endif
2382 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2383 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2384 { 3278 {
2385 /* 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 */
2386 3280
2387 ev_ref (EV_A); 3281 ev_ref (EV_A);
2388 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2389 3283
2390#if EV_USE_EVENTFD
2391 if (evfd >= 0)
2392 close (evfd);
2393#endif
2394
2395 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2396 {
2397 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2398 EV_WIN32_CLOSE_FD (evpipe [1]);
2399 }
2400 3286
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2402 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2403 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2404 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2405#endif
2406 } 3290 }
3291#endif
2407 3292
2408 postfork = 0; 3293 postfork = 0;
2409} 3294}
2410 3295
2411#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2412 3297
3298ecb_cold
2413struct ev_loop * ecb_cold 3299struct ev_loop *
2414ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2415{ 3301{
2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2417 3303
2418 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2419 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2426} 3312}
2427 3313
2428#endif /* multiplicity */ 3314#endif /* multiplicity */
2429 3315
2430#if EV_VERIFY 3316#if EV_VERIFY
2431static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2432verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2433{ 3320{
2434 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));
2435 3322
2436 if (w->pending) 3323 if (w->pending)
2437 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));
2438} 3325}
2439 3326
2440static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2441verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2442{ 3330{
2443 int i; 3331 int i;
2444 3332
2445 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2450 3338
2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2452 } 3340 }
2453} 3341}
2454 3342
2455static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2456array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2457{ 3346{
2458 while (cnt--) 3347 while (cnt--)
2459 { 3348 {
2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2463} 3352}
2464#endif 3353#endif
2465 3354
2466#if EV_FEATURE_API 3355#if EV_FEATURE_API
2467void ecb_cold 3356void ecb_cold
2468ev_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
2469{ 3358{
2470#if EV_VERIFY 3359#if EV_VERIFY
2471 int i; 3360 int i;
2472 WL w; 3361 WL w, w2;
2473 3362
2474 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
2475 3364
2476 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
2477 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
2478 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2479 3368
2480 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
2481 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
2482 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
2483 { 3375 {
2484 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
2485 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));
2486 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));
2487 } 3386 }
3387 }
2488 3388
2489 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
2490 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
2491 3391
2492#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
2538#endif 3438#endif
2539} 3439}
2540#endif 3440#endif
2541 3441
2542#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2543struct ev_loop * ecb_cold 3444struct ev_loop *
2544#else 3445#else
2545int 3446int
2546#endif 3447#endif
2547ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2548{ 3449{
2549 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2550 { 3451 {
2551#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2552 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2571 3472
2572 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2573} 3474}
2574 3475
2575void 3476void
2576ev_loop_fork (EV_P) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2577{ 3478{
2578 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2579} 3480}
2580 3481
2581/*****************************************************************************/ 3482/*****************************************************************************/
2582 3483
2583void 3484void
… …
2585{ 3486{
2586 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2587} 3488}
2588 3489
2589unsigned int 3490unsigned int
2590ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2591{ 3492{
2592 int pri; 3493 int pri;
2593 unsigned int count = 0; 3494 unsigned int count = 0;
2594 3495
2595 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2596 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2597 3498
2598 return count; 3499 return count;
2599} 3500}
2600 3501
2601void noinline 3502ecb_noinline
3503void
2602ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2603{ 3505{
2604 int pri; 3506 pendingpri = NUMPRI;
2605 3507
2606 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2607 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2608 { 3514 {
2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2610 3516
2611 p->w->pending = 0; 3517 p->w->pending = 0;
2612 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2613 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2614 } 3520 }
3521 }
3522 while (pendingpri);
2615} 3523}
2616 3524
2617#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2618/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2619/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2620inline_size void 3528inline_size void
2621idle_reify (EV_P) 3529idle_reify (EV_P)
2622{ 3530{
2623 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2624 { 3532 {
2625 int pri; 3533 int pri;
2626 3534
2627 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2628 { 3536 {
… …
2658 { 3566 {
2659 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2660 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2661 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2662 3570
2663 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.)));
2664 3572
2665 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2666 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2667 } 3575 }
2668 else 3576 else
… …
2677 } 3585 }
2678} 3586}
2679 3587
2680#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2681 3589
2682static void noinline 3590ecb_noinline
3591static void
2683periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2684{ 3593{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 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);
