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Comparing libev/ev.c (file contents):
Revision 1.365 by root, Sun Oct 31 22:01:20 2010 UTC vs.
Revision 1.507 by root, Thu Jul 11 08:22:54 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
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#define EV_TS_TO_MS(a) a * 1e3 + 0.9999
550#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) 551#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) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
461 555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
462#if __GNUC__ >= 4 611 #if __GNUC__
463# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
464# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
465#else 627#else
466# define expect(expr,value) (expr) 628 #include <inttypes.h>
467# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
469# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
470# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
471#endif 645 #endif
646#endif
472 647
648/* many compilers define _GNUC_ to some versions but then only implement
649 * what their idiot authors think are the "more important" extensions,
650 * causing enormous grief in return for some better fake benchmark numbers.
651 * or so.
652 * we try to detect these and simply assume they are not gcc - if they have
653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
473#define expect_false(expr) expect ((expr) != 0, 0) 979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#define expect_true(expr) expect ((expr) != 0, 1) 980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
475#define inline_size static inline 1593#define inline_size ecb_inline
476 1594
477#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
478# define inline_speed static inline 1596# define inline_speed ecb_inline
479#else 1597#else
480# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
481#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
482 1666
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484 1668
485#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
487#else 1671#else
488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif 1673#endif
490 1674
491#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
492#define EMPTY2(a,b) /* used to suppress some warnings */
493 1676
494typedef ev_watcher *W; 1677typedef ev_watcher *W;
495typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
496typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
497 1680
… …
522# include "ev_win32.c" 1705# include "ev_win32.c"
523#endif 1706#endif
524 1707
525/*****************************************************************************/ 1708/*****************************************************************************/
526 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
527#ifdef __linux 1763#ifdef __linux
528# include <sys/utsname.h> 1764# include <sys/utsname.h>
529#endif 1765#endif
530 1766
1767ecb_noinline ecb_cold
531static unsigned int noinline 1768static unsigned int
532ev_linux_version (void) 1769ev_linux_version (void)
533{ 1770{
534#ifdef __linux 1771#ifdef __linux
535 unsigned int v = 0; 1772 unsigned int v = 0;
536 struct utsname buf; 1773 struct utsname buf;
… …
565} 1802}
566 1803
567/*****************************************************************************/ 1804/*****************************************************************************/
568 1805
569#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
570static void noinline 1807ecb_noinline ecb_cold
1808static void
571ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
572{ 1810{
573 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
574} 1812}
575#endif 1813#endif
576 1814
577static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
578 1816
1817ecb_cold
579void 1818void
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
581{ 1820{
582 syserr_cb = cb; 1821 syserr_cb = cb;
583} 1822}
584 1823
585static void noinline 1824ecb_noinline ecb_cold
1825static void
586ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
587{ 1827{
588 if (!msg) 1828 if (!msg)
589 msg = "(libev) system error"; 1829 msg = "(libev) system error";
590 1830
… …
603 abort (); 1843 abort ();
604 } 1844 }
605} 1845}
606 1846
607static void * 1847static void *
608ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
609{ 1849{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
613 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
614 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
615 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
616 */ 1855 */
617 1856
618 if (size) 1857 if (size)
619 return realloc (ptr, size); 1858 return realloc (ptr, size);
620 1859
621 free (ptr); 1860 free (ptr);
622 return 0; 1861 return 0;
623#endif
624} 1862}
625 1863
626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
627 1865
1866ecb_cold
628void 1867void
629ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
630{ 1869{
631 alloc = cb; 1870 alloc = cb;
632} 1871}
633 1872
634inline_speed void * 1873inline_speed void *
… …
661typedef struct 1900typedef struct
662{ 1901{
663 WL head; 1902 WL head;
664 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 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 */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
667 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
668#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif 1909#endif
671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
672 SOCKET handle; 1911 SOCKET handle;
… …
722 #undef VAR 1961 #undef VAR
723 }; 1962 };
724 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
725 1964
726 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
727 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
728 1967
729#else 1968#else
730 1969
731 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
732 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
733 #include "ev_vars.h" 1972 #include "ev_vars.h"
734 #undef VAR 1973 #undef VAR
735 1974
736 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
737 1976
738#endif 1977#endif
739 1978
740#if EV_FEATURE_API 1979#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# 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) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else 1983#else
745# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
751 1990
752/*****************************************************************************/ 1991/*****************************************************************************/
753 1992
754#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
755ev_tstamp 1994ev_tstamp
756ev_time (void) 1995ev_time (void) EV_NOEXCEPT
757{ 1996{
758#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
759 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
760 { 1999 {
761 struct timespec ts; 2000 struct timespec ts;
762 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
763 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
764 } 2003 }
765#endif 2004#endif
766 2005
767 struct timeval tv; 2006 struct timeval tv;
768 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
769 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
770} 2009}
771#endif 2010#endif
772 2011
773inline_size ev_tstamp 2012inline_size ev_tstamp
774get_clock (void) 2013get_clock (void)
775{ 2014{
776#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
777 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
778 { 2017 {
779 struct timespec ts; 2018 struct timespec ts;
780 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
781 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
782 } 2021 }
783#endif 2022#endif
784 2023
785 return ev_time (); 2024 return ev_time ();
786} 2025}
787 2026
788#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
789ev_tstamp 2028ev_tstamp
790ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
791{ 2030{
792 return ev_rt_now; 2031 return ev_rt_now;
793} 2032}
794#endif 2033#endif
795 2034
796void 2035void
797ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
798{ 2037{
799 if (delay > 0.) 2038 if (delay > 0.)
