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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 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 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
112# endif 114# endif
113# else 115# else
114# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
116# endif 127# endif
117 128
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
160# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
161# endif 172# endif
162 173
163#endif 174#endif
164 175
165#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
166#include <stdlib.h> 186#include <stdlib.h>
167#include <string.h> 187#include <string.h>
168#include <fcntl.h> 188#include <fcntl.h>
169#include <stddef.h> 189#include <stddef.h>
170 190
… …
180 200
181#ifdef EV_H 201#ifdef EV_H
182# include EV_H 202# include EV_H
183#else 203#else
184# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
185#endif 216#endif
186 217
187#ifndef _WIN32 218#ifndef _WIN32
188# include <sys/time.h> 219# include <sys/time.h>
189# include <sys/wait.h> 220# include <sys/wait.h>
190# include <unistd.h> 221# include <unistd.h>
191#else 222#else
192# include <io.h> 223# include <io.h>
193# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
194# include <windows.h> 226# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
197# endif 229# endif
198# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
199#endif 231#endif
200 232
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
202 234
203/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 236#if defined EV_NSIG
205/* use what's provided */ 237/* use what's provided */
206#elif defined (NSIG) 238#elif defined NSIG
207# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 240#elif defined _NSIG
209# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 242#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 244#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 248#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 250#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 254#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 256#else
225# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
226/* to make it compile regardless, just remove the above line, */ 258#endif
227/* but consider reporting it, too! :) */ 259
228# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
229#endif 262#endif
230 263
231#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 267# else
235# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
236# endif 269# endif
237#endif 270#endif
238 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
239#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 284# else
243# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
244# endif 286# endif
245#endif 287#endif
… …
282 324
283#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
284# define EV_USE_PORT 0 326# define EV_USE_PORT 0
285#endif 327#endif
286 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
287#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
289# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
290# else 348# else
291# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
332 390
333#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 393#endif
336 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
338/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 414# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
345# else 420# else
346# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
348# endif 423# endif
349#endif 424#endif
350 425
351/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352 427
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
358
359#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
362#endif 431#endif
363 432
… …
370# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
372#endif 441#endif
373 442
374#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 446# include <sys/select.h>
377# endif 447# endif
378#endif 448#endif
379 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
380#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 476# include <sys/statfs.h>
383# include <sys/inotify.h> 477# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
388# endif 482# endif
389#endif
390
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif 483#endif
394 484
395#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
397# include <stdint.h> 487# include <stdint.h>
… …
403# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
404# else 494# else
405# define EFD_CLOEXEC 02000000 495# define EFD_CLOEXEC 02000000
406# endif 496# endif
407# endif 497# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 499#endif
416 500
417#if EV_USE_SIGNALFD 501#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 503# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 509# define SFD_CLOEXEC O_CLOEXEC
426# else 510# else
427# define SFD_CLOEXEC 02000000 511# define SFD_CLOEXEC 02000000
428# endif 512# endif
429# endif 513# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 515
435struct signalfd_siginfo 516struct signalfd_siginfo
436{ 517{
437 uint32_t ssi_signo; 518 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
439}; 520};
440# ifdef __cplusplus
441}
442# endif 521#endif
443#endif
444 522
445 523/*****************************************************************************/
446/**/
447 524
448#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 527#else
451# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
452#endif 529#endif
453 530
454/* 531/*
455 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 534 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 537
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
558
559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 614 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
470#else 630#else
471# define expect(expr,value) (expr) 631 #include <inttypes.h>
472# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
474# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
475# endif 637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
476#endif 648 #endif
649#endif
477 650
651/* many compilers define _GNUC_ to some versions but then only implement
652 * what their idiot authors think are the "more important" extensions,
653 * causing enormous grief in return for some better fake benchmark numbers.
654 * or so.
655 * we try to detect these and simply assume they are not gcc - if they have
656 * an issue with that they should have done it right in the first place.
657 */
658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
659 #define ECB_GCC_VERSION(major,minor) 0
660#else
661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
780 #endif
781#endif
782
783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
869 #define ecb_inline static inline
870#elif ECB_GCC_VERSION(2,5)
871 #define ecb_inline static __inline__
872#elif ECB_C99
873 #define ecb_inline static inline
874#else
875 #define ecb_inline static
876#endif
877
878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
920#else
921 #define ecb_prefetch(addr,rw,locality)
922#endif
923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
953#define ecb_unused ecb_attribute ((__unused__))
954#define ecb_const ecb_attribute ((__const__))
955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
968
969#if ECB_GCC_VERSION(4,3)
970 #define ecb_artificial ecb_attribute ((__artificial__))
971 #define ecb_hot ecb_attribute ((__hot__))
972 #define ecb_cold ecb_attribute ((__cold__))
973#else
974 #define ecb_artificial
975 #define ecb_hot
976 #define ecb_cold
977#endif
978
979/* put around conditional expressions if you are very sure that the */
980/* expression is mostly true or mostly false. note that these return */
981/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
987
988/* count trailing zero bits and count # of one bits */
989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
1595
480#define inline_size static inline 1596#define inline_size ecb_inline
481 1597
482#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
483# define inline_speed static inline 1599# define inline_speed ecb_inline
484#else 1600#else
485# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
486#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
487 1669
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489 1671
490#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
492#else 1674#else
493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif 1676#endif
495 1677
496#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
497#define EMPTY2(a,b) /* used to suppress some warnings */
498 1679
499typedef ev_watcher *W; 1680typedef ev_watcher *W;
500typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
501typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
502 1683
503#define ev_active(w) ((W)(w))->active 1684#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1685#define ev_at(w) ((WT)(w))->at
505 1686
506#if EV_USE_REALTIME 1687#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1688/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 1689/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1690static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1691#endif
511 1692
512#if EV_USE_MONOTONIC 1693#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1694static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1708# include "ev_win32.c"
528#endif 1709#endif
529 1710
530/*****************************************************************************/ 1711/*****************************************************************************/
531 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1717/* define a suitable floor function (only used by periodics atm) */
1718
1719#if EV_USE_FLOOR
1720# include <math.h>
1721# define ev_floor(v) floor (v)
1722#else
1723
1724#include <float.h>
1725
1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
1728static ev_tstamp
1729ev_floor (ev_tstamp v)
1730{
1731 /* the choice of shift factor is not terribly important */
1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1734#else
1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1736#endif
1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
1746 /* argument too large for an unsigned long? then reduce it */
1747 if (ecb_expect_false (v >= shift))
1748 {
1749 ev_tstamp f;
1750
1751 if (v == v - 1.)
