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Comparing libev/ev.c (file contents):
Revision 1.408 by root, Fri Jan 27 22:28:49 2012 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>
… …
181 209
182#ifdef EV_H 210#ifdef EV_H
183# include EV_H 211# include EV_H
184#else 212#else
185# include "ev.h" 213# include "ev.h"
214#endif
215
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
186#endif 225#endif
187 226
188#ifndef _WIN32 227#ifndef _WIN32
189# include <sys/time.h> 228# include <sys/time.h>
190# include <sys/wait.h> 229# include <sys/wait.h>
191# include <unistd.h> 230# include <unistd.h>
192#else 231#else
193# include <io.h> 232# include <io.h>
194# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
195# include <windows.h> 235# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
198# endif 238# endif
199# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
200#endif 240#endif
201 241
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* 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 */
211 243
212/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 245#if defined EV_NSIG
214/* use what's provided */ 246/* use what's provided */
215#elif defined (NSIG) 247#elif defined NSIG
216# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 249#elif defined _NSIG
218# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 251#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 253#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 257#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 259#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 263#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 265#else
234# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 267#endif
239 268
240#ifndef EV_USE_FLOOR 269#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 270# define EV_USE_FLOOR 0
242#endif 271#endif
243 272
244#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 276# else
248# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
249# endif 278# endif
250#endif 279#endif
251 280
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
252#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 292# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 293# else
256# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
257# endif 295# endif
258#endif 296#endif
… …
295 333
296#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 335# define EV_USE_PORT 0
298#endif 336#endif
299 337
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
300#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 356# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 357# else
304# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
… …
345 399
346#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 402#endif
349 403
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 423# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
358# else 429# else
359# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
361# endif 432# endif
362#endif 433#endif
363 434
364/* 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 */
365 436
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
375#endif 440#endif
376 441
… …
382#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
383# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
385#endif 450#endif
386 451
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
387#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 462# if !defined _WIN32 && !defined __hpux
390# 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
391# endif 489# endif
392#endif 490#endif
393 491
394#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
395# include <sys/statfs.h> 493# include <sys/statfs.h>
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
401# endif 499# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 500#endif
407 501
408#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 504# include <stdint.h>
… …
441 uint32_t ssi_signo; 535 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
443}; 537};
444#endif 538#endif
445 539
446/**/ 540/*****************************************************************************/
447 541
448#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 544#else
451# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
… …
456 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
457 */ 551 */
458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 554
461#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) */
462#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) */
463 557
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
464#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)
465#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
466 575
467/* 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 */
468/* ECB.H BEGIN */ 577/* ECB.H BEGIN */
469/* 578/*
470 * libecb - http://software.schmorp.de/pkg/libecb 579 * libecb - http://software.schmorp.de/pkg/libecb
471 * 580 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 582 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 583 * All rights reserved.
475 * 584 *
476 * 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-
477 * tion, are permitted provided that the following conditions are met: 586 * tion, are permitted provided that the following conditions are met:
… …
491 * 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;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * 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
495 * 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.
496 */ 616 */
497 617
498#ifndef ECB_H 618#ifndef ECB_H
499#define ECB_H 619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
500 623
501#ifdef _WIN32 624#ifdef _WIN32
502 typedef signed char int8_t; 625 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 626 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 627 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 633 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 634 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 635 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 636 typedef unsigned __int64 uint64_t;
514 #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
515#else 647#else
516 #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
517#endif 666#endif
518 667
519/* many compilers define _GNUC_ to some versions but then only implement 668/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 669 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 670 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 671 * or so.
523 * 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
524 * 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.
525 */ 674 */
526#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 676 #define ECB_GCC_VERSION(major,minor) 0
529 #else 677#else
530 #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)))
531 #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
532#endif 720#endif
533 721
534/*****************************************************************************/ 722/*****************************************************************************/
535 723
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* 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 */
538 726
539#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
540 #define ECB_MEMORY_FENCE do { } while (0) 732 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 733#endif
542 734
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
543#ifndef ECB_MEMORY_FENCE 744#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 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")
545 #if __i386 || __i386__ 747 #if __i386 || __i386__
546 #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")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 751 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #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")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #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 */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
557 #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")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__ 771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #elif defined(__s390__) || defined(__s390x__) 777 #elif defined __s390__ || defined __s390x__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 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")
567 #endif 796 #endif
568 #endif 797 #endif
569#endif 798#endif
570 799
571#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
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
573 #define ECB_MEMORY_FENCE __sync_synchronize () 816 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
575 /*#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()
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #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 */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32) 828 #elif defined _WIN32
582 #include <WinNT.h> 829 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h> 832 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier () 833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
588 #define ECB_MEMORY_FENCE_RELEASE __machine_w_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)
589 #endif 850 #endif
590#endif 851#endif
591 852
592#ifndef ECB_MEMORY_FENCE 853#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS 854 #if !ECB_AVOID_PTHREADS
… …
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #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)
607 #endif 868 #endif
608#endif 869#endif
609 870
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif 873#endif
613 874
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif 877#endif
617 878
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
618/*****************************************************************************/ 883/*****************************************************************************/
619 884
620#define ECB_C99 (__STDC_VERSION__ >= 199901L) 885#if ECB_CPP
621
622#if __cplusplus
623 #define ecb_inline static inline 886 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
626#elif ECB_C99 889#elif ECB_C99
627 #define ecb_inline static inline 890 #define ecb_inline static inline
… …
641 904
642#define ECB_CONCAT_(a, b) a ## b 905#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a 907#define ECB_STRINGIFY_(a) # a
645#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))
646 910
647#define ecb_function_ ecb_inline 911#define ecb_function_ ecb_inline
648 912
649#if ECB_GCC_VERSION(3,1) 913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
650 #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)
651 #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)
652 #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)
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else 937#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
659#endif 939#endif
660 940
661/* no emulation for ecb_decltype */ 941/* no emulation for ecb_decltype */
662#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; };
663 #define ecb_decltype(x) __decltype(x) 945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
664#elif ECB_GCC_VERSION(3,0) 946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
665 #define ecb_decltype(x) __typeof(x) 947 #define ecb_decltype(x) __typeof__ (x)
666#endif 948#endif
667 949
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
668#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__)) 968#endif
969
670#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
672#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
673 985
674#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__)) 987 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__)) 988 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__)) 989 #define ecb_cold ecb_attribute ((__cold__))
… …
