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Comparing libev/ev.c (file contents):
Revision 1.368 by root, Mon Jan 17 12:11:11 2011 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
107# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# endif 114# endif
109# else 115# else
110# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
111# 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
112# endif 127# endif
113 128
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
115# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
156# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
157# endif 172# endif
158 173
159#endif 174#endif
160 175
161#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
162#include <stdlib.h> 186#include <stdlib.h>
163#include <string.h> 187#include <string.h>
164#include <fcntl.h> 188#include <fcntl.h>
165#include <stddef.h> 189#include <stddef.h>
166 190
… …
178# include EV_H 202# include EV_H
179#else 203#else
180# include "ev.h" 204# include "ev.h"
181#endif 205#endif
182 206
183EV_CPP(extern "C" {) 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
216#endif
184 217
185#ifndef _WIN32 218#ifndef _WIN32
186# include <sys/time.h> 219# include <sys/time.h>
187# include <sys/wait.h> 220# include <sys/wait.h>
188# include <unistd.h> 221# include <unistd.h>
189#else 222#else
190# include <io.h> 223# include <io.h>
191# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
192# include <windows.h> 226# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
195# endif 229# endif
196# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
197#endif 231#endif
198 232
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* 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 */
208 234
209/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 236#if defined EV_NSIG
211/* use what's provided */ 237/* use what's provided */
212#elif defined (NSIG) 238#elif defined NSIG
213# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 240#elif defined _NSIG
215# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 242#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 244#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 248#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 250#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 254#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 256#else
231# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 258#endif
233/* but consider reporting it, too! :) */ 259
234# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
235#endif 262#endif
236 263
237#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 267# else
241# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
242# endif 269# endif
243#endif 270#endif
244 271
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
245#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 284# else
249# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
250# endif 286# endif
251#endif 287#endif
… …
288 324
289#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 326# define EV_USE_PORT 0
291#endif 327#endif
292 328
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
293#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 348# else
297# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
338 390
339#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 393#endif
342 394
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
343/* 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, */
344/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 414# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
351# else 420# else
352# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
354# endif 423# endif
355#endif 424#endif
356 425
357/* 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 */
358 427
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
368#endif 431#endif
369 432
… …
376# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
378#endif 441#endif
379 442
380#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
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
383# endif 472# endif
384#endif 473#endif
385 474
386#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
387# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
389/* 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 */
390# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
393# endif 482# endif
394#endif
395
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif 483#endif
399 484
400#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
401/* 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 */
402# include <stdint.h> 487# include <stdint.h>
… …
433 uint32_t ssi_signo; 518 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
435}; 520};
436#endif 521#endif
437 522
438/**/ 523/*****************************************************************************/
439 524
440#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else 527#else
443# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
444#endif 529#endif
445 530
446/* 531/*
447 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 534 */
454#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 */
455 537
456#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) */
457#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) */
458 540
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
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } 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
461 558
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;
462#if __GNUC__ >= 4 614 #if __GNUC__
463# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
464# 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
465#else 630#else
466# define expect(expr,value) (expr) 631 #include <inttypes.h>
467# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
469# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
470# 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
471#endif 648 #endif
649#endif
472 650
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. */
473#define expect_false(expr) expect ((expr) != 0, 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#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
475#define inline_size static inline 1596#define inline_size ecb_inline
476 1597
477#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
478# define inline_speed static inline 1599# define inline_speed ecb_inline
479#else 1600#else
480# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
481#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/*****************************************************************************/
482 1669
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484 1671
485#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
487#else 1674#else
488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif 1676#endif
490 1677
491#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
492#define EMPTY2(a,b) /* used to suppress some warnings */
493 1679
494typedef ev_watcher *W; 1680typedef ev_watcher *W;
495typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
496typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
497 1683
… …
522# include "ev_win32.c" 1708# include "ev_win32.c"
523#endif 1709#endif
524 1710
525/*****************************************************************************/ 1711/*****************************************************************************/
526 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
527#ifdef __linux 1766#ifdef __linux
528# include <sys/utsname.h> 1767# include <sys/utsname.h>
529#endif 1768#endif
530 1769
1770ecb_noinline ecb_cold
531static unsigned int noinline 1771static unsigned int
532ev_linux_version (void) 1772ev_linux_version (void)
533{ 1773{
534#ifdef __linux 1774#ifdef __linux
535 unsigned int v = 0; 1775 unsigned int v = 0;
536 struct utsname buf; 1776 struct utsname buf;
… …
565} 1805}
566 1806
567/*****************************************************************************/ 1807/*****************************************************************************/
568 1808
569#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
570static void noinline 1810ecb_noinline ecb_cold
1811static void
571ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
572{ 1813{
573 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
574} 1815}
575#endif 1816#endif
576 1817
577static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
578 1819
1820ecb_cold
579void 1821void
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
581{ 1823{
582 syserr_cb = cb; 1824 syserr_cb = cb;
583} 1825}
584 1826
585static void noinline 1827ecb_noinline ecb_cold
1828static void
586ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
587{ 1830{
588 if (!msg) 1831 if (!msg)
589 msg = "(libev) system error"; 1832 msg = "(libev) system error";
590 1833
… …
603 abort (); 1846 abort ();
604 } 1847 }
605} 1848}
606 1849
607static void * 1850static void *
608ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
609{ 1852{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
613 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
614 * 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
615 * 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.
616 */ 1858 */
617 1859
618 if (size) 1860 if (size)
619 return realloc (ptr, size); 1861 return realloc (ptr, size);
620 1862
621 free (ptr); 1863 free (ptr);
622 return 0; 1864 return 0;
623#endif
624} 1865}
625 1866
626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
627 1868
1869ecb_cold
628void 1870void
629ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
630{ 1872{
631 alloc = cb; 1873 alloc = cb;
632} 1874}
633 1875
634inline_speed void * 1876inline_speed void *
… …
661typedef struct 1903typedef struct
662{ 1904{
663 WL head; 1905 WL head;
664 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
665 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) */
666 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 */
667 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
668#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif 1912#endif
671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
672 SOCKET handle; 1914 SOCKET handle;
… …
722 #undef VAR 1964 #undef VAR
723 }; 1965 };
724 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
725 1967
726 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
727 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 */
728 1970
729#else 1971#else
730 1972
731 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 */
732 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
733 #include "ev_vars.h" 1975 #include "ev_vars.h"