800 { 2039 {
801#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
802 struct timespec ts; 2041 struct timespec ts;
803 2042
804 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
805 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
806#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
807 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
808#else 2049#else
809 struct timeval tv; 2050 struct timeval tv;
810 2051
811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
812 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
830 2071
831 do 2072 do
832 ncur <<= 1; 2073 ncur <<= 1;
833 while (cnt > ncur); 2074 while (cnt > ncur);
834 2075
835 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
836 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
837 { 2078 {
838 ncur *= elem; 2079 ncur *= elem;
839 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
840 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
842 } 2083 }
843 2084
844 return ncur; 2085 return ncur;
845} 2086}
846 2087
847static noinline void * 2088ecb_noinline ecb_cold
2089static void *
848array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
849{ 2091{
850 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
851 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
852} 2094}
853 2095
2096#define array_needsize_noinit(base,offset,count)
2097
854#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
855 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
856 2100
857#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
858 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
859 { \ 2103 { \
860 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
861 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
862 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
863 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
864 } 2108 }
865 2109
866#if 0 2110#if 0
867#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
868 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
878 2122
879/*****************************************************************************/ 2123/*****************************************************************************/
880 2124
881/* dummy callback for pending events */ 2125/* dummy callback for pending events */
882static void noinline 2126ecb_noinline
2127static void
883pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
884{ 2129{
885} 2130}
886 2131
887void noinline 2132ecb_noinline
2133void
888ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
889{ 2135{
890 W w_ = (W)w; 2136 W w_ = (W)w;
891 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
892 2138
893 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
894 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
895 else 2141 else
896 { 2142 {
897 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
898 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
899 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
900 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
901 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
902} 2150}
903 2151
904inline_speed void 2152inline_speed void
905feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
906{ 2154{
907 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
908 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
909} 2157}
910 2158
911inline_size void 2159inline_size void
912feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
947inline_speed void 2195inline_speed void
948fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
949{ 2197{
950 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
951 2199
952 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
954} 2202}
955 2203
956void 2204void
957ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
958{ 2206{
959 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
960 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
961} 2209}
962 2210
… …
965inline_size void 2213inline_size void
966fd_reify (EV_P) 2214fd_reify (EV_P)
967{ 2215{
968 int i; 2216 int i;
969 2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
2242
970 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
971 { 2244 {
972 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
973 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
974 ev_io *w; 2247 ev_io *w;
975 2248
976 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
978 2251
979 anfd->reify = 0; 2252 anfd->reify = 0;
980 2253
981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
982 if (o_reify & EV__IOFDSET)
983 {
984 unsigned long arg;
985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
988 }
989#endif
990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
992 { 2255 {
993 anfd->events = 0; 2256 anfd->events = 0;
994 2257
995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1005 2268
1006 fdchangecnt = 0; 2269 fdchangecnt = 0;
1007} 2270}
1008 2271
1009/* something about the given fd changed */ 2272/* something about the given fd changed */
1010inline_size void 2273inline_size
2274void
1011fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1012{ 2276{
1013 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1014 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1015 2279
1016 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1017 { 2281 {
1018 ++fdchangecnt; 2282 ++fdchangecnt;
1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1020 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1021 } 2285 }
1022} 2286}
1023 2287
1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void 2289inline_speed ecb_cold void
1026fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1027{ 2291{
1028 ev_io *w; 2292 ev_io *w;
1029 2293
1030 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1034 } 2298 }
1035} 2299}
1036 2300
1037/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1038inline_size int 2302inline_size ecb_cold int
1039fd_valid (int fd) 2303fd_valid (int fd)
1040{ 2304{
1041#ifdef _WIN32 2305#ifdef _WIN32
1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1043#else 2307#else
1044 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1045#endif 2309#endif
1046} 2310}
1047 2311
1048/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1049static void noinline 2313ecb_noinline ecb_cold
2314static void
1050fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1051{ 2316{
1052 int fd; 2317 int fd;
1053 2318
1054 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1056 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1057 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1058} 2323}
1059 2324
1060/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1061static void noinline 2326ecb_noinline ecb_cold
2327static void
1062fd_enomem (EV_P) 2328fd_enomem (EV_P)
1063{ 2329{
1064 int fd; 2330 int fd;
1065 2331
1066 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1070 break; 2336 break;
1071 } 2337 }
1072} 2338}
1073 2339
1074/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1075static void noinline 2341ecb_noinline
2342static void
1076fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1077{ 2344{
1078 int fd; 2345 int fd;
1079 2346
1080 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1133 ev_tstamp minat; 2400 ev_tstamp minat;
1134 ANHE *minpos; 2401 ANHE *minpos;
1135 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1136 2403
1137 /* find minimum child */ 2404 /* find minimum child */
1138 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1139 { 2406 {
1140 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1141 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1142 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1144 } 2411 }
1145 else if (pos < E) 2412 else if (pos < E)
1146 { 2413 {
1147 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1148 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1149 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1150 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1151 } 2418 }
1152 else 2419 else
1153 break; 2420 break;
1154 2421
1155 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1163 2430
1164 heap [k] = he; 2431 heap [k] = he;
1165 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1166} 2433}
1167 2434
1168#else /* 4HEAP */ 2435#else /* not 4HEAP */
1169 2436
1170#define HEAP0 1 2437#define HEAP0 1
1171#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1172#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1173 2440
… …
1261 2528
1262/*****************************************************************************/ 2529/*****************************************************************************/
1263 2530
1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1265 2532
1266static void noinline 2533ecb_noinline ecb_cold
2534static void
1267evpipe_init (EV_P) 2535evpipe_init (EV_P)
1268{ 2536{
1269 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1270 { 2538 {
2539 int fds [2];
2540
1271# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1274 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1275 2546
1276 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1277 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1278 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1279 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1280 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1281 } 2608 }