689/* for compatibility to the rest of the world */ 1001/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr) 1002#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr) 1003#define ecb_unlikely(expr) ecb_expect_false (expr)
692 1004
693/* count trailing zero bits and count # of one bits */ 1005/* count trailing zero bits and count # of one bits */
694#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))
695 /* 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 */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x) 1013 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x) 1014 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x) 1015 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */ 1016 /* no popcountll */
702#else 1017#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
704 ecb_function_ int 1019 ecb_function_ ecb_const int
705 ecb_ctz32 (uint32_t x) 1020 ecb_ctz32 (uint32_t x)
706 { 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
707 int r = 0; 1027 int r = 0;
708 1028
709 x &= ~x + 1; /* this isolates the lowest bit */ 1029 x &= ~x + 1; /* this isolates the lowest bit */
710 1030
711#if ECB_branchless_on_i386 1031#if ECB_branchless_on_i386
… …
721 if (x & 0xff00ff00) r += 8; 1041 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16; 1042 if (x & 0xffff0000) r += 16;
723#endif 1043#endif
724 1044
725 return r; 1045 return r;
1046#endif
726 } 1047 }
727 1048
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
729 ecb_function_ int 1050 ecb_function_ ecb_const int
730 ecb_ctz64 (uint64_t x) 1051 ecb_ctz64 (uint64_t x)
731 { 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
732 int shift = x & 0xffffffffU ? 0 : 32; 1058 int shift = x & 0xffffffff ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift; 1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
734 } 1061 }
735 1062
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
737 ecb_function_ int 1064 ecb_function_ ecb_const int
738 ecb_popcount32 (uint32_t x) 1065 ecb_popcount32 (uint32_t x)
739 { 1066 {
740 x -= (x >> 1) & 0x55555555; 1067 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f; 1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101; 1070 x *= 0x01010101;
744 1071
745 return x >> 24; 1072 return x >> 24;
746 } 1073 }
747 1074
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
749 ecb_function_ int ecb_ld32 (uint32_t x) 1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
750 { 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
751 int r = 0; 1083 int r = 0;
752 1084
753 if (x >> 16) { x >>= 16; r += 16; } 1085 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; } 1086 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; } 1087 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; } 1088 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; } 1089 if (x >> 1) { r += 1; }
758 1090
759 return r; 1091 return r;
1092#endif
760 } 1093 }
761 1094
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
763 ecb_function_ int ecb_ld64 (uint64_t x) 1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
764 { 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
765 int r = 0; 1103 int r = 0;
766 1104
767 if (x >> 32) { x >>= 32; r += 32; } 1105 if (x >> 32) { x >>= 32; r += 32; }
768 1106
769 return r + ecb_ld32 (x); 1107 return r + ecb_ld32 (x);
1108#endif
770 } 1109 }
771#endif 1110#endif
772 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
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
775{ 1119{
776 return ( (x * 0x0802U & 0x22110U) 1120 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778} 1122}
779 1123
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
782{ 1126{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8); 1130 x = ( x >> 8 ) | ( x << 8);
787 1131
788 return x; 1132 return x;
789} 1133}
790 1134
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
793{ 1137{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
800 return x; 1144 return x;
801} 1145}
802 1146
803/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */ 1148/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
806ecb_function_ int 1150ecb_function_ ecb_const int
807ecb_popcount64 (uint64_t x) 1151ecb_popcount64 (uint64_t x)
808{ 1152{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810} 1154}
811 1155
812ecb_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);
813ecb_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);
814ecb_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);
815ecb_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);
816ecb_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);
817ecb_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);
818ecb_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);
819ecb_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);
820 1164
821ecb_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); }
822ecb_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); }
823ecb_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); }
824ecb_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); }
825ecb_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); }
826ecb_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); }
827ecb_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); }
828ecb_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); }
829 1173
830#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
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
832 #define ecb_bswap32(x) __builtin_bswap32 (x) 1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #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)))
834#else 1187#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
836 ecb_function_ uint16_t 1189 ecb_function_ ecb_const uint16_t
837 ecb_bswap16 (uint16_t x) 1190 ecb_bswap16 (uint16_t x)
838 { 1191 {
839 return ecb_rotl16 (x, 8); 1192 return ecb_rotl16 (x, 8);
840 } 1193 }
841 1194
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
843 ecb_function_ uint32_t 1196 ecb_function_ ecb_const uint32_t
844 ecb_bswap32 (uint32_t x) 1197 ecb_bswap32 (uint32_t x)
845 { 1198 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 } 1200 }
848 1201
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
850 ecb_function_ uint64_t 1203 ecb_function_ ecb_const uint64_t
851 ecb_bswap64 (uint64_t x) 1204 ecb_bswap64 (uint64_t x)
852 { 1205 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 } 1207 }
855#endif 1208#endif
856 1209
857#if ECB_GCC_VERSION(4,5) 1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
858 #define ecb_unreachable() __builtin_unreachable () 1211 #define ecb_unreachable() __builtin_unreachable ()
859#else 1212#else
860 /* 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 :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
862 ecb_inline void ecb_unreachable (void) { } 1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
863#endif 1216#endif
864 1217
865/* try to tell the compiler that some condition is definitely true */ 1218/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
867 1220
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
869ecb_inline unsigned char 1222ecb_inline ecb_const uint32_t
870ecb_byteorder_helper (void) 1223ecb_byteorder_helper (void)
871{ 1224{
872 const uint32_t u = 0x11223344; 1225 /* the union code still generates code under pressure in gcc, */
873 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
874} 1247}
875 1248
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
877ecb_inline 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; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
879ecb_inline 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; }
880 1253
881#if ECB_GCC_VERSION(3,0) || ECB_C99 1254#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #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))
883#else 1256#else
884 #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)))
885#endif 1258#endif
886 1259
887#if __cplusplus 1260#if ECB_CPP
888 template<typename T> 1261 template<typename T>
889 static inline T ecb_div_rd (T val, T div) 1262 static inline T ecb_div_rd (T val, T div)
890 { 1263 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 } 1265 }
… …
909 } 1282 }
910#else 1283#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif 1285#endif
913 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
914#endif 1592#endif
915 1593
916/* ECB.H END */ 1594/* ECB.H END */
917 1595
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
919/* 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
920 * 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
921 * 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
922 * libev, in which cases the memory fences become nops. 1600 * libev, in which cases the memory fences become nops.
923 * alternatively, you can remove this #error and link against libpthread, 1601 * alternatively, you can remove this #error and link against libpthread,
924 * which will then provide the memory fences. 1602 * which will then provide the memory fences.
925 */ 1603 */
926# error "memory fences not defined for your architecture, please report" 1604# error "memory fences not defined for your architecture, please report"
… …
930# define ECB_MEMORY_FENCE do { } while (0) 1608# define ECB_MEMORY_FENCE do { } while (0)
931# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
932# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
933#endif 1611#endif
934 1612
935#define expect_false(cond) ecb_expect_false (cond)
936#define expect_true(cond) ecb_expect_true (cond)
937#define noinline ecb_noinline
938
939#define inline_size ecb_inline 1613#define inline_size ecb_inline
940 1614
941#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
942# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
943#else 1617#else
944# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
945#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/*****************************************************************************/
946 1686
947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
948 1688
949#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
950# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
951#else 1691#else
952# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
953#endif 1693#endif
954 1694
955#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
956#define EMPTY2(a,b) /* used to suppress some warnings */
957 1696
958typedef ev_watcher *W; 1697typedef ev_watcher *W;
959typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
960typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
961 1700
… …
986# include "ev_win32.c" 1725# include "ev_win32.c"
987#endif 1726#endif
988 1727
989/*****************************************************************************/ 1728/*****************************************************************************/
990 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
991/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
992 1735
993#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
994# include <math.h> 1737# include <math.h>
995# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
996#else 1739#else
997 1740
998#include <float.h> 1741#include <float.h>
999 1742
1000/* 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
1001static ev_tstamp noinline 1745static ev_tstamp
1002ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
1003{ 1747{
1004 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1007#else 1751#else
1008 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1009#endif 1753#endif
1010 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
1011 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
1012 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
1013 { 1765 {
1014 ev_tstamp f; 1766 ev_tstamp f;
1015 1767
1016 if (v == v - 1.) 1768 if (v == v - 1.)
1017 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
1018 1770
1019 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
1020 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
1021 } 1773 }
1022 1774
1023 /* special treatment for negative args? */
1024 if (expect_false (v < 0.))
