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Comparing libev/ev.c (file contents):
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC vs.
Revision 1.514 by root, Fri Dec 20 05:20:50 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
165#endif 183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
166 194
167#include <stdlib.h> 195#include <stdlib.h>
168#include <string.h> 196#include <string.h>
169#include <fcntl.h> 197#include <fcntl.h>
170#include <stddef.h> 198#include <stddef.h>
… …
183# include EV_H 211# include EV_H
184#else 212#else
185# include "ev.h" 213# include "ev.h"
186#endif 214#endif
187 215
188EV_CPP(extern "C" {) 216#if EV_NO_THREADS
217# undef EV_NO_SMP
218# define EV_NO_SMP 1
219# undef ECB_NO_THREADS
220# define ECB_NO_THREADS 1
221#endif
222#if EV_NO_SMP
223# undef EV_NO_SMP
224# define ECB_NO_SMP 1
225#endif
189 226
190#ifndef _WIN32 227#ifndef _WIN32
191# include <sys/time.h> 228# include <sys/time.h>
192# include <sys/wait.h> 229# include <sys/wait.h>
193# include <unistd.h> 230# include <unistd.h>
194#else 231#else
195# include <io.h> 232# include <io.h>
196# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
197# include <windows.h> 235# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
200# endif 238# endif
201# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
202#endif 240#endif
203 241
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
213 243
214/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 245#if defined EV_NSIG
216/* use what's provided */ 246/* use what's provided */
217#elif defined (NSIG) 247#elif defined NSIG
218# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 249#elif defined _NSIG
220# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 251#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 253#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 257#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 259#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 263#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 265#else
236# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 267#endif
241 268
242#ifndef EV_USE_FLOOR 269#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 270# define EV_USE_FLOOR 0
244#endif 271#endif
245 272
246#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 276# else
250# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
251# endif 278# endif
252#endif 279#endif
253 280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
287# endif
288#endif
289
254#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 292# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 293# else
258# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
259# endif 295# endif
260#endif 296#endif
… …
297 333
298#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 335# define EV_USE_PORT 0
300#endif 336#endif
301 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
302#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 356# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 357# else
306# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
… …
347 399
348#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 402#endif
351 403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
418#endif
419
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 423# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
360# else 429# else
361# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
363# endif 432# endif
364#endif 433#endif
365 434
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 435/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 436
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
377#endif 440#endif
378 441
… …
384#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
385# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
387#endif 450#endif
388 451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
389#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 462# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 463# include <sys/select.h>
464# endif
465#endif
466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
393# endif 489# endif
394#endif 490#endif
395 491
396#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
397# include <sys/statfs.h> 493# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 495/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
403# endif 499# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 500#endif
409 501
410#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 503/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 504# include <stdint.h>
… …
443 uint32_t ssi_signo; 535 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
445}; 537};
446#endif 538#endif
447 539
448/**/ 540/*****************************************************************************/
449 541
450#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 544#else
453# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
459 */ 551 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 554
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
468 575
469/* the following are taken from libecb */ 576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 577/* ECB.H BEGIN */
578/*
579 * libecb - http://software.schmorp.de/pkg/libecb
580 *
581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
582 * Copyright (©) 2011 Emanuele Giaquinta
583 * All rights reserved.
584 *
585 * Redistribution and use in source and binary forms, with or without modifica-
586 * tion, are permitted provided that the following conditions are met:
587 *
588 * 1. Redistributions of source code must retain the above copyright notice,
589 * this list of conditions and the following disclaimer.
590 *
591 * 2. Redistributions in binary form must reproduce the above copyright
592 * notice, this list of conditions and the following disclaimer in the
593 * documentation and/or other materials provided with the distribution.
594 *
595 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
596 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
597 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
598 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
599 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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.
616 */
617
618#ifndef ECB_H
619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
623
624#ifdef _WIN32
625 typedef signed char int8_t;
626 typedef unsigned char uint8_t;
627 typedef signed short int16_t;
628 typedef unsigned short uint16_t;
629 typedef signed int int32_t;
630 typedef unsigned int uint32_t;
631 #if __GNUC__
632 typedef signed long long int64_t;
633 typedef unsigned long long uint64_t;
634 #else /* _MSC_VER || __BORLANDC__ */
635 typedef signed __int64 int64_t;
636 typedef unsigned __int64 uint64_t;
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
647#else
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
666#endif
471 667
472/* many compilers define _GNUC_ to some versions but then only implement 668/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 669 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 670 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 671 * or so.
476 * 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
477 * 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.
478 */ 674 */
479#ifndef ECB_GCC_VERSION
480 #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__
481 #define ECB_GCC_VERSION(major,minor) 0 676 #define ECB_GCC_VERSION(major,minor) 0
482 #else 677#else
483 #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)))
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
720#endif
721
722/*****************************************************************************/
723
724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
726
727#if ECB_NO_THREADS
728 #define ECB_NO_SMP 1
729#endif
730
731#if ECB_NO_SMP
732 #define ECB_MEMORY_FENCE do { } while (0)
733#endif
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
744#ifndef ECB_MEMORY_FENCE
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")
747 #if __i386 || __i386__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
751 #elif ECB_GCC_AMD64
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
777 #elif defined __s390__ || defined __s390x__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
783 #elif defined __alpha__
784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
796 #endif
484 #endif 797 #endif
485#endif 798#endif
486 799
487#if __cplusplus 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
815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
816 #define ECB_MEMORY_FENCE __sync_synchronize ()
817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
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()
823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
828 #elif defined _WIN32
829 #include <WinNT.h>
830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
832 #include <mbarrier.h>
833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
837 #elif __xlC__
838 #define ECB_MEMORY_FENCE __sync ()
839 #endif
840#endif
841
842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
850 #endif
851#endif
852
853#ifndef ECB_MEMORY_FENCE
854 #if !ECB_AVOID_PTHREADS
855 /*
856 * if you get undefined symbol references to pthread_mutex_lock,
857 * or failure to find pthread.h, then you should implement
858 * the ECB_MEMORY_FENCE operations for your cpu/compiler
859 * OR provide pthread.h and link against the posix thread library
860 * of your system.
