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Comparing libev/ev.c (file contents):
Revision 1.383 by root, Wed Jul 20 00:40:14 2011 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 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#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#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) 551#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) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
468 555
469/* the following are taken from libecb */ 556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
611 #if __GNUC__
612 typedef signed long long int64_t;
613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
627#else
628 #include <inttypes.h>
629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
630 #define ECB_PTRSIZE 8
631 #else
632 #define ECB_PTRSIZE 4
633 #endif
634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
645 #endif
646#endif
471 647
472/* many compilers define _GNUC_ to some versions but then only implement 648/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 649 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 651 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 652 * 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. 653 * an issue with that they should have done it right in the first place.
478 */ 654 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
482 #else 657#else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
484 #endif 777 #endif
485#endif 778#endif
486 779
487#if __cplusplus 780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
488 #define ecb_inline static inline 866 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
491#elif ECB_C99 869#elif ECB_C99
492 #define ecb_inline static inline 870 #define ecb_inline static inline
493#else 871#else
494 #define ecb_inline static 872 #define ecb_inline static
495#endif 873#endif
496 874
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
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1) 875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
537 #define ecb_attribute(attrlist) __attribute__(attrlist) 894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr) 900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else 917#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality) 918 #define ecb_prefetch(addr,rw,locality)
546#endif 919#endif
547 920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
548#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__)) 948#endif
949
550#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__)) 952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
553 965
554#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__)) 967 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__)) 968 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__)) 969 #define ecb_cold ecb_attribute ((__cold__))
… …
564/* put around conditional expressions if you are very sure that the */ 976/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */ 977/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */ 978/* booleans, not the expression. */
567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */ 981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
570 984
571#define expect_false(cond) ecb_expect_false (cond) 985/* count trailing zero bits and count # of one bits */
572#define expect_true(cond) ecb_expect_true (cond) 986#if ECB_GCC_VERSION(3,4) \
573#define noinline ecb_noinline 987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
574 1592
575#define inline_size ecb_inline 1593#define inline_size ecb_inline
576 1594
577#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
578# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
579#else 1597#else
580# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
581#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
582 1666
583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
584 1668
585#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
586# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
587#else 1671#else
588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif 1673#endif
590 1674
591#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
592#define EMPTY2(a,b) /* used to suppress some warnings */
593 1676
594typedef ev_watcher *W; 1677typedef ev_watcher *W;
595typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
596typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
597 1680
… …
622# include "ev_win32.c" 1705# include "ev_win32.c"
623#endif 1706#endif
624 1707
625/*****************************************************************************/ 1708/*****************************************************************************/
626 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
627/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
628 1715
629#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
630# include <math.h> 1717# include <math.h>
631# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
632#else 1719#else
633 1720
634#include <float.h> 1721#include <float.h>
635 1722
636/* a floor() replacement function, should be independent of ev_tstamp type */ 1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
637static ev_tstamp noinline 1725static ev_tstamp
638ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
639{ 1727{
640 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else 1731#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif 1733#endif
646 1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
647 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
648 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
649 { 1745 {
650 ev_tstamp f; 1746 ev_tstamp f;
651 1747
652 if (v == v - 1.) 1748 if (v == v - 1.)