1025 {
1026 ev_tstamp f = -ev_floor (-v);
1027
1028 return f - (f == v ? 0 : 1);
1029 }
1030
1031 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
1032 return (unsigned long)v; 1776 return (unsigned long)v;
1033} 1777}
1034 1778
1035#endif 1779#endif
… …
1038 1782
1039#ifdef __linux 1783#ifdef __linux
1040# include <sys/utsname.h> 1784# include <sys/utsname.h>
1041#endif 1785#endif
1042 1786
1043static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
1044ev_linux_version (void) 1789ev_linux_version (void)
1045{ 1790{
1046#ifdef __linux 1791#ifdef __linux
1047 unsigned int v = 0; 1792 unsigned int v = 0;
1048 struct utsname buf; 1793 struct utsname buf;
… …
1077} 1822}
1078 1823
1079/*****************************************************************************/ 1824/*****************************************************************************/
1080 1825
1081#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
1082static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1083ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
1084{ 1830{
1085 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
1086} 1832}
1087#endif 1833#endif
1088 1834
1089static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1090 1836
1091void ecb_cold 1837ecb_cold
1838void
1092ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1093{ 1840{
1094 syserr_cb = cb; 1841 syserr_cb = cb;
1095} 1842}
1096 1843
1097static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
1098ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
1099{ 1847{
1100 if (!msg) 1848 if (!msg)
1101 msg = "(libev) system error"; 1849 msg = "(libev) system error";
1102 1850
… …
1115 abort (); 1863 abort ();
1116 } 1864 }
1117} 1865}
1118 1866
1119static void * 1867static void *
1120ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1121{ 1869{
1122#if __GLIBC__
1123 return realloc (ptr, size);
1124#else
1125 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
1126 * 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
1127 * 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.
1128 */ 1875 */
1129 1876
1130 if (size) 1877 if (size)
1131 return realloc (ptr, size); 1878 return realloc (ptr, size);
1132 1879
1133 free (ptr); 1880 free (ptr);
1134 return 0; 1881 return 0;
1135#endif
1136} 1882}
1137 1883
1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1139 1885
1140void ecb_cold 1886ecb_cold
1887void
1141ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1142{ 1889{
1143 alloc = cb; 1890 alloc = cb;
1144} 1891}
1145 1892
1146inline_speed void * 1893inline_speed void *
… …
1173typedef struct 1920typedef struct
1174{ 1921{
1175 WL head; 1922 WL head;
1176 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
1177 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) */
1178 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 */
1179 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
1180#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
1181 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
1182#endif 1929#endif
1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1184 SOCKET handle; 1931 SOCKET handle;
… …
1238 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
1239 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1240 1987
1241#else 1988#else
1242 1989
1243 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1244 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
1245 #include "ev_vars.h" 1992 #include "ev_vars.h"
1246 #undef VAR 1993 #undef VAR
1247 1994
1248 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
1249 1996
1250#endif 1997#endif
1251 1998
1252#if EV_FEATURE_API 1999#if EV_FEATURE_API
1253# 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)
1254# 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)
1255# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
1256#else 2003#else
1257# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
1258# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
1259# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1263 2010
1264/*****************************************************************************/ 2011/*****************************************************************************/
1265 2012
1266#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
1267ev_tstamp 2014ev_tstamp
1268ev_time (void) 2015ev_time (void) EV_NOEXCEPT
1269{ 2016{
1270#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
1271 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
1272 { 2019 {
1273 struct timespec ts; 2020 struct timespec ts;
1274 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
1275 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
1276 } 2023 }
1277#endif 2024#endif
1278 2025
2026 {
1279 struct timeval tv; 2027 struct timeval tv;
1280 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
1281 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
1282} 2031}
1283#endif 2032#endif
1284 2033
1285inline_size ev_tstamp 2034inline_size ev_tstamp
1286get_clock (void) 2035get_clock (void)
1287{ 2036{
1288#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
1289 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
1290 { 2039 {
1291 struct timespec ts; 2040 struct timespec ts;
1292 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
1293 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
1294 } 2043 }
1295#endif 2044#endif
1296 2045
1297 return ev_time (); 2046 return ev_time ();
1298} 2047}
1299 2048
1300#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
1301ev_tstamp 2050ev_tstamp
1302ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
1303{ 2052{
1304 return ev_rt_now; 2053 return ev_rt_now;
1305} 2054}
1306#endif 2055#endif
1307 2056
1308void 2057void
1309ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1310{ 2059{
1311 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
1312 { 2061 {
1313#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
1314 struct timespec ts; 2063 struct timespec ts;
1315 2064
1316 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
1317 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
1318#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) */
1319 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1320#else 2071#else
1321 struct timeval tv; 2072 struct timeval tv;
1322 2073
1323 /* 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 */
1324 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1354 } 2105 }
1355 2106
1356 return ncur; 2107 return ncur;
1357} 2108}
1358 2109
1359static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
1360array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
1361{ 2113{
1362 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1363 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1364} 2116}
1365 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1366#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1367 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1368 2122
1369#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1370 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1371 { \ 2125 { \
1372 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1373 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1374 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1375 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1376 } 2130 }
1377 2131
1378#if 0 2132#if 0
1379#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1380 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1389 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
1390 2144
1391/*****************************************************************************/ 2145/*****************************************************************************/
1392 2146
1393/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1394static void noinline 2148ecb_noinline
2149static void
1395pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1396{ 2151{
1397} 2152}
1398 2153
1399void noinline 2154ecb_noinline
2155void
1400ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1401{ 2157{
1402 W w_ = (W)w; 2158 W w_ = (W)w;
1403 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1404 2160
1405 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1406 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1407 else 2163 else
1408 { 2164 {
1409 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1410 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1411 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1412 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1413 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
1414} 2172}
1415 2173
1416inline_speed void 2174inline_speed void
1417feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1418{ 2176{
1419 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1420 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1421} 2179}
1422 2180
1423inline_size void 2181inline_size void
1424feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1459inline_speed void 2217inline_speed void
1460fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1461{ 2219{
1462 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1463 2221
1464 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1465 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1466} 2224}
1467 2225
1468void 2226void
1469ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1470{ 2228{
1471 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1472 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1473} 2231}
1474 2232
… …
1511 ev_io *w; 2269 ev_io *w;
1512 2270
1513 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1514 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1515 2273
1516 anfd->reify = 0; 2274 anfd->reify = 0;
1517 2275
1518 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1519 { 2277 {
1520 anfd->events = 0; 2278 anfd->events = 0;
1521 2279
1522 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)
1523 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1532 2290
1533 fdchangecnt = 0; 2291 fdchangecnt = 0;
1534} 2292}
1535 2293
1536/* something about the given fd changed */ 2294/* something about the given fd changed */
1537inline_size void 2295inline_size
2296void
1538fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1539{ 2298{
1540 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1541 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1542 2301