861 */
862 #include <pthread.h>
863 #define ECB_NEEDS_PTHREADS 1
864 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
865
866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
868 #endif
869#endif
870
871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
873#endif
874
875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
877#endif
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
883/*****************************************************************************/
884
885#if ECB_CPP
488 #define ecb_inline static inline 886 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 887#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 888 #define ecb_inline static __inline__
491#elif ECB_C99 889#elif ECB_C99
492 #define ecb_inline static inline 890 #define ecb_inline static inline
493#else 891#else
494 #define ecb_inline static 892 #define ecb_inline static
495#endif 893#endif
496 894
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
508 #endif
509#endif
510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528
529#ifndef ECB_MEMORY_FENCE
530 #include <pthread.h>
531
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537
538#if ECB_GCC_VERSION(3,1) 895#if ECB_GCC_VERSION(3,3)
896 #define ecb_restrict __restrict__
897#elif ECB_C99
898 #define ecb_restrict restrict
899#else
900 #define ecb_restrict
901#endif
902
903typedef int ecb_bool;
904
905#define ECB_CONCAT_(a, b) a ## b
906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
907#define ECB_STRINGIFY_(a) # a
908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
910
911#define ecb_function_ ecb_inline
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
539 #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)
540 #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)
541 #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)
542 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
543#else 937#else
544 #define ecb_attribute(attrlist)
545 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality) 938 #define ecb_prefetch(addr,rw,locality)
548#endif 939#endif
549 940
941/* no emulation for ecb_decltype */
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; };
945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
947 #define ecb_decltype(x) __typeof__ (x)
948#endif
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
550#define ecb_noinline ecb_attribute ((__noinline__)) 967 #define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__)) 968#endif
969
552#define ecb_unused ecb_attribute ((__unused__)) 970#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__)) 971#define ecb_const ecb_attribute ((__const__))
554#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
555 985
556#if ECB_GCC_VERSION(4,3) 986#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__)) 987 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__)) 988 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__)) 989 #define ecb_cold ecb_attribute ((__cold__))
… …
566/* put around conditional expressions if you are very sure that the */ 996/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */ 997/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */ 998/* booleans, not the expression. */
569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 999#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 1000#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */ 1001/* for compatibility to the rest of the world */
1002#define ecb_likely(expr) ecb_expect_true (expr)
1003#define ecb_unlikely(expr) ecb_expect_false (expr)
572 1004
573#define expect_false(cond) ecb_expect_false (cond) 1005/* count trailing zero bits and count # of one bits */
574#define expect_true(cond) ecb_expect_true (cond) 1006#if ECB_GCC_VERSION(3,4) \
575#define noinline ecb_noinline 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))
1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1013 #define ecb_ctz32(x) __builtin_ctz (x)
1014 #define ecb_ctz64(x) __builtin_ctzll (x)
1015 #define ecb_popcount32(x) __builtin_popcount (x)
1016 /* no popcountll */
1017#else
1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1019 ecb_function_ ecb_const int
1020 ecb_ctz32 (uint32_t x)
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
1027 int r = 0;
1028
1029 x &= ~x + 1; /* this isolates the lowest bit */
1030
1031#if ECB_branchless_on_i386
1032 r += !!(x & 0xaaaaaaaa) << 0;
1033 r += !!(x & 0xcccccccc) << 1;
1034 r += !!(x & 0xf0f0f0f0) << 2;
1035 r += !!(x & 0xff00ff00) << 3;
1036 r += !!(x & 0xffff0000) << 4;
1037#else
1038 if (x & 0xaaaaaaaa) r += 1;
1039 if (x & 0xcccccccc) r += 2;
1040 if (x & 0xf0f0f0f0) r += 4;
1041 if (x & 0xff00ff00) r += 8;
1042 if (x & 0xffff0000) r += 16;
1043#endif
1044
1045 return r;
1046#endif
1047 }
1048
1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1050 ecb_function_ ecb_const int
1051 ecb_ctz64 (uint64_t x)
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
1058 int shift = x & 0xffffffff ? 0 : 32;
1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
1061 }
1062
1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1064 ecb_function_ ecb_const int
1065 ecb_popcount32 (uint32_t x)
1066 {
1067 x -= (x >> 1) & 0x55555555;
1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
1070 x *= 0x01010101;
1071
1072 return x >> 24;
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
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
1083 int r = 0;
1084
1085 if (x >> 16) { x >>= 16; r += 16; }
1086 if (x >> 8) { x >>= 8; r += 8; }
1087 if (x >> 4) { x >>= 4; r += 4; }
1088 if (x >> 2) { x >>= 2; r += 2; }
1089 if (x >> 1) { r += 1; }
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
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
1103 int r = 0;
1104
1105 if (x >> 32) { x >>= 32; r += 32; }
1106
1107 return r + ecb_ld32 (x);
1108#endif
1109 }
1110#endif
1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1119{
1120 return ( (x * 0x0802U & 0x22110U)
1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1122}
1123
1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1126{
1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1130 x = ( x >> 8 ) | ( x << 8);
1131
1132 return x;
1133}
1134
1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1137{
1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1142 x = ( x >> 16 ) | ( x << 16);
1143
1144 return x;
1145}
1146
1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
1148/* so for this version we are lazy */
1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1150ecb_function_ ecb_const int
1151ecb_popcount64 (uint64_t x)
1152{
1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1154}
1155
1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1164
1165ecb_inline ecb_const uint8_t ecb_rotl8 (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); }
1167ecb_inline ecb_const uint16_t ecb_rotl16 (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); }
1169ecb_inline ecb_const uint32_t ecb_rotl32 (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); }
1171ecb_inline ecb_const uint64_t ecb_rotl64 (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); }
1173
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
1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
1180 #define ecb_bswap32(x) __builtin_bswap32 (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)))
1187#else
1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1189 ecb_function_ ecb_const uint16_t
1190 ecb_bswap16 (uint16_t x)
1191 {
1192 return ecb_rotl16 (x, 8);
1193 }
1194
1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1196 ecb_function_ ecb_const uint32_t
1197 ecb_bswap32 (uint32_t x)
1198 {
1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1200 }
1201
1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1203 ecb_function_ ecb_const uint64_t
1204 ecb_bswap64 (uint64_t x)
1205 {
1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1207 }
1208#endif
1209
1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1211 #define ecb_unreachable() __builtin_unreachable ()
1212#else
1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1216#endif
1217
1218/* try to tell the compiler that some condition is definitely true */
1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1220
1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1222ecb_inline ecb_const uint32_t
1223ecb_byteorder_helper (void)
1224{
1225 /* the union code still generates code under pressure in gcc, */
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
1247}
1248
1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1253
1254#if ECB_GCC_VERSION(3,0) || ECB_C99
1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1256#else
1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1258#endif
1259
1260#if ECB_CPP
1261 template<typename T>
1262 static inline T ecb_div_rd (T val, T div)
1263 {
1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1265 }
1266 template<typename T>
1267 static inline T ecb_div_ru (T val, T div)
1268 {
1269 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1270 }
1271#else
1272 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1273 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1274#endif
1275
1276#if ecb_cplusplus_does_not_suck
1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1278 template<typename T, int N>
1279 static inline int ecb_array_length (const T (&arr)[N])
1280 {
1281 return N;
1282 }
1283#else
1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1285#endif
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
1592#endif
1593
1594/* ECB.H END */
1595
1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1597/* if your architecture doesn't need memory fences, e.g. because it is
1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1600 * libev, in which cases the memory fences become nops.
1601 * alternatively, you can remove this #error and link against libpthread,
1602 * which will then provide the memory fences.
1603 */
1604# error "memory fences not defined for your architecture, please report"
1605#endif
1606
1607#ifndef ECB_MEMORY_FENCE
1608# define ECB_MEMORY_FENCE do { } while (0)
1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1611#endif
576 1612
577#define inline_size ecb_inline 1613#define inline_size ecb_inline
578 1614
579#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
580# define inline_speed ecb_inline 1616# define inline_speed ecb_inline
581#else 1617#else
582# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
583#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/*****************************************************************************/
584 1686
585#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
586 1688
587#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
588# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
589#else 1691#else
590# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
591#endif 1693#endif
592 1694
593#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
594#define EMPTY2(a,b) /* used to suppress some warnings */
595 1696
596typedef ev_watcher *W; 1697typedef ev_watcher *W;
597typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
598typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
599 1700
… …
624# include "ev_win32.c" 1725# include "ev_win32.c"
625#endif 1726#endif
626 1727
627/*****************************************************************************/ 1728/*****************************************************************************/
628 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
629/* define a suitable floor function (only used by periodics atm) */ 1734/* define a suitable floor function (only used by periodics atm) */
630 1735
631#if EV_USE_FLOOR 1736#if EV_USE_FLOOR
632# include <math.h> 1737# include <math.h>
633# define ev_floor(v) floor (v) 1738# define ev_floor(v) floor (v)
634#else 1739#else
635 1740
636#include <float.h> 1741#include <float.h>
637 1742
638/* 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
639static ev_tstamp noinline 1745static ev_tstamp
640ev_floor (ev_tstamp v) 1746ev_floor (ev_tstamp v)
641{ 1747{
642 /* the choice of shift factor is not terribly important */ 1748 /* the choice of shift factor is not terribly important */
643#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
645#else 1751#else
646 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
647#endif 1753#endif
648 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
649 /* argument too large for an unsigned long? */ 1763 /* argument too large for an unsigned long? then reduce it */
650 if (expect_false (v >= shift)) 1764 if (ecb_expect_false (v >= shift))
651 { 1765 {
652 ev_tstamp f; 1766 ev_tstamp f;
653 1767
654 if (v == v - 1.) 1768 if (v == v - 1.)
655 return v; /* very large number */ 1769 return v; /* very large numbers are assumed to be integer */
656 1770
657 f = shift * ev_floor (v * (1. / shift)); 1771 f = shift * ev_floor (v * (1. / shift));
658 return f + ev_floor (v - f); 1772 return f + ev_floor (v - f);
659 } 1773 }
660 1774
661 /* special treatment for negative args? */
662 if (expect_false (v < 0.))