653 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
654 1750
655 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
657 } 1753 }
658 1754
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */ 1755 /* fits into an unsigned long */
668 return (unsigned long)v; 1756 return (unsigned long)v;
669} 1757}
670 1758
671#endif 1759#endif
… …
674 1762
675#ifdef __linux 1763#ifdef __linux
676# include <sys/utsname.h> 1764# include <sys/utsname.h>
677#endif 1765#endif
678 1766
679static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
680ev_linux_version (void) 1769ev_linux_version (void)
681{ 1770{
682#ifdef __linux 1771#ifdef __linux
683 unsigned int v = 0; 1772 unsigned int v = 0;
684 struct utsname buf; 1773 struct utsname buf;
… …
713} 1802}
714 1803
715/*****************************************************************************/ 1804/*****************************************************************************/
716 1805
717#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
718static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
719ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
720{ 1810{
721 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
722} 1812}
723#endif 1813#endif
724 1814
725static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
726 1816
727void ecb_cold 1817ecb_cold
1818void
728ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
729{ 1820{
730 syserr_cb = cb; 1821 syserr_cb = cb;
731} 1822}
732 1823
733static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
734ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
735{ 1827{
736 if (!msg) 1828 if (!msg)
737 msg = "(libev) system error"; 1829 msg = "(libev) system error";
738 1830
… …
751 abort (); 1843 abort ();
752 } 1844 }
753} 1845}
754 1846
755static void * 1847static void *
756ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
757{ 1849{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
761 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
762 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
763 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
764 */ 1855 */
765 1856
766 if (size) 1857 if (size)
767 return realloc (ptr, size); 1858 return realloc (ptr, size);
768 1859
769 free (ptr); 1860 free (ptr);
770 return 0; 1861 return 0;
771#endif
772} 1862}
773 1863
774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
775 1865
776void ecb_cold 1866ecb_cold
1867void
777ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
778{ 1869{
779 alloc = cb; 1870 alloc = cb;
780} 1871}
781 1872
782inline_speed void * 1873inline_speed void *
… …
809typedef struct 1900typedef struct
810{ 1901{
811 WL head; 1902 WL head;
812 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
815 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
816#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
817 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
818#endif 1909#endif
819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
820 SOCKET handle; 1911 SOCKET handle;
… …
870 #undef VAR 1961 #undef VAR
871 }; 1962 };
872 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
873 1964
874 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
875 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
876 1967
877#else 1968#else
878 1969
879 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
880 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
881 #include "ev_vars.h" 1972 #include "ev_vars.h"
882 #undef VAR 1973 #undef VAR
883 1974
884 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
885 1976
886#endif 1977#endif
887 1978
888#if EV_FEATURE_API 1979#if EV_FEATURE_API
889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
891# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
892#else 1983#else
893# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
899 1990
900/*****************************************************************************/ 1991/*****************************************************************************/
901 1992
902#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
903ev_tstamp 1994ev_tstamp
904ev_time (void) 1995ev_time (void) EV_NOEXCEPT
905{ 1996{
906#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
907 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
908 { 1999 {
909 struct timespec ts; 2000 struct timespec ts;
910 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
911 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
912 } 2003 }
913#endif 2004#endif
914 2005
915 struct timeval tv; 2006 struct timeval tv;
916 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
917 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
918} 2009}
919#endif 2010#endif
920 2011
921inline_size ev_tstamp 2012inline_size ev_tstamp
922get_clock (void) 2013get_clock (void)
923{ 2014{
924#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
925 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
926 { 2017 {
927 struct timespec ts; 2018 struct timespec ts;
928 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
929 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
930 } 2021 }
931#endif 2022#endif
932 2023
933 return ev_time (); 2024 return ev_time ();
934} 2025}
935 2026
936#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
937ev_tstamp 2028ev_tstamp
938ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
939{ 2030{
940 return ev_rt_now; 2031 return ev_rt_now;
941} 2032}
942#endif 2033#endif
943 2034
944void 2035void
945ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
946{ 2037{
947 if (delay > 0.) 2038 if (delay > 0.)