1752 return v; /* very large numbers are assumed to be integer */
1753
1754 f = shift * ev_floor (v * (1. / shift));
1755 return f + ev_floor (v - f);
1756 }
1757
1758 /* fits into an unsigned long */
1759 return (unsigned long)v;
1760}
1761
1762#endif
1763
1764/*****************************************************************************/
1765
1766#ifdef __linux
1767# include <sys/utsname.h>
1768#endif
1769
1770ecb_noinline ecb_cold
1771static unsigned int
1772ev_linux_version (void)
1773{
1774#ifdef __linux
1775 unsigned int v = 0;
1776 struct utsname buf;
1777 int i;
1778 char *p = buf.release;
1779
1780 if (uname (&buf))
1781 return 0;
1782
1783 for (i = 3+1; --i; )
1784 {
1785 unsigned int c = 0;
1786
1787 for (;;)
1788 {
1789 if (*p >= '0' && *p <= '9')
1790 c = c * 10 + *p++ - '0';
1791 else
1792 {
1793 p += *p == '.';
1794 break;
1795 }
1796 }
1797
1798 v = (v << 8) | c;
1799 }
1800
1801 return v;
1802#else
1803 return 0;
1804#endif
1805}
1806
1807/*****************************************************************************/
1808
532#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
533static void noinline 1810ecb_noinline ecb_cold
1811static void
534ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
535{ 1813{
536 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
537} 1815}
538#endif 1816#endif
539 1817
540static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
541 1819
1820ecb_cold
542void 1821void
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
544{ 1823{
545 syserr_cb = cb; 1824 syserr_cb = cb;
546} 1825}
547 1826
548static void noinline 1827ecb_noinline ecb_cold
1828static void
549ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
550{ 1830{
551 if (!msg) 1831 if (!msg)
552 msg = "(libev) system error"; 1832 msg = "(libev) system error";
553 1833
554 if (syserr_cb) 1834 if (syserr_cb)
555 syserr_cb (msg); 1835 syserr_cb (msg);
556 else 1836 else
557 { 1837 {
558#if EV_AVOID_STDIO 1838#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1839 ev_printerr (msg);
562 ev_printerr (": "); 1840 ev_printerr (": ");
563 ev_printerr (err); 1841 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1842 ev_printerr ("\n");
565#else 1843#else
566 perror (msg); 1844 perror (msg);
567#endif 1845#endif
568 abort (); 1846 abort ();
569 } 1847 }
570} 1848}
571 1849
572static void * 1850static void *
573ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
574{ 1852{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
581 */ 1858 */
582 1859
583 if (size) 1860 if (size)
584 return realloc (ptr, size); 1861 return realloc (ptr, size);
585 1862
586 free (ptr); 1863 free (ptr);
587 return 0; 1864 return 0;
588#endif
589} 1865}
590 1866
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
592 1868
1869ecb_cold
593void 1870void
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
595{ 1872{
596 alloc = cb; 1873 alloc = cb;
597} 1874}
598 1875
599inline_speed void * 1876inline_speed void *
… …
602 ptr = alloc (ptr, size); 1879 ptr = alloc (ptr, size);
603 1880
604 if (!ptr && size) 1881 if (!ptr && size)
605 { 1882 {
606#if EV_AVOID_STDIO 1883#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1884 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1885#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1886 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1887#endif
611 abort (); 1888 abort ();
612 } 1889 }
613 1890
614 return ptr; 1891 return ptr;
… …
626typedef struct 1903typedef struct
627{ 1904{
628 WL head; 1905 WL head;
629 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
632 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
633#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1912#endif
636#if EV_SELECT_IS_WINSOCKET 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1914 SOCKET handle;
1915#endif
1916#if EV_USE_IOCP
1917 OVERLAPPED or, ow;
638#endif 1918#endif
639} ANFD; 1919} ANFD;
640 1920
641/* stores the pending event set for a given watcher */ 1921/* stores the pending event set for a given watcher */
642typedef struct 1922typedef struct
… …
684 #undef VAR 1964 #undef VAR
685 }; 1965 };
686 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
687 1967
688 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1970
691#else 1971#else
692 1972
693 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1975 #include "ev_vars.h"
696 #undef VAR 1976 #undef VAR
697 1977
698 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
699 1979
700#endif 1980#endif
701 1981
702#if EV_FEATURE_API 1982#if EV_FEATURE_API
703# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
704# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
705# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else 1986#else
707# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1990#endif
711 1991
712#define EVUNLOOP_RECURSE 0x80 1992#define EVBREAK_RECURSE 0x80
713 1993
714/*****************************************************************************/ 1994/*****************************************************************************/
715 1995
716#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1997ev_tstamp
718ev_time (void) 1998ev_time (void) EV_NOEXCEPT
719{ 1999{
720#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
722 { 2002 {
723 struct timespec ts; 2003 struct timespec ts;
724 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
725 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
726 } 2006 }
727#endif 2007#endif
728 2008
2009 {
729 struct timeval tv; 2010 struct timeval tv;
730 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
731 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
732} 2014}
733#endif 2015#endif
734 2016
735inline_size ev_tstamp 2017inline_size ev_tstamp
736get_clock (void) 2018get_clock (void)
737{ 2019{
738#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
739 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
740 { 2022 {
741 struct timespec ts; 2023 struct timespec ts;
742 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
743 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
744 } 2026 }
745#endif 2027#endif
746 2028
747 return ev_time (); 2029 return ev_time ();
748} 2030}
749 2031
750#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
751ev_tstamp 2033ev_tstamp
752ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
753{ 2035{
754 return ev_rt_now; 2036 return ev_rt_now;
755} 2037}
756#endif 2038#endif
757 2039
758void 2040void
759ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
760{ 2042{
761 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
762 { 2044 {
763#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
764 struct timespec ts; 2046 struct timespec ts;
765 2047
766 ts.tv_sec = (time_t)delay; 2048 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
770#elif defined(_WIN32) 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
771 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
772#else 2054#else
773 struct timeval tv; 2055 struct timeval tv;
774
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777 2056
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 2059 /* by older ones */
2060 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 2061 select (0, 0, 0, 0, &tv);
782#endif 2062#endif
783 } 2063 }
784} 2064}
785 2065
786/*****************************************************************************/ 2066/*****************************************************************************/
787 2067
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2068#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 2069
790/* find a suitable new size for the given array, */ 2070/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 2071/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 2072inline_size int
793array_nextsize (int elem, int cur, int cnt) 2073array_nextsize (int elem, int cur, int cnt)
794{ 2074{
795 int ncur = cur + 1; 2075 int ncur = cur + 1;
796 2076
797 do 2077 do
798 ncur <<= 1; 2078 ncur <<= 1;
799 while (cnt > ncur); 2079 while (cnt > ncur);
800 2080
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2081 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 2083 {
804 ncur *= elem; 2084 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2085 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
808 } 2088 }
809 2089
810 return ncur; 2090 return ncur;
811} 2091}
812 2092
813static noinline void * 2093ecb_noinline ecb_cold
2094static void *
814array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
815{ 2096{
816 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
818} 2099}
819 2100
2101#define array_needsize_noinit(base,offset,count)
2102
820#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
822 2105
823#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
825 { \ 2108 { \
826 int ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
830 } 2113 }
831 2114
832#if 0 2115#if 0
833#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
834 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
844 2127
845/*****************************************************************************/ 2128/*****************************************************************************/
846 2129
847/* dummy callback for pending events */ 2130/* dummy callback for pending events */
848static void noinline 2131ecb_noinline
2132static void
849pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 2134{
851} 2135}
852 2136
853void noinline 2137ecb_noinline
2138void
854ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
855{ 2140{
856 W w_ = (W)w; 2141 W w_ = (W)w;
857 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
858 2143
859 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
860 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
861 else 2146 else
862 { 2147 {
863 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
865 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
867 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
868} 2155}
869 2156
870inline_speed void 2157inline_speed void
871feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
872{ 2159{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
874 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
875} 2162}
876 2163
877inline_size void 2164inline_size void
878feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
913inline_speed void 2200inline_speed void
914fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
915{ 2202{
916 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
917 2204
918 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
920} 2207}
921 2208
922void 2209void
923ev_feed_fd_event (EV_P_ int fd, int revents) 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
924{ 2211{
925 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
