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Comparing libev/ev.c (file contents):
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
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
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
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
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_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
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
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
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
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
302#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 348# else
306# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
347 390
348#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 393#endif
351 394
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
352/* 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, */
353/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 414# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
360# else 420# else
361# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
363# endif 423# endif
364#endif 424#endif
365 425
366/* 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 */
367 427
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
377#endif 431#endif
378 432
… …
386# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
387#endif 441#endif
388 442
389#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
392# 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
393# endif 472# endif
394#endif 473#endif
395 474
396#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
397# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
399/* 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 */
400# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
403# endif 482# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 483#endif
409 484
410#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
411/* 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 */
412# include <stdint.h> 487# include <stdint.h>
… …
443 uint32_t ssi_signo; 518 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
445}; 520};
446#endif 521#endif
447 522
448/**/ 523/*****************************************************************************/
449 524
450#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 527#else
453# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
459 */ 534 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 537
463#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) */
464#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) */
465 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
468 558
469/* the following are taken from libecb */ 559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
614 #if __GNUC__
615 typedef signed long long int64_t;
616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
630#else
631 #include <inttypes.h>
632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
633 #define ECB_PTRSIZE 8
634 #else
635 #define ECB_PTRSIZE 4
636 #endif
637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
648 #endif
649#endif
471 650
472/* many compilers define _GNUC_ to some versions but then only implement 651/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 652 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 653 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 654 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 655 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place. 656 * an issue with that they should have done it right in the first place.
478 */ 657 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 659 #define ECB_GCC_VERSION(major,minor) 0
482 #else 660#else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
484 #endif 780 #endif
485#endif 781#endif
486 782
487#if __cplusplus 783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
488 #define ecb_inline static inline 869 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 870#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 871 #define ecb_inline static __inline__
491#elif ECB_C99 872#elif ECB_C99
492 #define ecb_inline static inline 873 #define ecb_inline static inline
493#else 874#else
494 #define ecb_inline static 875 #define ecb_inline static
495#endif 876#endif
496 877
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
508 #endif
509#endif
510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528
529#ifndef ECB_MEMORY_FENCE
530 #include <pthread.h>
531
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537
538#if ECB_GCC_VERSION(3,1) 878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
539 #define ecb_attribute(attrlist) __attribute__(attrlist) 897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
540 #define ecb_is_constant(expr) __builtin_constant_p (expr) 903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
541 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
542 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
543#else 920#else
544 #define ecb_attribute(attrlist)
545 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality) 921 #define ecb_prefetch(addr,rw,locality)
548#endif 922#endif
549 923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
550#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__)) 951#endif
952
552#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
554#define ecb_pure ecb_attribute ((__pure__)) 955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
555 968
556#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__)) 970 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__)) 971 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__)) 972 #define ecb_cold ecb_attribute ((__cold__))
… …
566/* put around conditional expressions if you are very sure that the */ 979/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */ 980/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */ 981/* booleans, not the expression. */
569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */ 984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
572 987
573#define expect_false(cond) ecb_expect_false (cond) 988/* count trailing zero bits and count # of one bits */
574#define expect_true(cond) ecb_expect_true (cond) 989#if ECB_GCC_VERSION(3,4) \
575#define noinline ecb_noinline 990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
576 1595
577#define inline_size ecb_inline 1596#define inline_size ecb_inline
578 1597
579#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
580# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
581#else 1600#else
582# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
583#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
584 1669
585#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
586 1671
587#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
588# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
589#else 1674#else
590# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
591#endif 1676#endif
592 1677
593#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
594#define EMPTY2(a,b) /* used to suppress some warnings */
595 1679
596typedef ev_watcher *W; 1680typedef ev_watcher *W;
597typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
598typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
599 1683
… …
624# include "ev_win32.c" 1708# include "ev_win32.c"
625#endif 1709#endif
626 1710
627/*****************************************************************************/ 1711/*****************************************************************************/
628 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
629/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
630 1718
631#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
632# include <math.h> 1720# include <math.h>
633# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
634#else 1722#else
635 1723
636#include <float.h> 1724#include <float.h>
637 1725
638/* a floor() replacement function, should be independent of ev_tstamp type */ 1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
639static ev_tstamp noinline 1728static ev_tstamp
640ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
641{ 1730{
642 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
643#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
645#else 1734#else
646 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
647#endif 1736#endif
648 1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
649 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
650 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
651 { 1748 {
652 ev_tstamp f; 1749 ev_tstamp f;
653 1750
654 if (v == v - 1.) 1751 if (v == v - 1.)
655 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
656 1753
657 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
658 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
659 } 1756 }
660 1757
661 /* special treatment for negative args? */
662 if (expect_false (v < 0.))
663 {
664 ev_tstamp f = -ev_floor (-v);
665
666 return f - (f == v ? 0 : 1);
667 }
668
669 /* fits into an unsigned long */ 1758 /* fits into an unsigned long */
670 return (unsigned long)v; 1759 return (unsigned long)v;
671} 1760}
672 1761
673#endif 1762#endif
… …
676 1765
677#ifdef __linux 1766#ifdef __linux
678# include <sys/utsname.h> 1767# include <sys/utsname.h>
679#endif 1768#endif
680 1769
681static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
682ev_linux_version (void) 1772ev_linux_version (void)
683{ 1773{
684#ifdef __linux 1774#ifdef __linux
685 unsigned int v = 0; 1775 unsigned int v = 0;
686 struct utsname buf; 1776 struct utsname buf;
… …
715} 1805}
716 1806
717/*****************************************************************************/ 1807/*****************************************************************************/
718 1808
719#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
720static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
721ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
722{ 1813{
723 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
724} 1815}
725#endif 1816#endif
726 1817
727static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
728 1819
729void ecb_cold 1820ecb_cold
1821void
730ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
731{ 1823{
732 syserr_cb = cb; 1824 syserr_cb = cb;
733} 1825}
734 1826
735static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
736ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
737{ 1830{
738 if (!msg) 1831 if (!msg)