1543 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1544 { 2303 {
1545 ++fdchangecnt; 2304 ++fdchangecnt;
1546 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1547 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1548 } 2307 }
1549} 2308}
1550 2309
1551/* 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 */
1552inline_speed void ecb_cold 2311inline_speed ecb_cold void
1553fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1554{ 2313{
1555 ev_io *w; 2314 ev_io *w;
1556 2315
1557 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1560 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);
1561 } 2320 }
1562} 2321}
1563 2322
1564/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1565inline_size int ecb_cold 2324inline_size ecb_cold int
1566fd_valid (int fd) 2325fd_valid (int fd)
1567{ 2326{
1568#ifdef _WIN32 2327#ifdef _WIN32
1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1570#else 2329#else
1571 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1572#endif 2331#endif
1573} 2332}
1574 2333
1575/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1576static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1577fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1578{ 2338{
1579 int fd; 2339 int fd;
1580 2340
1581 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1583 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1584 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1585} 2345}
1586 2346
1587/* 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 */
1588static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1589fd_enomem (EV_P) 2350fd_enomem (EV_P)
1590{ 2351{
1591 int fd; 2352 int fd;
1592 2353
1593 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1597 break; 2358 break;
1598 } 2359 }
1599} 2360}
1600 2361
1601/* 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 */
1602static void noinline 2363ecb_noinline
2364static void
1603fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1604{ 2366{
1605 int fd; 2367 int fd;
1606 2368
1607 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1660 ev_tstamp minat; 2422 ev_tstamp minat;
1661 ANHE *minpos; 2423 ANHE *minpos;
1662 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1663 2425
1664 /* find minimum child */ 2426 /* find minimum child */
1665 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1666 { 2428 {
1667 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1668 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));
1669 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));
1670 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));
1671 } 2433 }
1672 else if (pos < E) 2434 else if (pos < E)
1673 { 2435 {
1674 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1675 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));
1676 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));
1677 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));
1678 } 2440 }
1679 else 2441 else
1680 break; 2442 break;
1681 2443
1682 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1690 2452
1691 heap [k] = he; 2453 heap [k] = he;
1692 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1693} 2455}
1694 2456
1695#else /* 4HEAP */ 2457#else /* not 4HEAP */
1696 2458
1697#define HEAP0 1 2459#define HEAP0 1
1698#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1699#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1700 2462
… …
1788 2550
1789/*****************************************************************************/ 2551/*****************************************************************************/
1790 2552
1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1792 2554
1793static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1794evpipe_init (EV_P) 2557evpipe_init (EV_P)
1795{ 2558{
1796 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1797 { 2560 {
2561 int fds [2];
2562
1798# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1799 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1800 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1801 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1802 2568
1803 if (evfd >= 0) 2569 if (fds [1] < 0)
2570# endif
1804 { 2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
1805 evpipe [0] = -1; 2578 evpipe [0] = fds [0];
1806 fd_intern (evfd); /* doing it twice doesn't hurt */ 2579
1807 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));
1808 } 2630 }
1809 else 2631 else
1810# endif 2632#endif
1811 { 2633 {
1812 while (pipe (evpipe)) 2634#ifdef _WIN32
1813 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1814 2636 DWORD sent;
1815 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1816 fd_intern (evpipe [1]); 2638 buf.len = 1;
1817 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1818 } 2640#else
1819
1820 ev_io_start (EV_A_ &pipe_w);
1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1822 }
1823}
1824
1825inline_speed void
1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1827{
1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1845 old_errno = errno; /* save errno because write will clobber it */
1846
1847#if EV_USE_EVENTFD
1848 if (evfd >= 0)
1849 {
1850 uint64_t counter = 1;
1851 write (evfd, &counter, sizeof (uint64_t));
1852 }
1853 else
1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1861 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1862 } 2643 }
1863 2644
1864 errno = old_errno; 2645 errno = old_errno;
1865 } 2646 }
1866} 2647}
… …
1873 int i; 2654 int i;
1874 2655
1875 if (revents & EV_READ) 2656 if (revents & EV_READ)
1876 { 2657 {
1877#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1878 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1879 { 2660 {
1880 uint64_t counter; 2661 uint64_t counter;
1881 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1882 } 2663 }
1883 else 2664 else
1884#endif 2665#endif
1885 { 2666 {
1886 char dummy; 2667 char dummy[4];
1887 /* 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
1888 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
1889 } 2678 }
1890 } 2679 }
1891 2680
1892 pipe_write_skipped = 0; 2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1893 2684
1894#if EV_SIGNAL_ENABLE 2685#if EV_SIGNAL_ENABLE
1895 if (sig_pending) 2686 if (sig_pending)
1896 { 2687 {
1897 sig_pending = 0; 2688 sig_pending = 0;
1898 2689
2690 ECB_MEMORY_FENCE;
2691
1899 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1900 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1901 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1902 } 2695 }
1903#endif 2696#endif
1904 2697
1905#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1906 if (async_pending) 2699 if (async_pending)
1907 { 2700 {
1908 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1909 2704
1910 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1911 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1912 { 2707 {
1913 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1914 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1915 } 2711 }
1916 } 2712 }
1917#endif 2713#endif
1918} 2714}
1919 2715
1920/*****************************************************************************/ 2716/*****************************************************************************/
1921 2717
1922void 2718void
1923ev_feed_signal (int signum) 2719ev_feed_signal (int signum) EV_NOEXCEPT
1924{ 2720{
1925#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
1926 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
1927 2725
1928 if (!EV_A) 2726 if (!EV_A)
1929 return; 2727 return;
1930#endif 2728#endif
1931 2729
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
1937} 2732}
1938 2733
1939static void 2734static void
… …
1944#endif 2739#endif
1945 2740
1946 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
1947} 2742}
1948 2743
1949void noinline 2744ecb_noinline
2745void
1950ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1951{ 2747{
1952 WL w; 2748 WL w;
1953 2749
1954 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1955 return; 2751 return;
1956 2752
1957 --signum; 2753 --signum;
1958 2754
1959#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1960 /* 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 */
1961 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1962 2758
1963 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1964 return; 2760 return;
1965#endif 2761#endif
1966 2762
1967 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1968 2765
1969 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1970 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1971} 2768}
1972 2769
… …
2063# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
2064#endif 2861#endif
2065#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
2066# include "ev_epoll.c" 2863# include "ev_epoll.c"
2067#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
2068#if EV_USE_POLL 2871#if EV_USE_POLL
2069# include "ev_poll.c" 2872# include "ev_poll.c"
2070#endif 2873#endif
2071#if EV_USE_SELECT 2874#if EV_USE_SELECT
2072# include "ev_select.c" 2875# include "ev_select.c"
2073#endif 2876#endif
2074 2877
2075int ecb_cold 2878ecb_cold int
2076ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
2077{ 2880{
2078 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
2079} 2882}
2080 2883
2081int ecb_cold 2884ecb_cold int
2082ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
2083{ 2886{
2084 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
2085} 2888}
2086 2889
2087/* 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 */
2088int inline_size ecb_cold 2891inline_size ecb_cold int
2089enable_secure (void) 2892enable_secure (void)
2090{ 2893{
2091#ifdef _WIN32 2894#ifdef _WIN32
2092 return 0; 2895 return 0;
2093#else 2896#else
2094 return getuid () != geteuid () 2897 return getuid () != geteuid ()
2095 || getgid () != getegid (); 2898 || getgid () != getegid ();
2096#endif 2899#endif
2097} 2900}
2098 2901
2099unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2100ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
2101{ 2905{
2102 unsigned int flags = 0; 2906 unsigned int flags = 0;
2103 2907
2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2105 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2106 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;
2107 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2109 2915