1282 else 2609 else
1283# endif 2610#endif
1284 { 2611 {
1285 while (pipe (evpipe)) 2612#ifdef _WIN32
1286 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1287 2614 DWORD sent;
1288 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1289 fd_intern (evpipe [1]); 2616 buf.len = 1;
1290 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1291 } 2621 }
1292
1293 ev_io_start (EV_A_ &pipe_w);
1294 ev_unref (EV_A); /* watcher should not keep loop alive */
1295 }
1296}
1297
1298inline_size void
1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1300{
1301 if (!*flag)
1302 {
1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1305
1306 *flag = 1;
1307
1308#if EV_USE_EVENTFD
1309 if (evfd >= 0)
1310 {
1311 uint64_t counter = 1;
1312 write (evfd, &counter, sizeof (uint64_t));
1313 }
1314 else
1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1321 write (evpipe [1], &dummy, 1);
1322 2622
1323 errno = old_errno; 2623 errno = old_errno;
1324 } 2624 }
1325} 2625}
1326 2626
… …
1329static void 2629static void
1330pipecb (EV_P_ ev_io *iow, int revents) 2630pipecb (EV_P_ ev_io *iow, int revents)
1331{ 2631{
1332 int i; 2632 int i;
1333 2633
2634 if (revents & EV_READ)
2635 {
1334#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1335 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1336 { 2638 {
1337 uint64_t counter; 2639 uint64_t counter;
1338 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1339 } 2641 }
1340 else 2642 else
1341#endif 2643#endif
1342 { 2644 {
1343 char dummy; 2645 char dummy[4];
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1345 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
1346 } 2657 }
1347 2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
1348 if (sig_pending) 2664 if (sig_pending)
1349 { 2665 {
1350 sig_pending = 0; 2666 sig_pending = 0;
1351 2667
2668 ECB_MEMORY_FENCE;
2669
1352 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1353 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1354 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1355 } 2673 }
2674#endif
1356 2675
1357#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1358 if (async_pending) 2677 if (async_pending)
1359 { 2678 {
1360 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1361 2682
1362 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1363 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1364 { 2685 {
1365 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1366 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1367 } 2689 }
1368 } 2690 }
1369#endif 2691#endif
1370} 2692}
1371 2693
1372/*****************************************************************************/ 2694/*****************************************************************************/
1373 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1374static void 2712static void
1375ev_sighandler (int signum) 2713ev_sighandler (int signum)
1376{ 2714{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379#endif
1380
1381#ifdef _WIN32 2715#ifdef _WIN32
1382 signal (signum, ev_sighandler); 2716 signal (signum, ev_sighandler);
1383#endif 2717#endif
1384 2718
1385 signals [signum - 1].pending = 1; 2719 ev_feed_signal (signum);
1386 evpipe_write (EV_A_ &sig_pending);
1387} 2720}
1388 2721
1389void noinline 2722ecb_noinline
2723void
1390ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1391{ 2725{
1392 WL w; 2726 WL w;
1393 2727
1394 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1395 return; 2729 return;
1396 2730
1397 --signum; 2731 --signum;
1398 2732
1399#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1400 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1401 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1402 2736
1403 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1404 return; 2738 return;
1405#endif 2739#endif
1406 2740
1407 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1408 2743
1409 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1410 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1411} 2746}
1412 2747
… …
1503# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1504#endif 2839#endif
1505#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1506# include "ev_epoll.c" 2841# include "ev_epoll.c"
1507#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1508#if EV_USE_POLL 2849#if EV_USE_POLL
1509# include "ev_poll.c" 2850# include "ev_poll.c"
1510#endif 2851#endif
1511#if EV_USE_SELECT 2852#if EV_USE_SELECT
1512# include "ev_select.c" 2853# include "ev_select.c"
1513#endif 2854#endif
1514 2855
1515int 2856ecb_cold int
1516ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1517{ 2858{
1518 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1519} 2860}
1520 2861
1521int 2862ecb_cold int
1522ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1523{ 2864{
1524 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1525} 2866}
1526 2867
1527/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1528int inline_size 2869inline_size ecb_cold int
1529enable_secure (void) 2870enable_secure (void)
1530{ 2871{
1531#ifdef _WIN32 2872#ifdef _WIN32
1532 return 0; 2873 return 0;
1533#else 2874#else
1534 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1535 || getgid () != getegid (); 2876 || getgid () != getegid ();
1536#endif 2877#endif
1537} 2878}
1538 2879
2880ecb_cold
1539unsigned int 2881unsigned int
1540ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1541{ 2883{
1542 unsigned int flags = 0; 2884 unsigned int flags = 0;
1543 2885
1544 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1545 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1546 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1547 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1548 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1549 2893
1550 return flags; 2894 return flags;
1551} 2895}
1552 2896
2897ecb_cold
1553unsigned int 2898unsigned int
1554ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1555{ 2900{
1556 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1557 2902
1558#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1559 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1567#endif 2912#endif
1568#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
1569 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1570#endif 2915#endif
1571 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
1572 return flags; 2926 return flags;
1573} 2927}
1574 2928
2929ecb_cold
1575unsigned int 2930unsigned int
1576ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1577{ 2932{
1578 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1579 2934
1580 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1581 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1582 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
1583 2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
2945
1584 return flags; 2946 return flags;
1585} 2947}
1586 2948
1587unsigned int 2949unsigned int
1588ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1589{ 2951{
1590 return backend; 2952 return backend;
1591} 2953}
1592 2954
1593#if EV_FEATURE_API 2955#if EV_FEATURE_API
1594unsigned int 2956unsigned int
1595ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1596{ 2958{
1597 return loop_count; 2959 return loop_count;
1598} 2960}
1599 2961
1600unsigned int 2962unsigned int
1601ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1602{ 2964{
1603 return loop_depth; 2965 return loop_depth;
1604} 2966}
1605 2967
1606void 2968void
1607ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1608{ 2970{
1609 io_blocktime = interval; 2971 io_blocktime = interval;
1610} 2972}
1611 2973
1612void 2974void
1613ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1614{ 2976{
1615 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1616} 2978}
1617 2979
1618void 2980void
1619ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1620{ 2982{
1621 userdata = data; 2983 userdata = data;
1622} 2984}
1623 2985
1624void * 2986void *
1625ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1626{ 2988{
1627 return userdata; 2989 return userdata;
1628} 2990}
1629 2991
2992void
1630void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1631{ 2994{
1632 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1633} 2996}
1634 2997
2998void
1635void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1636{ 3000{
1637 release_cb = release; 3001 release_cb = release;
1638 acquire_cb = acquire; 3002 acquire_cb = acquire;
1639} 3003}
1640#endif 3004#endif
1641 3005
1642/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1643static void noinline 3007ecb_noinline ecb_cold
3008static void
1644loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1645{ 3010{
1646 if (!backend) 3011 if (!backend)
1647 { 3012 {
3013 origflags = flags;
3014
1648#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1649 if (!have_realtime) 3016 if (!have_realtime)
1650 { 3017 {
1651 struct timespec ts; 3018 struct timespec ts;
1652 3019
… …
1674 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1675 && !enable_secure () 3042 && !enable_secure ()
1676 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1677 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1678 3045
1679 ev_rt_now = ev_time (); 3046 ev_rt_now = ev_time ();
1680 mn_now = get_clock (); 3047 mn_now = get_clock ();