927} 2214}
928 2215
… …
931inline_size void 2218inline_size void
932fd_reify (EV_P) 2219fd_reify (EV_P)
933{ 2220{
934 int i; 2221 int i;
935 2222
2223#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2224 for (i = 0; i < fdchangecnt; ++i)
2225 {
2226 int fd = fdchanges [i];
2227 ANFD *anfd = anfds + fd;
2228
2229 if (anfd->reify & EV__IOFDSET && anfd->head)
2230 {
2231 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2232
2233 if (handle != anfd->handle)
2234 {
2235 unsigned long arg;
2236
2237 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2238
2239 /* handle changed, but fd didn't - we need to do it in two steps */
2240 backend_modify (EV_A_ fd, anfd->events, 0);
2241 anfd->events = 0;
2242 anfd->handle = handle;
2243 }
2244 }
2245 }
2246#endif
2247
936 for (i = 0; i < fdchangecnt; ++i) 2248 for (i = 0; i < fdchangecnt; ++i)
937 { 2249 {
938 int fd = fdchanges [i]; 2250 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 2251 ANFD *anfd = anfds + fd;
940 ev_io *w; 2252 ev_io *w;
941 2253
942 unsigned char events = 0; 2254 unsigned char o_events = anfd->events;
2255 unsigned char o_reify = anfd->reify;
943 2256
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2257 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 2258
947#if EV_SELECT_IS_WINSOCKET 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 2260 {
950 unsigned long arg; 2261 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2262
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2264 anfd->events |= (unsigned char)w->events;
2265
2266 if (o_events != anfd->events)
2267 o_reify = EV__IOFDSET; /* actually |= */
953 } 2268 }
954#endif
955 2269
956 { 2270 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 2271 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 2272 }
967 2273
968 fdchangecnt = 0; 2274 fdchangecnt = 0;
969} 2275}
970 2276
971/* something about the given fd changed */ 2277/* something about the given fd changed */
972inline_size void 2278inline_size
2279void
973fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
974{ 2281{
975 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
976 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
977 2284
978 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
979 { 2286 {
980 ++fdchangecnt; 2287 ++fdchangecnt;
981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
982 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
983 } 2290 }
984} 2291}
985 2292
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 2294inline_speed ecb_cold void
988fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
989{ 2296{
990 ev_io *w; 2297 ev_io *w;
991 2298
992 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 2303 }
997} 2304}
998 2305
999/* check whether the given fd is actually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 2307inline_size ecb_cold int
1001fd_valid (int fd) 2308fd_valid (int fd)
1002{ 2309{
1003#ifdef _WIN32 2310#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 2312#else
1006 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
1007#endif 2314#endif
1008} 2315}
1009 2316
1010/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
1011static void noinline 2318ecb_noinline ecb_cold
2319static void
1012fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
1013{ 2321{
1014 int fd; 2322 int fd;
1015 2323
1016 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
1020} 2328}
1021 2329
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 2331ecb_noinline ecb_cold
2332static void
1024fd_enomem (EV_P) 2333fd_enomem (EV_P)
1025{ 2334{
1026 int fd; 2335 int fd;
1027 2336
1028 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
1032 break; 2341 break;
1033 } 2342 }
1034} 2343}
1035 2344
1036/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
1037static void noinline 2346ecb_noinline
2347static void
1038fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
1039{ 2349{
1040 int fd; 2350 int fd;
1041 2351
1042 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
1063} 2373}
1064 2374
1065/*****************************************************************************/ 2375/*****************************************************************************/
1066 2376
1067/* 2377/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 2378 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2379 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 2380 * the branching factor of the d-tree.
1071 */ 2381 */
1072 2382
1073/* 2383/*
… …
1095 ev_tstamp minat; 2405 ev_tstamp minat;
1096 ANHE *minpos; 2406 ANHE *minpos;
1097 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1098 2408
1099 /* find minimum child */ 2409 /* find minimum child */
1100 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1101 { 2411 {
1102 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1103 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1104 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1105 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1106 } 2416 }
1107 else if (pos < E) 2417 else if (pos < E)
1108 { 2418 {
1109 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1110 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2420 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1111 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2421 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1112 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1113 } 2423 }
1114 else 2424 else
1115 break; 2425 break;
1116 2426
1117 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1125 2435
1126 heap [k] = he; 2436 heap [k] = he;
1127 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1128} 2438}
1129 2439
1130#else /* 4HEAP */ 2440#else /* not 4HEAP */
1131 2441
1132#define HEAP0 1 2442#define HEAP0 1
1133#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1134#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1135 2445
… …
1223 2533
1224/*****************************************************************************/ 2534/*****************************************************************************/
1225 2535
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2537
1228static void noinline 2538ecb_noinline ecb_cold
2539static void
1229evpipe_init (EV_P) 2540evpipe_init (EV_P)
1230{ 2541{
1231 if (!ev_is_active (&pipe_w)) 2542 if (!ev_is_active (&pipe_w))
1232 { 2543 {
2544 int fds [2];
2545
1233# if EV_USE_EVENTFD 2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2549 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2550 fds [1] = eventfd (0, 0);
1237 2551
1238 if (evfd >= 0) 2552 if (fds [1] < 0)
2553# endif
1239 { 2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
1240 evpipe [0] = -1; 2561 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2562
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2579 ev_io_start (EV_A_ &pipe_w);
2580 ev_unref (EV_A); /* watcher should not keep loop alive */
2581 }
2582}
2583
2584inline_speed void
2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2586{
2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2588
2589 if (ecb_expect_true (*flag))
2590 return;
2591
2592 *flag = 1;
2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2594
2595 pipe_write_skipped = 1;
2596
2597 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2598
2599 if (pipe_write_wanted)
2600 {
2601 int old_errno;
2602
2603 pipe_write_skipped = 0;
2604 ECB_MEMORY_FENCE_RELEASE;
2605
2606 old_errno = errno; /* save errno because write will clobber it */
2607
2608#if EV_USE_EVENTFD
2609 if (evpipe [0] < 0)
2610 {
2611 uint64_t counter = 1;
2612 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2613 }
1244 else 2614 else
1245# endif 2615#endif
1246 { 2616 {
1247 while (pipe (evpipe)) 2617#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1249 2619 DWORD sent;
1250 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1251 fd_intern (evpipe [1]); 2621 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2623#else
2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1253 } 2626 }
1254
1255 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279 2627
1280 errno = old_errno; 2628 errno = old_errno;
1281 } 2629 }
1282} 2630}
1283 2631
… …
1286static void 2634static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2635pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2636{
1289 int i; 2637 int i;
1290 2638
2639 if (revents & EV_READ)
2640 {
1291#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1293 { 2643 {
1294 uint64_t counter; 2644 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2646 }
1297 else 2647 else
1298#endif 2648#endif
1299 { 2649 {
1300 char dummy; 2650 char dummy[4];
2651#ifdef _WIN32
2652 WSABUF buf;
2653 DWORD recvd;
2654 DWORD flags = 0;
2655 buf.buf = dummy;
2656 buf.len = sizeof (dummy);
2657 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2658#else
1301 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
2661 }
1302 } 2662 }
1303 2663
2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2667
2668#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2669 if (sig_pending)
1305 { 2670 {
1306 sig_pending = 0; 2671 sig_pending = 0;
1307 2672
2673 ECB_MEMORY_FENCE;
2674
1308 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2678 }
2679#endif
1312 2680
1313#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1314 if (async_pending) 2682 if (async_pending)
1315 { 2683 {
1316 async_pending = 0; 2684 async_pending = 0;
2685
2686 ECB_MEMORY_FENCE;
1317 2687
1318 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1320 { 2690 {
1321 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2694 }
1324 } 2695 }
1325#endif 2696#endif
1326} 2697}
1327 2698
1328/*****************************************************************************/ 2699/*****************************************************************************/
1329 2700
2701void
2702ev_feed_signal (int signum) EV_NOEXCEPT
2703{
2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
2707 EV_A = signals [signum - 1].loop;
2708
2709 if (!EV_A)
2710 return;
2711#endif
2712
2713 signals [signum - 1].pending = 1;
2714 evpipe_write (EV_A_ &sig_pending);
2715}
2716
1330static void 2717static void
1331ev_sighandler (int signum) 2718ev_sighandler (int signum)
1332{ 2719{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2720#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2721 signal (signum, ev_sighandler);
1339#endif 2722#endif
1340 2723
1341 signals [signum - 1].pending = 1; 2724 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2725}
1344 2726
1345void noinline 2727ecb_noinline
2728void
1346ev_feed_signal_event (EV_P_ int signum) 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1347{ 2730{
1348 WL w; 2731 WL w;
1349 2732