948 { 2039 {
949#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
950 struct timespec ts; 2041 struct timespec ts;
951 2042
952 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
953 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
954#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
955 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
956#else 2049#else
957 struct timeval tv; 2050 struct timeval tv;
958 2051
959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
960 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
978 2071
979 do 2072 do
980 ncur <<= 1; 2073 ncur <<= 1;
981 while (cnt > ncur); 2074 while (cnt > ncur);
982 2075
983 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
984 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
985 { 2078 {
986 ncur *= elem; 2079 ncur *= elem;
987 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
988 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
990 } 2083 }
991 2084
992 return ncur; 2085 return ncur;
993} 2086}
994 2087
995static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
996array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
997{ 2091{
998 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
999 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
1000} 2094}
1001 2095
2096#define array_needsize_noinit(base,offset,count)
2097
1002#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
1003 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1004 2100
1005#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
1006 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
1007 { \ 2103 { \
1008 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
1009 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
1010 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
1011 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
1012 } 2108 }
1013 2109
1014#if 0 2110#if 0
1015#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
1016 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1025 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1026 2122
1027/*****************************************************************************/ 2123/*****************************************************************************/
1028 2124
1029/* dummy callback for pending events */ 2125/* dummy callback for pending events */
1030static void noinline 2126ecb_noinline
2127static void
1031pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
1032{ 2129{
1033} 2130}
1034 2131
1035void noinline 2132ecb_noinline
2133void
1036ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1037{ 2135{
1038 W w_ = (W)w; 2136 W w_ = (W)w;
1039 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1040 2138
1041 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1042 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1043 else 2141 else
1044 { 2142 {
1045 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1046 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1047 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1048 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1049 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
1050} 2150}
1051 2151
1052inline_speed void 2152inline_speed void
1053feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1054{ 2154{
1055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1056 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1057} 2157}
1058 2158
1059inline_size void 2159inline_size void
1060feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
1095inline_speed void 2195inline_speed void
1096fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1097{ 2197{
1098 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1099 2199
1100 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1102} 2202}
1103 2203
1104void 2204void
1105ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1106{ 2206{
1107 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1108 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1109} 2209}
1110 2210
… …
1147 ev_io *w; 2247 ev_io *w;
1148 2248
1149 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1151 2251
1152 anfd->reify = 0; 2252 anfd->reify = 0;
1153 2253
1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1155 { 2255 {
1156 anfd->events = 0; 2256 anfd->events = 0;
1157 2257
1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1159 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1168 2268
1169 fdchangecnt = 0; 2269 fdchangecnt = 0;
1170} 2270}
1171 2271
1172/* something about the given fd changed */ 2272/* something about the given fd changed */
1173inline_size void 2273inline_size
2274void
1174fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1175{ 2276{
1176 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1177 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1178 2279
1179 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1180 { 2281 {
1181 ++fdchangecnt; 2282 ++fdchangecnt;
1182 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1183 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1184 } 2285 }
1185} 2286}
1186 2287
1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1188inline_speed void ecb_cold 2289inline_speed ecb_cold void
1189fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1190{ 2291{
1191 ev_io *w; 2292 ev_io *w;
1192 2293
1193 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1197 } 2298 }
1198} 2299}
1199 2300
1200/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1201inline_size int ecb_cold 2302inline_size ecb_cold int
1202fd_valid (int fd) 2303fd_valid (int fd)
1203{ 2304{
1204#ifdef _WIN32 2305#ifdef _WIN32
1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1206#else 2307#else
1207 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1208#endif 2309#endif
1209} 2310}
1210 2311
1211/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1212static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1213fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1214{ 2316{
1215 int fd; 2317 int fd;
1216 2318
1217 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1219 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1220 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1221} 2323}
1222 2324
1223/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1224static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1225fd_enomem (EV_P) 2328fd_enomem (EV_P)