2110 return flags; 2916 return flags;
2111} 2917}
2112 2918
2113unsigned int ecb_cold 2919ecb_cold
2920unsigned int
2114ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
2115{ 2922{
2116 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
2117 2924
2118#ifndef __NetBSD__ 2925#ifndef __NetBSD__
2119 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
2127#endif 2934#endif
2128#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
2129 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) */
2130#endif 2937#endif
2131 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
2132 return flags; 2948 return flags;
2133} 2949}
2134 2950
2135unsigned int ecb_cold 2951ecb_cold
2952unsigned int
2136ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
2137{ 2954{
2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2139 2956
2140 /* 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 */
2141 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 */
2142 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2143 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
2144 return flags; 2968 return flags;
2145} 2969}
2146 2970
2147unsigned int 2971unsigned int
2148ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
2149{ 2973{
2150 return backend; 2974 return backend;
2151} 2975}
2152 2976
2153#if EV_FEATURE_API 2977#if EV_FEATURE_API
2154unsigned int 2978unsigned int
2155ev_iteration (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
2156{ 2980{
2157 return loop_count; 2981 return loop_count;
2158} 2982}
2159 2983
2160unsigned int 2984unsigned int
2161ev_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
2162{ 2986{
2163 return loop_depth; 2987 return loop_depth;
2164} 2988}
2165 2989
2166void 2990void
2167ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2168{ 2992{
2169 io_blocktime = interval; 2993 io_blocktime = interval;
2170} 2994}
2171 2995
2172void 2996void
2173ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2174{ 2998{
2175 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
2176} 3000}
2177 3001
2178void 3002void
2179ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2180{ 3004{
2181 userdata = data; 3005 userdata = data;
2182} 3006}
2183 3007
2184void * 3008void *
2185ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
2186{ 3010{
2187 return userdata; 3011 return userdata;
2188} 3012}
2189 3013
2190void 3014void
2191ev_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
2192{ 3016{
2193 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
2194} 3018}
2195 3019
2196void 3020void
2197ev_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
2198{ 3022{
2199 release_cb = release; 3023 release_cb = release;
2200 acquire_cb = acquire; 3024 acquire_cb = acquire;
2201} 3025}
2202#endif 3026#endif
2203 3027
2204/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
2205static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
2206loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2207{ 3032{
2208 if (!backend) 3033 if (!backend)
2209 { 3034 {
2210 origflags = flags; 3035 origflags = flags;
2211 3036
… …
2256#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
2257 async_pending = 0; 3082 async_pending = 0;
2258#endif 3083#endif
2259 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
2261#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2263#endif 3090#endif
2264#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2267 3094
2268 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
2269 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
2270 3097
2271#if EV_USE_IOCP 3098#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif 3100#endif
2274#if EV_USE_PORT 3101#if EV_USE_PORT
2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2276#endif 3103#endif
2277#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
2278 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);
2279#endif 3112#endif
2280#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
2281 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2282#endif 3115#endif
2283#if EV_USE_POLL 3116#if EV_USE_POLL
2284 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2285#endif 3118#endif
2286#if EV_USE_SELECT 3119#if EV_USE_SELECT
2287 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2288#endif 3121#endif
2289 3122
2290 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
2291 3124
2292#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2295#endif 3128#endif
2296 } 3129 }
2297} 3130}
2298 3131
2299/* free up a loop structure */ 3132/* free up a loop structure */
2300void ecb_cold 3133ecb_cold
3134void
2301ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
2302{ 3136{
2303 int i; 3137 int i;
2304 3138
2305#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
2308 return; 3142 return;
2309#endif 3143#endif
2310 3144
2311#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
2312 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
2313 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
2314 { 3148 {
2315 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2316 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
2317 } 3151 }
2318#endif 3152#endif
2319 3153
2320#if EV_CHILD_ENABLE 3154#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev)) 3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2322 { 3156 {
2323 ev_ref (EV_A); /* child watcher */ 3157 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev); 3158 ev_signal_stop (EV_A_ &childev);
2325 } 3159 }
2326#endif 3160#endif
… …
2328 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
2329 { 3163 {
2330 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
2331 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
2332 3166
2333#if EV_USE_EVENTFD
2334 if (evfd >= 0)
2335 close (evfd);
2336#endif
2337
2338 if (evpipe [0] >= 0)
2339 {
2340 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2341 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2342 }
2343 } 3169 }
2344 3170
2345#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
2346 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
2347 close (sigfd); 3173 close (sigfd);
… …
2354 3180
2355 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
2356 close (backend_fd); 3182 close (backend_fd);
2357 3183
2358#if EV_USE_IOCP 3184#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif 3186#endif
2361#if EV_USE_PORT 3187#if EV_USE_PORT
2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2363#endif 3189#endif
2364#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2365 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);
2366#endif 3198#endif
2367#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2368 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2369#endif 3201#endif
2370#if EV_USE_POLL 3202#if EV_USE_POLL
2371 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2372#endif 3204#endif
2373#if EV_USE_SELECT 3205#if EV_USE_SELECT
2374 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2375#endif 3207#endif
2376 3208
2377 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2378 { 3210 {
2379 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2421 3253
2422inline_size void 3254inline_size void
2423loop_fork (EV_P) 3255loop_fork (EV_P)
2424{ 3256{
2425#if EV_USE_PORT 3257#if EV_USE_PORT
2426 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2427#endif 3259#endif
2428#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2429 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);
2430#endif 3268#endif
2431#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2432 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2433#endif 3271#endif
2434#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2435 infy_fork (EV_A); 3273 infy_fork (EV_A);
2436#endif 3274#endif
2437 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2438 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2439 { 3278 {
2440 /* 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 */
2441 3280
2442 ev_ref (EV_A); 3281 ev_ref (EV_A);
2443 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2444 3283
2445#if EV_USE_EVENTFD
2446 if (evfd >= 0)
2447 close (evfd);
2448#endif
2449
2450 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2451 {
2452 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2453 EV_WIN32_CLOSE_FD (evpipe [1]);
2454 }
2455 3286
2456#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2458 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2459 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2460#endif
2461 } 3290 }
3291#endif
2462 3292
2463 postfork = 0; 3293 postfork = 0;
2464} 3294}
2465 3295
2466#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2467 3297
3298ecb_cold
2468struct ev_loop * ecb_cold 3299struct ev_loop *
2469ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2470{ 3301{
2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2472 3303
2473 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2474 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2481} 3312}
2482 3313
2483#endif /* multiplicity */ 3314#endif /* multiplicity */
2484 3315
2485#if EV_VERIFY 3316#if EV_VERIFY
2486static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2487verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2488{ 3320{
2489 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));
2490 3322
2491 if (w->pending) 3323 if (w->pending)
2492 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));
2493} 3325}
2494 3326
2495static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2496verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2497{ 3330{
2498 int i; 3331 int i;
2499 3332
2500 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2505 3338
2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2507 } 3340 }
2508} 3341}
2509 3342
2510static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2511array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2512{ 3346{
2513 while (cnt--) 3347 while (cnt--)
2514 { 3348 {
2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2518} 3352}
2519#endif 3353#endif
2520 3354
2521#if EV_FEATURE_API 3355#if EV_FEATURE_API
2522void ecb_cold 3356void ecb_cold
2523ev_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
2524{ 3358{
2525#if EV_VERIFY 3359#if EV_VERIFY
2526 int i; 3360 int i;
2527 WL w; 3361 WL w, w2;
2528 3362
2529 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
2530 3364