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2734 return;
1352 2735
1353 --signum; 2736 --signum;
1354 2737
1355#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1356 /* it is permissible to try to feed a signal to the wrong loop */ 2739 /* it is permissible to try to feed a signal to the wrong loop */
1357 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1358 2741
1359 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1360 return; 2743 return;
1361#endif 2744#endif
1362 2745
1363 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1364 2748
1365 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2751}
1368 2752
… …
1447 2831
1448#endif 2832#endif
1449 2833
1450/*****************************************************************************/ 2834/*****************************************************************************/
1451 2835
2836#if EV_USE_IOCP
2837# include "ev_iocp.c"
2838#endif
1452#if EV_USE_PORT 2839#if EV_USE_PORT
1453# include "ev_port.c" 2840# include "ev_port.c"
1454#endif 2841#endif
1455#if EV_USE_KQUEUE 2842#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1457#endif 2844#endif
1458#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
1459# include "ev_epoll.c" 2846# include "ev_epoll.c"
1460#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
1461#if EV_USE_POLL 2854#if EV_USE_POLL
1462# include "ev_poll.c" 2855# include "ev_poll.c"
1463#endif 2856#endif
1464#if EV_USE_SELECT 2857#if EV_USE_SELECT
1465# include "ev_select.c" 2858# include "ev_select.c"
1466#endif 2859#endif
1467 2860
1468int 2861ecb_cold int
1469ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
1470{ 2863{
1471 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
1472} 2865}
1473 2866
1474int 2867ecb_cold int
1475ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
1476{ 2869{
1477 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
1478} 2871}
1479 2872
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2874inline_size ecb_cold int
1482enable_secure (void) 2875enable_secure (void)
1483{ 2876{
1484#ifdef _WIN32 2877#ifdef _WIN32
1485 return 0; 2878 return 0;
1486#else 2879#else
1487 return getuid () != geteuid () 2880 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2881 || getgid () != getegid ();
1489#endif 2882#endif
1490} 2883}
1491 2884
2885ecb_cold
1492unsigned int 2886unsigned int
1493ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
1494{ 2888{
1495 unsigned int flags = 0; 2889 unsigned int flags = 0;
1496 2890
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1499 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1500 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1502 2898
1503 return flags; 2899 return flags;
1504} 2900}
1505 2901
2902ecb_cold
1506unsigned int 2903unsigned int
1507ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
1508{ 2905{
1509 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
1510 2907
1511#ifndef __NetBSD__ 2908#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
1520#endif 2917#endif
1521#ifdef __FreeBSD__ 2918#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1523#endif 2920#endif
1524 2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
2930
1525 return flags; 2931 return flags;
1526} 2932}
1527 2933
2934ecb_cold
1528unsigned int 2935unsigned int
1529ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
1530{ 2937{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2939
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
1536 2950
1537 return flags; 2951 return flags;
1538} 2952}
1539 2953
1540unsigned int 2954unsigned int
1541ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
1542{ 2956{
1543 return backend; 2957 return backend;
1544} 2958}
1545 2959
1546#if EV_FEATURE_API 2960#if EV_FEATURE_API
1547unsigned int 2961unsigned int
1548ev_iteration (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
1549{ 2963{
1550 return loop_count; 2964 return loop_count;
1551} 2965}
1552 2966
1553unsigned int 2967unsigned int
1554ev_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
1555{ 2969{
1556 return loop_depth; 2970 return loop_depth;
1557} 2971}
1558 2972
1559void 2973void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1561{ 2975{
1562 io_blocktime = interval; 2976 io_blocktime = interval;
1563} 2977}
1564 2978
1565void 2979void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1567{ 2981{
1568 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
1569} 2983}
1570 2984
1571void 2985void
1572ev_set_userdata (EV_P_ void *data) 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1573{ 2987{
1574 userdata = data; 2988 userdata = data;
1575} 2989}
1576 2990
1577void * 2991void *
1578ev_userdata (EV_P) 2992ev_userdata (EV_P) EV_NOEXCEPT
1579{ 2993{
1580 return userdata; 2994 return userdata;
1581} 2995}
1582 2996
2997void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1584{ 2999{
1585 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
1586} 3001}
1587 3002
3003void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1589{ 3005{
1590 release_cb = release; 3006 release_cb = release;
1591 acquire_cb = acquire; 3007 acquire_cb = acquire;
1592} 3008}
1593#endif 3009#endif
1594 3010
1595/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
1596static void noinline 3012ecb_noinline ecb_cold
3013static void
1597loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1598{ 3015{
1599 if (!backend) 3016 if (!backend)
1600 { 3017 {
3018 origflags = flags;
3019
1601#if EV_USE_REALTIME 3020#if EV_USE_REALTIME
1602 if (!have_realtime) 3021 if (!have_realtime)
1603 { 3022 {
1604 struct timespec ts; 3023 struct timespec ts;
1605 3024
… …
1627 if (!(flags & EVFLAG_NOENV) 3046 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 3047 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 3048 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 3049 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 3050
1632 ev_rt_now = ev_time (); 3051 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 3052 mn_now = get_clock ();
1634 now_floor = mn_now; 3053 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 3054 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 3055#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 3056 invoke_cb = ev_invoke_pending;
1638#endif 3057#endif
1639 3058
1640 io_blocktime = 0.; 3059 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 3060 timeout_blocktime = 0.;
1642 backend = 0; 3061 backend = 0;
1643 backend_fd = -1; 3062 backend_fd = -1;
1644 sig_pending = 0; 3063 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
1646 async_pending = 0; 3065 async_pending = 0;
1647#endif 3066#endif
3067 pipe_write_skipped = 0;
3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 3073#endif
1651#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 3076#endif
1654 3077
1655 if (!(flags & 0x0000ffffU)) 3078 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
1657 3080
3081#if EV_USE_IOCP
3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3083#endif
1658#if EV_USE_PORT 3084#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 3086#endif
1661#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1663#endif 3095#endif
1664#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
1665 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1666#endif 3098#endif
1667#if EV_USE_POLL 3099#if EV_USE_POLL
1668 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1669#endif 3101#endif
1670#if EV_USE_SELECT 3102#if EV_USE_SELECT
1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1672#endif 3104#endif
1673 3105
1674 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
1675 3107
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1679#endif 3111#endif
1680 } 3112 }
1681} 3113}
1682 3114
1683/* free up a loop structure */ 3115/* free up a loop structure */
1684static void noinline 3116ecb_cold
3117void
1685loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
1686{ 3119{
1687 int i; 3120 int i;
3121
3122#if EV_MULTIPLICITY
3123 /* mimic free (0) */
3124 if (!EV_A)
3125 return;
3126#endif
3127
3128#if EV_CLEANUP_ENABLE
3129 /* queue cleanup watchers (and execute them) */
3130 if (ecb_expect_false (cleanupcnt))
3131 {
3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3133 EV_INVOKE_PENDING;
3134 }
3135#endif
3136
3137#if EV_CHILD_ENABLE
3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3139 {
3140 ev_ref (EV_A); /* child watcher */
3141 ev_signal_stop (EV_A_ &childev);
3142 }
3143#endif
1688 3144
1689 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
1690 { 3146 {
1691 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 3149
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]); 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 3152 }
1705 3153
1706#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 3156 close (sigfd);
… …
1714#endif 3162#endif
1715 3163
1716 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
1717 close (backend_fd); 3165 close (backend_fd);
1718 3166
3167#if EV_USE_IOCP
3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3169#endif
1719#if EV_USE_PORT 3170#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 3172#endif
1722#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1724#endif 3181#endif
1725#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
1726 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1727#endif 3184#endif
1728#if EV_USE_POLL 3185#if EV_USE_POLL
1729 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1730#endif 3187#endif
1731#if EV_USE_SELECT 3188#if EV_USE_SELECT
1732 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1733#endif 3190#endif
1734 3191
1735 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
1736 { 3193 {
1737 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
1750 array_free (periodic, EMPTY); 3207 array_free (periodic, EMPTY);
1751#endif 3208#endif
1752#if EV_FORK_ENABLE 3209#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 3210 array_free (fork, EMPTY);
1754#endif 3211#endif
3212#if EV_CLEANUP_ENABLE
3213 array_free (cleanup, EMPTY);
3214#endif
1755 array_free (prepare, EMPTY); 3215 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 3216 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 3217#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 3218 array_free (async, EMPTY);
1759#endif 3219#endif
1760 3220
1761 backend = 0; 3221 backend = 0;
3222
3223#if EV_MULTIPLICITY
3224 if (ev_is_default_loop (EV_A))
3225#endif
3226 ev_default_loop_ptr = 0;
3227#if EV_MULTIPLICITY
3228 else
3229 ev_free (EV_A);
3230#endif
1762} 3231}
1763 3232
1764#if EV_USE_INOTIFY 3233#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 3234inline_size void infy_fork (EV_P);
1766#endif 3235#endif
1767 3236
1768inline_size void 3237inline_size void