734 #undef VAR 1976 #undef VAR
735 1977
736 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
737 1979
738#endif 1980#endif
739 1981
740#if EV_FEATURE_API 1982#if EV_FEATURE_API
741# 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)
742# 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)
743# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else 1986#else
745# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
751 1993
752/*****************************************************************************/ 1994/*****************************************************************************/
753 1995
754#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
755ev_tstamp 1997ev_tstamp
756ev_time (void) 1998ev_time (void) EV_NOEXCEPT
757{ 1999{
758#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
759 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
760 { 2002 {
761 struct timespec ts; 2003 struct timespec ts;
762 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
763 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
764 } 2006 }
765#endif 2007#endif
766 2008
767 struct timeval tv; 2009 struct timeval tv;
768 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
769 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
770} 2012}
771#endif 2013#endif
772 2014
773inline_size ev_tstamp 2015inline_size ev_tstamp
774get_clock (void) 2016get_clock (void)
775{ 2017{
776#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
777 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
778 { 2020 {
779 struct timespec ts; 2021 struct timespec ts;
780 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
781 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
782 } 2024 }
783#endif 2025#endif
784 2026
785 return ev_time (); 2027 return ev_time ();
786} 2028}
787 2029
788#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
789ev_tstamp 2031ev_tstamp
790ev_now (EV_P) 2032ev_now (EV_P) EV_NOEXCEPT
791{ 2033{
792 return ev_rt_now; 2034 return ev_rt_now;
793} 2035}
794#endif 2036#endif
795 2037
796void 2038void
797ev_sleep (ev_tstamp delay) 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
798{ 2040{
799 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
800 { 2042 {
801#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
802 struct timespec ts; 2044 struct timespec ts;
803 2045
804 EV_TS_SET (ts, delay); 2046 EV_TS_SET (ts, delay);
805 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
806#elif defined(_WIN32) 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
807 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
808#else 2052#else
809 struct timeval tv; 2053 struct timeval tv;
810 2054
811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
812 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
… …
815 select (0, 0, 0, 0, &tv); 2059 select (0, 0, 0, 0, &tv);
816#endif 2060#endif
817 } 2061 }
818} 2062}
819 2063
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
828/*****************************************************************************/ 2064/*****************************************************************************/
829 2065
830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2066#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
831 2067
832/* find a suitable new size for the given array, */ 2068/* find a suitable new size for the given array, */
… …
838 2074
839 do 2075 do
840 ncur <<= 1; 2076 ncur <<= 1;
841 while (cnt > ncur); 2077 while (cnt > ncur);
842 2078
843 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2079 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
844 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2080 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
845 { 2081 {
846 ncur *= elem; 2082 ncur *= elem;
847 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2083 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
848 ncur = ncur - sizeof (void *) * 4; 2084 ncur = ncur - sizeof (void *) * 4;
… …
850 } 2086 }
851 2087
852 return ncur; 2088 return ncur;
853} 2089}
854 2090
855static noinline void * 2091ecb_noinline ecb_cold
2092static void *
856array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
857{ 2094{
858 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
859 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
860} 2097}
861 2098
2099#define array_needsize_noinit(base,offset,count)
2100
862#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
863 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
864 2103
865#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
866 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
867 { \ 2106 { \
868 int ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
869 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
870 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
871 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
872 } 2111 }
873 2112
874#if 0 2113#if 0
875#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
876 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
885 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
886 2125
887/*****************************************************************************/ 2126/*****************************************************************************/
888 2127
889/* dummy callback for pending events */ 2128/* dummy callback for pending events */
890static void noinline 2129ecb_noinline
2130static void
891pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
892{ 2132{
893} 2133}
894 2134
895void noinline 2135ecb_noinline
2136void
896ev_feed_event (EV_P_ void *w, int revents) 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
897{ 2138{
898 W w_ = (W)w; 2139 W w_ = (W)w;
899 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
900 2141
901 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
902 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
903 else 2144 else
904 { 2145 {
905 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
906 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
907 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
908 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
909 } 2150 }
2151
2152 pendingpri = NUMPRI - 1;
910} 2153}
911 2154
912inline_speed void 2155inline_speed void
913feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
914{ 2157{
915 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
916 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
917} 2160}
918 2161
919inline_size void 2162inline_size void
920feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
955inline_speed void 2198inline_speed void
956fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
957{ 2200{
958 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
959 2202
960 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
961 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
962} 2205}
963 2206
964void 2207void
965ev_feed_fd_event (EV_P_ int fd, int revents) 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
966{ 2209{
967 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
968 fd_event_nocheck (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
969} 2212}
970 2213
… …
973inline_size void 2216inline_size void
974fd_reify (EV_P) 2217fd_reify (EV_P)
975{ 2218{
976 int i; 2219 int i;
977 2220
2221#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2222 for (i = 0; i < fdchangecnt; ++i)
2223 {
2224 int fd = fdchanges [i];
2225 ANFD *anfd = anfds + fd;
2226
2227 if (anfd->reify & EV__IOFDSET && anfd->head)
2228 {
2229 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2230
2231 if (handle != anfd->handle)
2232 {
2233 unsigned long arg;
2234
2235 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2236
2237 /* handle changed, but fd didn't - we need to do it in two steps */
2238 backend_modify (EV_A_ fd, anfd->events, 0);
2239 anfd->events = 0;
2240 anfd->handle = handle;
2241 }
2242 }
2243 }
2244#endif
2245
978 for (i = 0; i < fdchangecnt; ++i) 2246 for (i = 0; i < fdchangecnt; ++i)
979 { 2247 {
980 int fd = fdchanges [i]; 2248 int fd = fdchanges [i];
981 ANFD *anfd = anfds + fd; 2249 ANFD *anfd = anfds + fd;
982 ev_io *w; 2250 ev_io *w;
983 2251
984 unsigned char o_events = anfd->events; 2252 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify; 2253 unsigned char o_reify = anfd->reify;
986 2254
987 anfd->reify = 0; 2255 anfd->reify = 0;
988 2256
989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
990 if (o_reify & EV__IOFDSET)
991 {
992 unsigned long arg;
993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
996 }
997#endif
998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1000 { 2258 {
1001 anfd->events = 0; 2259 anfd->events = 0;
1002 2260
1003 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1004 anfd->events |= (unsigned char)w->events; 2262 anfd->events |= (unsigned char)w->events;
… …
1013 2271
1014 fdchangecnt = 0; 2272 fdchangecnt = 0;
1015} 2273}
1016 2274
1017/* something about the given fd changed */ 2275/* something about the given fd changed */
1018inline_size void 2276inline_size
2277void
1019fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
1020{ 2279{
1021 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
1022 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
1023 2282
1024 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
1025 { 2284 {
1026 ++fdchangecnt; 2285 ++fdchangecnt;
1027 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1028 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
1029 } 2288 }
1030} 2289}
1031 2290
1032/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1033inline_speed void 2292inline_speed ecb_cold void
1034fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
1035{ 2294{
1036 ev_io *w; 2295 ev_io *w;
1037 2296
1038 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
1041 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1042 } 2301 }
1043} 2302}
1044 2303
1045/* check whether the given fd is actually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
1046inline_size int 2305inline_size ecb_cold int
1047fd_valid (int fd) 2306fd_valid (int fd)
1048{ 2307{
1049#ifdef _WIN32 2308#ifdef _WIN32
1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1051#else 2310#else
1052 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
1053#endif 2312#endif
1054} 2313}
1055 2314
1056/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
1057static void noinline 2316ecb_noinline ecb_cold
2317static void
1058fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
1059{ 2319{
1060 int fd; 2320 int fd;
1061 2321
1062 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
1064 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