1681 now_floor = mn_now; 3048 now_floor = mn_now;
1682 rtmn_diff = ev_rt_now - mn_now; 3049 rtmn_diff = ev_rt_now - mn_now;
1683#if EV_FEATURE_API 3050#if EV_FEATURE_API
1684 invoke_cb = ev_invoke_pending; 3051 invoke_cb = ev_invoke_pending;
1685#endif 3052#endif
1686 3053
1687 io_blocktime = 0.; 3054 io_blocktime = 0.;
1688 timeout_blocktime = 0.; 3055 timeout_blocktime = 0.;
1689 backend = 0; 3056 backend = 0;
1690 backend_fd = -1; 3057 backend_fd = -1;
1691 sig_pending = 0; 3058 sig_pending = 0;
1692#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1693 async_pending = 0; 3060 async_pending = 0;
1694#endif 3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1695#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1696 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1697#endif 3068#endif
1698#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1699 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1700#endif 3071#endif
1701 3072
1702 if (!(flags & 0x0000ffffU)) 3073 if (!(flags & EVBACKEND_MASK))
1703 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1704 3075
1705#if EV_USE_IOCP 3076#if EV_USE_IOCP
1706 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1707#endif 3078#endif
1708#if EV_USE_PORT 3079#if EV_USE_PORT
1709 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1710#endif 3081#endif
1711#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1712 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1713#endif 3090#endif
1714#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1715 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1716#endif 3093#endif
1717#if EV_USE_POLL 3094#if EV_USE_POLL
1718 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1719#endif 3096#endif
1720#if EV_USE_SELECT 3097#if EV_USE_SELECT
1721 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1722#endif 3099#endif
1723 3100
1724 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1725 3102
1726#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1729#endif 3106#endif
1730 } 3107 }
1731} 3108}
1732 3109
1733/* free up a loop structure */ 3110/* free up a loop structure */
3111ecb_cold
1734void 3112void
1735ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1736{ 3114{
1737 int i; 3115 int i;
1738 3116
… …
1742 return; 3120 return;
1743#endif 3121#endif
1744 3122
1745#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
1746 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
1747 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
1748 { 3126 {
1749 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1750 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
1751 } 3129 }
1752#endif 3130#endif
1753 3131
1754#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
1755 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1756 { 3134 {
1757 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
1758 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
1759 } 3137 }
1760#endif 3138#endif
… …
1762 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1763 { 3141 {
1764 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1765 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1766 3144
1767#if EV_USE_EVENTFD
1768 if (evfd >= 0)
1769 close (evfd);
1770#endif
1771
1772 if (evpipe [0] >= 0)
1773 {
1774 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1775 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1776 }
1777 } 3147 }
1778 3148
1779#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1780 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1781 close (sigfd); 3151 close (sigfd);
… …
1788 3158
1789 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1790 close (backend_fd); 3160 close (backend_fd);
1791 3161
1792#if EV_USE_IOCP 3162#if EV_USE_IOCP
1793 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1794#endif 3164#endif
1795#if EV_USE_PORT 3165#if EV_USE_PORT
1796 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1797#endif 3167#endif
1798#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1799 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1800#endif 3176#endif
1801#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1802 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1803#endif 3179#endif
1804#if EV_USE_POLL 3180#if EV_USE_POLL
1805 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1806#endif 3182#endif
1807#if EV_USE_SELECT 3183#if EV_USE_SELECT
1808 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1809#endif 3185#endif
1810 3186
1811 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1812 { 3188 {
1813 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
1855 3231
1856inline_size void 3232inline_size void
1857loop_fork (EV_P) 3233loop_fork (EV_P)
1858{ 3234{
1859#if EV_USE_PORT 3235#if EV_USE_PORT
1860 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1861#endif 3237#endif
1862#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1863 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1864#endif 3246#endif
1865#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1866 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1867#endif 3249#endif
1868#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1869 infy_fork (EV_A); 3251 infy_fork (EV_A);
1870#endif 3252#endif
1871 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1872 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
1873 { 3256 {
1874 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1875 /* while we modify the fd vars */
1876 sig_pending = 1;
1877#if EV_ASYNC_ENABLE
1878 async_pending = 1;
1879#endif
1880 3258
1881 ev_ref (EV_A); 3259 ev_ref (EV_A);
1882 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
1883 3261
1884#if EV_USE_EVENTFD
1885 if (evfd >= 0)
1886 close (evfd);
1887#endif
1888
1889 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1890 {
1891 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1892 EV_WIN32_CLOSE_FD (evpipe [1]);
1893 }
1894 3264
1895#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1896 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1897 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1898 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1899#endif
1900 } 3268 }
3269#endif
1901 3270
1902 postfork = 0; 3271 postfork = 0;
1903} 3272}
1904 3273
1905#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1906 3275
3276ecb_cold
1907struct ev_loop * 3277struct ev_loop *
1908ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1909{ 3279{
1910 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1911 3281
1912 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1913 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
1920} 3290}
1921 3291
1922#endif /* multiplicity */ 3292#endif /* multiplicity */
1923 3293
1924#if EV_VERIFY 3294#if EV_VERIFY
1925static void noinline 3295ecb_noinline ecb_cold
3296static void
1926verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1927{ 3298{
1928 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1929 3300
1930 if (w->pending) 3301 if (w->pending)
1931 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1932} 3303}
1933 3304
1934static void noinline 3305ecb_noinline ecb_cold
3306static void
1935verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1936{ 3308{
1937 int i; 3309 int i;
1938 3310
1939 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1944 3316
1945 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1946 } 3318 }
1947} 3319}
1948 3320
1949static void noinline 3321ecb_noinline ecb_cold
3322static void
1950array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1951{ 3324{
1952 while (cnt--) 3325 while (cnt--)
1953 { 3326 {
1954 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1956 } 3329 }
1957} 3330}
1958#endif 3331#endif
1959 3332
1960#if EV_FEATURE_API 3333#if EV_FEATURE_API
1961void 3334void ecb_cold
1962ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
1963{ 3336{
1964#if EV_VERIFY 3337#if EV_VERIFY
1965 int i; 3338 int i;
1966 WL w; 3339 WL w, w2;
1967 3340
1968 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1969 3342
1970 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1971 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1972 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1973 3346
1974 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1975 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1976 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1977 { 3353 {
1978 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1979 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1980 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1981 } 3364 }
3365 }
1982 3366
1983 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1984 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1985 3369
1986#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2032#endif 3416#endif
2033} 3417}
2034#endif 3418#endif
2035 3419
2036#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2037struct ev_loop * 3422struct ev_loop *
2038#else 3423#else
2039int 3424int
2040#endif 3425#endif
2041ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2042{ 3427{
2043 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2044 { 3429 {
2045#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2046 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2065 3450
2066 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2067} 3452}