2531 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
2532 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
2533 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2534 3368
2535 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
2536 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
2537 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
2538 { 3375 {
2539 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
2540 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));
2541 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));
2542 } 3386 }
3387 }
2543 3388
2544 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
2545 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
2546 3391
2547#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
2593#endif 3438#endif
2594} 3439}
2595#endif 3440#endif
2596 3441
2597#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2598struct ev_loop * ecb_cold 3444struct ev_loop *
2599#else 3445#else
2600int 3446int
2601#endif 3447#endif
2602ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2603{ 3449{
2604 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2605 { 3451 {
2606#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2607 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2626 3472
2627 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2628} 3474}
2629 3475
2630void 3476void
2631ev_loop_fork (EV_P) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2632{ 3478{
2633 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2634} 3480}
2635 3481
2636/*****************************************************************************/ 3482/*****************************************************************************/
2637 3483
2638void 3484void
… …
2640{ 3486{
2641 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2642} 3488}
2643 3489
2644unsigned int 3490unsigned int
2645ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2646{ 3492{
2647 int pri; 3493 int pri;
2648 unsigned int count = 0; 3494 unsigned int count = 0;
2649 3495
2650 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2651 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2652 3498
2653 return count; 3499 return count;
2654} 3500}
2655 3501
2656void noinline 3502ecb_noinline
3503void
2657ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2658{ 3505{
2659 int pri; 3506 pendingpri = NUMPRI;
2660 3507
2661 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2662 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2663 { 3514 {
2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2665 3516
2666 p->w->pending = 0; 3517 p->w->pending = 0;
2667 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2668 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2669 } 3520 }
3521 }
3522 while (pendingpri);
2670} 3523}
2671 3524
2672#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2673/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2674/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2675inline_size void 3528inline_size void
2676idle_reify (EV_P) 3529idle_reify (EV_P)
2677{ 3530{
2678 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2679 { 3532 {
2680 int pri; 3533 int pri;
2681 3534
2682 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2683 { 3536 {
… …
2713 { 3566 {
2714 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2715 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2716 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2717 3570
2718 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.)));
2719 3572
2720 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2721 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2722 } 3575 }
2723 else 3576 else
… …
2732 } 3585 }
2733} 3586}
2734 3587
2735#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2736 3589
2737static void noinline 3590ecb_noinline
3591static void
2738periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2739{ 3593{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 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);
2742 3596
… …
2744 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2745 { 3599 {
2746 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2747 3601
2748 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2749 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2750 { 3604 {
2751 at = ev_rt_now; 3605 at = ev_rt_now;
2752 break; 3606 break;
2753 } 3607 }
2754 3608
… …
2764{ 3618{
2765 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2766 3620
2767 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2768 { 3622 {
2769 int feed_count = 0;
2770
2771 do 3623 do
2772 { 3624 {
2773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2774 3626
2775 /*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)));*/
… …
2802 } 3654 }
2803} 3655}
2804 3656
2805/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2806/* 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? */
2807static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2808periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2809{ 3662{
2810 int i; 3663 int i;
2811 3664
2812 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2825 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2826} 3679}
2827#endif 3680#endif
2828 3681
2829/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2830static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2831timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2832{ 3686{
2833 int i; 3687 int i;
2834 3688
2835 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2844/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2845inline_speed void 3699inline_speed void
2846time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2847{ 3701{
2848#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2849 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2850 { 3704 {
2851 int i; 3705 int i;
2852 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2853 3707
2854 mn_now = get_clock (); 3708 mn_now = get_clock ();
2855 3709
2856 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2857 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2858 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)))
2859 { 3713 {
2860 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2861 return; 3715 return;
2862 } 3716 }
2863 3717
… …
2877 ev_tstamp diff; 3731 ev_tstamp diff;
2878 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2879 3733
2880 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2881 3735
2882 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)))
2883 return; /* all is well */ 3737 return; /* all is well */
2884 3738
2885 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2886 mn_now = get_clock (); 3740 mn_now = get_clock ();
2887 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2896 else 3750 else
2897#endif 3751#endif
2898 { 3752 {
2899 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2900 3754
2901 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)))
2902 { 3756 {
2903 /* 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 */
2904 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2905#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2906 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2909 3763
2910 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2911 } 3765 }
2912} 3766}
2913 3767
2914void 3768int
2915ev_run (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2916{ 3770{
2917#if EV_FEATURE_API 3771#if EV_FEATURE_API
2918 ++loop_depth; 3772 ++loop_depth;
2919#endif 3773#endif
… …
2929#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2930 ev_verify (EV_A); 3784 ev_verify (EV_A);
2931#endif 3785#endif
2932 3786
2933#ifndef _WIN32 3787#ifndef _WIN32
2934 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2935 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2936 { 3790 {
2937 curpid = getpid (); 3791 curpid = getpid ();
2938 postfork = 1; 3792 postfork = 1;
2939 } 3793 }
2940#endif 3794#endif
2941 3795
2942#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2943 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2944 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2945 if (forkcnt) 3799 if (forkcnt)
2946 { 3800 {
2947 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2948 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2949 } 3803 }
2950#endif 3804#endif
2951 3805
2952#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
2953 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2954 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2955 { 3809 {
2956 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2957 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2958 } 3812 }
2959#endif 3813#endif
2960 3814
2961 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2962 break; 3816 break;
2963 3817
2964 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2965 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2966 loop_fork (EV_A); 3820 loop_fork (EV_A);
2967 3821
2968 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2969 fd_reify (EV_A); 3823 fd_reify (EV_A);
2970 3824
… …
2975 3829
2976 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
2977 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
2978 3832
2979 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
2980 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2981 3835
2982 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
2983 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
2984 3838
2985 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 */
2986 3840
2987 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2988 { 3842 {
2989 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2990 3844
2991 if (timercnt) 3845 if (timercnt)
2992 { 3846 {
2993 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2994 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
3001 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
3002 } 3856 }
3003#endif 3857#endif
3004 3858
3005 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
3006 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
3007 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
3008 3862
3009 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* now there are two more special cases left, either we have
3010 /* 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 */
3011 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.)