1065 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
1066} 2326}
1067 2327
1068/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
1069static void noinline 2329ecb_noinline ecb_cold
2330static void
1070fd_enomem (EV_P) 2331fd_enomem (EV_P)
1071{ 2332{
1072 int fd; 2333 int fd;
1073 2334
1074 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
… …
1078 break; 2339 break;
1079 } 2340 }
1080} 2341}
1081 2342
1082/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
1083static void noinline 2344ecb_noinline
2345static void
1084fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
1085{ 2347{
1086 int fd; 2348 int fd;
1087 2349
1088 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
1141 ev_tstamp minat; 2403 ev_tstamp minat;
1142 ANHE *minpos; 2404 ANHE *minpos;
1143 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1144 2406
1145 /* find minimum child */ 2407 /* find minimum child */
1146 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
1147 { 2409 {
1148 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1149 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1150 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2412 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1151 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1152 } 2414 }
1153 else if (pos < E) 2415 else if (pos < E)
1154 { 2416 {
1155 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1156 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2418 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1157 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2419 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1158 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1159 } 2421 }
1160 else 2422 else
1161 break; 2423 break;
1162 2424
1163 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
1171 2433
1172 heap [k] = he; 2434 heap [k] = he;
1173 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
1174} 2436}
1175 2437
1176#else /* 4HEAP */ 2438#else /* not 4HEAP */
1177 2439
1178#define HEAP0 1 2440#define HEAP0 1
1179#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
1180#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
1181 2443
… …
1269 2531
1270/*****************************************************************************/ 2532/*****************************************************************************/
1271 2533
1272#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1273 2535
1274static void noinline 2536ecb_noinline ecb_cold
2537static void
1275evpipe_init (EV_P) 2538evpipe_init (EV_P)
1276{ 2539{
1277 if (!ev_is_active (&pipe_w)) 2540 if (!ev_is_active (&pipe_w))
1278 { 2541 {
2542 int fds [2];
2543
1279# if EV_USE_EVENTFD 2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1281 if (evfd < 0 && errno == EINVAL) 2547 if (fds [1] < 0 && errno == EINVAL)
1282 evfd = eventfd (0, 0); 2548 fds [1] = eventfd (0, 0);
1283 2549
1284 if (evfd >= 0) 2550 if (fds [1] < 0)
2551# endif
1285 { 2552 {
2553 while (pipe (fds))
2554 ev_syserr ("(libev) error creating signal/async pipe");
2555
2556 fd_intern (fds [0]);
2557 }
2558
1286 evpipe [0] = -1; 2559 evpipe [0] = fds [0];
1287 fd_intern (evfd); /* doing it twice doesn't hurt */ 2560
1288 ev_io_set (&pipe_w, evfd, EV_READ); 2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2577 ev_io_start (EV_A_ &pipe_w);
2578 ev_unref (EV_A); /* watcher should not keep loop alive */
2579 }
2580}
2581
2582inline_speed void
2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2584{
2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2586
2587 if (ecb_expect_true (*flag))
2588 return;
2589
2590 *flag = 1;
2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2592
2593 pipe_write_skipped = 1;
2594
2595 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2596
2597 if (pipe_write_wanted)
2598 {
2599 int old_errno;
2600
2601 pipe_write_skipped = 0;
2602 ECB_MEMORY_FENCE_RELEASE;
2603
2604 old_errno = errno; /* save errno because write will clobber it */
2605
2606#if EV_USE_EVENTFD
2607 if (evpipe [0] < 0)
2608 {
2609 uint64_t counter = 1;
2610 write (evpipe [1], &counter, sizeof (uint64_t));
1289 } 2611 }
1290 else 2612 else
1291# endif 2613#endif
1292 { 2614 {
1293 while (pipe (evpipe)) 2615#ifdef _WIN32
1294 ev_syserr ("(libev) error creating signal/async pipe"); 2616 WSABUF buf;
1295 2617 DWORD sent;
1296 fd_intern (evpipe [0]); 2618 buf.buf = (char *)&buf;
1297 fd_intern (evpipe [1]); 2619 buf.len = 1;
1298 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2621#else
2622 write (evpipe [1], &(evpipe [1]), 1);
2623#endif
1299 } 2624 }
1300
1301 ev_io_start (EV_A_ &pipe_w);
1302 ev_unref (EV_A); /* watcher should not keep loop alive */
1303 }
1304}
1305
1306inline_size void
1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1308{
1309 if (!*flag)
1310 {
1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1313
1314 *flag = 1;
1315
1316#if EV_USE_EVENTFD
1317 if (evfd >= 0)
1318 {
1319 uint64_t counter = 1;
1320 write (evfd, &counter, sizeof (uint64_t));
1321 }
1322 else
1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1329 write (evpipe [1], &dummy, 1);
1330 2625
1331 errno = old_errno; 2626 errno = old_errno;
1332 } 2627 }
1333} 2628}
1334 2629
… …
1337static void 2632static void
1338pipecb (EV_P_ ev_io *iow, int revents) 2633pipecb (EV_P_ ev_io *iow, int revents)
1339{ 2634{
1340 int i; 2635 int i;
1341 2636
2637 if (revents & EV_READ)
2638 {
1342#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1343 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1344 { 2641 {
1345 uint64_t counter; 2642 uint64_t counter;
1346 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1347 } 2644 }
1348 else 2645 else
1349#endif 2646#endif
1350 { 2647 {
1351 char dummy; 2648 char dummy[4];
1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2649#ifdef _WIN32
2650 WSABUF buf;
2651 DWORD recvd;
2652 DWORD flags = 0;
2653 buf.buf = dummy;
2654 buf.len = sizeof (dummy);
2655 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2656#else
1353 read (evpipe [0], &dummy, 1); 2657 read (evpipe [0], &dummy, sizeof (dummy));
2658#endif
2659 }
1354 } 2660 }
1355 2661
2662 pipe_write_skipped = 0;
2663
2664 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2665
2666#if EV_SIGNAL_ENABLE
1356 if (sig_pending) 2667 if (sig_pending)
1357 { 2668 {
1358 sig_pending = 0; 2669 sig_pending = 0;
1359 2670
2671 ECB_MEMORY_FENCE;
2672
1360 for (i = EV_NSIG - 1; i--; ) 2673 for (i = EV_NSIG - 1; i--; )
1361 if (expect_false (signals [i].pending)) 2674 if (ecb_expect_false (signals [i].pending))
1362 ev_feed_signal_event (EV_A_ i + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1363 } 2676 }
2677#endif
1364 2678
1365#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
1366 if (async_pending) 2680 if (async_pending)
1367 { 2681 {
1368 async_pending = 0; 2682 async_pending = 0;
2683
2684 ECB_MEMORY_FENCE;
1369 2685
1370 for (i = asynccnt; i--; ) 2686 for (i = asynccnt; i--; )
1371 if (asyncs [i]->sent) 2687 if (asyncs [i]->sent)
1372 { 2688 {
1373 asyncs [i]->sent = 0; 2689 asyncs [i]->sent = 0;
2690 ECB_MEMORY_FENCE_RELEASE;
1374 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2691 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1375 } 2692 }
1376 } 2693 }
1377#endif 2694#endif
1378} 2695}
1379 2696
1380/*****************************************************************************/ 2697/*****************************************************************************/
1381 2698
1382void 2699void
1383ev_feed_signal (int signum) 2700ev_feed_signal (int signum) EV_NOEXCEPT
1384{ 2701{
1385#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
1386 EV_P = signals [signum - 1].loop; 2705 EV_A = signals [signum - 1].loop;
1387 2706
1388 if (!EV_A) 2707 if (!EV_A)
1389 return; 2708 return;
1390#endif 2709#endif
1391 2710
… …
1401#endif 2720#endif
1402 2721
1403 ev_feed_signal (signum); 2722 ev_feed_signal (signum);
1404} 2723}
1405 2724
1406void noinline 2725ecb_noinline
2726void
1407ev_feed_signal_event (EV_P_ int signum) 2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1408{ 2728{
1409 WL w; 2729 WL w;
1410 2730
1411 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1412 return; 2732 return;
1413 2733
1414 --signum; 2734 --signum;
1415 2735
1416#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
1417 /* it is permissible to try to feed a signal to the wrong loop */ 2737 /* it is permissible to try to feed a signal to the wrong loop */
1418 /* or, likely more useful, feeding a signal nobody is waiting for */ 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
1419 2739
1420 if (expect_false (signals [signum].loop != EV_A)) 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
1421 return; 2741 return;
1422#endif 2742#endif
1423 2743
1424 signals [signum].pending = 0; 2744 signals [signum].pending = 0;
2745 ECB_MEMORY_FENCE_RELEASE;
1425 2746
1426 for (w = signals [signum].head; w; w = w->next) 2747 for (w = signals [signum].head; w; w = w->next)
1427 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1428} 2749}
1429 2750
… …
1520# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
1521#endif 2842#endif
1522#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
1523# include "ev_epoll.c" 2844# include "ev_epoll.c"
1524#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
1525#if EV_USE_POLL 2852#if EV_USE_POLL
1526# include "ev_poll.c" 2853# include "ev_poll.c"
1527#endif 2854#endif
1528#if EV_USE_SELECT 2855#if EV_USE_SELECT
1529# include "ev_select.c" 2856# include "ev_select.c"
1530#endif 2857#endif
1531 2858
1532int 2859ecb_cold int
1533ev_version_major (void) 2860ev_version_major (void) EV_NOEXCEPT
1534{ 2861{
1535 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
1536} 2863}
1537 2864
1538int 2865ecb_cold int
1539ev_version_minor (void) 2866ev_version_minor (void) EV_NOEXCEPT
1540{ 2867{
1541 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
1542} 2869}
1543 2870
1544/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
1545int inline_size 2872inline_size ecb_cold int
1546enable_secure (void) 2873enable_secure (void)
1547{ 2874{
1548#ifdef _WIN32 2875#ifdef _WIN32
1549 return 0; 2876 return 0;
1550#else 2877#else
1551 return getuid () != geteuid () 2878 return getuid () != geteuid ()
1552 || getgid () != getegid (); 2879 || getgid () != getegid ();
1553#endif 2880#endif
1554} 2881}
1555 2882
2883ecb_cold
1556unsigned int 2884unsigned int
1557ev_supported_backends (void) 2885ev_supported_backends (void) EV_NOEXCEPT
1558{ 2886{
1559 unsigned int flags = 0; 2887 unsigned int flags = 0;
1560 2888