1769loop_fork (EV_P) 3238loop_fork (EV_P)
1770{ 3239{
1771#if EV_USE_PORT 3240#if EV_USE_PORT
1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1773#endif 3242#endif
1774#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
1775 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1776#endif 3251#endif
1777#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
1778 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1779#endif 3254#endif
1780#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 3256 infy_fork (EV_A);
1782#endif 3257#endif
1783 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
1785 { 3261 {
1786 /* this "locks" the handlers against writing to the pipe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 3263
1793 ev_ref (EV_A); 3264 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
1795 3266
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806 3269
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
1810 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1811#endif
1812 } 3273 }
3274#endif
1813 3275
1814 postfork = 0; 3276 postfork = 0;
1815} 3277}
1816 3278
1817#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
1818 3280
3281ecb_cold
1819struct ev_loop * 3282struct ev_loop *
1820ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
1821{ 3284{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 3286
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
1826 3289
1827 if (ev_backend (EV_A)) 3290 if (ev_backend (EV_A))
1828 return EV_A; 3291 return EV_A;
1829 3292
3293 ev_free (EV_A);
1830 return 0; 3294 return 0;
1831} 3295}
1832 3296
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 3297#endif /* multiplicity */
1846 3298
1847#if EV_VERIFY 3299#if EV_VERIFY
1848static void noinline 3300ecb_noinline ecb_cold
3301static void
1849verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
1850{ 3303{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 3305
1853 if (w->pending) 3306 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 3308}
1856 3309
1857static void noinline 3310ecb_noinline ecb_cold
3311static void
1858verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
1859{ 3313{
1860 int i; 3314 int i;
1861 3315
1862 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 3321
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 3323 }
1870} 3324}
1871 3325
1872static void noinline 3326ecb_noinline ecb_cold
3327static void
1873array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
1874{ 3329{
1875 while (cnt--) 3330 while (cnt--)
1876 { 3331 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 3334 }
1880} 3335}
1881#endif 3336#endif
1882 3337
1883#if EV_FEATURE_API 3338#if EV_FEATURE_API
1884void 3339void ecb_cold
1885ev_verify (EV_P) 3340ev_verify (EV_P) EV_NOEXCEPT
1886{ 3341{
1887#if EV_VERIFY 3342#if EV_VERIFY
1888 int i; 3343 int i;
1889 WL w; 3344 WL w, w2;
1890 3345
1891 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
1892 3347
1893 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 3351
1897 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
1899 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 3358 {
1901 verify_watcher (EV_A_ (W)w); 3359 verify_watcher (EV_A_ (W)w);
3360
3361 if (j++ & 1)
3362 {
3363 assert (("libev: io watcher list contains a loop", w != w2));
3364 w2 = w2->next;
3365 }
3366
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3367 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3368 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 3369 }
3370 }
1905 3371
1906 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
1908 3374
1909#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 3390#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 3391 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 3392 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 3393#endif
1928 3394
3395#if EV_CLEANUP_ENABLE
3396 assert (cleanupmax >= cleanupcnt);
3397 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3398#endif
3399
1929#if EV_ASYNC_ENABLE 3400#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 3401 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 3402 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 3403#endif
1933 3404
… …
1950#endif 3421#endif
1951} 3422}
1952#endif 3423#endif
1953 3424
1954#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
1955struct ev_loop * 3427struct ev_loop *
1956ev_default_loop_init (unsigned int flags)
1957#else 3428#else
1958int 3429int
3430#endif
1959ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
1960#endif
1961{ 3432{
1962 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
1963 { 3434 {
1964#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 3455
1985 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
1986} 3457}
1987 3458
1988void 3459void
1989ev_default_destroy (void) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
1990{ 3461{
1991#if EV_MULTIPLICITY 3462 postfork = 1;
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */
2013} 3463}
2014 3464
2015/*****************************************************************************/ 3465/*****************************************************************************/
2016 3466
2017void 3467void
… …
2019{ 3469{
2020 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
2021} 3471}
2022 3472
2023unsigned int 3473unsigned int
2024ev_pending_count (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
2025{ 3475{
2026 int pri; 3476 int pri;
2027 unsigned int count = 0; 3477 unsigned int count = 0;
2028 3478
2029 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
2031 3481
2032 return count; 3482 return count;
2033} 3483}
2034 3484
2035void noinline 3485ecb_noinline
3486void
2036ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
2037{ 3488{
2038 int pri; 3489 pendingpri = NUMPRI;
2039 3490
2040 for (pri = NUMPRI; pri--; ) 3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
2041 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
2042 { 3497 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3499
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047
2048 p->w->pending = 0; 3500 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2051 } 3503 }
3504 }
3505 while (pendingpri);
2052} 3506}
2053 3507
2054#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
2057inline_size void 3511inline_size void
2058idle_reify (EV_P) 3512idle_reify (EV_P)
2059{ 3513{
2060 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
2061 { 3515 {
2062 int pri; 3516 int pri;
2063 3517
2064 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
2065 { 3519 {
… …
2095 { 3549 {
2096 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2097 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2098 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2099 3553
2100 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2101 3555
2102 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2103 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2104 } 3558 }
2105 else 3559 else
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3567 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3568 }
2115} 3569}
2116 3570
2117#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
3572
3573ecb_noinline
3574static void
3575periodic_recalc (EV_P_ ev_periodic *w)
3576{
3577 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3579
3580 /* the above almost always errs on the low side */
3581 while (at <= ev_rt_now)
3582 {
3583 ev_tstamp nat = at + w->interval;
3584
3585 /* when resolution fails us, we use ev_rt_now */
3586 if (ecb_expect_false (nat == at))
3587 {
3588 at = ev_rt_now;
3589 break;
3590 }
3591
3592 at = nat;
3593 }
3594
3595 ev_at (w) = at;
3596}
3597
2118/* make periodics pending */ 3598/* make periodics pending */
2119inline_size void 3599inline_size void
2120periodics_reify (EV_P) 3600periodics_reify (EV_P)
2121{ 3601{
2122 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2123 3603
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3605 {
2126 int feed_count = 0;
2127
2128 do 3606 do
2129 { 3607 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3609
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3610 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3619 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3620 downheap (periodics, periodiccnt, HEAP0);
2143 } 3621 }
2144 else if (w->interval) 3622 else if (w->interval)
2145 { 3623 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3624 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 3625 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3626 downheap (periodics, periodiccnt, HEAP0);
2162 } 3627 }
2163 else 3628 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3629 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3636 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3637 }
2173} 3638}
2174 3639
2175/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3642ecb_noinline ecb_cold
3643static void
2178periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2179{ 3645{
2180 int i; 3646 int i;
2181 3647
2182 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3651 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3652
2187 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3655 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3656 periodic_recalc (EV_A_ w);
2191 3657
2192 ANHE_at_cache (periodics [i]); 3658 ANHE_at_cache (periodics [i]);
2193 } 3659 }
2194 3660
2195 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2196} 3662}
2197#endif 3663#endif
2198 3664
2199/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2200static void noinline 3666ecb_noinline ecb_cold
3667static void
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3669{
2203 int i; 3670 int i;
2204 3671
2205 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2214/* also detect if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2215inline_speed void 3682inline_speed void
2216time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2217{ 3684{
2218#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2219 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2220 { 3687 {
2221 int i; 3688 int i;
2222 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2223 3690
2224 mn_now = get_clock (); 3691 mn_now = get_clock ();
2225 3692
2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2227 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2228 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2229 { 3696 {
2230 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2231 return; 3698 return;
2232 } 3699 }
2233 3700
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3709 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3710 * in the unlikely event of having been preempted here.