1226{ 2329{
1227 int fd; 2330 int fd;
1228 2331
1229 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1233 break; 2336 break;
1234 } 2337 }
1235} 2338}
1236 2339
1237/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1238static void noinline 2341ecb_noinline
2342static void
1239fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1240{ 2344{
1241 int fd; 2345 int fd;
1242 2346
1243 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1296 ev_tstamp minat; 2400 ev_tstamp minat;
1297 ANHE *minpos; 2401 ANHE *minpos;
1298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1299 2403
1300 /* find minimum child */ 2404 /* find minimum child */
1301 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1302 { 2406 {
1303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1307 } 2411 }
1308 else if (pos < E) 2412 else if (pos < E)
1309 { 2413 {
1310 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1311 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1312 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1313 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1314 } 2418 }
1315 else 2419 else
1316 break; 2420 break;
1317 2421
1318 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1326 2430
1327 heap [k] = he; 2431 heap [k] = he;
1328 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1329} 2433}
1330 2434
1331#else /* 4HEAP */ 2435#else /* not 4HEAP */
1332 2436
1333#define HEAP0 1 2437#define HEAP0 1
1334#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1335#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1336 2440
… …
1424 2528
1425/*****************************************************************************/ 2529/*****************************************************************************/
1426 2530
1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1428 2532
1429static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
1430evpipe_init (EV_P) 2535evpipe_init (EV_P)
1431{ 2536{
1432 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1433 { 2538 {
2539 int fds [2];
2540
1434# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1437 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1438 2546
1439 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1440 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1441 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1442 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1443 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1444 } 2608 }
1445 else 2609 else
1446# endif 2610#endif
1447 { 2611 {
1448 while (pipe (evpipe)) 2612#ifdef _WIN32
1449 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1450 2614 DWORD sent;
1451 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1452 fd_intern (evpipe [1]); 2616 buf.len = 1;
1453 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1454 } 2618#else
1455
1456 ev_io_start (EV_A_ &pipe_w);
1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1458 }
1459}
1460
1461inline_speed void
1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1463{
1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE;
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE;
1474
1475 if (pipe_write_wanted)
1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* optimisation only */
1480
1481 old_errno = errno; /* save errno because write will clobber it */
1482
1483#if EV_USE_EVENTFD
1484 if (evfd >= 0)
1485 {
1486 uint64_t counter = 1;
1487 write (evfd, &counter, sizeof (uint64_t));
1488 }
1489 else
1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1497 write (evpipe [1], &(evpipe [1]), 1); 2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1498 } 2621 }
1499 2622
1500 errno = old_errno; 2623 errno = old_errno;
1501 } 2624 }
1502} 2625}
… …
1509 int i; 2632 int i;
1510 2633
1511 if (revents & EV_READ) 2634 if (revents & EV_READ)
1512 { 2635 {
1513#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1514 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1515 { 2638 {
1516 uint64_t counter; 2639 uint64_t counter;
1517 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1518 } 2641 }
1519 else 2642 else
1520#endif 2643#endif
1521 { 2644 {
1522 char dummy; 2645 char dummy[4];
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1524 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
1525 } 2656 }
1526 } 2657 }
1527 2658
1528 pipe_write_skipped = 0; 2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1529 2662
1530#if EV_SIGNAL_ENABLE 2663#if EV_SIGNAL_ENABLE
1531 if (sig_pending) 2664 if (sig_pending)
1532 { 2665 {
1533 sig_pending = 0; 2666 sig_pending = 0;
1534 2667
2668 ECB_MEMORY_FENCE;
2669
1535 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1536 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1537 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1538 } 2673 }
1539#endif 2674#endif
1540 2675
1541#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1542 if (async_pending) 2677 if (async_pending)
1543 { 2678 {
1544 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1545 2682
1546 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1547 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1548 { 2685 {
1549 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1550 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1551 } 2689 }
1552 } 2690 }
1553#endif 2691#endif
1554} 2692}
1555 2693
1556/*****************************************************************************/ 2694/*****************************************************************************/
1557 2695
1558void 2696void
1559ev_feed_signal (int signum) 2697ev_feed_signal (int signum) EV_NOEXCEPT
1560{ 2698{
1561#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
1562 EV_P = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
1563 2703
1564 if (!EV_A) 2704 if (!EV_A)
1565 return; 2705 return;
1566#endif 2706#endif
1567 2707
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1; 2708 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending); 2709 evpipe_write (EV_A_ &sig_pending);
1573} 2710}
1574 2711
1575static void 2712static void
… …
1580#endif 2717#endif
1581 2718
1582 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
1583} 2720}
1584 2721
1585void noinline 2722ecb_noinline
2723void
1586ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1587{ 2725{