1561 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1562 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1563 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1564 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1565 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1566 2896
1567 return flags; 2897 return flags;
1568} 2898}
1569 2899
2900ecb_cold
1570unsigned int 2901unsigned int
1571ev_recommended_backends (void) 2902ev_recommended_backends (void) EV_NOEXCEPT
1572{ 2903{
1573 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
1574 2905
1575#ifndef __NetBSD__ 2906#ifndef __NetBSD__
1576 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
1584#endif 2915#endif
1585#ifdef __FreeBSD__ 2916#ifdef __FreeBSD__
1586 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1587#endif 2918#endif
1588 2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
2928
1589 return flags; 2929 return flags;
1590} 2930}
1591 2931
2932ecb_cold
1592unsigned int 2933unsigned int
1593ev_embeddable_backends (void) 2934ev_embeddable_backends (void) EV_NOEXCEPT
1594{ 2935{
1595 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1596 2937
1597 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1598 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1599 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
1600 2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
2948
1601 return flags; 2949 return flags;
1602} 2950}
1603 2951
1604unsigned int 2952unsigned int
1605ev_backend (EV_P) 2953ev_backend (EV_P) EV_NOEXCEPT
1606{ 2954{
1607 return backend; 2955 return backend;
1608} 2956}
1609 2957
1610#if EV_FEATURE_API 2958#if EV_FEATURE_API
1611unsigned int 2959unsigned int
1612ev_iteration (EV_P) 2960ev_iteration (EV_P) EV_NOEXCEPT
1613{ 2961{
1614 return loop_count; 2962 return loop_count;
1615} 2963}
1616 2964
1617unsigned int 2965unsigned int
1618ev_depth (EV_P) 2966ev_depth (EV_P) EV_NOEXCEPT
1619{ 2967{
1620 return loop_depth; 2968 return loop_depth;
1621} 2969}
1622 2970
1623void 2971void
1624ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1625{ 2973{
1626 io_blocktime = interval; 2974 io_blocktime = interval;
1627} 2975}
1628 2976
1629void 2977void
1630ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1631{ 2979{
1632 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
1633} 2981}
1634 2982
1635void 2983void
1636ev_set_userdata (EV_P_ void *data) 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1637{ 2985{
1638 userdata = data; 2986 userdata = data;
1639} 2987}
1640 2988
1641void * 2989void *
1642ev_userdata (EV_P) 2990ev_userdata (EV_P) EV_NOEXCEPT
1643{ 2991{
1644 return userdata; 2992 return userdata;
1645} 2993}
1646 2994
2995void
1647void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1648{ 2997{
1649 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
1650} 2999}
1651 3000
3001void
1652void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1653{ 3003{
1654 release_cb = release; 3004 release_cb = release;
1655 acquire_cb = acquire; 3005 acquire_cb = acquire;
1656} 3006}
1657#endif 3007#endif
1658 3008
1659/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
1660static void noinline 3010ecb_noinline ecb_cold
3011static void
1661loop_init (EV_P_ unsigned int flags) 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1662{ 3013{
1663 if (!backend) 3014 if (!backend)
1664 { 3015 {
1665 origflags = flags; 3016 origflags = flags;
1666 3017
… …
1693 if (!(flags & EVFLAG_NOENV) 3044 if (!(flags & EVFLAG_NOENV)
1694 && !enable_secure () 3045 && !enable_secure ()
1695 && getenv ("LIBEV_FLAGS")) 3046 && getenv ("LIBEV_FLAGS"))
1696 flags = atoi (getenv ("LIBEV_FLAGS")); 3047 flags = atoi (getenv ("LIBEV_FLAGS"));
1697 3048
1698 ev_rt_now = ev_time (); 3049 ev_rt_now = ev_time ();
1699 mn_now = get_clock (); 3050 mn_now = get_clock ();
1700 now_floor = mn_now; 3051 now_floor = mn_now;
1701 rtmn_diff = ev_rt_now - mn_now; 3052 rtmn_diff = ev_rt_now - mn_now;
1702#if EV_FEATURE_API 3053#if EV_FEATURE_API
1703 invoke_cb = ev_invoke_pending; 3054 invoke_cb = ev_invoke_pending;
1704#endif 3055#endif
1705 3056
1706 io_blocktime = 0.; 3057 io_blocktime = 0.;
1707 timeout_blocktime = 0.; 3058 timeout_blocktime = 0.;
1708 backend = 0; 3059 backend = 0;
1709 backend_fd = -1; 3060 backend_fd = -1;
1710 sig_pending = 0; 3061 sig_pending = 0;
1711#if EV_ASYNC_ENABLE 3062#if EV_ASYNC_ENABLE
1712 async_pending = 0; 3063 async_pending = 0;
1713#endif 3064#endif
3065 pipe_write_skipped = 0;
3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
1714#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1716#endif 3071#endif
1717#if EV_USE_SIGNALFD 3072#if EV_USE_SIGNALFD
1718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1719#endif 3074#endif
1720 3075
1721 if (!(flags & EVBACKEND_MASK)) 3076 if (!(flags & EVBACKEND_MASK))
1722 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
1723 3078
1724#if EV_USE_IOCP 3079#if EV_USE_IOCP
1725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1726#endif 3081#endif
1727#if EV_USE_PORT 3082#if EV_USE_PORT
1728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1729#endif 3084#endif
1730#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
1731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1732#endif 3093#endif
1733#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
1734 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1735#endif 3096#endif
1736#if EV_USE_POLL 3097#if EV_USE_POLL
1737 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1738#endif 3099#endif
1739#if EV_USE_SELECT 3100#if EV_USE_SELECT
1740 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1741#endif 3102#endif
1742 3103
1743 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
1744 3105
1745#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1748#endif 3109#endif
1749 } 3110 }
1750} 3111}
1751 3112
1752/* free up a loop structure */ 3113/* free up a loop structure */
3114ecb_cold
1753void 3115void
1754ev_loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
1755{ 3117{
1756 int i; 3118 int i;
1757 3119
… …
1761 return; 3123 return;
1762#endif 3124#endif
1763 3125
1764#if EV_CLEANUP_ENABLE 3126#if EV_CLEANUP_ENABLE
1765 /* queue cleanup watchers (and execute them) */ 3127 /* queue cleanup watchers (and execute them) */
1766 if (expect_false (cleanupcnt)) 3128 if (ecb_expect_false (cleanupcnt))
1767 { 3129 {
1768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1769 EV_INVOKE_PENDING; 3131 EV_INVOKE_PENDING;
1770 } 3132 }
1771#endif 3133#endif
1772 3134
1773#if EV_CHILD_ENABLE 3135#if EV_CHILD_ENABLE
1774 if (ev_is_active (&childev)) 3136 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1775 { 3137 {
1776 ev_ref (EV_A); /* child watcher */ 3138 ev_ref (EV_A); /* child watcher */
1777 ev_signal_stop (EV_A_ &childev); 3139 ev_signal_stop (EV_A_ &childev);
1778 } 3140 }
1779#endif 3141#endif
… …
1781 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
1782 { 3144 {
1783 /*ev_ref (EV_A);*/ 3145 /*ev_ref (EV_A);*/
1784 /*ev_io_stop (EV_A_ &pipe_w);*/ 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
1785 3147
1786#if EV_USE_EVENTFD
1787 if (evfd >= 0)
1788 close (evfd);
1789#endif
1790
1791 if (evpipe [0] >= 0)
1792 {
1793 EV_WIN32_CLOSE_FD (evpipe [0]); 3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1794 EV_WIN32_CLOSE_FD (evpipe [1]); 3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1795 }
1796 } 3150 }
1797 3151
1798#if EV_USE_SIGNALFD 3152#if EV_USE_SIGNALFD
1799 if (ev_is_active (&sigfd_w)) 3153 if (ev_is_active (&sigfd_w))
1800 close (sigfd); 3154 close (sigfd);
… …
1807 3161
1808 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
1809 close (backend_fd); 3163 close (backend_fd);
1810 3164
1811#if EV_USE_IOCP 3165#if EV_USE_IOCP
1812 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1813#endif 3167#endif
1814#if EV_USE_PORT 3168#if EV_USE_PORT
1815 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1816#endif 3170#endif
1817#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
1818 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1819#endif 3179#endif
1820#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
1821 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1822#endif 3182#endif
1823#if EV_USE_POLL 3183#if EV_USE_POLL
1824 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1825#endif 3185#endif
1826#if EV_USE_SELECT 3186#if EV_USE_SELECT
1827 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1828#endif 3188#endif
1829 3189
1830 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
1831 { 3191 {
1832 array_free (pending, [i]); 3192 array_free (pending, [i]);
… …
1874 3234
1875inline_size void 3235inline_size void
1876loop_fork (EV_P) 3236loop_fork (EV_P)
1877{ 3237{
1878#if EV_USE_PORT 3238#if EV_USE_PORT
1879 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1880#endif 3240#endif
1881#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
1882 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1883#endif 3249#endif
1884#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
1885 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1886#endif 3252#endif
1887#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
1888 infy_fork (EV_A); 3254 infy_fork (EV_A);
1889#endif 3255#endif
1890 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1891 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
1892 { 3259 {
1893 /* this "locks" the handlers against writing to the pipe */ 3260 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1894 /* while we modify the fd vars */
1895 sig_pending = 1;
1896#if EV_ASYNC_ENABLE
1897 async_pending = 1;
1898#endif
1899 3261
1900 ev_ref (EV_A); 3262 ev_ref (EV_A);
1901 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
1902 3264
1903#if EV_USE_EVENTFD
1904 if (evfd >= 0)
1905 close (evfd);
1906#endif
1907
1908 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
1909 {
1910 EV_WIN32_CLOSE_FD (evpipe [0]); 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
1911 EV_WIN32_CLOSE_FD (evpipe [1]);
1912 }
1913 3267
1914#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1915 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
1916 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
1917 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1918#endif
1919 } 3271 }
3272#endif
1920 3273
1921 postfork = 0; 3274 postfork = 0;
1922} 3275}
1923 3276
1924#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
1925 3278
3279ecb_cold
1926struct ev_loop * 3280struct ev_loop *
1927ev_loop_new (unsigned int flags) 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
1928{ 3282{
1929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1930 3284
1931 memset (EV_A, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