739 msg = "(libev) system error"; 1832 msg = "(libev) system error";
740 1833
… …
753 abort (); 1846 abort ();
754 } 1847 }
755} 1848}
756 1849
757static void * 1850static void *
758ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
759{ 1852{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
763 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
764 * implement realloc (x, 0) (as required by both ansi c-89 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
765 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
766 */ 1858 */
767 1859
768 if (size) 1860 if (size)
769 return realloc (ptr, size); 1861 return realloc (ptr, size);
770 1862
771 free (ptr); 1863 free (ptr);
772 return 0; 1864 return 0;
773#endif
774} 1865}
775 1866
776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
777 1868
778void ecb_cold 1869ecb_cold
1870void
779ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
780{ 1872{
781 alloc = cb; 1873 alloc = cb;
782} 1874}
783 1875
784inline_speed void * 1876inline_speed void *
… …
811typedef struct 1903typedef struct
812{ 1904{
813 WL head; 1905 WL head;
814 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
815 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
816 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
817 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
818#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
819 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
820#endif 1912#endif
821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
822 SOCKET handle; 1914 SOCKET handle;
… …
872 #undef VAR 1964 #undef VAR
873 }; 1965 };
874 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
875 1967
876 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
877 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
878 1970
879#else 1971#else
880 1972
881 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
882 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
883 #include "ev_vars.h" 1975 #include "ev_vars.h"
884 #undef VAR 1976 #undef VAR
885 1977
886 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
887 1979
888#endif 1980#endif
889 1981
890#if EV_FEATURE_API 1982#if EV_FEATURE_API
891# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
892# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
893# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
894#else 1986#else
895# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
896# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
897# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
901 1993
902/*****************************************************************************/ 1994/*****************************************************************************/
903 1995
904#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
905ev_tstamp 1997ev_tstamp
906ev_time (void) 1998ev_time (void) EV_NOEXCEPT
907{ 1999{
908#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
909 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
910 { 2002 {
911 struct timespec ts; 2003 struct timespec ts;
912 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
913 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
914 } 2006 }
915#endif 2007#endif
916 2008
917 struct timeval tv; 2009 struct timeval tv;
918 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
919 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
920} 2012}
921#endif 2013#endif
922 2014
923inline_size ev_tstamp 2015inline_size ev_tstamp
924get_clock (void) 2016get_clock (void)
925{ 2017{
926#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
927 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
928 { 2020 {
929 struct timespec ts; 2021 struct timespec ts;
930 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
931 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
932 } 2024 }
933#endif 2025#endif
934 2026
935 return ev_time (); 2027 return ev_time ();
936} 2028}
937 2029
938#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
939ev_tstamp 2031ev_tstamp
940ev_now (EV_P) 2032ev_now (EV_P) EV_NOEXCEPT
941{ 2033{
942 return ev_rt_now; 2034 return ev_rt_now;
943} 2035}
944#endif 2036#endif
945 2037
946void 2038void
947ev_sleep (ev_tstamp delay) 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
948{ 2040{
949 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
950 { 2042 {
951#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
952 struct timespec ts; 2044 struct timespec ts;
953 2045
954 EV_TS_SET (ts, delay); 2046 EV_TS_SET (ts, delay);
955 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
956#elif defined(_WIN32) 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
957 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
958#else 2052#else
959 struct timeval tv; 2053 struct timeval tv;
960 2054
961 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
962 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
… …
980 2074
981 do 2075 do
982 ncur <<= 1; 2076 ncur <<= 1;
983 while (cnt > ncur); 2077 while (cnt > ncur);
984 2078
985 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2079 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
986 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2080 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
987 { 2081 {
988 ncur *= elem; 2082 ncur *= elem;
989 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2083 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
990 ncur = ncur - sizeof (void *) * 4; 2084 ncur = ncur - sizeof (void *) * 4;
… …
992 } 2086 }
993 2087
994 return ncur; 2088 return ncur;
995} 2089}
996 2090
997static void * noinline ecb_cold 2091ecb_noinline ecb_cold
2092static void *
998array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
999{ 2094{
1000 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
1001 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
1002} 2097}
1003 2098
2099#define array_needsize_noinit(base,offset,count)
2100
1004#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
1005 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1006 2103
1007#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
1008 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
1009 { \ 2106 { \
1010 int ecb_unused ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
1011 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
1012 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
1013 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
1014 } 2111 }
1015 2112
1016#if 0 2113#if 0
1017#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
1018 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1027 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1028 2125
1029/*****************************************************************************/ 2126/*****************************************************************************/
1030 2127
1031/* dummy callback for pending events */ 2128/* dummy callback for pending events */
1032static void noinline 2129ecb_noinline
2130static void
1033pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
1034{ 2132{
1035} 2133}
1036 2134
1037void noinline 2135ecb_noinline
2136void
1038ev_feed_event (EV_P_ void *w, int revents) 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1039{ 2138{
1040 W w_ = (W)w; 2139 W w_ = (W)w;
1041 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
1042 2141
1043 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
1044 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
1045 else 2144 else
1046 { 2145 {
1047 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
1048 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1049 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
1050 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
1051 } 2150 }
2151
2152 pendingpri = NUMPRI - 1;
1052} 2153}
1053 2154
1054inline_speed void 2155inline_speed void
1055feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
1056{ 2157{
1057 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1058 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
1059} 2160}
1060 2161
1061inline_size void 2162inline_size void
1062feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
1097inline_speed void 2198inline_speed void
1098fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
1099{ 2200{
1100 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
1101 2202
1102 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
1103 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1104} 2205}
1105 2206
1106void 2207void
1107ev_feed_fd_event (EV_P_ int fd, int revents) 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1108{ 2209{
1109 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
1110 fd_event_nocheck (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
1111} 2212}
1112 2213
… …
1149 ev_io *w; 2250 ev_io *w;
1150 2251
1151 unsigned char o_events = anfd->events; 2252 unsigned char o_events = anfd->events;
1152 unsigned char o_reify = anfd->reify; 2253 unsigned char o_reify = anfd->reify;
1153 2254
1154 anfd->reify = 0; 2255 anfd->reify = 0;
1155 2256
1156 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1157 { 2258 {
1158 anfd->events = 0; 2259 anfd->events = 0;
1159 2260
1160 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1161 anfd->events |= (unsigned char)w->events; 2262 anfd->events |= (unsigned char)w->events;
… …
1170 2271
1171 fdchangecnt = 0; 2272 fdchangecnt = 0;
1172} 2273}
1173 2274
1174/* something about the given fd changed */ 2275/* something about the given fd changed */
1175inline_size void 2276inline_size
2277void
1176fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
1177{ 2279{
1178 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
1179 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
1180 2282
1181 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
1182 { 2284 {
1183 ++fdchangecnt; 2285 ++fdchangecnt;
1184 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1185 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
1186 } 2288 }
1187} 2289}
1188 2290
1189/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1190inline_speed void ecb_cold 2292inline_speed ecb_cold void
1191fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
1192{ 2294{
1193 ev_io *w; 2295 ev_io *w;
1194 2296
1195 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
1198 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1199 } 2301 }
1200} 2302}
1201 2303
1202/* check whether the given fd is actually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
1203inline_size int ecb_cold 2305inline_size ecb_cold int