663 {
664 ev_tstamp f = -ev_floor (-v);
665
666 return f - (f == v ? 0 : 1);
667 }
668
669 /* fits into an unsigned long */ 1775 /* fits into an unsigned long */
670 return (unsigned long)v; 1776 return (unsigned long)v;
671} 1777}
672 1778
673#endif 1779#endif
… …
676 1782
677#ifdef __linux 1783#ifdef __linux
678# include <sys/utsname.h> 1784# include <sys/utsname.h>
679#endif 1785#endif
680 1786
681static unsigned int noinline ecb_cold 1787ecb_noinline ecb_cold
1788static unsigned int
682ev_linux_version (void) 1789ev_linux_version (void)
683{ 1790{
684#ifdef __linux 1791#ifdef __linux
685 unsigned int v = 0; 1792 unsigned int v = 0;
686 struct utsname buf; 1793 struct utsname buf;
… …
715} 1822}
716 1823
717/*****************************************************************************/ 1824/*****************************************************************************/
718 1825
719#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
720static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
721ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
722{ 1830{
723 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
724} 1832}
725#endif 1833#endif
726 1834
727static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
728 1836
729void ecb_cold 1837ecb_cold
1838void
730ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
731{ 1840{
732 syserr_cb = cb; 1841 syserr_cb = cb;
733} 1842}
734 1843
735static void noinline ecb_cold 1844ecb_noinline ecb_cold
1845static void
736ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
737{ 1847{
738 if (!msg) 1848 if (!msg)
739 msg = "(libev) system error"; 1849 msg = "(libev) system error";
740 1850
… …
753 abort (); 1863 abort ();
754 } 1864 }
755} 1865}
756 1866
757static void * 1867static void *
758ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
759{ 1869{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
763 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
764 * 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
765 * 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.
766 */ 1875 */
767 1876
768 if (size) 1877 if (size)
769 return realloc (ptr, size); 1878 return realloc (ptr, size);
770 1879
771 free (ptr); 1880 free (ptr);
772 return 0; 1881 return 0;
773#endif
774} 1882}
775 1883
776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
777 1885
778void ecb_cold 1886ecb_cold
1887void
779ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
780{ 1889{
781 alloc = cb; 1890 alloc = cb;
782} 1891}
783 1892
784inline_speed void * 1893inline_speed void *
… …
811typedef struct 1920typedef struct
812{ 1921{
813 WL head; 1922 WL head;
814 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
815 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) */
816 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 */
817 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
818#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
819 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
820#endif 1929#endif
821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
822 SOCKET handle; 1931 SOCKET handle;
… …
872 #undef VAR 1981 #undef VAR
873 }; 1982 };
874 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
875 1984
876 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
877 struct ev_loop *ev_default_loop_ptr; 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
878 1987
879#else 1988#else
880 1989
881 ev_tstamp ev_rt_now; 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
882 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
883 #include "ev_vars.h" 1992 #include "ev_vars.h"
884 #undef VAR 1993 #undef VAR
885 1994
886 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
887 1996
888#endif 1997#endif
889 1998
890#if EV_FEATURE_API 1999#if EV_FEATURE_API
891# 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)
892# 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)
893# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
894#else 2003#else
895# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
896# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
897# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
901 2010
902/*****************************************************************************/ 2011/*****************************************************************************/
903 2012
904#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
905ev_tstamp 2014ev_tstamp
906ev_time (void) 2015ev_time (void) EV_NOEXCEPT
907{ 2016{
908#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
909 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
910 { 2019 {
911 struct timespec ts; 2020 struct timespec ts;
912 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
913 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
914 } 2023 }
915#endif 2024#endif
916 2025
2026 {
917 struct timeval tv; 2027 struct timeval tv;
918 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
919 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
920} 2031}
921#endif 2032#endif
922 2033
923inline_size ev_tstamp 2034inline_size ev_tstamp
924get_clock (void) 2035get_clock (void)
925{ 2036{
926#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
927 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
928 { 2039 {
929 struct timespec ts; 2040 struct timespec ts;
930 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
931 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
932 } 2043 }
933#endif 2044#endif
934 2045
935 return ev_time (); 2046 return ev_time ();
936} 2047}
937 2048
938#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
939ev_tstamp 2050ev_tstamp
940ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
941{ 2052{
942 return ev_rt_now; 2053 return ev_rt_now;
943} 2054}
944#endif 2055#endif
945 2056
946void 2057void
947ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
948{ 2059{
949 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
950 { 2061 {
951#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
952 struct timespec ts; 2063 struct timespec ts;
953 2064
954 EV_TS_SET (ts, delay); 2065 EV_TS_SET (ts, delay);
955 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
956#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) */
957 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
958#else 2071#else
959 struct timeval tv; 2072 struct timeval tv;
960 2073
961 /* 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 */
962 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
… …
980 2093
981 do 2094 do
982 ncur <<= 1; 2095 ncur <<= 1;
983 while (cnt > ncur); 2096 while (cnt > ncur);
984 2097
985 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2098 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
986 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
987 { 2100 {
988 ncur *= elem; 2101 ncur *= elem;
989 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2102 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
990 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
992 } 2105 }
993 2106
994 return ncur; 2107 return ncur;
995} 2108}
996 2109
997static void * noinline ecb_cold 2110ecb_noinline ecb_cold
2111static void *
998array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
999{ 2113{
1000 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
1001 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
1002} 2116}
1003 2117
2118#define array_needsize_noinit(base,offset,count)
2119
1004#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
1005 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1006 2122
1007#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
1008 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
1009 { \ 2125 { \
1010 int ecb_unused ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
1011 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
1012 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
1013 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
1014 } 2130 }
1015 2131
1016#if 0 2132#if 0
1017#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
1018 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1027 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
1028 2144
1029/*****************************************************************************/ 2145/*****************************************************************************/
1030 2146
1031/* dummy callback for pending events */ 2147/* dummy callback for pending events */
1032static void noinline 2148ecb_noinline
2149static void
1033pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
1034{ 2151{
1035} 2152}
1036 2153
1037void noinline 2154ecb_noinline
2155void
1038ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1039{ 2157{
1040 W w_ = (W)w; 2158 W w_ = (W)w;
1041 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
1042 2160
1043 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
1044 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
1045 else 2163 else
1046 { 2164 {
1047 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
1048 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1049 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
1050 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
1051 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
1052} 2172}
1053 2173
1054inline_speed void 2174inline_speed void
1055feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
1056{ 2176{
1057 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1058 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
1059} 2179}
1060 2180
1061inline_size void 2181inline_size void
1062feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
1097inline_speed void 2217inline_speed void
1098fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
1099{ 2219{
1100 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
1101 2221
1102 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
1103 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
1104} 2224}
1105 2225
1106void 2226void
1107ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1108{ 2228{
1109 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
1110 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
1111} 2231}
1112 2232
… …
1149 ev_io *w; 2269 ev_io *w;
1150 2270
1151 unsigned char o_events = anfd->events; 2271 unsigned char o_events = anfd->events;
1152 unsigned char o_reify = anfd->reify; 2272 unsigned char o_reify = anfd->reify;
1153 2273
1154 anfd->reify = 0; 2274 anfd->reify = 0;
1155 2275
1156 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1157 { 2277 {
1158 anfd->events = 0; 2278 anfd->events = 0;
1159 2279
1160 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)
1161 anfd->events |= (unsigned char)w->events; 2281 anfd->events |= (unsigned char)w->events;
… …
1170 2290
1171 fdchangecnt = 0; 2291 fdchangecnt = 0;