1588 WL w; 2726 WL w;
1589 2727
1590 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1591 return; 2729 return;
1592 2730
1593 --signum; 2731 --signum;
1594 2732
1595#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1596 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1597 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1598 2736
1599 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1600 return; 2738 return;
1601#endif 2739#endif
1602 2740
1603 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1604 2743
1605 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1607} 2746}
1608 2747
… …
1699# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1700#endif 2839#endif
1701#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1702# include "ev_epoll.c" 2841# include "ev_epoll.c"
1703#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1704#if EV_USE_POLL 2849#if EV_USE_POLL
1705# include "ev_poll.c" 2850# include "ev_poll.c"
1706#endif 2851#endif
1707#if EV_USE_SELECT 2852#if EV_USE_SELECT
1708# include "ev_select.c" 2853# include "ev_select.c"
1709#endif 2854#endif
1710 2855
1711int ecb_cold 2856ecb_cold int
1712ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1713{ 2858{
1714 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1715} 2860}
1716 2861
1717int ecb_cold 2862ecb_cold int
1718ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1719{ 2864{
1720 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1721} 2866}
1722 2867
1723/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1724int inline_size ecb_cold 2869inline_size ecb_cold int
1725enable_secure (void) 2870enable_secure (void)
1726{ 2871{
1727#ifdef _WIN32 2872#ifdef _WIN32
1728 return 0; 2873 return 0;
1729#else 2874#else
1730 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1731 || getgid () != getegid (); 2876 || getgid () != getegid ();
1732#endif 2877#endif
1733} 2878}
1734 2879
1735unsigned int ecb_cold 2880ecb_cold
2881unsigned int
1736ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1737{ 2883{
1738 unsigned int flags = 0; 2884 unsigned int flags = 0;
1739 2885
1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1741 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1742 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1743 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1745 2893
1746 return flags; 2894 return flags;
1747} 2895}
1748 2896
1749unsigned int ecb_cold 2897ecb_cold
2898unsigned int
1750ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1751{ 2900{
1752 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1753 2902
1754#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1755 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1763#endif 2912#endif
1764#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif 2915#endif
1767 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
1768 return flags; 2926 return flags;
1769} 2927}
1770 2928
1771unsigned int ecb_cold 2929ecb_cold
2930unsigned int
1772ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1773{ 2932{
1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1775 2934
1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1778 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
1779 2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
2945
1780 return flags; 2946 return flags;
1781} 2947}
1782 2948
1783unsigned int 2949unsigned int
1784ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1785{ 2951{
1786 return backend; 2952 return backend;
1787} 2953}
1788 2954
1789#if EV_FEATURE_API 2955#if EV_FEATURE_API
1790unsigned int 2956unsigned int
1791ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1792{ 2958{
1793 return loop_count; 2959 return loop_count;
1794} 2960}
1795 2961
1796unsigned int 2962unsigned int
1797ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1798{ 2964{
1799 return loop_depth; 2965 return loop_depth;
1800} 2966}
1801 2967
1802void 2968void
1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1804{ 2970{
1805 io_blocktime = interval; 2971 io_blocktime = interval;
1806} 2972}
1807 2973
1808void 2974void
1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1810{ 2976{
1811 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1812} 2978}
1813 2979
1814void 2980void
1815ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1816{ 2982{
1817 userdata = data; 2983 userdata = data;
1818} 2984}
1819 2985
1820void * 2986void *
1821ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1822{ 2988{
1823 return userdata; 2989 return userdata;
1824} 2990}
1825 2991
1826void 2992void
1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1828{ 2994{
1829 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1830} 2996}
1831 2997
1832void 2998void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1834{ 3000{
1835 release_cb = release; 3001 release_cb = release;
1836 acquire_cb = acquire; 3002 acquire_cb = acquire;
1837} 3003}
1838#endif 3004#endif
1839 3005
1840/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1841static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
1842loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1843{ 3010{
1844 if (!backend) 3011 if (!backend)
1845 { 3012 {
1846 origflags = flags; 3013 origflags = flags;
1847 3014
… …
1892#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1893 async_pending = 0; 3060 async_pending = 0;
1894#endif 3061#endif
1895 pipe_write_skipped = 0; 3062 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0; 3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1897#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif 3068#endif
1900#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1903 3072
1904 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
1905 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1906 3075
1907#if EV_USE_IOCP 3076#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif 3078#endif
1910#if EV_USE_PORT 3079#if EV_USE_PORT
1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1912#endif 3081#endif
1913#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1915#endif 3090#endif
1916#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1917 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1918#endif 3093#endif
1919#if EV_USE_POLL 3094#if EV_USE_POLL
1920 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1921#endif 3096#endif