1204fd_valid (int fd) 2306fd_valid (int fd)
1205{ 2307{
1206#ifdef _WIN32 2308#ifdef _WIN32
1207 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1208#else 2310#else
1209 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
1210#endif 2312#endif
1211} 2313}
1212 2314
1213/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
1214static void noinline ecb_cold 2316ecb_noinline ecb_cold
2317static void
1215fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
1216{ 2319{
1217 int fd; 2320 int fd;
1218 2321
1219 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
1221 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
1222 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
1223} 2326}
1224 2327
1225/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
1226static void noinline ecb_cold 2329ecb_noinline ecb_cold
2330static void
1227fd_enomem (EV_P) 2331fd_enomem (EV_P)
1228{ 2332{
1229 int fd; 2333 int fd;
1230 2334
1231 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
… …
1235 break; 2339 break;
1236 } 2340 }
1237} 2341}
1238 2342
1239/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
1240static void noinline 2344ecb_noinline
2345static void
1241fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
1242{ 2347{
1243 int fd; 2348 int fd;
1244 2349
1245 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
1298 ev_tstamp minat; 2403 ev_tstamp minat;
1299 ANHE *minpos; 2404 ANHE *minpos;
1300 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1301 2406
1302 /* find minimum child */ 2407 /* find minimum child */
1303 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
1304 { 2409 {
1305 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1307 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2412 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1308 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1309 } 2414 }
1310 else if (pos < E) 2415 else if (pos < E)
1311 { 2416 {
1312 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1313 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2418 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1314 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2419 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1315 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1316 } 2421 }
1317 else 2422 else
1318 break; 2423 break;
1319 2424
1320 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
1328 2433
1329 heap [k] = he; 2434 heap [k] = he;
1330 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
1331} 2436}
1332 2437
1333#else /* 4HEAP */ 2438#else /* not 4HEAP */
1334 2439
1335#define HEAP0 1 2440#define HEAP0 1
1336#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
1337#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
1338 2443
… …
1426 2531
1427/*****************************************************************************/ 2532/*****************************************************************************/
1428 2533
1429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1430 2535
1431static void noinline ecb_cold 2536ecb_noinline ecb_cold
2537static void
1432evpipe_init (EV_P) 2538evpipe_init (EV_P)
1433{ 2539{
1434 if (!ev_is_active (&pipe_w)) 2540 if (!ev_is_active (&pipe_w))
1435 { 2541 {
2542 int fds [2];
2543
1436# if EV_USE_EVENTFD 2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1438 if (evfd < 0 && errno == EINVAL) 2547 if (fds [1] < 0 && errno == EINVAL)
1439 evfd = eventfd (0, 0); 2548 fds [1] = eventfd (0, 0);
1440 2549
1441 if (evfd >= 0) 2550 if (fds [1] < 0)
2551# endif
1442 { 2552 {
2553 while (pipe (fds))
2554 ev_syserr ("(libev) error creating signal/async pipe");
2555
2556 fd_intern (fds [0]);
2557 }
2558
1443 evpipe [0] = -1; 2559 evpipe [0] = fds [0];
1444 fd_intern (evfd); /* doing it twice doesn't hurt */ 2560
1445 ev_io_set (&pipe_w, evfd, EV_READ); 2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2577 ev_io_start (EV_A_ &pipe_w);
2578 ev_unref (EV_A); /* watcher should not keep loop alive */
2579 }
2580}
2581
2582inline_speed void
2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2584{
2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2586
2587 if (ecb_expect_true (*flag))
2588 return;
2589
2590 *flag = 1;
2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2592
2593 pipe_write_skipped = 1;
2594
2595 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2596
2597 if (pipe_write_wanted)
2598 {
2599 int old_errno;
2600
2601 pipe_write_skipped = 0;
2602 ECB_MEMORY_FENCE_RELEASE;
2603
2604 old_errno = errno; /* save errno because write will clobber it */
2605
2606#if EV_USE_EVENTFD
2607 if (evpipe [0] < 0)
2608 {
2609 uint64_t counter = 1;
2610 write (evpipe [1], &counter, sizeof (uint64_t));
1446 } 2611 }
1447 else 2612 else
1448# endif 2613#endif
1449 { 2614 {
1450 while (pipe (evpipe)) 2615#ifdef _WIN32
1451 ev_syserr ("(libev) error creating signal/async pipe"); 2616 WSABUF buf;
1452 2617 DWORD sent;
1453 fd_intern (evpipe [0]); 2618 buf.buf = (char *)&buf;
1454 fd_intern (evpipe [1]); 2619 buf.len = 1;
1455 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1456 } 2621#else
1457
1458 ev_io_start (EV_A_ &pipe_w);
1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1460 }
1461}
1462
1463inline_speed void
1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1465{
1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1483 old_errno = errno; /* save errno because write will clobber it */
1484
1485#if EV_USE_EVENTFD
1486 if (evfd >= 0)
1487 {
1488 uint64_t counter = 1;
1489 write (evfd, &counter, sizeof (uint64_t));
1490 }
1491 else
1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1499 write (evpipe [1], &(evpipe [1]), 1); 2622 write (evpipe [1], &(evpipe [1]), 1);
2623#endif
1500 } 2624 }
1501 2625
1502 errno = old_errno; 2626 errno = old_errno;
1503 } 2627 }
1504} 2628}
… …
1511 int i; 2635 int i;
1512 2636
1513 if (revents & EV_READ) 2637 if (revents & EV_READ)
1514 { 2638 {
1515#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1516 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1517 { 2641 {
1518 uint64_t counter; 2642 uint64_t counter;
1519 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1520 } 2644 }
1521 else 2645 else
1522#endif 2646#endif
1523 { 2647 {
1524 char dummy; 2648 char dummy[4];
1525 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2649#ifdef _WIN32
2650 WSABUF buf;
2651 DWORD recvd;
2652 DWORD flags = 0;
2653 buf.buf = dummy;
2654 buf.len = sizeof (dummy);
2655 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2656#else
1526 read (evpipe [0], &dummy, 1); 2657 read (evpipe [0], &dummy, sizeof (dummy));
2658#endif
1527 } 2659 }
1528 } 2660 }
1529 2661
1530 pipe_write_skipped = 0; 2662 pipe_write_skipped = 0;
2663
2664 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1531 2665
1532#if EV_SIGNAL_ENABLE 2666#if EV_SIGNAL_ENABLE
1533 if (sig_pending) 2667 if (sig_pending)
1534 { 2668 {
1535 sig_pending = 0; 2669 sig_pending = 0;
1536 2670
2671 ECB_MEMORY_FENCE;
2672
1537 for (i = EV_NSIG - 1; i--; ) 2673 for (i = EV_NSIG - 1; i--; )
1538 if (expect_false (signals [i].pending)) 2674 if (ecb_expect_false (signals [i].pending))
1539 ev_feed_signal_event (EV_A_ i + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1540 } 2676 }
1541#endif 2677#endif
1542 2678
1543#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
1544 if (async_pending) 2680 if (async_pending)
1545 { 2681 {
1546 async_pending = 0; 2682 async_pending = 0;
2683
2684 ECB_MEMORY_FENCE;
1547 2685
1548 for (i = asynccnt; i--; ) 2686 for (i = asynccnt; i--; )
1549 if (asyncs [i]->sent) 2687 if (asyncs [i]->sent)
1550 { 2688 {
1551 asyncs [i]->sent = 0; 2689 asyncs [i]->sent = 0;
2690 ECB_MEMORY_FENCE_RELEASE;
1552 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2691 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1553 } 2692 }
1554 } 2693 }
1555#endif 2694#endif
1556} 2695}
1557 2696
1558/*****************************************************************************/ 2697/*****************************************************************************/
1559 2698
1560void 2699void
1561ev_feed_signal (int signum) 2700ev_feed_signal (int signum) EV_NOEXCEPT
1562{ 2701{
1563#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
1564 EV_P = signals [signum - 1].loop; 2705 EV_A = signals [signum - 1].loop;
1565 2706
1566 if (!EV_A) 2707 if (!EV_A)
1567 return; 2708 return;
1568#endif 2709#endif
1569 2710
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1; 2711 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending); 2712 evpipe_write (EV_A_ &sig_pending);
1575} 2713}
1576 2714
1577static void 2715static void
… …
1582#endif 2720#endif
1583 2721
1584 ev_feed_signal (signum); 2722 ev_feed_signal (signum);
1585} 2723}
1586 2724
1587void noinline 2725ecb_noinline
2726void
1588ev_feed_signal_event (EV_P_ int signum) 2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1589{ 2728{
1590 WL w; 2729 WL w;
1591 2730
1592 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1593 return; 2732 return;
1594 2733
1595 --signum; 2734 --signum;
1596 2735
1597#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
1598 /* it is permissible to try to feed a signal to the wrong loop */ 2737 /* it is permissible to try to feed a signal to the wrong loop */
1599 /* or, likely more useful, feeding a signal nobody is waiting for */ 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
1600 2739
1601 if (expect_false (signals [signum].loop != EV_A)) 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
1602 return; 2741 return;
1603#endif 2742#endif
1604 2743
1605 signals [signum].pending = 0; 2744 signals [signum].pending = 0;
2745 ECB_MEMORY_FENCE_RELEASE;
1606 2746
1607 for (w = signals [signum].head; w; w = w->next) 2747 for (w = signals [signum].head; w; w = w->next)
1608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1609} 2749}
1610 2750
… …
1701# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
1702#endif 2842#endif
1703#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
1704# include "ev_epoll.c" 2844# include "ev_epoll.c"
1705#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
1706#if EV_USE_POLL 2852#if EV_USE_POLL
1707# include "ev_poll.c" 2853# include "ev_poll.c"
1708#endif 2854#endif
1709#if EV_USE_SELECT 2855#if EV_USE_SELECT
1710# include "ev_select.c" 2856# include "ev_select.c"
1711#endif 2857#endif
1712 2858
1713int ecb_cold 2859ecb_cold int
1714ev_version_major (void) 2860ev_version_major (void) EV_NOEXCEPT
1715{ 2861{
1716 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
1717} 2863}
1718 2864