2068 3453
2069void 3454void
2070ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2071{ 3456{
2072 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2073} 3458}
2074 3459
2075/*****************************************************************************/ 3460/*****************************************************************************/
2076 3461
2077void 3462void
… …
2079{ 3464{
2080 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2081} 3466}
2082 3467
2083unsigned int 3468unsigned int
2084ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2085{ 3470{
2086 int pri; 3471 int pri;
2087 unsigned int count = 0; 3472 unsigned int count = 0;
2088 3473
2089 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2090 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2091 3476
2092 return count; 3477 return count;
2093} 3478}
2094 3479
2095void noinline 3480ecb_noinline
3481void
2096ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2097{ 3483{
2098 int pri; 3484 pendingpri = NUMPRI;
2099 3485
2100 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2101 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2102 { 3492 {
2103 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2104 3494
2105 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2106 /* ^ this is no longer true, as pending_w could be here */
2107
2108 p->w->pending = 0; 3495 p->w->pending = 0;
2109 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2110 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2111 } 3498 }
3499 }
3500 while (pendingpri);
2112} 3501}
2113 3502
2114#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2115/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2116/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2117inline_size void 3506inline_size void
2118idle_reify (EV_P) 3507idle_reify (EV_P)
2119{ 3508{
2120 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2121 { 3510 {
2122 int pri; 3511 int pri;
2123 3512
2124 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2125 { 3514 {
… …
2173 feed_reverse_done (EV_A_ EV_TIMER); 3562 feed_reverse_done (EV_A_ EV_TIMER);
2174 } 3563 }
2175} 3564}
2176 3565
2177#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
2178/* make periodics pending */ 3593/* make periodics pending */
2179inline_size void 3594inline_size void
2180periodics_reify (EV_P) 3595periodics_reify (EV_P)
2181{ 3596{
2182 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2183 3598
2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2185 { 3600 {
2186 int feed_count = 0;
2187
2188 do 3601 do
2189 { 3602 {
2190 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2191 3604
2192 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2201 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
2202 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
2203 } 3616 }
2204 else if (w->interval) 3617 else if (w->interval)
2205 { 3618 {
2206 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
2207 /* if next trigger time is not sufficiently in the future, put it there */
2208 /* this might happen because of floating point inexactness */
2209 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2210 {
2211 ev_at (w) += w->interval;
2212
2213 /* if interval is unreasonably low we might still have a time in the past */
2214 /* so correct this. this will make the periodic very inexact, but the user */
2215 /* has effectively asked to get triggered more often than possible */
2216 if (ev_at (w) < ev_rt_now)
2217 ev_at (w) = ev_rt_now;
2218 }
2219
2220 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
2221 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
2222 } 3622 }
2223 else 3623 else
2224 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2232 } 3632 }
2233} 3633}
2234 3634
2235/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2236/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2237static void noinline 3637ecb_noinline ecb_cold
3638static void
2238periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2239{ 3640{
2240 int i; 3641 int i;
2241 3642
2242 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2245 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2246 3647
2247 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
2248 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2249 else if (w->interval) 3650 else if (w->interval)
2250 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
2251 3652
2252 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
2253 } 3654 }
2254 3655
2255 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2256} 3657}
2257#endif 3658#endif
2258 3659
2259/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2260static void noinline 3661ecb_noinline ecb_cold
3662static void
2261timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2262{ 3664{
2263 int i; 3665 int i;
2264 3666
2265 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2274/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2275inline_speed void 3677inline_speed void
2276time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2277{ 3679{
2278#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2279 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2280 { 3682 {
2281 int i; 3683 int i;
2282 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2283 3685
2284 mn_now = get_clock (); 3686 mn_now = get_clock ();
2285 3687
2286 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2287 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2288 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2289 { 3691 {
2290 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2291 return; 3693 return;
2292 } 3694 }
2293 3695
… …
2302 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
2303 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
2304 */ 3706 */
2305 for (i = 4; --i; ) 3707 for (i = 4; --i; )
2306 { 3708 {
3709 ev_tstamp diff;
2307 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2308 3711
3712 diff = odiff - rtmn_diff;
3713
2309 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2310 return; /* all is well */ 3715 return; /* all is well */
2311 3716
2312 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2313 mn_now = get_clock (); 3718 mn_now = get_clock ();
2314 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2323 else 3728 else
2324#endif 3729#endif
2325 { 3730 {
2326 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2327 3732
2328 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2329 { 3734 {
2330 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2331 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2332#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2333 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2336 3741
2337 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2338 } 3743 }
2339} 3744}
2340 3745
2341void 3746int
2342ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2343{ 3748{
2344#if EV_FEATURE_API 3749#if EV_FEATURE_API
2345 ++loop_depth; 3750 ++loop_depth;
2346#endif 3751#endif
… …
2356#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2357 ev_verify (EV_A); 3762 ev_verify (EV_A);
2358#endif 3763#endif
2359 3764
2360#ifndef _WIN32 3765#ifndef _WIN32
2361 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2362 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2363 { 3768 {
2364 curpid = getpid (); 3769 curpid = getpid ();
2365 postfork = 1; 3770 postfork = 1;
2366 } 3771 }
2367#endif 3772#endif
2368 3773
2369#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2370 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2371 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2372 if (forkcnt) 3777 if (forkcnt)
2373 { 3778 {
2374 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2375 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2376 } 3781 }
2377#endif 3782#endif
2378 3783
2379#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2380 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2381 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2382 { 3787 {
2383 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2384 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2385 } 3790 }
2386#endif 3791#endif
2387 3792
2388 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2389 break; 3794 break;
2390 3795
2391 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2392 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2393 loop_fork (EV_A); 3798 loop_fork (EV_A);
2394 3799
2395 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2396 fd_reify (EV_A); 3801 fd_reify (EV_A);
2397 3802
… …
2404 ev_tstamp prev_mn_now = mn_now; 3809 ev_tstamp prev_mn_now = mn_now;
2405 3810
2406 /* update time to cancel out callback processing overhead */ 3811 /* update time to cancel out callback processing overhead */
2407 time_update (EV_A_ 1e100); 3812 time_update (EV_A_ 1e100);
2408 3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2409 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2410 { 3820 {
2411 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2412 3822
2413 if (timercnt) 3823 if (timercnt)
2414 { 3824 {
2415 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2416 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2417 } 3827 }
2418 3828
2419#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2420 if (periodiccnt) 3830 if (periodiccnt)