1932 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
… …
1939} 3293}
1940 3294
1941#endif /* multiplicity */ 3295#endif /* multiplicity */
1942 3296
1943#if EV_VERIFY 3297#if EV_VERIFY
1944static void noinline 3298ecb_noinline ecb_cold
3299static void
1945verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
1946{ 3301{
1947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1948 3303
1949 if (w->pending) 3304 if (w->pending)
1950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1951} 3306}
1952 3307
1953static void noinline 3308ecb_noinline ecb_cold
3309static void
1954verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
1955{ 3311{
1956 int i; 3312 int i;
1957 3313
1958 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1963 3319
1964 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1965 } 3321 }
1966} 3322}
1967 3323
1968static void noinline 3324ecb_noinline ecb_cold
3325static void
1969array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
1970{ 3327{
1971 while (cnt--) 3328 while (cnt--)
1972 { 3329 {
1973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1975 } 3332 }
1976} 3333}
1977#endif 3334#endif
1978 3335
1979#if EV_FEATURE_API 3336#if EV_FEATURE_API
1980void 3337void ecb_cold
1981ev_verify (EV_P) 3338ev_verify (EV_P) EV_NOEXCEPT
1982{ 3339{
1983#if EV_VERIFY 3340#if EV_VERIFY
1984 int i; 3341 int i;
1985 WL w; 3342 WL w, w2;
1986 3343
1987 assert (activecnt >= -1); 3344 assert (activecnt >= -1);
1988 3345
1989 assert (fdchangemax >= fdchangecnt); 3346 assert (fdchangemax >= fdchangecnt);
1990 for (i = 0; i < fdchangecnt; ++i) 3347 for (i = 0; i < fdchangecnt; ++i)
1991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3348 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1992 3349
1993 assert (anfdmax >= 0); 3350 assert (anfdmax >= 0);
1994 for (i = 0; i < anfdmax; ++i) 3351 for (i = 0; i < anfdmax; ++i)
3352 {
3353 int j = 0;
3354
1995 for (w = anfds [i].head; w; w = w->next) 3355 for (w = w2 = anfds [i].head; w; w = w->next)
1996 { 3356 {
1997 verify_watcher (EV_A_ (W)w); 3357 verify_watcher (EV_A_ (W)w);
3358
3359 if (j++ & 1)
3360 {
3361 assert (("libev: io watcher list contains a loop", w != w2));
3362 w2 = w2->next;
3363 }
3364
1998 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3365 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1999 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3366 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2000 } 3367 }
3368 }
2001 3369
2002 assert (timermax >= timercnt); 3370 assert (timermax >= timercnt);
2003 verify_heap (EV_A_ timers, timercnt); 3371 verify_heap (EV_A_ timers, timercnt);
2004 3372
2005#if EV_PERIODIC_ENABLE 3373#if EV_PERIODIC_ENABLE
… …
2051#endif 3419#endif
2052} 3420}
2053#endif 3421#endif
2054 3422
2055#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
2056struct ev_loop * 3425struct ev_loop *
2057#else 3426#else
2058int 3427int
2059#endif 3428#endif
2060ev_default_loop (unsigned int flags) 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
2061{ 3430{
2062 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
2063 { 3432 {
2064#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
2065 EV_P = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2084 3453
2085 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
2086} 3455}
2087 3456
2088void 3457void
2089ev_loop_fork (EV_P) 3458ev_loop_fork (EV_P) EV_NOEXCEPT
2090{ 3459{
2091 postfork = 1; /* must be in line with ev_default_fork */ 3460 postfork = 1;
2092} 3461}
2093 3462
2094/*****************************************************************************/ 3463/*****************************************************************************/
2095 3464
2096void 3465void
… …
2098{ 3467{
2099 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
2100} 3469}
2101 3470
2102unsigned int 3471unsigned int
2103ev_pending_count (EV_P) 3472ev_pending_count (EV_P) EV_NOEXCEPT
2104{ 3473{
2105 int pri; 3474 int pri;
2106 unsigned int count = 0; 3475 unsigned int count = 0;
2107 3476
2108 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
2109 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
2110 3479
2111 return count; 3480 return count;
2112} 3481}
2113 3482
2114void noinline 3483ecb_noinline
3484void
2115ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
2116{ 3486{
2117 int pri; 3487 pendingpri = NUMPRI;
2118 3488
2119 for (pri = NUMPRI; pri--; ) 3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
2120 while (pendingcnt [pri]) 3494 while (pendingcnt [pendingpri])
2121 { 3495 {
2122 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2123 3497
2124 p->w->pending = 0; 3498 p->w->pending = 0;
2125 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
2126 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2127 } 3501 }
3502 }
3503 while (pendingpri);
2128} 3504}
2129 3505
2130#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
2131/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
2132/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
2133inline_size void 3509inline_size void
2134idle_reify (EV_P) 3510idle_reify (EV_P)
2135{ 3511{
2136 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
2137 { 3513 {
2138 int pri; 3514 int pri;
2139 3515
2140 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
2141 { 3517 {
… …
2171 { 3547 {
2172 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
2173 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
2174 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
2175 3551
2176 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2177 3553
2178 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
2179 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
2180 } 3556 }
2181 else 3557 else
… …
2189 feed_reverse_done (EV_A_ EV_TIMER); 3565 feed_reverse_done (EV_A_ EV_TIMER);
2190 } 3566 }
2191} 3567}
2192 3568
2193#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
3570
3571ecb_noinline
3572static void
3573periodic_recalc (EV_P_ ev_periodic *w)
3574{
3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3577
3578 /* the above almost always errs on the low side */
3579 while (at <= ev_rt_now)
3580 {
3581 ev_tstamp nat = at + w->interval;
3582
3583 /* when resolution fails us, we use ev_rt_now */
3584 if (ecb_expect_false (nat == at))
3585 {
3586 at = ev_rt_now;
3587 break;
3588 }
3589
3590 at = nat;
3591 }
3592
3593 ev_at (w) = at;
3594}
3595
2194/* make periodics pending */ 3596/* make periodics pending */
2195inline_size void 3597inline_size void
2196periodics_reify (EV_P) 3598periodics_reify (EV_P)
2197{ 3599{
2198 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2199 3601
2200 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3602 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2201 { 3603 {
2202 int feed_count = 0;
2203
2204 do 3604 do
2205 { 3605 {
2206 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3606 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2207 3607
2208 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3608 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2217 ANHE_at_cache (periodics [HEAP0]); 3617 ANHE_at_cache (periodics [HEAP0]);
2218 downheap (periodics, periodiccnt, HEAP0); 3618 downheap (periodics, periodiccnt, HEAP0);
2219 } 3619 }
2220 else if (w->interval) 3620 else if (w->interval)
2221 { 3621 {
2222 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3622 periodic_recalc (EV_A_ w);
2223 /* if next trigger time is not sufficiently in the future, put it there */
2224 /* this might happen because of floating point inexactness */
2225 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2226 {
2227 ev_at (w) += w->interval;
2228
2229 /* if interval is unreasonably low we might still have a time in the past */
2230 /* so correct this. this will make the periodic very inexact, but the user */
2231 /* has effectively asked to get triggered more often than possible */
2232 if (ev_at (w) < ev_rt_now)
2233 ev_at (w) = ev_rt_now;
2234 }
2235
2236 ANHE_at_cache (periodics [HEAP0]); 3623 ANHE_at_cache (periodics [HEAP0]);
2237 downheap (periodics, periodiccnt, HEAP0); 3624 downheap (periodics, periodiccnt, HEAP0);
2238 } 3625 }
2239 else 3626 else
2240 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3627 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2248 } 3635 }
2249} 3636}
2250 3637
2251/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
2252/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
2253static void noinline 3640ecb_noinline ecb_cold
3641static void
2254periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2255{ 3643{
2256 int i; 3644 int i;
2257 3645
2258 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2261 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3649 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2262 3650
2263 if (w->reschedule_cb) 3651 if (w->reschedule_cb)
2264 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3652 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2265 else if (w->interval) 3653 else if (w->interval)
2266 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3654 periodic_recalc (EV_A_ w);
2267 3655
2268 ANHE_at_cache (periodics [i]); 3656 ANHE_at_cache (periodics [i]);
2269 } 3657 }
2270 3658
2271 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2272} 3660}
2273#endif 3661#endif
2274 3662
2275/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2276static void noinline 3664ecb_noinline ecb_cold
3665static void
2277timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2278{ 3667{
2279 int i; 3668 int i;
2280 3669
2281 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2290/* also detect if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2291inline_speed void 3680inline_speed void
2292time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2293{ 3682{
2294#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2295 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2296 { 3685 {
2297 int i; 3686 int i;
2298 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2299 3688
2300 mn_now = get_clock (); 3689 mn_now = get_clock ();
2301 3690
2302 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2303 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2304 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2305 { 3694 {
2306 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2307 return; 3696 return;
2308 } 3697 }
2309 3698
… …
2318 * doesn't hurt either as we only do this on time-jumps or 3707 * doesn't hurt either as we only do this on time-jumps or
2319 * in the unlikely event of having been preempted here. 3708 * in the unlikely event of having been preempted here.