1719int ecb_cold 2865ecb_cold int
1720ev_version_minor (void) 2866ev_version_minor (void) EV_NOEXCEPT
1721{ 2867{
1722 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
1723} 2869}
1724 2870
1725/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
1726int inline_size ecb_cold 2872inline_size ecb_cold int
1727enable_secure (void) 2873enable_secure (void)
1728{ 2874{
1729#ifdef _WIN32 2875#ifdef _WIN32
1730 return 0; 2876 return 0;
1731#else 2877#else
1732 return getuid () != geteuid () 2878 return getuid () != geteuid ()
1733 || getgid () != getegid (); 2879 || getgid () != getegid ();
1734#endif 2880#endif
1735} 2881}
1736 2882
1737unsigned int ecb_cold 2883ecb_cold
2884unsigned int
1738ev_supported_backends (void) 2885ev_supported_backends (void) EV_NOEXCEPT
1739{ 2886{
1740 unsigned int flags = 0; 2887 unsigned int flags = 0;
1741 2888
1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1743 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1744 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1745 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1746 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1747 2896
1748 return flags; 2897 return flags;
1749} 2898}
1750 2899
1751unsigned int ecb_cold 2900ecb_cold
2901unsigned int
1752ev_recommended_backends (void) 2902ev_recommended_backends (void) EV_NOEXCEPT
1753{ 2903{
1754 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
1755 2905
1756#ifndef __NetBSD__ 2906#ifndef __NetBSD__
1757 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
1765#endif 2915#endif
1766#ifdef __FreeBSD__ 2916#ifdef __FreeBSD__
1767 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1768#endif 2918#endif
1769 2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
2928
1770 return flags; 2929 return flags;
1771} 2930}
1772 2931
1773unsigned int ecb_cold 2932ecb_cold
2933unsigned int
1774ev_embeddable_backends (void) 2934ev_embeddable_backends (void) EV_NOEXCEPT
1775{ 2935{
1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1777 2937
1778 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1779 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1780 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
1781 2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
2948
1782 return flags; 2949 return flags;
1783} 2950}
1784 2951
1785unsigned int 2952unsigned int
1786ev_backend (EV_P) 2953ev_backend (EV_P) EV_NOEXCEPT
1787{ 2954{
1788 return backend; 2955 return backend;
1789} 2956}
1790 2957
1791#if EV_FEATURE_API 2958#if EV_FEATURE_API
1792unsigned int 2959unsigned int
1793ev_iteration (EV_P) 2960ev_iteration (EV_P) EV_NOEXCEPT
1794{ 2961{
1795 return loop_count; 2962 return loop_count;
1796} 2963}
1797 2964
1798unsigned int 2965unsigned int
1799ev_depth (EV_P) 2966ev_depth (EV_P) EV_NOEXCEPT
1800{ 2967{
1801 return loop_depth; 2968 return loop_depth;
1802} 2969}
1803 2970
1804void 2971void
1805ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1806{ 2973{
1807 io_blocktime = interval; 2974 io_blocktime = interval;
1808} 2975}
1809 2976
1810void 2977void
1811ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1812{ 2979{
1813 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
1814} 2981}
1815 2982
1816void 2983void
1817ev_set_userdata (EV_P_ void *data) 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1818{ 2985{
1819 userdata = data; 2986 userdata = data;
1820} 2987}
1821 2988
1822void * 2989void *
1823ev_userdata (EV_P) 2990ev_userdata (EV_P) EV_NOEXCEPT
1824{ 2991{
1825 return userdata; 2992 return userdata;
1826} 2993}
1827 2994
1828void 2995void
1829ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1830{ 2997{
1831 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
1832} 2999}
1833 3000
1834void 3001void
1835ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1836{ 3003{
1837 release_cb = release; 3004 release_cb = release;
1838 acquire_cb = acquire; 3005 acquire_cb = acquire;
1839} 3006}
1840#endif 3007#endif
1841 3008
1842/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
1843static void noinline ecb_cold 3010ecb_noinline ecb_cold
3011static void
1844loop_init (EV_P_ unsigned int flags) 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1845{ 3013{
1846 if (!backend) 3014 if (!backend)
1847 { 3015 {
1848 origflags = flags; 3016 origflags = flags;
1849 3017
… …
1894#if EV_ASYNC_ENABLE 3062#if EV_ASYNC_ENABLE
1895 async_pending = 0; 3063 async_pending = 0;
1896#endif 3064#endif
1897 pipe_write_skipped = 0; 3065 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0; 3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
1899#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1901#endif 3071#endif
1902#if EV_USE_SIGNALFD 3072#if EV_USE_SIGNALFD
1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1905 3075
1906 if (!(flags & EVBACKEND_MASK)) 3076 if (!(flags & EVBACKEND_MASK))
1907 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
1908 3078
1909#if EV_USE_IOCP 3079#if EV_USE_IOCP
1910 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1911#endif 3081#endif
1912#if EV_USE_PORT 3082#if EV_USE_PORT
1913 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1914#endif 3084#endif
1915#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
1916 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1917#endif 3093#endif
1918#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
1919 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1920#endif 3096#endif
1921#if EV_USE_POLL 3097#if EV_USE_POLL
1922 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1923#endif 3099#endif
1924#if EV_USE_SELECT 3100#if EV_USE_SELECT
1925 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1926#endif 3102#endif
1927 3103
1928 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
1929 3105
1930#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1933#endif 3109#endif
1934 } 3110 }
1935} 3111}
1936 3112
1937/* free up a loop structure */ 3113/* free up a loop structure */
1938void ecb_cold 3114ecb_cold
3115void
1939ev_loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
1940{ 3117{
1941 int i; 3118 int i;
1942 3119
1943#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
… …
1946 return; 3123 return;
1947#endif 3124#endif
1948 3125
1949#if EV_CLEANUP_ENABLE 3126#if EV_CLEANUP_ENABLE
1950 /* queue cleanup watchers (and execute them) */ 3127 /* queue cleanup watchers (and execute them) */
1951 if (expect_false (cleanupcnt)) 3128 if (ecb_expect_false (cleanupcnt))
1952 { 3129 {
1953 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1954 EV_INVOKE_PENDING; 3131 EV_INVOKE_PENDING;
1955 } 3132 }
1956#endif 3133#endif
1957 3134
1958#if EV_CHILD_ENABLE 3135#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev)) 3136 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1960 { 3137 {
1961 ev_ref (EV_A); /* child watcher */ 3138 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev); 3139 ev_signal_stop (EV_A_ &childev);
1963 } 3140 }
1964#endif 3141#endif
… …
1966 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
1967 { 3144 {
1968 /*ev_ref (EV_A);*/ 3145 /*ev_ref (EV_A);*/
1969 /*ev_io_stop (EV_A_ &pipe_w);*/ 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
1970 3147
1971#if EV_USE_EVENTFD
1972 if (evfd >= 0)
1973 close (evfd);
1974#endif
1975
1976 if (evpipe [0] >= 0)
1977 {
1978 EV_WIN32_CLOSE_FD (evpipe [0]); 3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1979 EV_WIN32_CLOSE_FD (evpipe [1]); 3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1980 }
1981 } 3150 }
1982 3151
1983#if EV_USE_SIGNALFD 3152#if EV_USE_SIGNALFD
1984 if (ev_is_active (&sigfd_w)) 3153 if (ev_is_active (&sigfd_w))
1985 close (sigfd); 3154 close (sigfd);
… …
1992 3161
1993 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
1994 close (backend_fd); 3163 close (backend_fd);
1995 3164
1996#if EV_USE_IOCP 3165#if EV_USE_IOCP
1997 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1998#endif 3167#endif
1999#if EV_USE_PORT 3168#if EV_USE_PORT
2000 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2001#endif 3170#endif
2002#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
2003 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2004#endif 3179#endif
2005#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
2006 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2007#endif 3182#endif
2008#if EV_USE_POLL 3183#if EV_USE_POLL
2009 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2010#endif 3185#endif
2011#if EV_USE_SELECT 3186#if EV_USE_SELECT
2012 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2013#endif 3188#endif
2014 3189
2015 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
2016 { 3191 {
2017 array_free (pending, [i]); 3192 array_free (pending, [i]);
… …
2059 3234
2060inline_size void 3235inline_size void
2061loop_fork (EV_P) 3236loop_fork (EV_P)
2062{ 3237{
2063#if EV_USE_PORT 3238#if EV_USE_PORT
2064 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2065#endif 3240#endif
2066#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
2067 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2068#endif 3249#endif
2069#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
2070 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2071#endif 3252#endif
2072#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
2073 infy_fork (EV_A); 3254 infy_fork (EV_A);
2074#endif 3255#endif
2075 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2076 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
2077 { 3259 {
2078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3260 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2079 3261
2080 ev_ref (EV_A); 3262 ev_ref (EV_A);
2081 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
2082 3264
2083#if EV_USE_EVENTFD
2084 if (evfd >= 0)
2085 close (evfd);
2086#endif
2087
2088 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
2089 {
2090 EV_WIN32_CLOSE_FD (evpipe [0]); 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
2091 EV_WIN32_CLOSE_FD (evpipe [1]);
2092 }
2093 3267
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2095 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
2096 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
2097 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2098#endif
2099 } 3271 }
3272#endif
2100 3273
2101 postfork = 0; 3274 postfork = 0;
2102} 3275}
2103 3276
2104#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
2105 3278
3279ecb_cold
2106struct ev_loop * ecb_cold 3280struct ev_loop *
2107ev_loop_new (unsigned int flags) 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
2108{ 3282{