1172} 2292}
1173 2293
1174/* something about the given fd changed */ 2294/* something about the given fd changed */
1175inline_size void 2295inline_size
2296void
1176fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
1177{ 2298{
1178 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
1179 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
1180 2301
1181 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
1182 { 2303 {
1183 ++fdchangecnt; 2304 ++fdchangecnt;
1184 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1185 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
1186 } 2307 }
1187} 2308}
1188 2309
1189/* 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 */
1190inline_speed void ecb_cold 2311inline_speed ecb_cold void
1191fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
1192{ 2313{
1193 ev_io *w; 2314 ev_io *w;
1194 2315
1195 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1198 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);
1199 } 2320 }
1200} 2321}
1201 2322
1202/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1203inline_size int ecb_cold 2324inline_size ecb_cold int
1204fd_valid (int fd) 2325fd_valid (int fd)
1205{ 2326{
1206#ifdef _WIN32 2327#ifdef _WIN32
1207 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1208#else 2329#else
1209 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1210#endif 2331#endif
1211} 2332}
1212 2333
1213/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1214static void noinline ecb_cold 2335ecb_noinline ecb_cold
2336static void
1215fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1216{ 2338{
1217 int fd; 2339 int fd;
1218 2340
1219 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1221 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1222 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1223} 2345}
1224 2346
1225/* 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 */
1226static void noinline ecb_cold 2348ecb_noinline ecb_cold
2349static void
1227fd_enomem (EV_P) 2350fd_enomem (EV_P)
1228{ 2351{
1229 int fd; 2352 int fd;
1230 2353
1231 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1235 break; 2358 break;
1236 } 2359 }
1237} 2360}
1238 2361
1239/* 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 */
1240static void noinline 2363ecb_noinline
2364static void
1241fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1242{ 2366{
1243 int fd; 2367 int fd;
1244 2368
1245 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1298 ev_tstamp minat; 2422 ev_tstamp minat;
1299 ANHE *minpos; 2423 ANHE *minpos;
1300 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1301 2425
1302 /* find minimum child */ 2426 /* find minimum child */
1303 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1304 { 2428 {
1305 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1306 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));
1307 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));
1308 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));
1309 } 2433 }
1310 else if (pos < E) 2434 else if (pos < E)
1311 { 2435 {
1312 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1313 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));
1314 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));
1315 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));
1316 } 2440 }
1317 else 2441 else
1318 break; 2442 break;
1319 2443
1320 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1328 2452
1329 heap [k] = he; 2453 heap [k] = he;
1330 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1331} 2455}
1332 2456
1333#else /* 4HEAP */ 2457#else /* not 4HEAP */
1334 2458
1335#define HEAP0 1 2459#define HEAP0 1
1336#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1337#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1338 2462
… …
1426 2550
1427/*****************************************************************************/ 2551/*****************************************************************************/
1428 2552
1429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1430 2554
1431static void noinline ecb_cold 2555ecb_noinline ecb_cold
2556static void
1432evpipe_init (EV_P) 2557evpipe_init (EV_P)
1433{ 2558{
1434 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1435 { 2560 {
2561 int fds [2];
2562
1436# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1438 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1439 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1440 2568
1441 if (evfd >= 0) 2569 if (fds [1] < 0)
2570# endif
1442 { 2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
1443 evpipe [0] = -1; 2578 evpipe [0] = fds [0];
1444 fd_intern (evfd); /* doing it twice doesn't hurt */ 2579
1445 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));
1446 } 2630 }
1447 else 2631 else
1448# endif 2632#endif
1449 { 2633 {
1450 while (pipe (evpipe)) 2634#ifdef _WIN32
1451 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1452 2636 DWORD sent;
1453 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1454 fd_intern (evpipe [1]); 2638 buf.len = 1;
1455 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1456 } 2640#else
1457
1458 ev_io_start (EV_A_ &pipe_w);
1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1460 }
1461}
1462
1463inline_speed void
1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1465{
1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1483 old_errno = errno; /* save errno because write will clobber it */
1484
1485#if EV_USE_EVENTFD
1486 if (evfd >= 0)
1487 {
1488 uint64_t counter = 1;
1489 write (evfd, &counter, sizeof (uint64_t));
1490 }
1491 else
1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1499 write (evpipe [1], &(evpipe [1]), 1); 2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1500 } 2643 }
1501 2644
1502 errno = old_errno; 2645 errno = old_errno;
1503 } 2646 }
1504} 2647}
… …
1511 int i; 2654 int i;
1512 2655
1513 if (revents & EV_READ) 2656 if (revents & EV_READ)
1514 { 2657 {
1515#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1516 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1517 { 2660 {
1518 uint64_t counter; 2661 uint64_t counter;
1519 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1520 } 2663 }
1521 else 2664 else
1522#endif 2665#endif
1523 { 2666 {
1524 char dummy; 2667 char dummy[4];
1525 /* 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
1526 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
1527 } 2678 }
1528 } 2679 }
1529 2680
1530 pipe_write_skipped = 0; 2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1531 2684
1532#if EV_SIGNAL_ENABLE 2685#if EV_SIGNAL_ENABLE
1533 if (sig_pending) 2686 if (sig_pending)
1534 { 2687 {
1535 sig_pending = 0; 2688 sig_pending = 0;
1536 2689
2690 ECB_MEMORY_FENCE;
2691
1537 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1538 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1539 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1540 } 2695 }
1541#endif 2696#endif
1542 2697
1543#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1544 if (async_pending) 2699 if (async_pending)
1545 { 2700 {
1546 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1547 2704
1548 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1549 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1550 { 2707 {
1551 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1552 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1553 } 2711 }
1554 } 2712 }
1555#endif 2713#endif
1556} 2714}
1557 2715
1558/*****************************************************************************/ 2716/*****************************************************************************/
1559 2717
1560void 2718void
1561ev_feed_signal (int signum) 2719ev_feed_signal (int signum) EV_NOEXCEPT
1562{ 2720{
1563#if EV_MULTIPLICITY 2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
1564 EV_P = signals [signum - 1].loop; 2724 EV_A = signals [signum - 1].loop;
1565 2725
1566 if (!EV_A) 2726 if (!EV_A)
1567 return; 2727 return;
1568#endif 2728#endif
1569 2729
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1; 2730 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending); 2731 evpipe_write (EV_A_ &sig_pending);
1575} 2732}
1576 2733
1577static void 2734static void
… …
1582#endif 2739#endif
1583 2740
1584 ev_feed_signal (signum); 2741 ev_feed_signal (signum);
1585} 2742}
1586 2743
1587void noinline 2744ecb_noinline
2745void
1588ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1589{ 2747{
1590 WL w; 2748 WL w;
1591 2749
1592 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1593 return; 2751 return;
1594 2752
1595 --signum; 2753 --signum;
1596 2754
1597#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1598 /* 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 */
1599 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1600 2758
1601 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1602 return; 2760 return;
1603#endif 2761#endif
1604 2762
1605 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1606 2765
1607 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1609} 2768}
1610 2769
… …
1701# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1702#endif 2861#endif
1703#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1704# include "ev_epoll.c" 2863# include "ev_epoll.c"
1705#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
1706#if EV_USE_POLL 2871#if EV_USE_POLL
1707# include "ev_poll.c" 2872# include "ev_poll.c"
1708#endif 2873#endif
1709#if EV_USE_SELECT 2874#if EV_USE_SELECT
1710# include "ev_select.c" 2875# include "ev_select.c"
1711#endif 2876#endif
1712 2877
1713int ecb_cold 2878ecb_cold int
1714ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1715{ 2880{
1716 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1717} 2882}
1718 2883
1719int ecb_cold 2884ecb_cold int
1720ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1721{ 2886{
1722 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1723} 2888}
1724 2889
1725/* 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 */
1726int inline_size ecb_cold 2891inline_size ecb_cold int
1727enable_secure (void) 2892enable_secure (void)
1728{ 2893{
1729#ifdef _WIN32 2894#ifdef _WIN32
1730 return 0; 2895 return 0;
1731#else 2896#else
1732 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1733 || getgid () != getegid (); 2898 || getgid () != getegid ();
1734#endif 2899#endif
1735} 2900}
1736 2901
1737unsigned int ecb_cold 2902ecb_cold
2903unsigned int
1738ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1739{ 2905{
1740 unsigned int flags = 0; 2906 unsigned int flags = 0;
1741 2907
1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1743 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1744 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;
1745 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1746 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1747 2915