2421 { 3831 {
2422 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2423 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2424 } 3834 }
2425#endif 3835#endif
2426 3836
2427 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2428 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2429 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2430 3840
3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
3845
2431 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2432 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2433 { 3848 {
2434 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2435 3850
2436 if (sleeptime > waittime - backend_fudge) 3851 if (sleeptime > waittime - backend_mintime)
2437 sleeptime = waittime - backend_fudge; 3852 sleeptime = waittime - backend_mintime;
2438 3853
2439 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2440 { 3855 {
2441 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2442 waittime -= sleeptime; 3857 waittime -= sleeptime;
2443 } 3858 }
2444 } 3859 }
… …
2449#endif 3864#endif
2450 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2451 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2452 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2453 3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
3877
2454 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2455 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2456 } 3880 }
2457 3881
2458 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
2466 idle_reify (EV_A); 3890 idle_reify (EV_A);
2467#endif 3891#endif
2468 3892
2469#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
2470 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2471 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2472 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2473#endif 3897#endif
2474 3898
2475 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2476 } 3900 }
2477 while (expect_true ( 3901 while (ecb_expect_true (
2478 activecnt 3902 activecnt
2479 && !loop_done 3903 && !loop_done
2480 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2481 )); 3905 ));
2482 3906
… …
2484 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2485 3909
2486#if EV_FEATURE_API 3910#if EV_FEATURE_API
2487 --loop_depth; 3911 --loop_depth;
2488#endif 3912#endif
2489}
2490 3913
3914 return activecnt;
3915}
3916
2491void 3917void
2492ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2493{ 3919{
2494 loop_done = how; 3920 loop_done = how;
2495} 3921}
2496 3922
2497void 3923void
2498ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2499{ 3925{
2500 ++activecnt; 3926 ++activecnt;
2501} 3927}
2502 3928
2503void 3929void
2504ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2505{ 3931{
2506 --activecnt; 3932 --activecnt;
2507} 3933}
2508 3934
2509void 3935void
2510ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2511{ 3937{
2512 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2513} 3939}
2514 3940
2515void 3941void
2516ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2517{ 3943{
2518 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2519} 3945}
2520 3946
2521void 3947void
2522ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2523{ 3949{
2524 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2525 3951
2526 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2527 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2544inline_size void 3970inline_size void
2545wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2546{ 3972{
2547 while (*head) 3973 while (*head)
2548 { 3974 {
2549 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2550 { 3976 {
2551 *head = elem->next; 3977 *head = elem->next;
2552 break; 3978 break;
2553 } 3979 }
2554 3980
… …
2566 w->pending = 0; 3992 w->pending = 0;
2567 } 3993 }
2568} 3994}
2569 3995
2570int 3996int
2571ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2572{ 3998{
2573 W w_ = (W)w; 3999 W w_ = (W)w;
2574 int pending = w_->pending; 4000 int pending = w_->pending;
2575 4001
2576 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2577 { 4003 {
2578 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2579 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2580 w_->pending = 0; 4006 w_->pending = 0;
2581 return p->events; 4007 return p->events;
… …
2608 w->active = 0; 4034 w->active = 0;
2609} 4035}
2610 4036
2611/*****************************************************************************/ 4037/*****************************************************************************/
2612 4038
2613void noinline 4039ecb_noinline
4040void
2614ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2615{ 4042{
2616 int fd = w->fd; 4043 int fd = w->fd;
2617 4044
2618 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2619 return; 4046 return;
2620 4047
2621 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2622 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2623 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2624 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2625 4055
2626 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2627 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2628 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2629 4062
2630 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2631 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2632 4065
2633 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2634} 4067}
2635 4068
2636void noinline 4069ecb_noinline
4070void
2637ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2638{ 4072{
2639 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2641 return; 4075 return;
2642 4076
2643 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2644 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2645 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2646 4083
2647 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2648 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2649 4086
2650 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2651 4088
2652 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2653} 4090}
2654 4091
2655void noinline 4092ecb_noinline
4093void
2656ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2657{ 4095{
2658 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2659 return; 4097 return;
2660 4098
2661 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2662 4100
2663 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2664 4102
2665 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2666 4104
2667 ++timercnt; 4105 ++timercnt;
2668 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2669 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2670 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2671 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2672 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2673 4111
2674 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2675 4113
2676 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2677} 4115}
2678 4116
2679void noinline 4117ecb_noinline
4118void
2680ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2681{ 4120{
2682 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2683 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2684 return; 4123 return;
2685 4124
2686 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2687 4126
2688 { 4127 {
… …
2690 4129
2691 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2692 4131
2693 --timercnt; 4132 --timercnt;
2694 4133
2695 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2696 { 4135 {
2697 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2698 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2699 } 4138 }
2700 } 4139 }
… …
2704 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2705 4144
2706 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2707} 4146}
2708 4147
2709void noinline 4148ecb_noinline
4149void
2710ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2711{ 4151{
2712 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2713 4155
2714 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2715 { 4157 {
2716 if (w->repeat) 4158 if (w->repeat)
2717 { 4159 {
… …
2730 4172
2731 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2732} 4174}
2733 4175
2734ev_tstamp 4176ev_tstamp
2735ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2736{ 4178{
2737 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2738} 4180}
2739 4181
2740#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2741void noinline 4183ecb_noinline
4184void
2742ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2743{ 4186{
2744 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2745 return; 4188 return;
2746 4189
2747 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2748 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2749 else if (w->interval) 4192 else if (w->interval)
2750 { 4193 {
2751 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2752 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2753 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2754 } 4196 }
2755 else 4197 else
2756 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2757 4199
2758 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2759 4201
2760 ++periodiccnt; 4202 ++periodiccnt;