1922#if EV_USE_SELECT 3097#if EV_USE_SELECT
1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1924#endif 3099#endif
1925 3100
1926 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1927 3102
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1931#endif 3106#endif
1932 } 3107 }
1933} 3108}
1934 3109
1935/* free up a loop structure */ 3110/* free up a loop structure */
1936void ecb_cold 3111ecb_cold
3112void
1937ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1938{ 3114{
1939 int i; 3115 int i;
1940 3116
1941#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
… …
1944 return; 3120 return;
1945#endif 3121#endif
1946 3122
1947#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
1950 { 3126 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
1953 } 3129 }
1954#endif 3130#endif
1955 3131
1956#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1958 { 3134 {
1959 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
1961 } 3137 }
1962#endif 3138#endif
… …
1964 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1965 { 3141 {
1966 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1967 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1968 3144
1969#if EV_USE_EVENTFD
1970 if (evfd >= 0)
1971 close (evfd);
1972#endif
1973
1974 if (evpipe [0] >= 0)
1975 {
1976 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1977 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1978 }
1979 } 3147 }
1980 3148
1981#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1983 close (sigfd); 3151 close (sigfd);
… …
1990 3158
1991 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1992 close (backend_fd); 3160 close (backend_fd);
1993 3161
1994#if EV_USE_IOCP 3162#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif 3164#endif
1997#if EV_USE_PORT 3165#if EV_USE_PORT
1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1999#endif 3167#endif
2000#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2002#endif 3176#endif
2003#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
2004 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2005#endif 3179#endif
2006#if EV_USE_POLL 3180#if EV_USE_POLL
2007 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2008#endif 3182#endif
2009#if EV_USE_SELECT 3183#if EV_USE_SELECT
2010 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2011#endif 3185#endif
2012 3186
2013 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
2014 { 3188 {
2015 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
2057 3231
2058inline_size void 3232inline_size void
2059loop_fork (EV_P) 3233loop_fork (EV_P)
2060{ 3234{
2061#if EV_USE_PORT 3235#if EV_USE_PORT
2062 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2063#endif 3237#endif
2064#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2065 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2066#endif 3246#endif
2067#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2068 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2069#endif 3249#endif
2070#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2071 infy_fork (EV_A); 3251 infy_fork (EV_A);
2072#endif 3252#endif
2073 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2074 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2075 { 3256 {
2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2077 3258
2078 ev_ref (EV_A); 3259 ev_ref (EV_A);
2079 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2080 3261
2081#if EV_USE_EVENTFD
2082 if (evfd >= 0)
2083 close (evfd);
2084#endif
2085
2086 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
2087 {
2088 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
2089 EV_WIN32_CLOSE_FD (evpipe [1]);
2090 }
2091 3264
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2093 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
2094 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
2095 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2096#endif
2097 } 3268 }
3269#endif
2098 3270
2099 postfork = 0; 3271 postfork = 0;
2100} 3272}
2101 3273
2102#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2103 3275
3276ecb_cold
2104struct ev_loop * ecb_cold 3277struct ev_loop *
2105ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2106{ 3279{
2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2108 3281
2109 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2110 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
2117} 3290}
2118 3291
2119#endif /* multiplicity */ 3292#endif /* multiplicity */
2120 3293
2121#if EV_VERIFY 3294#if EV_VERIFY
2122static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2123verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2124{ 3298{
2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2126 3300
2127 if (w->pending) 3301 if (w->pending)
2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2129} 3303}
2130 3304
2131static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2132verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2133{ 3308{
2134 int i; 3309 int i;
2135 3310
2136 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2141 3316
2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2143 } 3318 }
2144} 3319}
2145 3320
2146static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2147array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2148{ 3324{
2149 while (cnt--) 3325 while (cnt--)
2150 { 3326 {
2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2154} 3330}
2155#endif 3331#endif
2156 3332
2157#if EV_FEATURE_API 3333#if EV_FEATURE_API
2158void ecb_cold 3334void ecb_cold
2159ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
2160{ 3336{
2161#if EV_VERIFY 3337#if EV_VERIFY
2162 int i; 3338 int i;
2163 WL w; 3339 WL w, w2;
2164 3340
2165 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
2166 3342
2167 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
2168 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
2169 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2170 3346
2171 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
2172 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
2173 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
2174 { 3353 {
2175 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
2176 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2177 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2178 } 3364 }
3365 }
2179 3366