2687 3596
… …
2689 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2690 { 3599 {
2691 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2692 3601
2693 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2694 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2695 { 3604 {
2696 at = ev_rt_now; 3605 at = ev_rt_now;
2697 break; 3606 break;
2698 } 3607 }
2699 3608
… …
2709{ 3618{
2710 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2711 3620
2712 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2713 { 3622 {
2714 int feed_count = 0;
2715
2716 do 3623 do
2717 { 3624 {
2718 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2719 3626
2720 /*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)));*/
… …
2747 } 3654 }
2748} 3655}
2749 3656
2750/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2751/* 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? */
2752static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2753periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2754{ 3662{
2755 int i; 3663 int i;
2756 3664
2757 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2770 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2771} 3679}
2772#endif 3680#endif
2773 3681
2774/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2775static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2776timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2777{ 3686{
2778 int i; 3687 int i;
2779 3688
2780 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2789/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2790inline_speed void 3699inline_speed void
2791time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2792{ 3701{
2793#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2794 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2795 { 3704 {
2796 int i; 3705 int i;
2797 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2798 3707
2799 mn_now = get_clock (); 3708 mn_now = get_clock ();
2800 3709
2801 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2802 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2803 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)))
2804 { 3713 {
2805 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2806 return; 3715 return;
2807 } 3716 }
2808 3717
… …
2822 ev_tstamp diff; 3731 ev_tstamp diff;
2823 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2824 3733
2825 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2826 3735
2827 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)))
2828 return; /* all is well */ 3737 return; /* all is well */
2829 3738
2830 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2831 mn_now = get_clock (); 3740 mn_now = get_clock ();
2832 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2841 else 3750 else
2842#endif 3751#endif
2843 { 3752 {
2844 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2845 3754
2846 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)))
2847 { 3756 {
2848 /* 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 */
2849 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2850#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2851 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2854 3763
2855 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2856 } 3765 }
2857} 3766}
2858 3767
2859void 3768int
2860ev_run (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2861{ 3770{
2862#if EV_FEATURE_API 3771#if EV_FEATURE_API
2863 ++loop_depth; 3772 ++loop_depth;
2864#endif 3773#endif
… …
2874#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2875 ev_verify (EV_A); 3784 ev_verify (EV_A);
2876#endif 3785#endif
2877 3786
2878#ifndef _WIN32 3787#ifndef _WIN32
2879 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2880 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2881 { 3790 {
2882 curpid = getpid (); 3791 curpid = getpid ();
2883 postfork = 1; 3792 postfork = 1;
2884 } 3793 }
2885#endif 3794#endif
2886 3795
2887#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2888 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2889 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2890 if (forkcnt) 3799 if (forkcnt)
2891 { 3800 {
2892 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2893 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2894 } 3803 }
2895#endif 3804#endif
2896 3805
2897#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
2898 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2899 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2900 { 3809 {
2901 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2902 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2903 } 3812 }
2904#endif 3813#endif
2905 3814
2906 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2907 break; 3816 break;
2908 3817
2909 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2910 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2911 loop_fork (EV_A); 3820 loop_fork (EV_A);
2912 3821
2913 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2914 fd_reify (EV_A); 3823 fd_reify (EV_A);
2915 3824
… …
2920 3829
2921 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
2922 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
2923 3832
2924 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
2925 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2926 3835
2927 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
2928 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
2929 3838
2930 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 */
2931 3840
2932 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2933 { 3842 {
2934 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2935 3844
2936 if (timercnt) 3845 if (timercnt)
2937 { 3846 {
2938 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2939 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
2946 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2947 } 3856 }
2948#endif 3857#endif
2949 3858
2950 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2951 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2952 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2953 3862
2954 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* now there are two more special cases left, either we have
2955 /* to pass a minimum nonzero value to the backend */ 3864 * already-expired timers, so we should not sleep, or we have timers
3865 * that expire very soon, in which case we need to weait for a minimum
3866 * amount of time for some event loop backends
3867 */
2956 if (expect_false (waittime < backend_mintime)) 3868 if (ecb_expect_false (waittime < backend_mintime))
3869 waittime = waittime <= EV_TS_CONST (0.)
3870 ? EV_TS_CONST (0.)