2244 */ 3711 */
2245 for (i = 4; --i; ) 3712 for (i = 4; --i; )
2246 { 3713 {
3714 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2248 3716
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3717 diff = odiff - rtmn_diff;
3718
3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2250 return; /* all is well */ 3720 return; /* all is well */
2251 3721
2252 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3723 mn_now = get_clock ();
2254 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2263 else 3733 else
2264#endif 3734#endif
2265 { 3735 {
2266 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2267 3737
2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2269 { 3739 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2272#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2273 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2276 3746
2277 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2278 } 3748 }
2279} 3749}
2280 3750
2281void 3751int
2282ev_loop (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2283{ 3753{
2284#if EV_FEATURE_API 3754#if EV_FEATURE_API
2285 ++loop_depth; 3755 ++loop_depth;
2286#endif 3756#endif
2287 3757
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3758 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3759
2290 loop_done = EVUNLOOP_CANCEL; 3760 loop_done = EVBREAK_CANCEL;
2291 3761
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3762 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3763
2294 do 3764 do
2295 { 3765 {
2296#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2297 ev_verify (EV_A); 3767 ev_verify (EV_A);
2298#endif 3768#endif
2299 3769
2300#ifndef _WIN32 3770#ifndef _WIN32
2301 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2302 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2303 { 3773 {
2304 curpid = getpid (); 3774 curpid = getpid ();
2305 postfork = 1; 3775 postfork = 1;
2306 } 3776 }
2307#endif 3777#endif
2308 3778
2309#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2310 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2311 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2312 if (forkcnt) 3782 if (forkcnt)
2313 { 3783 {
2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2315 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2316 } 3786 }
2317#endif 3787#endif
2318 3788
2319#if EV_PREPARE_ENABLE 3789#if EV_PREPARE_ENABLE
2320 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2321 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2322 { 3792 {
2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2324 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
2325 } 3795 }
2326#endif 3796#endif
2327 3797
2328 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
2329 break; 3799 break;
2330 3800
2331 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2332 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2333 loop_fork (EV_A); 3803 loop_fork (EV_A);
2334 3804
2335 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2336 fd_reify (EV_A); 3806 fd_reify (EV_A);
2337 3807
2338 /* calculate blocking time */ 3808 /* calculate blocking time */
2339 { 3809 {
2340 ev_tstamp waittime = 0.; 3810 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3811 ev_tstamp sleeptime = 0.;
2342 3812
3813 /* remember old timestamp for io_blocktime calculation */
3814 ev_tstamp prev_mn_now = mn_now;
3815
3816 /* update time to cancel out callback processing overhead */
3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3818
3819 /* from now on, we want a pipe-wake-up */
3820 pipe_write_wanted = 1;
3821
3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3823
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3825 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2352 3827
2353 if (timercnt) 3828 if (timercnt)
2354 { 3829 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
2357 } 3832 }
2358 3833
2359#if EV_PERIODIC_ENABLE 3834#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3835 if (periodiccnt)
2361 { 3836 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3837 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2364 } 3839 }
2365#endif 3840#endif
2366 3841
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2370 3845
3846 /* at this point, we NEED to wait, so we have to ensure */
3847 /* to pass a minimum nonzero value to the backend */
3848 if (ecb_expect_false (waittime < backend_mintime))
3849 waittime = backend_mintime;
3850
2371 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2373 { 3853 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3855
2376 if (sleeptime > waittime - backend_fudge) 3856 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3857 sleeptime = waittime - backend_mintime;
2378 3858
2379 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2380 { 3860 {
2381 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3862 waittime -= sleeptime;
2383 } 3863 }
2384 } 3864 }
2385 } 3865 }
2386 3866
2387#if EV_FEATURE_API 3867#if EV_FEATURE_API
2388 ++loop_count; 3868 ++loop_count;
2389#endif 3869#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3873
3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
3877 if (pipe_write_skipped)
3878 {
3879 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3881 }
2393 3882
2394 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2396 } 3885 }
2397 3886
… …
2406 idle_reify (EV_A); 3895 idle_reify (EV_A);
2407#endif 3896#endif
2408 3897
2409#if EV_CHECK_ENABLE 3898#if EV_CHECK_ENABLE
2410 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2411 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif 3902#endif
2414 3903
2415 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
2416 } 3905 }
2417 while (expect_true ( 3906 while (ecb_expect_true (
2418 activecnt 3907 activecnt
2419 && !loop_done 3908 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3910 ));
2422 3911
2423 if (loop_done == EVUNLOOP_ONE) 3912 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
2425 3914
2426#if EV_FEATURE_API 3915#if EV_FEATURE_API
2427 --loop_depth; 3916 --loop_depth;
2428#endif 3917#endif
2429}
2430 3918
3919 return activecnt;
3920}
3921
2431void 3922void
2432ev_unloop (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
2433{ 3924{
2434 loop_done = how; 3925 loop_done = how;
2435} 3926}
2436 3927
2437void 3928void
2438ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
2439{ 3930{
2440 ++activecnt; 3931 ++activecnt;
2441} 3932}
2442 3933
2443void 3934void
2444ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
2445{ 3936{
2446 --activecnt; 3937 --activecnt;
2447} 3938}
2448 3939
2449void 3940void
2450ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
2451{ 3942{
2452 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
2453} 3944}
2454 3945
2455void 3946void
2456ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
2457{ 3948{
2458 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
2459} 3950}
2460 3951
2461void 3952void
2462ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
2463{ 3954{
2464 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
2465 3956
2466 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2484inline_size void 3975inline_size void
2485wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
2486{ 3977{
2487 while (*head) 3978 while (*head)
2488 { 3979 {
2489 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
2490 { 3981 {
2491 *head = elem->next; 3982 *head = elem->next;
2492 break; 3983 break;
2493 } 3984 }
2494 3985
… …
2506 w->pending = 0; 3997 w->pending = 0;
2507 } 3998 }
2508} 3999}
2509 4000
2510int 4001int
2511ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2512{ 4003{
2513 W w_ = (W)w; 4004 W w_ = (W)w;
2514 int pending = w_->pending; 4005 int pending = w_->pending;
2515 4006
2516 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
2517 { 4008 {
2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
2520 w_->pending = 0; 4011 w_->pending = 0;
2521 return p->events; 4012 return p->events;
… …
2548 w->active = 0; 4039 w->active = 0;
2549} 4040}
2550 4041
2551/*****************************************************************************/ 4042/*****************************************************************************/
2552 4043
2553void noinline 4044ecb_noinline
4045void
2554ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2555{ 4047{
2556 int fd = w->fd; 4048 int fd = w->fd;
2557 4049
2558 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
2559 return; 4051 return;
2560 4052
2561 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2563 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
2564 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
2565 4060
2566 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2568 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
4064
4065 /* common bug, apparently */
4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2569 4067
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4068 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
2572 4070
2573 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2574} 4072}
2575 4073
2576void noinline 4074ecb_noinline
4075void
2577ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2578{ 4077{
2579 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
2581 return; 4080 return;
2582 4081
2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2584 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
2585 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2586 4088
2587 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
2589 4091
2590 fd_change (EV_A_ w->fd, 1); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 4093
2592 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2593} 4095}
2594 4096
2595void noinline 4097ecb_noinline
4098void
2596ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2597{ 4100{
2598 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4102 return;
2600 4103
2601 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
2602 4105
2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2604 4107
2605 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2606 4109
2607 ++timercnt; 4110 ++timercnt;
2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2609 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2610 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