2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2110 3284
2111 memset (EV_A, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
2112 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
… …
2119} 3293}
2120 3294
2121#endif /* multiplicity */ 3295#endif /* multiplicity */
2122 3296
2123#if EV_VERIFY 3297#if EV_VERIFY
2124static void noinline ecb_cold 3298ecb_noinline ecb_cold
3299static void
2125verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
2126{ 3301{
2127 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2128 3303
2129 if (w->pending) 3304 if (w->pending)
2130 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2131} 3306}
2132 3307
2133static void noinline ecb_cold 3308ecb_noinline ecb_cold
3309static void
2134verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
2135{ 3311{
2136 int i; 3312 int i;
2137 3313
2138 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2143 3319
2144 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2145 } 3321 }
2146} 3322}
2147 3323
2148static void noinline ecb_cold 3324ecb_noinline ecb_cold
3325static void
2149array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
2150{ 3327{
2151 while (cnt--) 3328 while (cnt--)
2152 { 3329 {
2153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2156} 3333}
2157#endif 3334#endif
2158 3335
2159#if EV_FEATURE_API 3336#if EV_FEATURE_API
2160void ecb_cold 3337void ecb_cold
2161ev_verify (EV_P) 3338ev_verify (EV_P) EV_NOEXCEPT
2162{ 3339{
2163#if EV_VERIFY 3340#if EV_VERIFY
2164 int i; 3341 int i;
2165 WL w; 3342 WL w, w2;
2166 3343
2167 assert (activecnt >= -1); 3344 assert (activecnt >= -1);
2168 3345
2169 assert (fdchangemax >= fdchangecnt); 3346 assert (fdchangemax >= fdchangecnt);
2170 for (i = 0; i < fdchangecnt; ++i) 3347 for (i = 0; i < fdchangecnt; ++i)
2171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3348 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2172 3349
2173 assert (anfdmax >= 0); 3350 assert (anfdmax >= 0);
2174 for (i = 0; i < anfdmax; ++i) 3351 for (i = 0; i < anfdmax; ++i)
3352 {
3353 int j = 0;
3354
2175 for (w = anfds [i].head; w; w = w->next) 3355 for (w = w2 = anfds [i].head; w; w = w->next)
2176 { 3356 {
2177 verify_watcher (EV_A_ (W)w); 3357 verify_watcher (EV_A_ (W)w);
3358
3359 if (j++ & 1)
3360 {
3361 assert (("libev: io watcher list contains a loop", w != w2));
3362 w2 = w2->next;
3363 }
3364
2178 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3365 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2179 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3366 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2180 } 3367 }
3368 }
2181 3369
2182 assert (timermax >= timercnt); 3370 assert (timermax >= timercnt);
2183 verify_heap (EV_A_ timers, timercnt); 3371 verify_heap (EV_A_ timers, timercnt);
2184 3372
2185#if EV_PERIODIC_ENABLE 3373#if EV_PERIODIC_ENABLE
… …
2231#endif 3419#endif
2232} 3420}
2233#endif 3421#endif
2234 3422
2235#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
2236struct ev_loop * ecb_cold 3425struct ev_loop *
2237#else 3426#else
2238int 3427int
2239#endif 3428#endif
2240ev_default_loop (unsigned int flags) 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
2241{ 3430{
2242 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
2243 { 3432 {
2244#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
2245 EV_P = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2264 3453
2265 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
2266} 3455}
2267 3456
2268void 3457void
2269ev_loop_fork (EV_P) 3458ev_loop_fork (EV_P) EV_NOEXCEPT
2270{ 3459{
2271 postfork = 1; /* must be in line with ev_default_fork */ 3460 postfork = 1;
2272} 3461}
2273 3462
2274/*****************************************************************************/ 3463/*****************************************************************************/
2275 3464
2276void 3465void
… …
2278{ 3467{
2279 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
2280} 3469}
2281 3470
2282unsigned int 3471unsigned int
2283ev_pending_count (EV_P) 3472ev_pending_count (EV_P) EV_NOEXCEPT
2284{ 3473{
2285 int pri; 3474 int pri;
2286 unsigned int count = 0; 3475 unsigned int count = 0;
2287 3476
2288 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
2289 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
2290 3479
2291 return count; 3480 return count;
2292} 3481}
2293 3482
2294void noinline 3483ecb_noinline
3484void
2295ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
2296{ 3486{
2297 int pri; 3487 pendingpri = NUMPRI;
2298 3488
2299 for (pri = NUMPRI; pri--; ) 3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
2300 while (pendingcnt [pri]) 3494 while (pendingcnt [pendingpri])
2301 { 3495 {
2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2303 3497
2304 p->w->pending = 0; 3498 p->w->pending = 0;
2305 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
2306 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2307 } 3501 }
3502 }
3503 while (pendingpri);
2308} 3504}
2309 3505
2310#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
2311/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
2312/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
2313inline_size void 3509inline_size void
2314idle_reify (EV_P) 3510idle_reify (EV_P)
2315{ 3511{
2316 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
2317 { 3513 {
2318 int pri; 3514 int pri;
2319 3515
2320 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
2321 { 3517 {
… …
2351 { 3547 {
2352 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
2353 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
2354 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
2355 3551
2356 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2357 3553
2358 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
2359 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
2360 } 3556 }
2361 else 3557 else
… …
2370 } 3566 }
2371} 3567}
2372 3568
2373#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
2374 3570
2375static void noinline 3571ecb_noinline
3572static void
2376periodic_recalc (EV_P_ ev_periodic *w) 3573periodic_recalc (EV_P_ ev_periodic *w)
2377{ 3574{
2378 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2379 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2380 3577
… …
2382 while (at <= ev_rt_now) 3579 while (at <= ev_rt_now)
2383 { 3580 {
2384 ev_tstamp nat = at + w->interval; 3581 ev_tstamp nat = at + w->interval;
2385 3582
2386 /* when resolution fails us, we use ev_rt_now */ 3583 /* when resolution fails us, we use ev_rt_now */
2387 if (expect_false (nat == at)) 3584 if (ecb_expect_false (nat == at))
2388 { 3585 {
2389 at = ev_rt_now; 3586 at = ev_rt_now;
2390 break; 3587 break;
2391 } 3588 }
2392 3589
… …
2402{ 3599{
2403 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2404 3601
2405 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3602 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2406 { 3603 {
2407 int feed_count = 0;
2408
2409 do 3604 do
2410 { 3605 {
2411 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3606 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2412 3607
2413 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3608 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2440 } 3635 }
2441} 3636}
2442 3637
2443/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
2444/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
2445static void noinline ecb_cold 3640ecb_noinline ecb_cold
3641static void
2446periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2447{ 3643{
2448 int i; 3644 int i;
2449 3645
2450 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2463 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2464} 3660}
2465#endif 3661#endif
2466 3662
2467/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2468static void noinline ecb_cold 3664ecb_noinline ecb_cold
3665static void
2469timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2470{ 3667{
2471 int i; 3668 int i;
2472 3669
2473 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2482/* also detect if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2483inline_speed void 3680inline_speed void
2484time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2485{ 3682{
2486#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2487 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2488 { 3685 {
2489 int i; 3686 int i;
2490 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2491 3688
2492 mn_now = get_clock (); 3689 mn_now = get_clock ();
2493 3690
2494 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2495 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2496 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2497 { 3694 {
2498 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2499 return; 3696 return;
2500 } 3697 }
2501 3698
… …
2515 ev_tstamp diff; 3712 ev_tstamp diff;
2516 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2517 3714
2518 diff = odiff - rtmn_diff; 3715 diff = odiff - rtmn_diff;
2519 3716
2520 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2521 return; /* all is well */ 3718 return; /* all is well */
2522 3719
2523 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2524 mn_now = get_clock (); 3721 mn_now = get_clock ();
2525 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2534 else 3731 else
2535#endif 3732#endif
2536 { 3733 {
2537 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
2538 3735
2539 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2540 { 3737 {
2541 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* adjust timers. this is easy, as the offset is the same for all of them */
2542 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2543#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
2544 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
2547 3744
2548 mn_now = ev_rt_now; 3745 mn_now = ev_rt_now;
2549 } 3746 }
2550} 3747}
2551 3748
2552void 3749int
2553ev_run (EV_P_ int flags) 3750ev_run (EV_P_ int flags)
2554{ 3751{
2555#if EV_FEATURE_API 3752#if EV_FEATURE_API
2556 ++loop_depth; 3753 ++loop_depth;
2557#endif 3754#endif
… …
2567#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
2568 ev_verify (EV_A); 3765 ev_verify (EV_A);
2569#endif 3766#endif
2570 3767
2571#ifndef _WIN32 3768#ifndef _WIN32
2572 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2573 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
2574 { 3771 {
2575 curpid = getpid (); 3772 curpid = getpid ();
2576 postfork = 1; 3773 postfork = 1;
2577 } 3774 }
2578#endif 3775#endif
2579 3776