1748 return flags; 2916 return flags;
1749} 2917}
1750 2918
1751unsigned int ecb_cold 2919ecb_cold
2920unsigned int
1752ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1753{ 2922{
1754 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1755 2924
1756#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1757 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1765#endif 2934#endif
1766#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
1767 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) */
1768#endif 2937#endif
1769 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
1770 return flags; 2948 return flags;
1771} 2949}
1772 2950
1773unsigned int ecb_cold 2951ecb_cold
2952unsigned int
1774ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1775{ 2954{
1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1777 2956
1778 /* 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 */
1779 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 */
1780 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
1781 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
1782 return flags; 2968 return flags;
1783} 2969}
1784 2970
1785unsigned int 2971unsigned int
1786ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1787{ 2973{
1788 return backend; 2974 return backend;
1789} 2975}
1790 2976
1791#if EV_FEATURE_API 2977#if EV_FEATURE_API
1792unsigned int 2978unsigned int
1793ev_iteration (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1794{ 2980{
1795 return loop_count; 2981 return loop_count;
1796} 2982}
1797 2983
1798unsigned int 2984unsigned int
1799ev_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1800{ 2986{
1801 return loop_depth; 2987 return loop_depth;
1802} 2988}
1803 2989
1804void 2990void
1805ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1806{ 2992{
1807 io_blocktime = interval; 2993 io_blocktime = interval;
1808} 2994}
1809 2995
1810void 2996void
1811ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1812{ 2998{
1813 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1814} 3000}
1815 3001
1816void 3002void
1817ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1818{ 3004{
1819 userdata = data; 3005 userdata = data;
1820} 3006}
1821 3007
1822void * 3008void *
1823ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1824{ 3010{
1825 return userdata; 3011 return userdata;
1826} 3012}
1827 3013
1828void 3014void
1829ev_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
1830{ 3016{
1831 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1832} 3018}
1833 3019
1834void 3020void
1835ev_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
1836{ 3022{
1837 release_cb = release; 3023 release_cb = release;
1838 acquire_cb = acquire; 3024 acquire_cb = acquire;
1839} 3025}
1840#endif 3026#endif
1841 3027
1842/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1843static void noinline ecb_cold 3029ecb_noinline ecb_cold
3030static void
1844loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1845{ 3032{
1846 if (!backend) 3033 if (!backend)
1847 { 3034 {
1848 origflags = flags; 3035 origflags = flags;
1849 3036
… …
1894#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1895 async_pending = 0; 3082 async_pending = 0;
1896#endif 3083#endif
1897 pipe_write_skipped = 0; 3084 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0; 3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1899#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1901#endif 3090#endif
1902#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1905 3094
1906 if (!(flags & EVBACKEND_MASK)) 3095 if (!(flags & EVBACKEND_MASK))
1907 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1908 3097
1909#if EV_USE_IOCP 3098#if EV_USE_IOCP
1910 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1911#endif 3100#endif
1912#if EV_USE_PORT 3101#if EV_USE_PORT
1913 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1914#endif 3103#endif
1915#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1916 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);
1917#endif 3112#endif
1918#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1919 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1920#endif 3115#endif
1921#if EV_USE_POLL 3116#if EV_USE_POLL
1922 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1923#endif 3118#endif
1924#if EV_USE_SELECT 3119#if EV_USE_SELECT
1925 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1926#endif 3121#endif
1927 3122
1928 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1929 3124
1930#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1933#endif 3128#endif
1934 } 3129 }
1935} 3130}
1936 3131
1937/* free up a loop structure */ 3132/* free up a loop structure */
1938void ecb_cold 3133ecb_cold
3134void
1939ev_loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1940{ 3136{
1941 int i; 3137 int i;
1942 3138
1943#if EV_MULTIPLICITY 3139#if EV_MULTIPLICITY
… …
1946 return; 3142 return;
1947#endif 3143#endif
1948 3144
1949#if EV_CLEANUP_ENABLE 3145#if EV_CLEANUP_ENABLE
1950 /* queue cleanup watchers (and execute them) */ 3146 /* queue cleanup watchers (and execute them) */
1951 if (expect_false (cleanupcnt)) 3147 if (ecb_expect_false (cleanupcnt))
1952 { 3148 {
1953 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1954 EV_INVOKE_PENDING; 3150 EV_INVOKE_PENDING;
1955 } 3151 }
1956#endif 3152#endif
1957 3153
1958#if EV_CHILD_ENABLE 3154#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev)) 3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1960 { 3156 {
1961 ev_ref (EV_A); /* child watcher */ 3157 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev); 3158 ev_signal_stop (EV_A_ &childev);
1963 } 3159 }
1964#endif 3160#endif
… …
1966 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1967 { 3163 {
1968 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1969 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1970 3166
1971#if EV_USE_EVENTFD
1972 if (evfd >= 0)
1973 close (evfd);
1974#endif
1975
1976 if (evpipe [0] >= 0)
1977 {
1978 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1979 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1980 }
1981 } 3169 }
1982 3170
1983#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1984 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1985 close (sigfd); 3173 close (sigfd);
… …
1992 3180
1993 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1994 close (backend_fd); 3182 close (backend_fd);
1995 3183
1996#if EV_USE_IOCP 3184#if EV_USE_IOCP
1997 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1998#endif 3186#endif
1999#if EV_USE_PORT 3187#if EV_USE_PORT
2000 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2001#endif 3189#endif
2002#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
2003 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);
2004#endif 3198#endif
2005#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
2006 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2007#endif 3201#endif
2008#if EV_USE_POLL 3202#if EV_USE_POLL
2009 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2010#endif 3204#endif
2011#if EV_USE_SELECT 3205#if EV_USE_SELECT
2012 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2013#endif 3207#endif
2014 3208
2015 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
2016 { 3210 {
2017 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
2059 3253
2060inline_size void 3254inline_size void
2061loop_fork (EV_P) 3255loop_fork (EV_P)
2062{ 3256{
2063#if EV_USE_PORT 3257#if EV_USE_PORT
2064 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2065#endif 3259#endif
2066#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
2067 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);
2068#endif 3268#endif
2069#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
2070 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2071#endif 3271#endif
2072#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2073 infy_fork (EV_A); 3273 infy_fork (EV_A);
2074#endif 3274#endif
2075 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2076 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
2077 { 3278 {
2078 /* 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 */
2079 3280
2080 ev_ref (EV_A); 3281 ev_ref (EV_A);
2081 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
2082 3283
2083#if EV_USE_EVENTFD
2084 if (evfd >= 0)
2085 close (evfd);
2086#endif
2087
2088 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
2089 {
2090 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
2091 EV_WIN32_CLOSE_FD (evpipe [1]);
2092 }
2093 3286
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2095 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
2096 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
2097 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2098#endif
2099 } 3290 }
3291#endif
2100 3292
2101 postfork = 0; 3293 postfork = 0;
2102} 3294}
2103 3295
2104#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
2105 3297
3298ecb_cold
2106struct ev_loop * ecb_cold 3299struct ev_loop *
2107ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
2108{ 3301{
2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2110 3303
2111 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
2112 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
… …
2119} 3312}
2120 3313
2121#endif /* multiplicity */ 3314#endif /* multiplicity */
2122 3315
2123#if EV_VERIFY 3316#if EV_VERIFY
2124static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2125verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
2126{ 3320{
2127 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));
2128 3322
2129 if (w->pending) 3323 if (w->pending)
2130 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));
2131} 3325}
2132 3326
2133static void noinline ecb_cold 3327ecb_noinline ecb_cold
3328static void
2134verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
2135{ 3330{
2136 int i; 3331 int i;
2137 3332
2138 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2143 3338
2144 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2145 } 3340 }
2146} 3341}
2147 3342
2148static void noinline ecb_cold 3343ecb_noinline ecb_cold
3344static void
2149array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
2150{ 3346{
2151 while (cnt--) 3347 while (cnt--)
2152 { 3348 {
2153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2156} 3352}
2157#endif 3353#endif
2158 3354
2159#if EV_FEATURE_API 3355#if EV_FEATURE_API
2160void ecb_cold 3356void ecb_cold
2161ev_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
2162{ 3358{
2163#if EV_VERIFY 3359#if EV_VERIFY
2164 int i; 3360 int i;
2165 WL w; 3361 WL w, w2;
2166 3362
2167 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
2168 3364
2169 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