2957 waittime = backend_mintime; 3871 : backend_mintime;
2958 3872
2959 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2960 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2961 { 3875 {
2962 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2963 3877
2964 if (sleeptime > waittime - backend_mintime) 3878 if (sleeptime > waittime - backend_mintime)
2965 sleeptime = waittime - backend_mintime; 3879 sleeptime = waittime - backend_mintime;
2966 3880
2967 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2968 { 3882 {
2969 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2970 waittime -= sleeptime; 3884 waittime -= sleeptime;
2971 } 3885 }
2972 } 3886 }
… …
2977#endif 3891#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2979 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981 3895
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2983 3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
2984 if (pipe_write_skipped) 3899 if (pipe_write_skipped)
2985 { 3900 {
2986 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3901 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 } 3903 }
2989 3904
2990
2991 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2992 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2993 } 3907 }
2994 3908
2995 /* queue pending timers and reschedule them */ 3909 /* queue pending timers and reschedule them */
… …
3003 idle_reify (EV_A); 3917 idle_reify (EV_A);
3004#endif 3918#endif
3005 3919
3006#if EV_CHECK_ENABLE 3920#if EV_CHECK_ENABLE
3007 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
3008 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
3009 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3010#endif 3924#endif
3011 3925
3012 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
3013 } 3927 }
3014 while (expect_true ( 3928 while (ecb_expect_true (
3015 activecnt 3929 activecnt
3016 && !loop_done 3930 && !loop_done
3017 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3018 )); 3932 ));
3019 3933
… …
3021 loop_done = EVBREAK_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
3022 3936
3023#if EV_FEATURE_API 3937#if EV_FEATURE_API
3024 --loop_depth; 3938 --loop_depth;
3025#endif 3939#endif
3026}
3027 3940
3941 return activecnt;
3942}
3943
3028void 3944void
3029ev_break (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
3030{ 3946{
3031 loop_done = how; 3947 loop_done = how;
3032} 3948}
3033 3949
3034void 3950void
3035ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
3036{ 3952{
3037 ++activecnt; 3953 ++activecnt;
3038} 3954}
3039 3955
3040void 3956void
3041ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
3042{ 3958{
3043 --activecnt; 3959 --activecnt;
3044} 3960}
3045 3961
3046void 3962void
3047ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
3048{ 3964{
3049 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
3050} 3966}
3051 3967
3052void 3968void
3053ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
3054{ 3970{
3055 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
3056} 3972}
3057 3973
3058void 3974void
3059ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
3060{ 3976{
3061 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
3062 3978
3063 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
3064 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3081inline_size void 3997inline_size void
3082wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
3083{ 3999{
3084 while (*head) 4000 while (*head)
3085 { 4001 {
3086 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
3087 { 4003 {
3088 *head = elem->next; 4004 *head = elem->next;
3089 break; 4005 break;
3090 } 4006 }
3091 4007
… …
3103 w->pending = 0; 4019 w->pending = 0;
3104 } 4020 }
3105} 4021}
3106 4022
3107int 4023int
3108ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3109{ 4025{
3110 W w_ = (W)w; 4026 W w_ = (W)w;
3111 int pending = w_->pending; 4027 int pending = w_->pending;
3112 4028
3113 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
3114 { 4030 {
3115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3116 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
3117 w_->pending = 0; 4033 w_->pending = 0;
3118 return p->events; 4034 return p->events;
… …
3145 w->active = 0; 4061 w->active = 0;
3146} 4062}
3147 4063
3148/*****************************************************************************/ 4064/*****************************************************************************/
3149 4065
3150void noinline 4066ecb_noinline
4067void
3151ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3152{ 4069{
3153 int fd = w->fd; 4070 int fd = w->fd;
3154 4071
3155 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
3156 return; 4073 return;
3157 4074
3158 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3159 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4076 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3160 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
3161 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3162 4082
3163 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3165 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
4086
4087 /* common bug, apparently */
4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3166 4089
3167 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4090 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3168 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
3169 4092
3170 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
3171} 4094}
3172 4095
3173void noinline 4096ecb_noinline
4097void
3174ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3175{ 4099{
3176 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
3177 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
3178 return; 4102 return;
3179 4103
3180 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4104 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3181 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
3182 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3183 4110
3184 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
3185 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
3186 4113
3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3188 4115
3189 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
3190} 4117}
3191 4118
3192void noinline 4119ecb_noinline
4120void
3193ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3194{ 4122{
3195 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
3196 return; 4124 return;
3197 4125
3198 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
3199 4127
3200 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4128 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3201 4129
3202 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
3203 4131
3204 ++timercnt; 4132 ++timercnt;