2611 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
2612 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
2613 4116
2614 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2615 4118
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 4120}
2618 4121
2619void noinline 4122ecb_noinline
4123void
2620ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2621{ 4125{
2622 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
2624 return; 4128 return;
2625 4129
2626 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2627 4131
2628 { 4132 {
… …
2630 4134
2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2632 4136
2633 --timercnt; 4137 --timercnt;
2634 4138
2635 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
2636 { 4140 {
2637 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
2638 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
2639 } 4143 }
2640 } 4144 }
… …
2644 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
2645 4149
2646 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
2647} 4151}
2648 4152
2649void noinline 4153ecb_noinline
4154void
2650ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2651{ 4156{
2652 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
2653 4160
2654 if (ev_is_active (w)) 4161 if (ev_is_active (w))
2655 { 4162 {
2656 if (w->repeat) 4163 if (w->repeat)
2657 { 4164 {
… …
2670 4177
2671 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
2672} 4179}
2673 4180
2674ev_tstamp 4181ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2676{ 4183{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2678} 4185}
2679 4186
2680#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
2681void noinline 4188ecb_noinline
4189void
2682ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2683{ 4191{
2684 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
2685 return; 4193 return;
2686 4194
2687 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 4197 else if (w->interval)
2690 { 4198 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4199 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 4200 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 4201 }
2695 else 4202 else
2696 ev_at (w) = w->offset; 4203 ev_at (w) = w->offset;
2697 4204
2698 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2699 4206
2700 ++periodiccnt; 4207 ++periodiccnt;
2701 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2702 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2703 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2704 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
2705 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
2706 4213
2707 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2708 4215
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 4217}
2711 4218
2712void noinline 4219ecb_noinline
4220void
2713ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2714{ 4222{
2715 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2717 return; 4225 return;
2718 4226
2719 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2720 4228
2721 { 4229 {
… …
2723 4231
2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2725 4233
2726 --periodiccnt; 4234 --periodiccnt;
2727 4235
2728 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
2729 { 4237 {
2730 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
2731 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
2732 } 4240 }
2733 } 4241 }
… …
2735 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
2736 4244
2737 EV_FREQUENT_CHECK; 4245 EV_FREQUENT_CHECK;
2738} 4246}
2739 4247
2740void noinline 4248ecb_noinline
4249void
2741ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2742{ 4251{
2743 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
2746} 4255}
… …
2750# define SA_RESTART 0 4259# define SA_RESTART 0
2751#endif 4260#endif
2752 4261
2753#if EV_SIGNAL_ENABLE 4262#if EV_SIGNAL_ENABLE
2754 4263
2755void noinline 4264ecb_noinline
4265void
2756ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2757{ 4267{
2758 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
2759 return; 4269 return;
2760 4270
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2762 4272
2763#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 4274 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 4276
2767 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
2768#endif 4279#endif
2769 4280
2770 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2771 4282
2772#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 4330 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 4331 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4332 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 4333 sigaction (w->signum, &sa, 0);
2823 4334
4335 if (origflags & EVFLAG_NOSIGMASK)
4336 {
2824 sigemptyset (&sa.sa_mask); 4337 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 4338 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4339 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4340 }
2827#endif 4341#endif
2828 } 4342 }
2829 4343
2830 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
2831} 4345}
2832 4346
2833void noinline 4347ecb_noinline
4348void
2834ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2835{ 4350{
2836 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
2838 return; 4353 return;
2839 4354
2840 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
2841 4356
2842 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2870#endif 4385#endif
2871 4386
2872#if EV_CHILD_ENABLE 4387#if EV_CHILD_ENABLE
2873 4388
2874void 4389void
2875ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2876{ 4391{
2877#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 4394#endif
2880 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
2881 return; 4396 return;
2882 4397
2883 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2884 4399
2885 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
… …
2887 4402
2888 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2889} 4404}
2890 4405
2891void 4406void
2892ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2893{ 4408{
2894 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
2896 return; 4411 return;
2897 4412
2898 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2899 4414
2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2914 4429
2915#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2917#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
2918 4433
2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2920 4435
2921#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
2922 4437
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 4440
2926static void noinline 4441ecb_noinline
4442static void
2927infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
2928{ 4444{
2929 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); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 4449
2931 if (w->wd >= 0) 4450 if (w->wd >= 0)
2932 { 4451 {
2933 struct statfs sfs; 4452 struct statfs sfs;
2934 4453
… …
2938 4457
2939 if (!fs_2625) 4458 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 4460 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 4470 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 4471 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 4472 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 4474 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 4476 }
… …
2972 if (!pend || pend == path) 4497 if (!pend || pend == path)
2973 break; 4498 break;
2974 4499
2975 *pend = 0; 4500 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4501 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4502 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4503 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4504 }
2980 } 4505 }
2981 4506
2982 if (w->wd >= 0) 4507 if (w->wd >= 0)
… …
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2989} 4514}
2990 4515
2991static void noinline 4516ecb_noinline
4517static void
2992infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
2993{ 4519{
2994 int slot; 4520 int slot;
2995 int wd = w->wd; 4521 int wd = w->wd;
2996 4522
… …
3003 4529
3004 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
3005 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
3006} 4532}
3007 4533
3008static void noinline 4534ecb_noinline
4535static void
3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3010{ 4537{
3011 if (slot < 0) 4538 if (slot < 0)
3012 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4577 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4578 }
3052} 4579}
3053 4580
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 4581inline_size ecb_cold
4582void
3087ev_check_2625 (EV_P) 4583ev_check_2625 (EV_P)
3088{ 4584{
3089 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4587 */
… …
3096} 4592}
3097 4593
3098inline_size int 4594inline_size int
3099infy_newfd (void) 4595infy_newfd (void)
3100{ 4596{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4599 if (fd >= 0)
3104 return fd; 4600 return fd;
3105#endif 4601#endif
3106 return inotify_init (); 4602 return inotify_init ();
… …
3181#else 4677#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4679#endif
3184 4680
3185void 4681void
3186ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3187{ 4683{
3188 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3192} 4688}
3193 4689
3194static void noinline 4690ecb_noinline
4691static void
3195stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3196{ 4693{
3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3198 4695
3199 ev_statdata prev = w->attr; 4696 ev_statdata prev = w->attr;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4728 }
3232} 4729}
3233 4730
3234void 4731void
3235ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3236{ 4733{
3237 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3238 return; 4735 return;
3239 4736
3240 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3241 4738
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3261 4758
3262 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3263} 4760}
3264 4761
3265void 4762void
3266ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3267{ 4764{