2580#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
2581 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
2582 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
2583 if (forkcnt) 3780 if (forkcnt)
2584 { 3781 {
2585 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2586 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
2587 } 3784 }
2588#endif 3785#endif
2589 3786
2590#if EV_PREPARE_ENABLE 3787#if EV_PREPARE_ENABLE
2591 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
2592 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
2593 { 3790 {
2594 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2595 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
2596 } 3793 }
2597#endif 3794#endif
2598 3795
2599 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
2600 break; 3797 break;
2601 3798
2602 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
2603 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
2604 loop_fork (EV_A); 3801 loop_fork (EV_A);
2605 3802
2606 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
2607 fd_reify (EV_A); 3804 fd_reify (EV_A);
2608 3805
… …
2613 3810
2614 /* remember old timestamp for io_blocktime calculation */ 3811 /* remember old timestamp for io_blocktime calculation */
2615 ev_tstamp prev_mn_now = mn_now; 3812 ev_tstamp prev_mn_now = mn_now;
2616 3813
2617 /* update time to cancel out callback processing overhead */ 3814 /* update time to cancel out callback processing overhead */
2618 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2619 3816
2620 /* from now on, we want a pipe-wake-up */ 3817 /* from now on, we want a pipe-wake-up */
2621 pipe_write_wanted = 1; 3818 pipe_write_wanted = 1;
2622 3819
2623 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2624 3821
2625 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2626 { 3823 {
2627 waittime = MAX_BLOCKTIME; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2628 3825
2629 if (timercnt) 3826 if (timercnt)
2630 { 3827 {
2631 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2632 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
… …
2639 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
2640 } 3837 }
2641#endif 3838#endif
2642 3839
2643 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
2644 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
2645 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
2646 3843
2647 /* at this point, we NEED to wait, so we have to ensure */ 3844 /* at this point, we NEED to wait, so we have to ensure */
2648 /* to pass a minimum nonzero value to the backend */ 3845 /* to pass a minimum nonzero value to the backend */
2649 if (expect_false (waittime < backend_mintime)) 3846 if (ecb_expect_false (waittime < backend_mintime))
2650 waittime = backend_mintime; 3847 waittime = backend_mintime;
2651 3848
2652 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
2653 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
2654 { 3851 {
2655 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2656 3853
2657 if (sleeptime > waittime - backend_mintime) 3854 if (sleeptime > waittime - backend_mintime)
2658 sleeptime = waittime - backend_mintime; 3855 sleeptime = waittime - backend_mintime;
2659 3856
2660 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2661 { 3858 {
2662 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
2663 waittime -= sleeptime; 3860 waittime -= sleeptime;
2664 } 3861 }
2665 } 3862 }
… …
2670#endif 3867#endif
2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3868 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2672 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674 3871
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2676 3873
3874 ECB_MEMORY_FENCE_ACQUIRE;
2677 if (pipe_write_skipped) 3875 if (pipe_write_skipped)
2678 { 3876 {
2679 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 } 3879 }
2682 3880
2683
2684 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
2685 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
2686 } 3883 }
2687 3884
2688 /* queue pending timers and reschedule them */ 3885 /* queue pending timers and reschedule them */
… …
2696 idle_reify (EV_A); 3893 idle_reify (EV_A);
2697#endif 3894#endif
2698 3895
2699#if EV_CHECK_ENABLE 3896#if EV_CHECK_ENABLE
2700 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
2701 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
2702 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2703#endif 3900#endif
2704 3901
2705 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
2706 } 3903 }
2707 while (expect_true ( 3904 while (ecb_expect_true (
2708 activecnt 3905 activecnt
2709 && !loop_done 3906 && !loop_done
2710 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2711 )); 3908 ));
2712 3909
… …
2714 loop_done = EVBREAK_CANCEL; 3911 loop_done = EVBREAK_CANCEL;
2715 3912
2716#if EV_FEATURE_API 3913#if EV_FEATURE_API
2717 --loop_depth; 3914 --loop_depth;
2718#endif 3915#endif
2719}
2720 3916
3917 return activecnt;
3918}
3919
2721void 3920void
2722ev_break (EV_P_ int how) 3921ev_break (EV_P_ int how) EV_NOEXCEPT
2723{ 3922{
2724 loop_done = how; 3923 loop_done = how;
2725} 3924}
2726 3925
2727void 3926void
2728ev_ref (EV_P) 3927ev_ref (EV_P) EV_NOEXCEPT
2729{ 3928{
2730 ++activecnt; 3929 ++activecnt;
2731} 3930}
2732 3931
2733void 3932void
2734ev_unref (EV_P) 3933ev_unref (EV_P) EV_NOEXCEPT
2735{ 3934{
2736 --activecnt; 3935 --activecnt;
2737} 3936}
2738 3937
2739void 3938void
2740ev_now_update (EV_P) 3939ev_now_update (EV_P) EV_NOEXCEPT
2741{ 3940{
2742 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
2743} 3942}
2744 3943
2745void 3944void
2746ev_suspend (EV_P) 3945ev_suspend (EV_P) EV_NOEXCEPT
2747{ 3946{
2748 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
2749} 3948}
2750 3949
2751void 3950void
2752ev_resume (EV_P) 3951ev_resume (EV_P) EV_NOEXCEPT
2753{ 3952{
2754 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
2755 3954
2756 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
2757 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2774inline_size void 3973inline_size void
2775wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
2776{ 3975{
2777 while (*head) 3976 while (*head)
2778 { 3977 {
2779 if (expect_true (*head == elem)) 3978 if (ecb_expect_true (*head == elem))
2780 { 3979 {
2781 *head = elem->next; 3980 *head = elem->next;
2782 break; 3981 break;
2783 } 3982 }
2784 3983
… …
2796 w->pending = 0; 3995 w->pending = 0;
2797 } 3996 }
2798} 3997}
2799 3998
2800int 3999int
2801ev_clear_pending (EV_P_ void *w) 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2802{ 4001{
2803 W w_ = (W)w; 4002 W w_ = (W)w;
2804 int pending = w_->pending; 4003 int pending = w_->pending;
2805 4004
2806 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
2807 { 4006 {
2808 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2809 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
2810 w_->pending = 0; 4009 w_->pending = 0;
2811 return p->events; 4010 return p->events;
… …
2838 w->active = 0; 4037 w->active = 0;
2839} 4038}
2840 4039
2841/*****************************************************************************/ 4040/*****************************************************************************/
2842 4041
2843void noinline 4042ecb_noinline
4043void
2844ev_io_start (EV_P_ ev_io *w) 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2845{ 4045{
2846 int fd = w->fd; 4046 int fd = w->fd;
2847 4047
2848 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
2849 return; 4049 return;
2850 4050
2851 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2852 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2853 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
2854 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
2855 4058
2856 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2858 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
4062
4063 /* common bug, apparently */
4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2859 4065
2860 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4066 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2861 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
2862 4068
2863 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
2864} 4070}
2865 4071
2866void noinline 4072ecb_noinline
4073void
2867ev_io_stop (EV_P_ ev_io *w) 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2868{ 4075{
2869 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
2870 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
2871 return; 4078 return;
2872 4079
2873 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2874 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
2875 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2876 4086
2877 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
2878 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
2879 4089
2880 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2881 4091
2882 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
2883} 4093}
2884 4094
2885void noinline 4095ecb_noinline
4096void
2886ev_timer_start (EV_P_ ev_timer *w) 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2887{ 4098{
2888 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
2889 return; 4100 return;
2890 4101
2891 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
2892 4103
2893 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2894 4105
2895 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
2896 4107
2897 ++timercnt; 4108 ++timercnt;
2898 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2899 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2900 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
2901 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
2902 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
2903 4114
2904 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
2905 4116
2906 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2907} 4118}
2908 4119
2909void noinline 4120ecb_noinline
4121void
2910ev_timer_stop (EV_P_ ev_timer *w) 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2911{ 4123{
2912 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2913 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
2914 return; 4126 return;
2915 4127
2916 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
2917 4129
2918 { 4130 {
… …
2920 4132
2921 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2922 4134
2923 --timercnt; 4135 --timercnt;
2924 4136
2925 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
2926 { 4138 {
2927 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