3205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3206 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3207 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
3208 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
3209 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
3210 4138
3211 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3212 4140
3213 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4141 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3214} 4142}
3215 4143
3216void noinline 4144ecb_noinline
4145void
3217ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3218{ 4147{
3219 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
3220 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
3221 return; 4150 return;
3222 4151
3223 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3224 4153
3225 { 4154 {
… …
3227 4156
3228 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4157 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3229 4158
3230 --timercnt; 4159 --timercnt;
3231 4160
3232 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
3233 { 4162 {
3234 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
3235 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
3236 } 4165 }
3237 } 4166 }
… …
3241 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
3242 4171
3243 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
3244} 4173}
3245 4174
3246void noinline 4175ecb_noinline
4176void
3247ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3248{ 4178{
3249 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
3250 4182
3251 if (ev_is_active (w)) 4183 if (ev_is_active (w))
3252 { 4184 {
3253 if (w->repeat) 4185 if (w->repeat)
3254 { 4186 {
… …
3267 4199
3268 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3269} 4201}
3270 4202
3271ev_tstamp 4203ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 4205{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3275} 4207}
3276 4208
3277#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
3278void noinline 4210ecb_noinline
4211void
3279ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3280{ 4213{
3281 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
3282 return; 4215 return;
3283 4216
3284 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
3285 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3286 else if (w->interval) 4219 else if (w->interval)
… …
3293 4226
3294 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3295 4228
3296 ++periodiccnt; 4229 ++periodiccnt;
3297 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3298 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3299 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3300 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
3301 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
3302 4235
3303 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3304 4237
3305 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4238 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3306} 4239}
3307 4240
3308void noinline 4241ecb_noinline
4242void
3309ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3310{ 4244{
3311 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
3313 return; 4247 return;
3314 4248
3315 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
3316 4250
3317 { 4251 {
… …
3319 4253
3320 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4254 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3321 4255
3322 --periodiccnt; 4256 --periodiccnt;
3323 4257
3324 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
3325 { 4259 {
3326 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
3327 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
3328 } 4262 }
3329 } 4263 }
… …
3331 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
3332 4266
3333 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3334} 4268}
3335 4269
3336void noinline 4270ecb_noinline
4271void
3337ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3338{ 4273{
3339 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
3340 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
3341 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
3342} 4277}
… …
3346# define SA_RESTART 0 4281# define SA_RESTART 0
3347#endif 4282#endif
3348 4283
3349#if EV_SIGNAL_ENABLE 4284#if EV_SIGNAL_ENABLE
3350 4285
3351void noinline 4286ecb_noinline
4287void
3352ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3353{ 4289{
3354 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
3355 return; 4291 return;
3356 4292
3357 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3358 4294
3359#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
3360 assert (("libev: a signal must not be attached to two different loops", 4296 assert (("libev: a signal must not be attached to two different loops",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3362 4298
3363 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
3364#endif 4301#endif
3365 4302
3366 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
3367 4304
3368#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
3427 } 4364 }
3428 4365
3429 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
3430} 4367}
3431 4368
3432void noinline 4369ecb_noinline
4370void
3433ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3434{ 4372{
3435 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3436 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3437 return; 4375 return;
3438 4376
3439 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3440 4378
3441 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3469#endif 4407#endif
3470 4408
3471#if EV_CHILD_ENABLE 4409#if EV_CHILD_ENABLE
3472 4410
3473void 4411void
3474ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3475{ 4413{
3476#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
3477 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3478#endif 4416#endif
3479 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
3480 return; 4418 return;
3481 4419
3482 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3483 4421
3484 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
… …
3486 4424
3487 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
3488} 4426}
3489 4427
3490void 4428void
3491ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3492{ 4430{
3493 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
3495 return; 4433 return;
3496 4434
3497 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3498 4436
3499 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3513 4451
3514#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
3515#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3516#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
3517 4455
3518static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4456ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3519 4457