2320 */ 3709 */
2321 for (i = 4; --i; ) 3710 for (i = 4; --i; )
2322 { 3711 {
3712 ev_tstamp diff;
2323 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2324 3714
2325 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3715 diff = odiff - rtmn_diff;
3716
3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2326 return; /* all is well */ 3718 return; /* all is well */
2327 3719
2328 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2329 mn_now = get_clock (); 3721 mn_now = get_clock ();
2330 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2339 else 3731 else
2340#endif 3732#endif
2341 { 3733 {
2342 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
2343 3735
2344 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2345 { 3737 {
2346 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* adjust timers. this is easy, as the offset is the same for all of them */
2347 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2348#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
2349 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
2352 3744
2353 mn_now = ev_rt_now; 3745 mn_now = ev_rt_now;
2354 } 3746 }
2355} 3747}
2356 3748
2357void 3749int
2358ev_run (EV_P_ int flags) 3750ev_run (EV_P_ int flags)
2359{ 3751{
2360#if EV_FEATURE_API 3752#if EV_FEATURE_API
2361 ++loop_depth; 3753 ++loop_depth;
2362#endif 3754#endif
… …
2372#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
2373 ev_verify (EV_A); 3765 ev_verify (EV_A);
2374#endif 3766#endif
2375 3767
2376#ifndef _WIN32 3768#ifndef _WIN32
2377 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2378 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
2379 { 3771 {
2380 curpid = getpid (); 3772 curpid = getpid ();
2381 postfork = 1; 3773 postfork = 1;
2382 } 3774 }
2383#endif 3775#endif
2384 3776
2385#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
2386 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
2387 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
2388 if (forkcnt) 3780 if (forkcnt)
2389 { 3781 {
2390 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2391 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
2392 } 3784 }
2393#endif 3785#endif
2394 3786
2395#if EV_PREPARE_ENABLE 3787#if EV_PREPARE_ENABLE
2396 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
2397 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
2398 { 3790 {
2399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2400 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
2401 } 3793 }
2402#endif 3794#endif
2403 3795
2404 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
2405 break; 3797 break;
2406 3798
2407 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
2408 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
2409 loop_fork (EV_A); 3801 loop_fork (EV_A);
2410 3802
2411 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
2412 fd_reify (EV_A); 3804 fd_reify (EV_A);
2413 3805
… …
2418 3810
2419 /* remember old timestamp for io_blocktime calculation */ 3811 /* remember old timestamp for io_blocktime calculation */
2420 ev_tstamp prev_mn_now = mn_now; 3812 ev_tstamp prev_mn_now = mn_now;
2421 3813
2422 /* update time to cancel out callback processing overhead */ 3814 /* update time to cancel out callback processing overhead */
2423 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2424 3816
3817 /* from now on, we want a pipe-wake-up */
3818 pipe_write_wanted = 1;
3819
3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3821
2425 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2426 { 3823 {
2427 waittime = MAX_BLOCKTIME; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2428 3825
2429 if (timercnt) 3826 if (timercnt)
2430 { 3827 {
2431 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2432 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2433 } 3830 }
2434 3831
2435#if EV_PERIODIC_ENABLE 3832#if EV_PERIODIC_ENABLE
2436 if (periodiccnt) 3833 if (periodiccnt)
2437 { 3834 {
2438 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3835 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2439 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
2440 } 3837 }
2441#endif 3838#endif
2442 3839
2443 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
2444 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
2445 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
2446 3843
3844 /* at this point, we NEED to wait, so we have to ensure */
3845 /* to pass a minimum nonzero value to the backend */
3846 if (ecb_expect_false (waittime < backend_mintime))
3847 waittime = backend_mintime;
3848
2447 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
2448 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
2449 { 3851 {
2450 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2451 3853
2452 if (sleeptime > waittime - backend_fudge) 3854 if (sleeptime > waittime - backend_mintime)
2453 sleeptime = waittime - backend_fudge; 3855 sleeptime = waittime - backend_mintime;
2454 3856
2455 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2456 { 3858 {
2457 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
2458 waittime -= sleeptime; 3860 waittime -= sleeptime;
2459 } 3861 }
2460 } 3862 }
… …
2465#endif 3867#endif
2466 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3868 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2467 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
2468 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2469 3871
3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3873
3874 ECB_MEMORY_FENCE_ACQUIRE;
3875 if (pipe_write_skipped)
3876 {
3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3879 }
3880
2470 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
2471 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
2472 } 3883 }
2473 3884
2474 /* queue pending timers and reschedule them */ 3885 /* queue pending timers and reschedule them */
… …
2482 idle_reify (EV_A); 3893 idle_reify (EV_A);
2483#endif 3894#endif
2484 3895
2485#if EV_CHECK_ENABLE 3896#if EV_CHECK_ENABLE
2486 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
2487 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
2488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2489#endif 3900#endif
2490 3901
2491 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
2492 } 3903 }
2493 while (expect_true ( 3904 while (ecb_expect_true (
2494 activecnt 3905 activecnt
2495 && !loop_done 3906 && !loop_done
2496 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2497 )); 3908 ));
2498 3909
… …
2500 loop_done = EVBREAK_CANCEL; 3911 loop_done = EVBREAK_CANCEL;
2501 3912
2502#if EV_FEATURE_API 3913#if EV_FEATURE_API
2503 --loop_depth; 3914 --loop_depth;
2504#endif 3915#endif
2505}
2506 3916
3917 return activecnt;
3918}
3919
2507void 3920void
2508ev_break (EV_P_ int how) 3921ev_break (EV_P_ int how) EV_NOEXCEPT
2509{ 3922{
2510 loop_done = how; 3923 loop_done = how;
2511} 3924}
2512 3925
2513void 3926void
2514ev_ref (EV_P) 3927ev_ref (EV_P) EV_NOEXCEPT
2515{ 3928{
2516 ++activecnt; 3929 ++activecnt;
2517} 3930}
2518 3931
2519void 3932void
2520ev_unref (EV_P) 3933ev_unref (EV_P) EV_NOEXCEPT
2521{ 3934{
2522 --activecnt; 3935 --activecnt;
2523} 3936}
2524 3937
2525void 3938void
2526ev_now_update (EV_P) 3939ev_now_update (EV_P) EV_NOEXCEPT
2527{ 3940{
2528 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
2529} 3942}
2530 3943
2531void 3944void
2532ev_suspend (EV_P) 3945ev_suspend (EV_P) EV_NOEXCEPT
2533{ 3946{
2534 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
2535} 3948}
2536 3949
2537void 3950void
2538ev_resume (EV_P) 3951ev_resume (EV_P) EV_NOEXCEPT
2539{ 3952{
2540 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
2541 3954
2542 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
2543 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2560inline_size void 3973inline_size void
2561wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
2562{ 3975{
2563 while (*head) 3976 while (*head)
2564 { 3977 {
2565 if (expect_true (*head == elem)) 3978 if (ecb_expect_true (*head == elem))
2566 { 3979 {
2567 *head = elem->next; 3980 *head = elem->next;
2568 break; 3981 break;
2569 } 3982 }
2570 3983
… …
2582 w->pending = 0; 3995 w->pending = 0;
2583 } 3996 }
2584} 3997}
2585 3998
2586int 3999int
2587ev_clear_pending (EV_P_ void *w) 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2588{ 4001{
2589 W w_ = (W)w; 4002 W w_ = (W)w;
2590 int pending = w_->pending; 4003 int pending = w_->pending;
2591 4004
2592 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
2593 { 4006 {
2594 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2595 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
2596 w_->pending = 0; 4009 w_->pending = 0;
2597 return p->events; 4010 return p->events;
… …
2624 w->active = 0; 4037 w->active = 0;
2625} 4038}
2626 4039
2627/*****************************************************************************/ 4040/*****************************************************************************/
2628 4041
2629void noinline 4042ecb_noinline
4043void
2630ev_io_start (EV_P_ ev_io *w) 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2631{ 4045{
2632 int fd = w->fd; 4046 int fd = w->fd;
2633 4047
2634 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
2635 return; 4049 return;
2636 4050
2637 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2638 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2639 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
2640 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
2641 4058
2642 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
2643 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2644 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
4062
4063 /* common bug, apparently */
4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2645 4065
2646 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4066 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2647 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
2648 4068
2649 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
2650} 4070}
2651 4071
2652void noinline 4072ecb_noinline
4073void
2653ev_io_stop (EV_P_ ev_io *w) 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2654{ 4075{
2655 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
2656 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
2657 return; 4078 return;
2658 4079
2659 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2660 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
2661 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2662 4086
2663 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
2664 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
2665 4089
2666 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2667 4091
2668 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
2669} 4093}
2670 4094
2671void noinline 4095ecb_noinline
4096void
2672ev_timer_start (EV_P_ ev_timer *w) 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2673{ 4098{
2674 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
2675 return; 4100 return;
2676 4101
2677 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
2678 4103
2679 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2680 4105
2681 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
2682 4107
2683 ++timercnt; 4108 ++timercnt;
2684 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2685 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2686 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