2170 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
2171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2172 3368
2173 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
2174 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
2175 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
2176 { 3375 {
2177 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
2178 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));
2179 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));
2180 } 3386 }
3387 }
2181 3388
2182 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
2183 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
2184 3391
2185#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
2231#endif 3438#endif
2232} 3439}
2233#endif 3440#endif
2234 3441
2235#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
2236struct ev_loop * ecb_cold 3444struct ev_loop *
2237#else 3445#else
2238int 3446int
2239#endif 3447#endif
2240ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
2241{ 3449{
2242 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
2243 { 3451 {
2244#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
2245 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2264 3472
2265 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2266} 3474}
2267 3475
2268void 3476void
2269ev_loop_fork (EV_P) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2270{ 3478{
2271 postfork = 1; /* must be in line with ev_default_fork */ 3479 postfork = 1;
2272} 3480}
2273 3481
2274/*****************************************************************************/ 3482/*****************************************************************************/
2275 3483
2276void 3484void
… …
2278{ 3486{
2279 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2280} 3488}
2281 3489
2282unsigned int 3490unsigned int
2283ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2284{ 3492{
2285 int pri; 3493 int pri;
2286 unsigned int count = 0; 3494 unsigned int count = 0;
2287 3495
2288 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2289 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2290 3498
2291 return count; 3499 return count;
2292} 3500}
2293 3501
2294void noinline 3502ecb_noinline
3503void
2295ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2296{ 3505{
2297 int pri; 3506 pendingpri = NUMPRI;
2298 3507
2299 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2300 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2301 { 3514 {
2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2303 3516
2304 p->w->pending = 0; 3517 p->w->pending = 0;
2305 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2306 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2307 } 3520 }
3521 }
3522 while (pendingpri);
2308} 3523}
2309 3524
2310#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2311/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2312/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2313inline_size void 3528inline_size void
2314idle_reify (EV_P) 3529idle_reify (EV_P)
2315{ 3530{
2316 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2317 { 3532 {
2318 int pri; 3533 int pri;
2319 3534
2320 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2321 { 3536 {
… …
2351 { 3566 {
2352 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2353 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2354 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2355 3570
2356 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.)));
2357 3572
2358 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2359 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2360 } 3575 }
2361 else 3576 else
… …
2370 } 3585 }
2371} 3586}
2372 3587
2373#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
2374 3589
2375static void noinline 3590ecb_noinline
3591static void
2376periodic_recalc (EV_P_ ev_periodic *w) 3592periodic_recalc (EV_P_ ev_periodic *w)
2377{ 3593{
2378 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2379 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);
2380 3596
… …
2382 while (at <= ev_rt_now) 3598 while (at <= ev_rt_now)
2383 { 3599 {
2384 ev_tstamp nat = at + w->interval; 3600 ev_tstamp nat = at + w->interval;
2385 3601
2386 /* when resolution fails us, we use ev_rt_now */ 3602 /* when resolution fails us, we use ev_rt_now */
2387 if (expect_false (nat == at)) 3603 if (ecb_expect_false (nat == at))
2388 { 3604 {
2389 at = ev_rt_now; 3605 at = ev_rt_now;
2390 break; 3606 break;
2391 } 3607 }
2392 3608
… …
2402{ 3618{
2403 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2404 3620
2405 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2406 { 3622 {
2407 int feed_count = 0;
2408
2409 do 3623 do
2410 { 3624 {
2411 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2412 3626
2413 /*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)));*/
… …
2440 } 3654 }
2441} 3655}
2442 3656
2443/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2444/* 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? */
2445static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2446periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2447{ 3662{
2448 int i; 3663 int i;
2449 3664
2450 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2463 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2464} 3679}
2465#endif 3680#endif
2466 3681
2467/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2468static void noinline ecb_cold 3683ecb_noinline ecb_cold
3684static void
2469timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2470{ 3686{
2471 int i; 3687 int i;
2472 3688
2473 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2482/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2483inline_speed void 3699inline_speed void
2484time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2485{ 3701{
2486#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2487 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2488 { 3704 {
2489 int i; 3705 int i;
2490 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2491 3707
2492 mn_now = get_clock (); 3708 mn_now = get_clock ();
2493 3709
2494 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2495 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2496 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)))
2497 { 3713 {
2498 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2499 return; 3715 return;
2500 } 3716 }
2501 3717
… …
2515 ev_tstamp diff; 3731 ev_tstamp diff;
2516 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2517 3733
2518 diff = odiff - rtmn_diff; 3734 diff = odiff - rtmn_diff;
2519 3735
2520 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)))
2521 return; /* all is well */ 3737 return; /* all is well */
2522 3738
2523 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2524 mn_now = get_clock (); 3740 mn_now = get_clock ();
2525 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2534 else 3750 else
2535#endif 3751#endif
2536 { 3752 {
2537 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2538 3754
2539 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)))
2540 { 3756 {
2541 /* 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 */
2542 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2543#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2544 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2547 3763
2548 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2549 } 3765 }
2550} 3766}
2551 3767
2552void 3768int
2553ev_run (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2554{ 3770{
2555#if EV_FEATURE_API 3771#if EV_FEATURE_API
2556 ++loop_depth; 3772 ++loop_depth;
2557#endif 3773#endif
… …
2567#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2568 ev_verify (EV_A); 3784 ev_verify (EV_A);
2569#endif 3785#endif
2570 3786
2571#ifndef _WIN32 3787#ifndef _WIN32
2572 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2573 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2574 { 3790 {
2575 curpid = getpid (); 3791 curpid = getpid ();
2576 postfork = 1; 3792 postfork = 1;
2577 } 3793 }
2578#endif 3794#endif
2579 3795
2580#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2581 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2582 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2583 if (forkcnt) 3799 if (forkcnt)
2584 { 3800 {
2585 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2586 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2587 } 3803 }
2588#endif 3804#endif
2589 3805
2590#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
2591 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2592 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2593 { 3809 {
2594 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2595 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2596 } 3812 }
2597#endif 3813#endif
2598 3814
2599 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2600 break; 3816 break;
2601 3817
2602 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2603 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2604 loop_fork (EV_A); 3820 loop_fork (EV_A);
2605 3821
2606 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2607 fd_reify (EV_A); 3823 fd_reify (EV_A);
2608 3824
… …
2613 3829
2614 /* remember old timestamp for io_blocktime calculation */ 3830 /* remember old timestamp for io_blocktime calculation */
2615 ev_tstamp prev_mn_now = mn_now; 3831 ev_tstamp prev_mn_now = mn_now;
2616 3832
2617 /* update time to cancel out callback processing overhead */ 3833 /* update time to cancel out callback processing overhead */
2618 time_update (EV_A_ 1e100); 3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2619 3835
2620 /* from now on, we want a pipe-wake-up */ 3836 /* from now on, we want a pipe-wake-up */
2621 pipe_write_wanted = 1; 3837 pipe_write_wanted = 1;
2622 3838
2623 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 */
2624 3840
2625 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2626 { 3842 {
2627 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2628 3844
2629 if (timercnt) 3845 if (timercnt)
2630 { 3846 {
2631 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2632 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
… …
2639 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2640 } 3856 }
2641#endif 3857#endif
2642 3858
2643 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2644 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2645 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2646 3862
2647 /* at this point, we NEED to wait, so we have to ensure */ 3863 /* now there are two more special cases left, either we have
2648 /* 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 wait for a minimum
3866 * amount of time for some event loop backends.
3867 */
2649 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.)