2928 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
2929 } 4141 }
2930 } 4142 }
… …
2934 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
2935 4147
2936 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2937} 4149}
2938 4150
2939void noinline 4151ecb_noinline
4152void
2940ev_timer_again (EV_P_ ev_timer *w) 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2941{ 4154{
2942 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
4156
4157 clear_pending (EV_A_ (W)w);
2943 4158
2944 if (ev_is_active (w)) 4159 if (ev_is_active (w))
2945 { 4160 {
2946 if (w->repeat) 4161 if (w->repeat)
2947 { 4162 {
… …
2960 4175
2961 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
2962} 4177}
2963 4178
2964ev_tstamp 4179ev_tstamp
2965ev_timer_remaining (EV_P_ ev_timer *w) 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2966{ 4181{
2967 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2968} 4183}
2969 4184
2970#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
2971void noinline 4186ecb_noinline
4187void
2972ev_periodic_start (EV_P_ ev_periodic *w) 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2973{ 4189{
2974 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
2975 return; 4191 return;
2976 4192
2977 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
2978 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2979 else if (w->interval) 4195 else if (w->interval)
… …
2986 4202
2987 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
2988 4204
2989 ++periodiccnt; 4205 ++periodiccnt;
2990 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2991 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2992 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2993 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
2994 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
2995 4211
2996 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2997 4213
2998 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2999} 4215}
3000 4216
3001void noinline 4217ecb_noinline
4218void
3002ev_periodic_stop (EV_P_ ev_periodic *w) 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3003{ 4220{
3004 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
3005 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
3006 return; 4223 return;
3007 4224
3008 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3009 4226
3010 { 4227 {
… …
3012 4229
3013 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3014 4231
3015 --periodiccnt; 4232 --periodiccnt;
3016 4233
3017 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
3018 { 4235 {
3019 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
3020 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
3021 } 4238 }
3022 } 4239 }
… …
3024 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
3025 4242
3026 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
3027} 4244}
3028 4245
3029void noinline 4246ecb_noinline
4247void
3030ev_periodic_again (EV_P_ ev_periodic *w) 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3031{ 4249{
3032 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
3033 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
3034 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
3035} 4253}
… …
3039# define SA_RESTART 0 4257# define SA_RESTART 0
3040#endif 4258#endif
3041 4259
3042#if EV_SIGNAL_ENABLE 4260#if EV_SIGNAL_ENABLE
3043 4261
3044void noinline 4262ecb_noinline
4263void
3045ev_signal_start (EV_P_ ev_signal *w) 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3046{ 4265{
3047 if (expect_false (ev_is_active (w))) 4266 if (ecb_expect_false (ev_is_active (w)))
3048 return; 4267 return;
3049 4268
3050 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3051 4270
3052#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
3053 assert (("libev: a signal must not be attached to two different loops", 4272 assert (("libev: a signal must not be attached to two different loops",
3054 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3055 4274
3056 signals [w->signum - 1].loop = EV_A; 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
3057#endif 4277#endif
3058 4278
3059 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
3060 4280
3061#if EV_USE_SIGNALFD 4281#if EV_USE_SIGNALFD
… …
3120 } 4340 }
3121 4341
3122 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3123} 4343}
3124 4344
3125void noinline 4345ecb_noinline
4346void
3126ev_signal_stop (EV_P_ ev_signal *w) 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3127{ 4348{
3128 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
3129 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
3130 return; 4351 return;
3131 4352
3132 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3133 4354
3134 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3162#endif 4383#endif
3163 4384
3164#if EV_CHILD_ENABLE 4385#if EV_CHILD_ENABLE
3165 4386
3166void 4387void
3167ev_child_start (EV_P_ ev_child *w) 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3168{ 4389{
3169#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
3170 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3171#endif 4392#endif
3172 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
3173 return; 4394 return;
3174 4395
3175 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
3176 4397
3177 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
… …
3179 4400
3180 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3181} 4402}
3182 4403
3183void 4404void
3184ev_child_stop (EV_P_ ev_child *w) 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3185{ 4406{
3186 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3187 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
3188 return; 4409 return;
3189 4410
3190 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3191 4412
3192 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3206 4427
3207#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
3208#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3209#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
3210 4431
3211static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3212 4433
3213#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
3214 4435
3215/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4436/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3217 4438
3218static void noinline 4439ecb_noinline
4440static void
3219infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
3220{ 4442{
3221 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
3222 4447
3223 if (w->wd >= 0) 4448 if (w->wd >= 0)
3224 { 4449 {
3225 struct statfs sfs; 4450 struct statfs sfs;
3226 4451
… …
3230 4455
3231 if (!fs_2625) 4456 if (!fs_2625)
3232 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3233 else if (!statfs (w->path, &sfs) 4458 else if (!statfs (w->path, &sfs)
3234 && (sfs.f_type == 0x1373 /* devfs */ 4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
3235 || sfs.f_type == 0xEF53 /* ext2/3 */ 4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
3236 || sfs.f_type == 0x3153464a /* jfs */ 4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
3237 || sfs.f_type == 0x52654973 /* reiser3 */ 4468 || sfs.f_type == 0x52654973 /* reiser3 */
3238 || sfs.f_type == 0x01021994 /* tempfs */ 4469 || sfs.f_type == 0x01021994 /* tmpfs */
3239 || sfs.f_type == 0x58465342 /* xfs */)) 4470 || sfs.f_type == 0x58465342 /* xfs */))
3240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3241 else 4472 else
3242 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3243 } 4474 }
… …
3278 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3279 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
3280 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3281} 4512}
3282 4513
3283static void noinline 4514ecb_noinline
4515static void
3284infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
3285{ 4517{
3286 int slot; 4518 int slot;
3287 int wd = w->wd; 4519 int wd = w->wd;
3288 4520
… …
3295 4527
3296 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
3297 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
3298} 4530}
3299 4531
3300static void noinline 4532ecb_noinline
4533static void
3301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3302{ 4535{
3303 if (slot < 0) 4536 if (slot < 0)
3304 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
3305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3341 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3342 ofs += sizeof (struct inotify_event) + ev->len; 4575 ofs += sizeof (struct inotify_event) + ev->len;
3343 } 4576 }
3344} 4577}
3345 4578
3346inline_size void ecb_cold 4579inline_size ecb_cold
4580void
3347ev_check_2625 (EV_P) 4581ev_check_2625 (EV_P)
3348{ 4582{
3349 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
3350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3351 */ 4585 */
… …
3356} 4590}
3357 4591
3358inline_size int 4592inline_size int
3359infy_newfd (void) 4593infy_newfd (void)
3360{ 4594{
3361#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4595#if defined IN_CLOEXEC && defined IN_NONBLOCK
3362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4596 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3363 if (fd >= 0) 4597 if (fd >= 0)
3364 return fd; 4598 return fd;
3365#endif 4599#endif
3366 return inotify_init (); 4600 return inotify_init ();
… …
3441#else 4675#else
3442# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
3443#endif 4677#endif
3444 4678
3445void 4679void
3446ev_stat_stat (EV_P_ ev_stat *w) 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3447{ 4681{
3448 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
3449 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
3450 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
3451 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
3452} 4686}
3453 4687
3454static void noinline 4688ecb_noinline
4689static void
3455stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3456{ 4691{
3457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3458 4693
3459 ev_statdata prev = w->attr; 4694 ev_statdata prev = w->attr;
… …
3490 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
3491 } 4726 }
3492} 4727}
3493 4728
3494void 4729void
3495ev_stat_start (EV_P_ ev_stat *w) 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3496{ 4731{
3497 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
3498 return; 4733 return;
3499 4734
3500 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
3501 4736
3502 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3521 4756