3520#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
3521 4459
3522/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4460/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3524 4462
3525static void noinline 4463ecb_noinline
4464static void
3526infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
3527{ 4466{
3528 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); 4467 w->wd = inotify_add_watch (fs_fd, w->path,
4468 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4469 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4470 | IN_DONT_FOLLOW | IN_MASK_ADD);
3529 4471
3530 if (w->wd >= 0) 4472 if (w->wd >= 0)
3531 { 4473 {
3532 struct statfs sfs; 4474 struct statfs sfs;
3533 4475
… …
3537 4479
3538 if (!fs_2625) 4480 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
3542 || sfs.f_type == 0xEF53 /* ext2/3 */ 4486 || sfs.f_type == 0xEF53 /* ext2/3 */
4487 || sfs.f_type == 0x72b6 /* jffs2 */
4488 || sfs.f_type == 0x858458f6 /* ramfs */
4489 || sfs.f_type == 0x5346544e /* ntfs */
3543 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
3546 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else 4496 else
3549 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3550 } 4498 }
… …
3585 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3586 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
3587 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3588} 4536}
3589 4537
3590static void noinline 4538ecb_noinline
4539static void
3591infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
3592{ 4541{
3593 int slot; 4542 int slot;
3594 int wd = w->wd; 4543 int wd = w->wd;
3595 4544
… …
3602 4551
3603 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
3604 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
3605} 4554}
3606 4555
3607static void noinline 4556ecb_noinline
4557static void
3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3609{ 4559{
3610 if (slot < 0) 4560 if (slot < 0)
3611 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3648 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3650 } 4600 }
3651} 4601}
3652 4602
3653inline_size void ecb_cold 4603inline_size ecb_cold
4604void
3654ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3655{ 4606{
3656 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3657 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4608 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3658 */ 4609 */
… …
3663} 4614}
3664 4615
3665inline_size int 4616inline_size int
3666infy_newfd (void) 4617infy_newfd (void)
3667{ 4618{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0) 4621 if (fd >= 0)
3671 return fd; 4622 return fd;
3672#endif 4623#endif
3673 return inotify_init (); 4624 return inotify_init ();
… …
3748#else 4699#else
3749# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3750#endif 4701#endif
3751 4702
3752void 4703void
3753ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3754{ 4705{
3755 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3756 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3757 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3758 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3759} 4710}
3760 4711
3761static void noinline 4712ecb_noinline
4713static void
3762stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3763{ 4715{
3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3765 4717
3766 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3797 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3798 } 4750 }
3799} 4751}
3800 4752
3801void 4753void
3802ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3803{ 4755{
3804 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3805 return; 4757 return;
3806 4758
3807 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3808 4760
3809 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3828 4780
3829 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3830} 4782}
3831 4783
3832void 4784void
3833ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3834{ 4786{
3835 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3837 return; 4789 return;
3838 4790
3839 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3840 4792
3841#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3854} 4806}
3855#endif 4807#endif
3856 4808
3857#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3858void 4810void
3859ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3860{ 4812{
3861 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3862 return; 4814 return;
3863 4815
3864 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3865 4817
3866 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3869 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3870 4822
3871 ++idleall; 4823 ++idleall;
3872 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3873 4825
3874 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4826 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3875 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3876 } 4828 }
3877 4829
3878 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3879} 4831}
3880 4832
3881void 4833void
3882ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3883{ 4835{
3884 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3886 return; 4838 return;
3887 4839
3888 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3889 4841
3890 { 4842 {
… …
3901} 4853}
3902#endif 4854#endif
3903 4855
3904#if EV_PREPARE_ENABLE 4856#if EV_PREPARE_ENABLE
3905void 4857void
3906ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3907{ 4859{
3908 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3909 return; 4861 return;
3910 4862
3911 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3912 4864
3913 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3914 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3915 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3916 4868
3917 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3918} 4870}
3919 4871
3920void 4872void
3921ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3922{ 4874{
3923 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3924 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3925 return; 4877 return;
3926 4878
3927 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3928 4880
3929 { 4881 {
… …
3939} 4891}
3940#endif 4892#endif
3941 4893
3942#if EV_CHECK_ENABLE 4894#if EV_CHECK_ENABLE
3943void 4895void
3944ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3945{ 4897{
3946 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3947 return; 4899 return;
3948 4900
3949 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3950 4902
3951 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3952 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3953 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3954 4906
3955 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3956} 4908}