2650 waittime = backend_mintime; 3871 : backend_mintime;
2651 3872
2652 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2653 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2654 { 3875 {
2655 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2656 3877
2657 if (sleeptime > waittime - backend_mintime) 3878 if (sleeptime > waittime - backend_mintime)
2658 sleeptime = waittime - backend_mintime; 3879 sleeptime = waittime - backend_mintime;
2659 3880
2660 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2661 { 3882 {
2662 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2663 waittime -= sleeptime; 3884 waittime -= sleeptime;
2664 } 3885 }
2665 } 3886 }
… …
2670#endif 3891#endif
2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2672 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674 3895
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2676 3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
2677 if (pipe_write_skipped) 3899 if (pipe_write_skipped)
2678 { 3900 {
2679 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)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 } 3903 }
2682 3904
2683
2684 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2685 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2686 } 3907 }
2687 3908
2688 /* queue pending timers and reschedule them */ 3909 /* queue pending timers and reschedule them */
… …
2696 idle_reify (EV_A); 3917 idle_reify (EV_A);
2697#endif 3918#endif
2698 3919
2699#if EV_CHECK_ENABLE 3920#if EV_CHECK_ENABLE
2700 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2701 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2702 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2703#endif 3924#endif
2704 3925
2705 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
2706 } 3927 }
2707 while (expect_true ( 3928 while (ecb_expect_true (
2708 activecnt 3929 activecnt
2709 && !loop_done 3930 && !loop_done
2710 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2711 )); 3932 ));
2712 3933
… …
2714 loop_done = EVBREAK_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2715 3936
2716#if EV_FEATURE_API 3937#if EV_FEATURE_API
2717 --loop_depth; 3938 --loop_depth;
2718#endif 3939#endif
2719}
2720 3940
3941 return activecnt;
3942}
3943
2721void 3944void
2722ev_break (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2723{ 3946{
2724 loop_done = how; 3947 loop_done = how;
2725} 3948}
2726 3949
2727void 3950void
2728ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2729{ 3952{
2730 ++activecnt; 3953 ++activecnt;
2731} 3954}
2732 3955
2733void 3956void
2734ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2735{ 3958{
2736 --activecnt; 3959 --activecnt;
2737} 3960}
2738 3961
2739void 3962void
2740ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2741{ 3964{
2742 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2743} 3966}
2744 3967
2745void 3968void
2746ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2747{ 3970{
2748 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2749} 3972}
2750 3973
2751void 3974void
2752ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2753{ 3976{
2754 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2755 3978
2756 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2757 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2774inline_size void 3997inline_size void
2775wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2776{ 3999{
2777 while (*head) 4000 while (*head)
2778 { 4001 {
2779 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
2780 { 4003 {
2781 *head = elem->next; 4004 *head = elem->next;
2782 break; 4005 break;
2783 } 4006 }
2784 4007
… …
2796 w->pending = 0; 4019 w->pending = 0;
2797 } 4020 }
2798} 4021}
2799 4022
2800int 4023int
2801ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2802{ 4025{
2803 W w_ = (W)w; 4026 W w_ = (W)w;
2804 int pending = w_->pending; 4027 int pending = w_->pending;
2805 4028
2806 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2807 { 4030 {
2808 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2809 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2810 w_->pending = 0; 4033 w_->pending = 0;
2811 return p->events; 4034 return p->events;
… …
2838 w->active = 0; 4061 w->active = 0;
2839} 4062}
2840 4063
2841/*****************************************************************************/ 4064/*****************************************************************************/
2842 4065
2843void noinline 4066ecb_noinline
4067void
2844ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2845{ 4069{
2846 int fd = w->fd; 4070 int fd = w->fd;
2847 4071
2848 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2849 return; 4073 return;
2850 4074
2851 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2852 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))));
2853 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2854 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2855 4082
2856 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2858 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));
2859 4089
2860 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);
2861 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2862 4092
2863 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2864} 4094}
2865 4095
2866void noinline 4096ecb_noinline
4097void
2867ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2868{ 4099{
2869 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2870 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2871 return; 4102 return;
2872 4103
2873 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));
2874 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2875 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2876 4110
2877 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2878 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2879 4113
2880 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2881 4115
2882 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2883} 4117}
2884 4118
2885void noinline 4119ecb_noinline
4120void
2886ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2887{ 4122{
2888 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2889 return; 4124 return;
2890 4125
2891 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2892 4127
2893 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.));
2894 4129
2895 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2896 4131
2897 ++timercnt; 4132 ++timercnt;
2898 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2899 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2900 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2901 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2902 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2903 4138
2904 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2905 4140
2906 /*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));*/
2907} 4142}
2908 4143
2909void noinline 4144ecb_noinline
4145void
2910ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2911{ 4147{
2912 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2913 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2914 return; 4150 return;
2915 4151
2916 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2917 4153
2918 { 4154 {
… …
2920 4156
2921 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));
2922 4158
2923 --timercnt; 4159 --timercnt;
2924 4160
2925 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2926 { 4162 {
2927 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2928 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2929 } 4165 }
2930 } 4166 }
… …
2934 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2935 4171
2936 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
2937} 4173}
2938 4174
2939void noinline 4175ecb_noinline
4176void
2940ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2941{ 4178{
2942 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2943 4182
2944 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2945 { 4184 {
2946 if (w->repeat) 4185 if (w->repeat)
2947 { 4186 {
… …
2960 4199
2961 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2962} 4201}
2963 4202
2964ev_tstamp 4203ev_tstamp
2965ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2966{ 4205{
2967 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.));
2968} 4207}
2969 4208
2970#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2971void noinline 4210ecb_noinline
4211void
2972ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2973{ 4213{
2974 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2975 return; 4215 return;
2976 4216
2977 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2978 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2979 else if (w->interval) 4219 else if (w->interval)
… …
2986 4226
2987 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2988 4228
2989 ++periodiccnt; 4229 ++periodiccnt;
2990 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2991 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2992 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2993 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2994 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2995 4235
2996 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2997 4237
2998 /*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));*/
2999} 4239}
3000 4240
3001void noinline 4241ecb_noinline
4242void
3002ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3003{ 4244{
3004 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
3005 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
3006 return; 4247 return;
3007 4248
3008 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
3009 4250
3010 { 4251 {
… …
3012 4253
3013 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));
3014 4255
3015 --periodiccnt; 4256 --periodiccnt;
3016 4257
3017 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
3018 { 4259 {
3019 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
3020 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
3021 } 4262 }
3022 } 4263 }
… …
3024 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
3025 4266
3026 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3027} 4268}
3028 4269
3029void noinline 4270ecb_noinline
4271void
3030ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3031{ 4273{
3032 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
3033 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
3034 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
3035} 4277}
… …
3039# define SA_RESTART 0 4281# define SA_RESTART 0
3040#endif 4282#endif
3041 4283
3042#if EV_SIGNAL_ENABLE 4284#if EV_SIGNAL_ENABLE
3043 4285
3044void noinline 4286ecb_noinline
4287void
3045ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3046{ 4289{
3047 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
3048 return; 4291 return;
3049 4292
3050 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));
3051 4294
3052#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
3053 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",
3054 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3055 4298
3056 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
3057#endif 4301#endif
3058 4302
3059 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
3060 4304
3061#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
3120 } 4364 }
3121 4365
3122 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
3123} 4367}
3124 4368
3125void noinline 4369ecb_noinline
4370void
3126ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3127{ 4372{
3128 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3129 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3130 return; 4375 return;
3131 4376
3132 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3133 4378
3134 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3162#endif 4407#endif
3163 4408
3164#if EV_CHILD_ENABLE 4409#if EV_CHILD_ENABLE
3165 4410
3166void 4411void
3167ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3168{ 4413{
3169#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
3170 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));
3171#endif 4416#endif
3172 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
3173 return; 4418 return;
3174 4419
3175 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
3176 4421
3177 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
… …
3179 4424
3180 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
3181} 4426}
3182 4427
3183void 4428void
3184ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3185{ 4430{
3186 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
3187 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
3188 return; 4433 return;
3189 4434
3190 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3191 4436
3192 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3206 4451
3207#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
3208#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3209#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
3210 4455
3211static 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);
3212 4457
3213#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
3214 4459
3215/* 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 */
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3217 4462
3218static void noinline 4463ecb_noinline
4464static void
3219infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
3220{ 4466{