3522 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3523} 4758}
3524 4759
3525void 4760void
3526ev_stat_stop (EV_P_ ev_stat *w) 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3527{ 4762{
3528 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
3530 return; 4765 return;
3531 4766
3532 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
3533 4768
3534#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
… …
3547} 4782}
3548#endif 4783#endif
3549 4784
3550#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
3551void 4786void
3552ev_idle_start (EV_P_ ev_idle *w) 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3553{ 4788{
3554 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
3555 return; 4790 return;
3556 4791
3557 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
3558 4793
3559 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
3562 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
3563 4798
3564 ++idleall; 4799 ++idleall;
3565 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
3566 4801
3567 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3568 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
3569 } 4804 }
3570 4805
3571 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
3572} 4807}
3573 4808
3574void 4809void
3575ev_idle_stop (EV_P_ ev_idle *w) 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3576{ 4811{
3577 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
3579 return; 4814 return;
3580 4815
3581 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3582 4817
3583 { 4818 {
… …
3594} 4829}
3595#endif 4830#endif
3596 4831
3597#if EV_PREPARE_ENABLE 4832#if EV_PREPARE_ENABLE
3598void 4833void
3599ev_prepare_start (EV_P_ ev_prepare *w) 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3600{ 4835{
3601 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
3602 return; 4837 return;
3603 4838
3604 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
3605 4840
3606 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
3607 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3608 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
3609 4844
3610 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
3611} 4846}
3612 4847
3613void 4848void
3614ev_prepare_stop (EV_P_ ev_prepare *w) 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3615{ 4850{
3616 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
3617 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
3618 return; 4853 return;
3619 4854
3620 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
3621 4856
3622 { 4857 {
… …
3632} 4867}
3633#endif 4868#endif
3634 4869
3635#if EV_CHECK_ENABLE 4870#if EV_CHECK_ENABLE
3636void 4871void
3637ev_check_start (EV_P_ ev_check *w) 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3638{ 4873{
3639 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
3640 return; 4875 return;
3641 4876
3642 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
3643 4878
3644 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
3645 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3646 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
3647 4882
3648 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3649} 4884}
3650 4885
3651void 4886void
3652ev_check_stop (EV_P_ ev_check *w) 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3653{ 4888{
3654 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
3655 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
3656 return; 4891 return;
3657 4892
3658 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
3659 4894
3660 { 4895 {
… …
3669 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
3670} 4905}
3671#endif 4906#endif
3672 4907
3673#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
3674void noinline 4909ecb_noinline
4910void
3675ev_embed_sweep (EV_P_ ev_embed *w) 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3676{ 4912{
3677 ev_run (w->other, EVRUN_NOWAIT); 4913 ev_run (w->other, EVRUN_NOWAIT);
3678} 4914}
3679 4915
3680static void 4916static void
… …
3728 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
3729} 4965}
3730#endif 4966#endif
3731 4967
3732void 4968void
3733ev_embed_start (EV_P_ ev_embed *w) 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3734{ 4970{
3735 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
3736 return; 4972 return;
3737 4973
3738 { 4974 {
3739 EV_P = w->other; 4975 EV_P = w->other;
3740 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3759 4995
3760 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3761} 4997}
3762 4998
3763void 4999void
3764ev_embed_stop (EV_P_ ev_embed *w) 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3765{ 5001{
3766 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
3767 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
3768 return; 5004 return;
3769 5005
3770 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
3771 5007
3772 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
… …
3779} 5015}
3780#endif 5016#endif
3781 5017
3782#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
3783void 5019void
3784ev_fork_start (EV_P_ ev_fork *w) 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3785{ 5021{
3786 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
3787 return; 5023 return;
3788 5024
3789 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3790 5026
3791 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
3792 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3793 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
3794 5030
3795 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3796} 5032}
3797 5033
3798void 5034void
3799ev_fork_stop (EV_P_ ev_fork *w) 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3800{ 5036{
3801 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
3802 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
3803 return; 5039 return;
3804 5040
3805 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
3806 5042
3807 { 5043 {
… …
3817} 5053}
3818#endif 5054#endif
3819 5055
3820#if EV_CLEANUP_ENABLE 5056#if EV_CLEANUP_ENABLE
3821void 5057void
3822ev_cleanup_start (EV_P_ ev_cleanup *w) 5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3823{ 5059{
3824 if (expect_false (ev_is_active (w))) 5060 if (ecb_expect_false (ev_is_active (w)))
3825 return; 5061 return;
3826 5062
3827 EV_FREQUENT_CHECK; 5063 EV_FREQUENT_CHECK;
3828 5064
3829 ev_start (EV_A_ (W)w, ++cleanupcnt); 5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
3830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3831 cleanups [cleanupcnt - 1] = w; 5067 cleanups [cleanupcnt - 1] = w;
3832 5068
3833 /* cleanup watchers should never keep a refcount on the loop */ 5069 /* cleanup watchers should never keep a refcount on the loop */
3834 ev_unref (EV_A); 5070 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
3836} 5072}
3837 5073
3838void 5074void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w) 5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3840{ 5076{
3841 clear_pending (EV_A_ (W)w); 5077 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w))) 5078 if (ecb_expect_false (!ev_is_active (w)))
3843 return; 5079 return;
3844 5080
3845 EV_FREQUENT_CHECK; 5081 EV_FREQUENT_CHECK;
3846 ev_ref (EV_A); 5082 ev_ref (EV_A);
3847 5083
… …
3858} 5094}
3859#endif 5095#endif
3860 5096
3861#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
3862void 5098void
3863ev_async_start (EV_P_ ev_async *w) 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3864{ 5100{
3865 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
3866 return; 5102 return;
3867 5103
3868 w->sent = 0; 5104 w->sent = 0;
3869 5105
3870 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
3871 5107
3872 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
3873 5109
3874 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
3875 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3876 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
3877 5113
3878 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
3879} 5115}
3880 5116
3881void 5117void
3882ev_async_stop (EV_P_ ev_async *w) 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3883{ 5119{
3884 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
3885 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
3886 return; 5122 return;
3887 5123
3888 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3889 5125
3890 { 5126 {
… …
3898 5134
3899 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
3900} 5136}
3901 5137
3902void 5138void
3903ev_async_send (EV_P_ ev_async *w) 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3904{ 5140{
3905 w->sent = 1; 5141 w->sent = 1;
3906 evpipe_write (EV_A_ &async_pending); 5142 evpipe_write (EV_A_ &async_pending);
3907} 5143}
3908#endif 5144#endif
… …
3945 5181
3946 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3947} 5183}
3948 5184
3949void 5185void
3950ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3951{ 5187{
3952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3953
3954 if (expect_false (!once))
3955 {
3956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3957 return;
3958 }
3959 5189
3960 once->cb = cb; 5190 once->cb = cb;
3961 once->arg = arg; 5191 once->arg = arg;
3962 5192
3963 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
3976} 5206}
3977 5207
3978/*****************************************************************************/ 5208/*****************************************************************************/
3979 5209
3980#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
3981void ecb_cold 5211ecb_cold
5212void
3982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3983{ 5214{
3984 int i, j; 5215 int i, j;
3985 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
3986 5217
3987 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))
… …
4030 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5261 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4031#endif 5262#endif
4032 5263
4033#if EV_IDLE_ENABLE 5264#if EV_IDLE_ENABLE
4034 if (types & EV_IDLE) 5265 if (types & EV_IDLE)
4035 for (j = NUMPRI; i--; ) 5266 for (j = NUMPRI; j--; )
4036 for (i = idlecnt [j]; i--; ) 5267 for (i = idlecnt [j]; i--; )
4037 cb (EV_A_ EV_IDLE, idles [j][i]); 5268 cb (EV_A_ EV_IDLE, idles [j][i]);
4038#endif 5269#endif
4039 5270
4040#if EV_FORK_ENABLE 5271#if EV_FORK_ENABLE
… …
4093 5324
4094#if EV_MULTIPLICITY 5325#if EV_MULTIPLICITY
4095 #include "ev_wrap.h" 5326 #include "ev_wrap.h"
4096#endif 5327#endif
4097 5328
4098EV_CPP(})
4099

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