2687 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
2688 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
2689 4114
2690 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
2691 4116
2692 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2693} 4118}
2694 4119
2695void noinline 4120ecb_noinline
4121void
2696ev_timer_stop (EV_P_ ev_timer *w) 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2697{ 4123{
2698 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2699 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
2700 return; 4126 return;
2701 4127
2702 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
2703 4129
2704 { 4130 {
… …
2706 4132
2707 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2708 4134
2709 --timercnt; 4135 --timercnt;
2710 4136
2711 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
2712 { 4138 {
2713 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
2714 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
2715 } 4141 }
2716 } 4142 }
… …
2720 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
2721 4147
2722 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2723} 4149}
2724 4150
2725void noinline 4151ecb_noinline
4152void
2726ev_timer_again (EV_P_ ev_timer *w) 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2727{ 4154{
2728 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
4156
4157 clear_pending (EV_A_ (W)w);
2729 4158
2730 if (ev_is_active (w)) 4159 if (ev_is_active (w))
2731 { 4160 {
2732 if (w->repeat) 4161 if (w->repeat)
2733 { 4162 {
… …
2746 4175
2747 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
2748} 4177}
2749 4178
2750ev_tstamp 4179ev_tstamp
2751ev_timer_remaining (EV_P_ ev_timer *w) 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2752{ 4181{
2753 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2754} 4183}
2755 4184
2756#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
2757void noinline 4186ecb_noinline
4187void
2758ev_periodic_start (EV_P_ ev_periodic *w) 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2759{ 4189{
2760 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
2761 return; 4191 return;
2762 4192
2763 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
2764 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2765 else if (w->interval) 4195 else if (w->interval)
2766 { 4196 {
2767 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4197 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2768 /* this formula differs from the one in periodic_reify because we do not always round up */ 4198 periodic_recalc (EV_A_ w);
2769 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2770 } 4199 }
2771 else 4200 else
2772 ev_at (w) = w->offset; 4201 ev_at (w) = w->offset;
2773 4202
2774 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
2775 4204
2776 ++periodiccnt; 4205 ++periodiccnt;
2777 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2778 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2779 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2780 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
2781 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
2782 4211
2783 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2784 4213
2785 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2786} 4215}
2787 4216
2788void noinline 4217ecb_noinline
4218void
2789ev_periodic_stop (EV_P_ ev_periodic *w) 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2790{ 4220{
2791 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
2792 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
2793 return; 4223 return;
2794 4224
2795 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2796 4226
2797 { 4227 {
… …
2799 4229
2800 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2801 4231
2802 --periodiccnt; 4232 --periodiccnt;
2803 4233
2804 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
2805 { 4235 {
2806 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
2807 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
2808 } 4238 }
2809 } 4239 }
… …
2811 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
2812 4242
2813 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
2814} 4244}
2815 4245
2816void noinline 4246ecb_noinline
4247void
2817ev_periodic_again (EV_P_ ev_periodic *w) 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2818{ 4249{
2819 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
2820 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
2821 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
2822} 4253}
… …
2826# define SA_RESTART 0 4257# define SA_RESTART 0
2827#endif 4258#endif
2828 4259
2829#if EV_SIGNAL_ENABLE 4260#if EV_SIGNAL_ENABLE
2830 4261
2831void noinline 4262ecb_noinline
4263void
2832ev_signal_start (EV_P_ ev_signal *w) 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2833{ 4265{
2834 if (expect_false (ev_is_active (w))) 4266 if (ecb_expect_false (ev_is_active (w)))
2835 return; 4267 return;
2836 4268
2837 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2838 4270
2839#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
2840 assert (("libev: a signal must not be attached to two different loops", 4272 assert (("libev: a signal must not be attached to two different loops",
2841 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2842 4274
2843 signals [w->signum - 1].loop = EV_A; 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
2844#endif 4277#endif
2845 4278
2846 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
2847 4280
2848#if EV_USE_SIGNALFD 4281#if EV_USE_SIGNALFD
… …
2907 } 4340 }
2908 4341
2909 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
2910} 4343}
2911 4344
2912void noinline 4345ecb_noinline
4346void
2913ev_signal_stop (EV_P_ ev_signal *w) 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2914{ 4348{
2915 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
2916 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
2917 return; 4351 return;
2918 4352
2919 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
2920 4354
2921 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2949#endif 4383#endif
2950 4384
2951#if EV_CHILD_ENABLE 4385#if EV_CHILD_ENABLE
2952 4386
2953void 4387void
2954ev_child_start (EV_P_ ev_child *w) 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2955{ 4389{
2956#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
2957 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2958#endif 4392#endif
2959 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
2960 return; 4394 return;
2961 4395
2962 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2963 4397
2964 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
… …
2966 4400
2967 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
2968} 4402}
2969 4403
2970void 4404void
2971ev_child_stop (EV_P_ ev_child *w) 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2972{ 4406{
2973 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
2975 return; 4409 return;
2976 4410
2977 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2978 4412
2979 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2993 4427
2994#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
2995#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2996#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
2997 4431
2998static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2999 4433
3000#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
3001 4435
3002/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4436/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3003# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3004 4438
3005static void noinline 4439ecb_noinline
4440static void
3006infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
3007{ 4442{
3008 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); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
3009 4447
3010 if (w->wd >= 0) 4448 if (w->wd >= 0)
3011 { 4449 {
3012 struct statfs sfs; 4450 struct statfs sfs;
3013 4451
… …
3017 4455
3018 if (!fs_2625) 4456 if (!fs_2625)
3019 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3020 else if (!statfs (w->path, &sfs) 4458 else if (!statfs (w->path, &sfs)
3021 && (sfs.f_type == 0x1373 /* devfs */ 4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
3022 || sfs.f_type == 0xEF53 /* ext2/3 */ 4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
3023 || sfs.f_type == 0x3153464a /* jfs */ 4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
3024 || sfs.f_type == 0x52654973 /* reiser3 */ 4468 || sfs.f_type == 0x52654973 /* reiser3 */
3025 || sfs.f_type == 0x01021994 /* tempfs */ 4469 || sfs.f_type == 0x01021994 /* tmpfs */
3026 || sfs.f_type == 0x58465342 /* xfs */)) 4470 || sfs.f_type == 0x58465342 /* xfs */))
3027 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3028 else 4472 else
3029 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3030 } 4474 }
… …
3051 if (!pend || pend == path) 4495 if (!pend || pend == path)
3052 break; 4496 break;
3053 4497
3054 *pend = 0; 4498 *pend = 0;
3055 w->wd = inotify_add_watch (fs_fd, path, mask); 4499 w->wd = inotify_add_watch (fs_fd, path, mask);
3056 } 4500 }
3057 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4501 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3058 } 4502 }
3059 } 4503 }
3060 4504
3061 if (w->wd >= 0) 4505 if (w->wd >= 0)
… …
3065 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3066 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
3067 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3068} 4512}
3069 4513
3070static void noinline 4514ecb_noinline
4515static void
3071infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
3072{ 4517{
3073 int slot; 4518 int slot;
3074 int wd = w->wd; 4519 int wd = w->wd;
3075 4520
… …
3082 4527
3083 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
3084 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
3085} 4530}
3086 4531
3087static void noinline 4532ecb_noinline
4533static void
3088infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3089{ 4535{
3090 if (slot < 0) 4536 if (slot < 0)
3091 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
3092 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3128 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3129 ofs += sizeof (struct inotify_event) + ev->len; 4575 ofs += sizeof (struct inotify_event) + ev->len;
3130 } 4576 }
3131} 4577}
3132 4578
3133inline_size void 4579inline_size ecb_cold
4580void
3134ev_check_2625 (EV_P) 4581ev_check_2625 (EV_P)
3135{ 4582{
3136 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
3137 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3138 */ 4585 */
… …
3143} 4590}
3144 4591
3145inline_size int 4592inline_size int
3146infy_newfd (void) 4593infy_newfd (void)
3147{ 4594{
3148#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4595#if defined IN_CLOEXEC && defined IN_NONBLOCK
3149 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4596 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3150 if (fd >= 0) 4597 if (fd >= 0)
3151 return fd; 4598 return fd;
3152#endif 4599#endif
3153 return inotify_init (); 4600 return inotify_init ();
… …
3228#else 4675#else
3229# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
3230#endif 4677#endif
3231 4678
3232void 4679void
3233ev_stat_stat (EV_P_ ev_stat *w) 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3234{ 4681{
3235 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