3221 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);
3222 4471
3223 if (w->wd >= 0) 4472 if (w->wd >= 0)
3224 { 4473 {
3225 struct statfs sfs; 4474 struct statfs sfs;
3226 4475
… …
3230 4479
3231 if (!fs_2625) 4480 if (!fs_2625)
3232 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3233 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
3234 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
3235 || 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 */
3236 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
3237 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
3238 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
3239 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
3240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3241 else 4496 else
3242 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 */
3243 } 4498 }
… …
3278 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3279 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
3280 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3281} 4536}
3282 4537
3283static void noinline 4538ecb_noinline
4539static void
3284infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
3285{ 4541{
3286 int slot; 4542 int slot;
3287 int wd = w->wd; 4543 int wd = w->wd;
3288 4544
… …
3295 4551
3296 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
3297 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
3298} 4554}
3299 4555
3300static void noinline 4556ecb_noinline
4557static void
3301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3302{ 4559{
3303 if (slot < 0) 4560 if (slot < 0)
3304 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
3305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3341 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3342 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3343 } 4600 }
3344} 4601}
3345 4602
3346inline_size void ecb_cold 4603inline_size ecb_cold
4604void
3347ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3348{ 4606{
3349 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3350 * 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
3351 */ 4609 */
… …
3356} 4614}
3357 4615
3358inline_size int 4616inline_size int
3359infy_newfd (void) 4617infy_newfd (void)
3360{ 4618{
3361#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3363 if (fd >= 0) 4621 if (fd >= 0)
3364 return fd; 4622 return fd;
3365#endif 4623#endif
3366 return inotify_init (); 4624 return inotify_init ();
… …
3441#else 4699#else
3442# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3443#endif 4701#endif
3444 4702
3445void 4703void
3446ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3447{ 4705{
3448 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3449 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3450 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3451 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3452} 4710}
3453 4711
3454static void noinline 4712ecb_noinline
4713static void
3455stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3456{ 4715{
3457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3458 4717
3459 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3490 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3491 } 4750 }
3492} 4751}
3493 4752
3494void 4753void
3495ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3496{ 4755{
3497 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3498 return; 4757 return;
3499 4758
3500 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3501 4760
3502 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3521 4780
3522 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3523} 4782}
3524 4783
3525void 4784void
3526ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3527{ 4786{
3528 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3530 return; 4789 return;
3531 4790
3532 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3533 4792
3534#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3547} 4806}
3548#endif 4807#endif
3549 4808
3550#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3551void 4810void
3552ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3553{ 4812{
3554 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3555 return; 4814 return;
3556 4815
3557 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3558 4817
3559 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3562 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3563 4822
3564 ++idleall; 4823 ++idleall;
3565 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3566 4825
3567 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);
3568 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3569 } 4828 }
3570 4829
3571 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3572} 4831}
3573 4832
3574void 4833void
3575ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3576{ 4835{
3577 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3579 return; 4838 return;
3580 4839
3581 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3582 4841
3583 { 4842 {
… …
3594} 4853}
3595#endif 4854#endif
3596 4855
3597#if EV_PREPARE_ENABLE 4856#if EV_PREPARE_ENABLE
3598void 4857void
3599ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3600{ 4859{
3601 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3602 return; 4861 return;
3603 4862
3604 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3605 4864
3606 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3607 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3608 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3609 4868
3610 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3611} 4870}
3612 4871
3613void 4872void
3614ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3615{ 4874{
3616 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3617 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3618 return; 4877 return;
3619 4878
3620 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3621 4880
3622 { 4881 {
… …
3632} 4891}
3633#endif 4892#endif
3634 4893
3635#if EV_CHECK_ENABLE 4894#if EV_CHECK_ENABLE
3636void 4895void
3637ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3638{ 4897{
3639 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3640 return; 4899 return;
3641 4900
3642 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3643 4902
3644 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3645 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3646 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3647 4906
3648 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3649} 4908}
3650 4909
3651void 4910void
3652ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3653{ 4912{
3654 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3655 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3656 return; 4915 return;
3657 4916
3658 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3659 4918
3660 { 4919 {
… …
3669 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3670} 4929}
3671#endif 4930#endif
3672 4931
3673#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3674void noinline 4933ecb_noinline
4934void
3675ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3676{ 4936{
3677 ev_run (w->other, EVRUN_NOWAIT); 4937 ev_run (w->other, EVRUN_NOWAIT);
3678} 4938}
3679 4939
3680static void 4940static void
… …
3728 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3729} 4989}
3730#endif 4990#endif
3731 4991
3732void 4992void
3733ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3734{ 4994{
3735 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3736 return; 4996 return;
3737 4997
3738 { 4998 {
3739 EV_P = w->other; 4999 EV_P = w->other;
3740 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 ()));
… …
3759 5019
3760 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3761} 5021}
3762 5022
3763void 5023void
3764ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3765{ 5025{
3766 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3767 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3768 return; 5028 return;
3769 5029
3770 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3771 5031
3772 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
3779} 5039}
3780#endif 5040#endif
3781 5041
3782#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3783void 5043void
3784ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3785{ 5045{
3786 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3787 return; 5047 return;
3788 5048
3789 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3790 5050
3791 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3792 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3793 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3794 5054
3795 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3796} 5056}
3797 5057
3798void 5058void
3799ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3800{ 5060{
3801 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3802 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3803 return; 5063 return;
3804 5064
3805 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3806 5066
3807 { 5067 {
… …
3817} 5077}
3818#endif 5078#endif
3819 5079
3820#if EV_CLEANUP_ENABLE 5080#if EV_CLEANUP_ENABLE
3821void 5081void
3822ev_cleanup_start (EV_P_ ev_cleanup *w) 5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3823{ 5083{
3824 if (expect_false (ev_is_active (w))) 5084 if (ecb_expect_false (ev_is_active (w)))
3825 return; 5085 return;
3826 5086
3827 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
3828 5088
3829 ev_start (EV_A_ (W)w, ++cleanupcnt); 5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
3830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3831 cleanups [cleanupcnt - 1] = w; 5091 cleanups [cleanupcnt - 1] = w;
3832 5092
3833 /* cleanup watchers should never keep a refcount on the loop */ 5093 /* cleanup watchers should never keep a refcount on the loop */
3834 ev_unref (EV_A); 5094 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
3836} 5096}
3837 5097
3838void 5098void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w) 5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3840{ 5100{
3841 clear_pending (EV_A_ (W)w); 5101 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w))) 5102 if (ecb_expect_false (!ev_is_active (w)))
3843 return; 5103 return;
3844 5104
3845 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3846 ev_ref (EV_A); 5106 ev_ref (EV_A);
3847 5107
… …
3858} 5118}
3859#endif 5119#endif
3860 5120
3861#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3862void 5122void
3863ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3864{ 5124{
3865 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3866 return; 5126 return;
3867 5127
3868 w->sent = 0; 5128 w->sent = 0;
3869 5129
3870 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3871 5131
3872 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3873 5133
3874 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3875 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3876 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3877 5137
3878 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3879} 5139}
3880 5140
3881void 5141void
3882ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3883{ 5143{
3884 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3886 return; 5146 return;
3887 5147
3888 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3889 5149
3890 { 5150 {
… …
3898 5158
3899 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3900} 5160}
3901 5161
3902void 5162void
3903ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3904{ 5164{
3905 w->sent = 1; 5165 w->sent = 1;
3906 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
3907} 5167}
3908#endif 5168#endif
… …
3945 5205
3946 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));
3947} 5207}
3948 5208
3949void 5209void
3950ev_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
3951{ 5211{
3952 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));
3953
3954 if (expect_false (!once))
3955 {
3956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3957 return;
3958 }
3959 5213
3960 once->cb = cb; 5214 once->cb = cb;
3961 once->arg = arg; 5215 once->arg = arg;
3962 5216
3963 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3976} 5230}
3977 5231
3978/*****************************************************************************/ 5232/*****************************************************************************/
3979 5233
3980#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
3981void ecb_cold 5235ecb_cold
5236void
3982ev_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
3983{ 5238{
3984 int i, j; 5239 int i, j;
3985 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3986 5241
3987 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
4030 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4031#endif 5286#endif
4032 5287
4033#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
4034 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
4035 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
4036 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
4037 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
4038#endif 5293#endif
4039 5294
4040#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
4093 5348
4094#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
4095 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
4096#endif 5351#endif
4097 5352
4098EV_CPP(})
4099

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