3268 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
3270 return; 4767 return;
3271 4768
3272 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
3273 4770
3274#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
… …
3287} 4784}
3288#endif 4785#endif
3289 4786
3290#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
3291void 4788void
3292ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3293{ 4790{
3294 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
3295 return; 4792 return;
3296 4793
3297 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
3298 4795
3299 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
3302 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
3303 4800
3304 ++idleall; 4801 ++idleall;
3305 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
3306 4803
3307 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3308 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
3309 } 4806 }
3310 4807
3311 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
3312} 4809}
3313 4810
3314void 4811void
3315ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3316{ 4813{
3317 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
3319 return; 4816 return;
3320 4817
3321 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
3322 4819
3323 { 4820 {
… …
3334} 4831}
3335#endif 4832#endif
3336 4833
3337#if EV_PREPARE_ENABLE 4834#if EV_PREPARE_ENABLE
3338void 4835void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3340{ 4837{
3341 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
3342 return; 4839 return;
3343 4840
3344 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
3345 4842
3346 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
3347 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3348 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
3349 4846
3350 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3351} 4848}
3352 4849
3353void 4850void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4852{
3356 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
3358 return; 4855 return;
3359 4856
3360 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
3361 4858
3362 { 4859 {
… …
3372} 4869}
3373#endif 4870#endif
3374 4871
3375#if EV_CHECK_ENABLE 4872#if EV_CHECK_ENABLE
3376void 4873void
3377ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3378{ 4875{
3379 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
3380 return; 4877 return;
3381 4878
3382 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3383 4880
3384 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
3385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3386 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
3387 4884
3388 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3389} 4886}
3390 4887
3391void 4888void
3392ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 4890{
3394 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
3396 return; 4893 return;
3397 4894
3398 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3399 4896
3400 { 4897 {
… …
3409 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3410} 4907}
3411#endif 4908#endif
3412 4909
3413#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3414void noinline 4911ecb_noinline
4912void
3415ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3416{ 4914{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4915 ev_run (w->other, EVRUN_NOWAIT);
3418} 4916}
3419 4917
3420static void 4918static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4919embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4920{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4921 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4922
3425 if (ev_cb (w)) 4923 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4924 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4925 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4926 ev_run (w->other, EVRUN_NOWAIT);
3429} 4927}
3430 4928
3431static void 4929static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4930embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4931{
… …
3437 EV_P = w->other; 4935 EV_P = w->other;
3438 4936
3439 while (fdchangecnt) 4937 while (fdchangecnt)
3440 { 4938 {
3441 fd_reify (EV_A); 4939 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4940 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4941 }
3444 } 4942 }
3445} 4943}
3446 4944
3447static void 4945static void
… …
3453 4951
3454 { 4952 {
3455 EV_P = w->other; 4953 EV_P = w->other;
3456 4954
3457 ev_loop_fork (EV_A); 4955 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4956 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4957 }
3460 4958
3461 ev_embed_start (EV_A_ w); 4959 ev_embed_start (EV_A_ w);
3462} 4960}
3463 4961
… …
3468 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
3469} 4967}
3470#endif 4968#endif
3471 4969
3472void 4970void
3473ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3474{ 4972{
3475 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
3476 return; 4974 return;
3477 4975
3478 { 4976 {
3479 EV_P = w->other; 4977 EV_P = w->other;
3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3499 4997
3500 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
3501} 4999}
3502 5000
3503void 5001void
3504ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3505{ 5003{
3506 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
3508 return; 5006 return;
3509 5007
3510 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3511 5009
3512 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
… …
3519} 5017}
3520#endif 5018#endif
3521 5019
3522#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
3523void 5021void
3524ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3525{ 5023{
3526 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
3527 return; 5025 return;
3528 5026
3529 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
3530 5028
3531 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
3532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3533 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
3534 5032
3535 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3536} 5034}
3537 5035
3538void 5036void
3539ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 5038{
3541 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
3543 return; 5041 return;
3544 5042
3545 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
3546 5044
3547 { 5045 {
… …
3555 5053
3556 EV_FREQUENT_CHECK; 5054 EV_FREQUENT_CHECK;
3557} 5055}
3558#endif 5056#endif
3559 5057
5058#if EV_CLEANUP_ENABLE
5059void
5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5061{
5062 if (ecb_expect_false (ev_is_active (w)))
5063 return;
5064
5065 EV_FREQUENT_CHECK;
5066
5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5069 cleanups [cleanupcnt - 1] = w;
5070
5071 /* cleanup watchers should never keep a refcount on the loop */
5072 ev_unref (EV_A);
5073 EV_FREQUENT_CHECK;
5074}
5075
5076void
5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 clear_pending (EV_A_ (W)w);
5080 if (ecb_expect_false (!ev_is_active (w)))
5081 return;
5082
5083 EV_FREQUENT_CHECK;
5084 ev_ref (EV_A);
5085
5086 {
5087 int active = ev_active (w);
5088
5089 cleanups [active - 1] = cleanups [--cleanupcnt];
5090 ev_active (cleanups [active - 1]) = active;
5091 }
5092
5093 ev_stop (EV_A_ (W)w);
5094
5095 EV_FREQUENT_CHECK;
5096}
5097#endif
5098
3560#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
3561void 5100void
3562ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3563{ 5102{
3564 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
3565 return; 5104 return;
3566 5105
5106 w->sent = 0;
5107
3567 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
3568 5109
3569 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
3570 5111
3571 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
3572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3573 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
3574 5115
3575 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
3576} 5117}
3577 5118
3578void 5119void
3579ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3580{ 5121{
3581 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
3583 return; 5124 return;
3584 5125
3585 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
3586 5127
3587 { 5128 {
… …
3595 5136
3596 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
3597} 5138}
3598 5139
3599void 5140void
3600ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3601{ 5142{
3602 w->sent = 1; 5143 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
3604} 5145}
3605#endif 5146#endif
… …
3642 5183
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 5185}
3645 5186
3646void 5187void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3648{ 5189{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650
3651 if (expect_false (!once))
3652 {
3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3654 return;
3655 }
3656 5191
3657 once->cb = cb; 5192 once->cb = cb;
3658 once->arg = arg; 5193 once->arg = arg;
3659 5194
3660 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
3673} 5208}
3674 5209
3675/*****************************************************************************/ 5210/*****************************************************************************/
3676 5211
3677#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
5213ecb_cold
3678void 5214void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3680{ 5216{
3681 int i, j; 5217 int i, j;
3682 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
3683 5219
3684 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5263 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 5264#endif
3729 5265
3730#if EV_IDLE_ENABLE 5266#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 5267 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 5268 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 5269 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 5270 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 5271#endif
3736 5272
3737#if EV_FORK_ENABLE 5273#if EV_FORK_ENABLE
… …
3790 5326
3791#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
3793#endif 5329#endif
3794 5330
3795#ifdef __cplusplus
3796}
3797#endif
3798

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