2761 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2762 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2763 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2764 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2765 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2766 4208
2767 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2768 4210
2769 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2770} 4212}
2771 4213
2772void noinline 4214ecb_noinline
4215void
2773ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2774{ 4217{
2775 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2776 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2777 return; 4220 return;
2778 4221
2779 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2780 4223
2781 { 4224 {
… …
2783 4226
2784 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2785 4228
2786 --periodiccnt; 4229 --periodiccnt;
2787 4230
2788 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2789 { 4232 {
2790 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2791 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2792 } 4235 }
2793 } 4236 }
… …
2795 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2796 4239
2797 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2798} 4241}
2799 4242
2800void noinline 4243ecb_noinline
4244void
2801ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2802{ 4246{
2803 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2804 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2805 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2806} 4250}
… …
2810# define SA_RESTART 0 4254# define SA_RESTART 0
2811#endif 4255#endif
2812 4256
2813#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
2814 4258
2815void noinline 4259ecb_noinline
4260void
2816ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2817{ 4262{
2818 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
2819 return; 4264 return;
2820 4265
2821 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2822 4267
2823#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2824 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
2825 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2826 4271
2827 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
2828#endif 4274#endif
2829 4275
2830 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2831 4277
2832#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
2879 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2880 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2881 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2882 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
2883 4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
2884 sigemptyset (&sa.sa_mask); 4332 sigemptyset (&sa.sa_mask);
2885 sigaddset (&sa.sa_mask, w->signum); 4333 sigaddset (&sa.sa_mask, w->signum);
2886 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2887#endif 4336#endif
2888 } 4337 }
2889 4338
2890 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2891} 4340}
2892 4341
2893void noinline 4342ecb_noinline
4343void
2894ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2895{ 4345{
2896 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2897 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2898 return; 4348 return;
2899 4349
2900 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2901 4351
2902 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2930#endif 4380#endif
2931 4381
2932#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
2933 4383
2934void 4384void
2935ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2936{ 4386{
2937#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2938 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2939#endif 4389#endif
2940 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2941 return; 4391 return;
2942 4392
2943 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2944 4394
2945 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
2947 4397
2948 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2949} 4399}
2950 4400
2951void 4401void
2952ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2953{ 4403{
2954 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2955 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2956 return; 4406 return;
2957 4407
2958 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2959 4409
2960 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2974 4424
2975#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2976#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2977#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2978 4428
2979static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2980 4430
2981#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2982 4432
2983/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2984# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2985 4435
2986static void noinline 4436ecb_noinline
4437static void
2987infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2988{ 4439{
2989 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); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2990 4444
2991 if (w->wd >= 0) 4445 if (w->wd >= 0)
2992 { 4446 {
2993 struct statfs sfs; 4447 struct statfs sfs;
2994 4448
… …
2998 4452
2999 if (!fs_2625) 4453 if (!fs_2625)
3000 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3001 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3002 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3003 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
3004 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3005 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3006 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3007 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3008 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3009 else 4469 else
3010 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3011 } 4471 }
… …
3032 if (!pend || pend == path) 4492 if (!pend || pend == path)
3033 break; 4493 break;
3034 4494
3035 *pend = 0; 4495 *pend = 0;
3036 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
3037 } 4497 }
3038 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3039 } 4499 }
3040 } 4500 }
3041 4501
3042 if (w->wd >= 0) 4502 if (w->wd >= 0)
… …
3046 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3047 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3048 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3049} 4509}
3050 4510
3051static void noinline 4511ecb_noinline
4512static void
3052infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3053{ 4514{
3054 int slot; 4515 int slot;
3055 int wd = w->wd; 4516 int wd = w->wd;
3056 4517
… …
3063 4524
3064 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3065 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3066} 4527}
3067 4528
3068static void noinline 4529ecb_noinline
4530static void
3069infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3070{ 4532{
3071 if (slot < 0) 4533 if (slot < 0)
3072 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3073 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3109 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3110 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3111 } 4573 }
3112} 4574}
3113 4575
3114inline_size void 4576inline_size ecb_cold
4577void
3115ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3116{ 4579{
3117 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3118 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3119 */ 4582 */
… …
3124} 4587}
3125 4588
3126inline_size int 4589inline_size int
3127infy_newfd (void) 4590infy_newfd (void)
3128{ 4591{
3129#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3130 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3131 if (fd >= 0) 4594 if (fd >= 0)
3132 return fd; 4595 return fd;
3133#endif 4596#endif
3134 return inotify_init (); 4597 return inotify_init ();
… …
3209#else 4672#else
3210# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3211#endif 4674#endif
3212 4675
3213void 4676void
3214ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3215{ 4678{
3216 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3217 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3218 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3219 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3220} 4683}
3221 4684
3222static void noinline 4685ecb_noinline
4686static void
3223stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3224{ 4688{
3225 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3226 4690
3227 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3258 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3259 } 4723 }
3260} 4724}
3261 4725
3262void 4726void
3263ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3264{ 4728{
3265 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3266 return; 4730 return;
3267 4731
3268 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3269 4733
3270 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3289 4753
3290 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3291} 4755}
3292 4756
3293void 4757void
3294ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3295{ 4759{
3296 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3297 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3298 return; 4762 return;
3299 4763
3300 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3301 4765