3012 waittime = backend_mintime; 3871 : backend_mintime;
3013 3872
3014 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
3015 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
3016 { 3875 {
3017 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3018 3877
3019 if (sleeptime > waittime - backend_mintime) 3878 if (sleeptime > waittime - backend_mintime)
3020 sleeptime = waittime - backend_mintime; 3879 sleeptime = waittime - backend_mintime;
3021 3880
3022 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3023 { 3882 {
3024 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
3025 waittime -= sleeptime; 3884 waittime -= sleeptime;
3026 } 3885 }
3027 } 3886 }
… …
3034 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036 3895
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038 3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
3039 if (pipe_write_skipped) 3899 if (pipe_write_skipped)
3040 { 3900 {
3041 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)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 } 3903 }
3044 3904
3045
3046 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
3047 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
3048 } 3907 }
3049 3908
3050 /* queue pending timers and reschedule them */ 3909 /* queue pending timers and reschedule them */
… …
3058 idle_reify (EV_A); 3917 idle_reify (EV_A);
3059#endif 3918#endif
3060 3919
3061#if EV_CHECK_ENABLE 3920#if EV_CHECK_ENABLE
3062 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
3063 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
3064 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3065#endif 3924#endif
3066 3925
3067 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
3068 } 3927 }
3069 while (expect_true ( 3928 while (ecb_expect_true (
3070 activecnt 3929 activecnt
3071 && !loop_done 3930 && !loop_done
3072 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3073 )); 3932 ));
3074 3933
… …
3076 loop_done = EVBREAK_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
3077 3936
3078#if EV_FEATURE_API 3937#if EV_FEATURE_API
3079 --loop_depth; 3938 --loop_depth;
3080#endif 3939#endif
3081}
3082 3940
3941 return activecnt;
3942}
3943
3083void 3944void
3084ev_break (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
3085{ 3946{
3086 loop_done = how; 3947 loop_done = how;
3087} 3948}
3088 3949
3089void 3950void
3090ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
3091{ 3952{
3092 ++activecnt; 3953 ++activecnt;
3093} 3954}
3094 3955
3095void 3956void
3096ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
3097{ 3958{
3098 --activecnt; 3959 --activecnt;
3099} 3960}
3100 3961
3101void 3962void
3102ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
3103{ 3964{
3104 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
3105} 3966}
3106 3967
3107void 3968void
3108ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
3109{ 3970{
3110 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
3111} 3972}
3112 3973
3113void 3974void
3114ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
3115{ 3976{
3116 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
3117 3978
3118 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
3119 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3136inline_size void 3997inline_size void
3137wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
3138{ 3999{
3139 while (*head) 4000 while (*head)
3140 { 4001 {
3141 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
3142 { 4003 {
3143 *head = elem->next; 4004 *head = elem->next;
3144 break; 4005 break;
3145 } 4006 }
3146 4007
… …
3158 w->pending = 0; 4019 w->pending = 0;
3159 } 4020 }
3160} 4021}
3161 4022
3162int 4023int
3163ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3164{ 4025{
3165 W w_ = (W)w; 4026 W w_ = (W)w;
3166 int pending = w_->pending; 4027 int pending = w_->pending;
3167 4028
3168 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
3169 { 4030 {
3170 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3171 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
3172 w_->pending = 0; 4033 w_->pending = 0;
3173 return p->events; 4034 return p->events;
… …
3200 w->active = 0; 4061 w->active = 0;
3201} 4062}
3202 4063
3203/*****************************************************************************/ 4064/*****************************************************************************/
3204 4065
3205void noinline 4066ecb_noinline
4067void
3206ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3207{ 4069{
3208 int fd = w->fd; 4070 int fd = w->fd;
3209 4071
3210 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
3211 return; 4073 return;
3212 4074
3213 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3214 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))));
3215 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
3216 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3217 4082
3218 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
3219 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3220 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));
3221 4089
3222 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);
3223 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
3224 4092
3225 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
3226} 4094}
3227 4095
3228void noinline 4096ecb_noinline
4097void
3229ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3230{ 4099{
3231 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
3232 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
3233 return; 4102 return;
3234 4103
3235 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));
3236 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
3237 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3238 4110
3239 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
3240 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
3241 4113
3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3243 4115
3244 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
3245} 4117}
3246 4118
3247void noinline 4119ecb_noinline
4120void
3248ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3249{ 4122{
3250 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
3251 return; 4124 return;
3252 4125
3253 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
3254 4127
3255 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.));
3256 4129
3257 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
3258 4131
3259 ++timercnt; 4132 ++timercnt;
3260 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3261 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3262 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
3263 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
3264 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
3265 4138
3266 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3267 4140
3268 /*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));*/
3269} 4142}
3270 4143
3271void noinline 4144ecb_noinline
4145void
3272ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 4147{
3274 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
3275 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
3276 return; 4150 return;
3277 4151
3278 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3279 4153
3280 { 4154 {
… …
3282 4156
3283 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));
3284 4158
3285 --timercnt; 4159 --timercnt;
3286 4160
3287 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
3288 { 4162 {
3289 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
3290 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
3291 } 4165 }
3292 } 4166 }
… …
3296 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
3297 4171
3298 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
3299} 4173}
3300 4174
3301void noinline 4175ecb_noinline
4176void
3302ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3303{ 4178{
3304 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
3305 4180
3306 clear_pending (EV_A_ (W)w); 4181 clear_pending (EV_A_ (W)w);
3307 4182
… …
3324 4199
3325 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3326} 4201}
3327 4202
3328ev_tstamp 4203ev_tstamp
3329ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3330{ 4205{
3331 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.));
3332} 4207}
3333 4208
3334#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
3335void noinline 4210ecb_noinline
4211void
3336ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3337{ 4213{
3338 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
3339 return; 4215 return;
3340 4216
3341 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
3342 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3343 else if (w->interval) 4219 else if (w->interval)
… …
3350 4226
3351 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3352 4228
3353 ++periodiccnt; 4229 ++periodiccnt;
3354 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3355 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3356 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3357 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
3358 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
3359 4235
3360 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3361 4237
3362 /*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));*/
3363} 4239}
3364 4240
3365void noinline 4241ecb_noinline
4242void
3366ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3367{ 4244{
3368 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
3370 return; 4247 return;
3371 4248
3372 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
3373 4250
3374 { 4251 {
… …
3376 4253
3377 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));
3378 4255
3379 --periodiccnt; 4256 --periodiccnt;
3380 4257
3381 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
3382 { 4259 {
3383 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
3384 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
3385 } 4262 }
3386 } 4263 }
… …
3388 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
3389 4266
3390 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3391} 4268}
3392 4269
3393void noinline 4270ecb_noinline
4271void
3394ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3395{ 4273{
3396 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
3397 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
3398 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
3399} 4277}
… …
3403# define SA_RESTART 0 4281# define SA_RESTART 0
3404#endif 4282#endif
3405 4283
3406#if EV_SIGNAL_ENABLE 4284#if EV_SIGNAL_ENABLE
3407 4285
3408void noinline 4286ecb_noinline
4287void
3409ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3410{ 4289{
3411 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
3412 return; 4291 return;
3413 4292
3414 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));
3415 4294
3416#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
3417 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",
3418 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3419 4298
3420 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
3421#endif 4301#endif
3422 4302
3423 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
3424 4304
3425#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
3484 } 4364 }
3485 4365
3486 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
3487} 4367}
3488 4368
3489void noinline 4369ecb_noinline
4370void
3490ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3491{ 4372{
3492 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3493 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3494 return; 4375 return;
3495 4376
3496 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3497 4378
3498 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3526#endif 4407#endif
3527 4408
3528#if EV_CHILD_ENABLE 4409#if EV_CHILD_ENABLE
3529 4410
3530void 4411void
3531ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3532{ 4413{
3533#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
3534 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));
3535#endif 4416#endif
3536 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
3537 return; 4418 return;
3538 4419
3539 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3540 4421
3541 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
… …
3543 4424
3544 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
3545} 4426}
3546 4427
3547void 4428void
3548ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3549{ 4430{
3550 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
3551 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
3552 return; 4433 return;
3553 4434
3554 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3555 4436
3556 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3570 4451
3571#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
3572#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3573#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
3574 4455
3575static 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);
3576 4457
3577#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
3578 4459
3579/* 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 */