3236 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
3237 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
3238 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
3239} 4686}
3240 4687
3241static void noinline 4688ecb_noinline
4689static void
3242stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3243{ 4691{
3244 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3245 4693
3246 ev_statdata prev = w->attr; 4694 ev_statdata prev = w->attr;
… …
3277 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
3278 } 4726 }
3279} 4727}
3280 4728
3281void 4729void
3282ev_stat_start (EV_P_ ev_stat *w) 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3283{ 4731{
3284 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
3285 return; 4733 return;
3286 4734
3287 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
3288 4736
3289 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3308 4756
3309 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3310} 4758}
3311 4759
3312void 4760void
3313ev_stat_stop (EV_P_ ev_stat *w) 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3314{ 4762{
3315 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3316 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
3317 return; 4765 return;
3318 4766
3319 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
3320 4768
3321#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
… …
3334} 4782}
3335#endif 4783#endif
3336 4784
3337#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
3338void 4786void
3339ev_idle_start (EV_P_ ev_idle *w) 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3340{ 4788{
3341 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
3342 return; 4790 return;
3343 4791
3344 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
3345 4793
3346 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
3349 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
3350 4798
3351 ++idleall; 4799 ++idleall;
3352 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
3353 4801
3354 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3355 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
3356 } 4804 }
3357 4805
3358 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
3359} 4807}
3360 4808
3361void 4809void
3362ev_idle_stop (EV_P_ ev_idle *w) 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3363{ 4811{
3364 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 4814 return;
3367 4815
3368 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3369 4817
3370 { 4818 {
… …
3381} 4829}
3382#endif 4830#endif
3383 4831
3384#if EV_PREPARE_ENABLE 4832#if EV_PREPARE_ENABLE
3385void 4833void
3386ev_prepare_start (EV_P_ ev_prepare *w) 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3387{ 4835{
3388 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
3389 return; 4837 return;
3390 4838
3391 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
3392 4840
3393 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
3394 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3395 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
3396 4844
3397 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
3398} 4846}
3399 4847
3400void 4848void
3401ev_prepare_stop (EV_P_ ev_prepare *w) 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3402{ 4850{
3403 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
3404 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
3405 return; 4853 return;
3406 4854
3407 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
3408 4856
3409 { 4857 {
… …
3419} 4867}
3420#endif 4868#endif
3421 4869
3422#if EV_CHECK_ENABLE 4870#if EV_CHECK_ENABLE
3423void 4871void
3424ev_check_start (EV_P_ ev_check *w) 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3425{ 4873{
3426 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
3427 return; 4875 return;
3428 4876
3429 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
3430 4878
3431 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
3432 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3433 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
3434 4882
3435 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3436} 4884}
3437 4885
3438void 4886void
3439ev_check_stop (EV_P_ ev_check *w) 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3440{ 4888{
3441 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
3442 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
3443 return; 4891 return;
3444 4892
3445 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
3446 4894
3447 { 4895 {
… …
3456 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
3457} 4905}
3458#endif 4906#endif
3459 4907
3460#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
3461void noinline 4909ecb_noinline
4910void
3462ev_embed_sweep (EV_P_ ev_embed *w) 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3463{ 4912{
3464 ev_run (w->other, EVRUN_NOWAIT); 4913 ev_run (w->other, EVRUN_NOWAIT);
3465} 4914}
3466 4915
3467static void 4916static void
… …
3515 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
3516} 4965}
3517#endif 4966#endif
3518 4967
3519void 4968void
3520ev_embed_start (EV_P_ ev_embed *w) 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3521{ 4970{
3522 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
3523 return; 4972 return;
3524 4973
3525 { 4974 {
3526 EV_P = w->other; 4975 EV_P = w->other;
3527 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3546 4995
3547 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3548} 4997}
3549 4998
3550void 4999void
3551ev_embed_stop (EV_P_ ev_embed *w) 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3552{ 5001{
3553 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
3555 return; 5004 return;
3556 5005
3557 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
3558 5007
3559 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
… …
3566} 5015}
3567#endif 5016#endif
3568 5017
3569#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
3570void 5019void
3571ev_fork_start (EV_P_ ev_fork *w) 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3572{ 5021{
3573 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
3574 return; 5023 return;
3575 5024
3576 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3577 5026
3578 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
3579 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3580 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
3581 5030
3582 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3583} 5032}
3584 5033
3585void 5034void
3586ev_fork_stop (EV_P_ ev_fork *w) 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3587{ 5036{
3588 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
3589 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
3590 return; 5039 return;
3591 5040
3592 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
3593 5042
3594 { 5043 {
… …
3604} 5053}
3605#endif 5054#endif
3606 5055
3607#if EV_CLEANUP_ENABLE 5056#if EV_CLEANUP_ENABLE
3608void 5057void
3609ev_cleanup_start (EV_P_ ev_cleanup *w) 5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3610{ 5059{
3611 if (expect_false (ev_is_active (w))) 5060 if (ecb_expect_false (ev_is_active (w)))
3612 return; 5061 return;
3613 5062
3614 EV_FREQUENT_CHECK; 5063 EV_FREQUENT_CHECK;
3615 5064
3616 ev_start (EV_A_ (W)w, ++cleanupcnt); 5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
3617 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3618 cleanups [cleanupcnt - 1] = w; 5067 cleanups [cleanupcnt - 1] = w;
3619 5068
3620 /* cleanup watchers should never keep a refcount on the loop */ 5069 /* cleanup watchers should never keep a refcount on the loop */
3621 ev_unref (EV_A); 5070 ev_unref (EV_A);
3622 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
3623} 5072}
3624 5073
3625void 5074void
3626ev_cleanup_stop (EV_P_ ev_cleanup *w) 5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3627{ 5076{
3628 clear_pending (EV_A_ (W)w); 5077 clear_pending (EV_A_ (W)w);
3629 if (expect_false (!ev_is_active (w))) 5078 if (ecb_expect_false (!ev_is_active (w)))
3630 return; 5079 return;
3631 5080
3632 EV_FREQUENT_CHECK; 5081 EV_FREQUENT_CHECK;
3633 ev_ref (EV_A); 5082 ev_ref (EV_A);
3634 5083
… …
3645} 5094}
3646#endif 5095#endif
3647 5096
3648#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
3649void 5098void
3650ev_async_start (EV_P_ ev_async *w) 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3651{ 5100{
3652 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
3653 return; 5102 return;
3654 5103
3655 w->sent = 0; 5104 w->sent = 0;
3656 5105
3657 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
3658 5107
3659 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
3660 5109
3661 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
3662 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3663 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
3664 5113
3665 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
3666} 5115}
3667 5116
3668void 5117void
3669ev_async_stop (EV_P_ ev_async *w) 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3670{ 5119{
3671 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
3672 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
3673 return; 5122 return;
3674 5123
3675 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3676 5125
3677 { 5126 {
… …
3685 5134
3686 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
3687} 5136}
3688 5137
3689void 5138void
3690ev_async_send (EV_P_ ev_async *w) 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3691{ 5140{
3692 w->sent = 1; 5141 w->sent = 1;
3693 evpipe_write (EV_A_ &async_pending); 5142 evpipe_write (EV_A_ &async_pending);
3694} 5143}
3695#endif 5144#endif
… …
3732 5181
3733 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3734} 5183}
3735 5184
3736void 5185void
3737ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3738{ 5187{
3739 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3740
3741 if (expect_false (!once))
3742 {
3743 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3744 return;
3745 }
3746 5189
3747 once->cb = cb; 5190 once->cb = cb;
3748 once->arg = arg; 5191 once->arg = arg;
3749 5192
3750 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
3763} 5206}
3764 5207
3765/*****************************************************************************/ 5208/*****************************************************************************/
3766 5209
3767#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
5211ecb_cold
3768void 5212void
3769ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3770{ 5214{
3771 int i, j; 5215 int i, j;
3772 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
3773 5217
3774 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))
… …
3817 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5261 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3818#endif 5262#endif
3819 5263
3820#if EV_IDLE_ENABLE 5264#if EV_IDLE_ENABLE
3821 if (types & EV_IDLE) 5265 if (types & EV_IDLE)
3822 for (j = NUMPRI; i--; ) 5266 for (j = NUMPRI; j--; )
3823 for (i = idlecnt [j]; i--; ) 5267 for (i = idlecnt [j]; i--; )
3824 cb (EV_A_ EV_IDLE, idles [j][i]); 5268 cb (EV_A_ EV_IDLE, idles [j][i]);
3825#endif 5269#endif
3826 5270
3827#if EV_FORK_ENABLE 5271#if EV_FORK_ENABLE
… …
3880 5324
3881#if EV_MULTIPLICITY 5325#if EV_MULTIPLICITY
3882 #include "ev_wrap.h" 5326 #include "ev_wrap.h"
3883#endif 5327#endif
3884 5328
3885EV_CPP(})
3886

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