3302#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3315} 4779}
3316#endif 4780#endif
3317 4781
3318#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3319void 4783void
3320ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3321{ 4785{
3322 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3323 return; 4787 return;
3324 4788
3325 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3326 4790
3327 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3330 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3331 4795
3332 ++idleall; 4796 ++idleall;
3333 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3334 4798
3335 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3336 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3337 } 4801 }
3338 4802
3339 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3340} 4804}
3341 4805
3342void 4806void
3343ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3344{ 4808{
3345 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3346 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3347 return; 4811 return;
3348 4812
3349 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3350 4814
3351 { 4815 {
… …
3362} 4826}
3363#endif 4827#endif
3364 4828
3365#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3366void 4830void
3367ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3368{ 4832{
3369 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3370 return; 4834 return;
3371 4835
3372 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3373 4837
3374 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3375 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3376 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3377 4841
3378 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3379} 4843}
3380 4844
3381void 4845void
3382ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3383{ 4847{
3384 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3385 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3386 return; 4850 return;
3387 4851
3388 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3389 4853
3390 { 4854 {
… …
3400} 4864}
3401#endif 4865#endif
3402 4866
3403#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3404void 4868void
3405ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3406{ 4870{
3407 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3408 return; 4872 return;
3409 4873
3410 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3411 4875
3412 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3413 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3414 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3415 4879
3416 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3417} 4881}
3418 4882
3419void 4883void
3420ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3421{ 4885{
3422 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3423 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3424 return; 4888 return;
3425 4889
3426 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3427 4891
3428 { 4892 {
… …
3437 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3438} 4902}
3439#endif 4903#endif
3440 4904
3441#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3442void noinline 4906ecb_noinline
4907void
3443ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3444{ 4909{
3445 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
3446} 4911}
3447 4912
3448static void 4913static void
… …
3496 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3497} 4962}
3498#endif 4963#endif
3499 4964
3500void 4965void
3501ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3502{ 4967{
3503 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3504 return; 4969 return;
3505 4970
3506 { 4971 {
3507 EV_P = w->other; 4972 EV_P = w->other;
3508 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3527 4992
3528 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3529} 4994}
3530 4995
3531void 4996void
3532ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3533{ 4998{
3534 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3535 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3536 return; 5001 return;
3537 5002
3538 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3539 5004
3540 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3547} 5012}
3548#endif 5013#endif
3549 5014
3550#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3551void 5016void
3552ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3553{ 5018{
3554 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3555 return; 5020 return;
3556 5021
3557 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3558 5023
3559 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3560 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3561 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3562 5027
3563 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3564} 5029}
3565 5030
3566void 5031void
3567ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3568{ 5033{
3569 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3571 return; 5036 return;
3572 5037
3573 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3574 5039
3575 { 5040 {
… …
3585} 5050}
3586#endif 5051#endif
3587 5052
3588#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
3589void 5054void
3590ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3591{ 5056{
3592 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
3593 return; 5058 return;
3594 5059
3595 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3596 5061
3597 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
3598 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3599 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
3600 5065
3601 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
3602 ev_unref (EV_A); 5067 ev_unref (EV_A);
3603 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
3604} 5069}
3605 5070
3606void 5071void
3607ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3608{ 5073{
3609 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
3610 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
3611 return; 5076 return;
3612 5077
3613 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
3614 ev_ref (EV_A); 5079 ev_ref (EV_A);
3615 5080
… …
3626} 5091}
3627#endif 5092#endif
3628 5093
3629#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3630void 5095void
3631ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3632{ 5097{
3633 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3634 return; 5099 return;
3635 5100
3636 w->sent = 0; 5101 w->sent = 0;
3637 5102
3638 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3639 5104
3640 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3641 5106
3642 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3643 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3644 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3645 5110
3646 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3647} 5112}
3648 5113
3649void 5114void
3650ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3651{ 5116{
3652 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3653 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3654 return; 5119 return;
3655 5120
3656 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3657 5122
3658 { 5123 {
… …
3666 5131
3667 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3668} 5133}
3669 5134
3670void 5135void
3671ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3672{ 5137{
3673 w->sent = 1; 5138 w->sent = 1;
3674 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3675} 5140}
3676#endif 5141#endif
… …
3713 5178
3714 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3715} 5180}
3716 5181
3717void 5182void
3718ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3719{ 5184{
3720 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3721
3722 if (expect_false (!once))
3723 {
3724 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3725 return;
3726 }
3727 5186
3728 once->cb = cb; 5187 once->cb = cb;
3729 once->arg = arg; 5188 once->arg = arg;
3730 5189
3731 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3744} 5203}
3745 5204
3746/*****************************************************************************/ 5205/*****************************************************************************/
3747 5206
3748#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
5208ecb_cold
3749void 5209void
3750ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3751{ 5211{
3752 int i, j; 5212 int i, j;
3753 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3754 5214
3755 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3798 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3799#endif 5259#endif
3800 5260
3801#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3802 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3803 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3804 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3805 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3806#endif 5266#endif
3807 5267
3808#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3861 5321
3862#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3863 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3864#endif 5324#endif
3865 5325
3866EV_CPP(})
3867

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