3957 4909
3958void 4910void
3959ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3960{ 4912{
3961 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3962 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3963 return; 4915 return;
3964 4916
3965 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3966 4918
3967 { 4919 {
… …
3976 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3977} 4929}
3978#endif 4930#endif
3979 4931
3980#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3981void noinline 4933ecb_noinline
4934void
3982ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3983{ 4936{
3984 ev_run (w->other, EVRUN_NOWAIT); 4937 ev_run (w->other, EVRUN_NOWAIT);
3985} 4938}
3986 4939
3987static void 4940static void
… …
4035 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
4036} 4989}
4037#endif 4990#endif
4038 4991
4039void 4992void
4040ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4041{ 4994{
4042 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
4043 return; 4996 return;
4044 4997
4045 { 4998 {
4046 EV_P = w->other; 4999 EV_P = w->other;
4047 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5000 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4066 5019
4067 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
4068} 5021}
4069 5022
4070void 5023void
4071ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4072{ 5025{
4073 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
4074 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
4075 return; 5028 return;
4076 5029
4077 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
4078 5031
4079 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
4086} 5039}
4087#endif 5040#endif
4088 5041
4089#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
4090void 5043void
4091ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4092{ 5045{
4093 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
4094 return; 5047 return;
4095 5048
4096 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
4097 5050
4098 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
4099 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4100 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
4101 5054
4102 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
4103} 5056}
4104 5057
4105void 5058void
4106ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4107{ 5060{
4108 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
4109 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
4110 return; 5063 return;
4111 5064
4112 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
4113 5066
4114 { 5067 {
… …
4124} 5077}
4125#endif 5078#endif
4126 5079
4127#if EV_CLEANUP_ENABLE 5080#if EV_CLEANUP_ENABLE
4128void 5081void
4129ev_cleanup_start (EV_P_ ev_cleanup *w) 5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4130{ 5083{
4131 if (expect_false (ev_is_active (w))) 5084 if (ecb_expect_false (ev_is_active (w)))
4132 return; 5085 return;
4133 5086
4134 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
4135 5088
4136 ev_start (EV_A_ (W)w, ++cleanupcnt); 5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
4137 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4138 cleanups [cleanupcnt - 1] = w; 5091 cleanups [cleanupcnt - 1] = w;
4139 5092
4140 /* cleanup watchers should never keep a refcount on the loop */ 5093 /* cleanup watchers should never keep a refcount on the loop */
4141 ev_unref (EV_A); 5094 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
4143} 5096}
4144 5097
4145void 5098void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w) 5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4147{ 5100{
4148 clear_pending (EV_A_ (W)w); 5101 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w))) 5102 if (ecb_expect_false (!ev_is_active (w)))
4150 return; 5103 return;
4151 5104
4152 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4153 ev_ref (EV_A); 5106 ev_ref (EV_A);
4154 5107
… …
4165} 5118}
4166#endif 5119#endif
4167 5120
4168#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
4169void 5122void
4170ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4171{ 5124{
4172 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4173 return; 5126 return;
4174 5127
4175 w->sent = 0; 5128 w->sent = 0;
4176 5129
4177 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
4178 5131
4179 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4180 5133
4181 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
4182 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4183 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
4184 5137
4185 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4186} 5139}
4187 5140
4188void 5141void
4189ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4190{ 5143{
4191 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4192 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4193 return; 5146 return;
4194 5147
4195 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4196 5149
4197 { 5150 {
… …
4205 5158
4206 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
4207} 5160}
4208 5161
4209void 5162void
4210ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4211{ 5164{
4212 w->sent = 1; 5165 w->sent = 1;
4213 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
4214} 5167}
4215#endif 5168#endif
… …
4252 5205
4253 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5206 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4254} 5207}
4255 5208
4256void 5209void
4257ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5210ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4258{ 5211{
4259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5212 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4260
4261 if (expect_false (!once))
4262 {
4263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4264 return;
4265 }
4266 5213
4267 once->cb = cb; 5214 once->cb = cb;
4268 once->arg = arg; 5215 once->arg = arg;
4269 5216
4270 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
4283} 5230}
4284 5231
4285/*****************************************************************************/ 5232/*****************************************************************************/
4286 5233
4287#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
4288void ecb_cold 5235ecb_cold
5236void
4289ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5237ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4290{ 5238{
4291 int i, j; 5239 int i, j;
4292 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
4293 5241
4294 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
4400 5348
4401#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
4402 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
4403#endif 5351#endif
4404 5352
4405EV_CPP(})
4406

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