3580# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3581 4462
3582static void noinline 4463ecb_noinline
4464static void
3583infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
3584{ 4466{
3585 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);
3586 4471
3587 if (w->wd >= 0) 4472 if (w->wd >= 0)
3588 { 4473 {
3589 struct statfs sfs; 4474 struct statfs sfs;
3590 4475
… …
3594 4479
3595 if (!fs_2625) 4480 if (!fs_2625)
3596 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3597 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
3598 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
3599 || 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 */
3600 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
3601 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
3602 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
3603 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
3604 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3605 else 4496 else
3606 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 */
3607 } 4498 }
… …
3642 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3643 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
3644 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3645} 4536}
3646 4537
3647static void noinline 4538ecb_noinline
4539static void
3648infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
3649{ 4541{
3650 int slot; 4542 int slot;
3651 int wd = w->wd; 4543 int wd = w->wd;
3652 4544
… …
3659 4551
3660 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
3661 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
3662} 4554}
3663 4555
3664static void noinline 4556ecb_noinline
4557static void
3665infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3666{ 4559{
3667 if (slot < 0) 4560 if (slot < 0)
3668 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
3669 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3705 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3706 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3707 } 4600 }
3708} 4601}
3709 4602
3710inline_size void ecb_cold 4603inline_size ecb_cold
4604void
3711ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3712{ 4606{
3713 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3714 * 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
3715 */ 4609 */
… …
3720} 4614}
3721 4615
3722inline_size int 4616inline_size int
3723infy_newfd (void) 4617infy_newfd (void)
3724{ 4618{
3725#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3726 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3727 if (fd >= 0) 4621 if (fd >= 0)
3728 return fd; 4622 return fd;
3729#endif 4623#endif
3730 return inotify_init (); 4624 return inotify_init ();
… …
3805#else 4699#else
3806# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3807#endif 4701#endif
3808 4702
3809void 4703void
3810ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3811{ 4705{
3812 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3813 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3814 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3815 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3816} 4710}
3817 4711
3818static void noinline 4712ecb_noinline
4713static void
3819stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3820{ 4715{
3821 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3822 4717
3823 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3854 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3855 } 4750 }
3856} 4751}
3857 4752
3858void 4753void
3859ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3860{ 4755{
3861 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3862 return; 4757 return;
3863 4758
3864 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3865 4760
3866 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3885 4780
3886 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3887} 4782}
3888 4783
3889void 4784void
3890ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3891{ 4786{
3892 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3893 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3894 return; 4789 return;
3895 4790
3896 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3897 4792
3898#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3911} 4806}
3912#endif 4807#endif
3913 4808
3914#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3915void 4810void
3916ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3917{ 4812{
3918 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3919 return; 4814 return;
3920 4815
3921 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3922 4817
3923 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3926 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3927 4822
3928 ++idleall; 4823 ++idleall;
3929 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3930 4825
3931 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);
3932 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3933 } 4828 }
3934 4829
3935 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3936} 4831}
3937 4832
3938void 4833void
3939ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3940{ 4835{
3941 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3942 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3943 return; 4838 return;
3944 4839
3945 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3946 4841
3947 { 4842 {
… …
3958} 4853}
3959#endif 4854#endif
3960 4855
3961#if EV_PREPARE_ENABLE 4856#if EV_PREPARE_ENABLE
3962void 4857void
3963ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3964{ 4859{
3965 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3966 return; 4861 return;
3967 4862
3968 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3969 4864
3970 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3971 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3972 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3973 4868
3974 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3975} 4870}
3976 4871
3977void 4872void
3978ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3979{ 4874{
3980 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3981 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3982 return; 4877 return;
3983 4878
3984 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3985 4880
3986 { 4881 {
… …
3996} 4891}
3997#endif 4892#endif
3998 4893
3999#if EV_CHECK_ENABLE 4894#if EV_CHECK_ENABLE
4000void 4895void
4001ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4002{ 4897{
4003 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
4004 return; 4899 return;
4005 4900
4006 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
4007 4902
4008 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
4009 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4010 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
4011 4906
4012 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
4013} 4908}
4014 4909
4015void 4910void
4016ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4017{ 4912{
4018 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
4019 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
4020 return; 4915 return;
4021 4916
4022 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
4023 4918
4024 { 4919 {
… …
4033 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
4034} 4929}
4035#endif 4930#endif
4036 4931
4037#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
4038void noinline 4933ecb_noinline
4934void
4039ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4040{ 4936{
4041 ev_run (w->other, EVRUN_NOWAIT); 4937 ev_run (w->other, EVRUN_NOWAIT);
4042} 4938}
4043 4939
4044static void 4940static void
… …
4092 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
4093} 4989}
4094#endif 4990#endif
4095 4991
4096void 4992void
4097ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4098{ 4994{
4099 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
4100 return; 4996 return;
4101 4997
4102 { 4998 {
4103 EV_P = w->other; 4999 EV_P = w->other;
4104 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 ()));
… …
4123 5019
4124 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
4125} 5021}
4126 5022
4127void 5023void
4128ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4129{ 5025{
4130 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
4131 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
4132 return; 5028 return;
4133 5029
4134 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
4135 5031
4136 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
4143} 5039}
4144#endif 5040#endif
4145 5041
4146#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
4147void 5043void
4148ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4149{ 5045{
4150 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
4151 return; 5047 return;
4152 5048
4153 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
4154 5050
4155 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
4156 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4157 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
4158 5054
4159 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
4160} 5056}
4161 5057
4162void 5058void
4163ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4164{ 5060{
4165 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
4166 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
4167 return; 5063 return;
4168 5064
4169 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
4170 5066
4171 { 5067 {
… …
4181} 5077}
4182#endif 5078#endif
4183 5079
4184#if EV_CLEANUP_ENABLE 5080#if EV_CLEANUP_ENABLE
4185void 5081void
4186ev_cleanup_start (EV_P_ ev_cleanup *w) 5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4187{ 5083{
4188 if (expect_false (ev_is_active (w))) 5084 if (ecb_expect_false (ev_is_active (w)))
4189 return; 5085 return;
4190 5086
4191 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
4192 5088
4193 ev_start (EV_A_ (W)w, ++cleanupcnt); 5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4195 cleanups [cleanupcnt - 1] = w; 5091 cleanups [cleanupcnt - 1] = w;
4196 5092
4197 /* cleanup watchers should never keep a refcount on the loop */ 5093 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A); 5094 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
4200} 5096}
4201 5097
4202void 5098void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w) 5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4204{ 5100{
4205 clear_pending (EV_A_ (W)w); 5101 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 5102 if (ecb_expect_false (!ev_is_active (w)))
4207 return; 5103 return;
4208 5104
4209 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4210 ev_ref (EV_A); 5106 ev_ref (EV_A);
4211 5107
… …
4222} 5118}
4223#endif 5119#endif
4224 5120
4225#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
4226void 5122void
4227ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4228{ 5124{
4229 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4230 return; 5126 return;
4231 5127
4232 w->sent = 0; 5128 w->sent = 0;
4233 5129
4234 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
4235 5131
4236 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4237 5133
4238 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
4239 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4240 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
4241 5137
4242 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4243} 5139}
4244 5140
4245void 5141void
4246ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4247{ 5143{
4248 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4249 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4250 return; 5146 return;
4251 5147
4252 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4253 5149
4254 { 5150 {
… …
4262 5158
4263 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
4264} 5160}
4265 5161
4266void 5162void
4267ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5164{
4269 w->sent = 1; 5165 w->sent = 1;
4270 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
4271} 5167}
4272#endif 5168#endif
… …
4309 5205
4310 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));
4311} 5207}
4312 5208
4313void 5209void
4314ev_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
4315{ 5211{
4316 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));
4317
4318 if (expect_false (!once))
4319 {
4320 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4321 return;
4322 }
4323 5213
4324 once->cb = cb; 5214 once->cb = cb;
4325 once->arg = arg; 5215 once->arg = arg;
4326 5216
4327 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
4340} 5230}
4341 5231
4342/*****************************************************************************/ 5232/*****************************************************************************/
4343 5233
4344#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
4345void ecb_cold 5235ecb_cold
5236void
4346ev_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
4347{ 5238{
4348 int i, j; 5239 int i, j;
4349 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
4350 5241
4351 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))

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