2180 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
2181 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
2182 3369
2183#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2229#endif 3416#endif
2230} 3417}
2231#endif 3418#endif
2232 3419
2233#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2234struct ev_loop * ecb_cold 3422struct ev_loop *
2235#else 3423#else
2236int 3424int
2237#endif 3425#endif
2238ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2239{ 3427{
2240 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2241 { 3429 {
2242#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2243 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2262 3450
2263 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2264} 3452}
2265 3453
2266void 3454void
2267ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2268{ 3456{
2269 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2270} 3458}
2271 3459
2272/*****************************************************************************/ 3460/*****************************************************************************/
2273 3461
2274void 3462void
… …
2276{ 3464{
2277 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2278} 3466}
2279 3467
2280unsigned int 3468unsigned int
2281ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2282{ 3470{
2283 int pri; 3471 int pri;
2284 unsigned int count = 0; 3472 unsigned int count = 0;
2285 3473
2286 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2288 3476
2289 return count; 3477 return count;
2290} 3478}
2291 3479
2292void noinline 3480ecb_noinline
3481void
2293ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2294{ 3483{
2295 int pri; 3484 pendingpri = NUMPRI;
2296 3485
2297 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2298 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2299 { 3492 {
2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2301 3494
2302 p->w->pending = 0; 3495 p->w->pending = 0;
2303 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2304 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2305 } 3498 }
3499 }
3500 while (pendingpri);
2306} 3501}
2307 3502
2308#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2309/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2310/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2311inline_size void 3506inline_size void
2312idle_reify (EV_P) 3507idle_reify (EV_P)
2313{ 3508{
2314 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2315 { 3510 {
2316 int pri; 3511 int pri;
2317 3512
2318 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2319 { 3514 {
… …
2368 } 3563 }
2369} 3564}
2370 3565
2371#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
2372 3567
2373static void noinline 3568ecb_noinline
3569static void
2374periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
2375{ 3571{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378 3574
… …
2380 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
2381 { 3577 {
2382 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
2383 3579
2384 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
2386 { 3582 {
2387 at = ev_rt_now; 3583 at = ev_rt_now;
2388 break; 3584 break;
2389 } 3585 }
2390 3586
… …
2400{ 3596{
2401 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2402 3598
2403 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2404 { 3600 {
2405 int feed_count = 0;
2406
2407 do 3601 do
2408 { 3602 {
2409 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2410 3604
2411 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2438 } 3632 }
2439} 3633}
2440 3634
2441/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2442/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2443static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
2444periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2445{ 3640{
2446 int i; 3641 int i;
2447 3642
2448 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2461 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2462} 3657}
2463#endif 3658#endif
2464 3659
2465/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2466static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
2467timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2468{ 3664{
2469 int i; 3665 int i;
2470 3666
2471 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2480/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2481inline_speed void 3677inline_speed void
2482time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2483{ 3679{
2484#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2485 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2486 { 3682 {
2487 int i; 3683 int i;
2488 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2489 3685
2490 mn_now = get_clock (); 3686 mn_now = get_clock ();
2491 3687
2492 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2493 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2494 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2495 { 3691 {
2496 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2497 return; 3693 return;
2498 } 3694 }
2499 3695
… …
2513 ev_tstamp diff; 3709 ev_tstamp diff;
2514 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2515 3711
2516 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
2517 3713
2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2519 return; /* all is well */ 3715 return; /* all is well */
2520 3716
2521 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2522 mn_now = get_clock (); 3718 mn_now = get_clock ();
2523 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2532 else 3728 else
2533#endif 3729#endif
2534 { 3730 {
2535 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2536 3732
2537 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2538 { 3734 {
2539 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2540 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2541#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2542 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2545 3741
2546 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2547 } 3743 }
2548} 3744}
2549 3745
2550void 3746int
2551ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2552{ 3748{
2553#if EV_FEATURE_API 3749#if EV_FEATURE_API
2554 ++loop_depth; 3750 ++loop_depth;
2555#endif 3751#endif
… …
2565#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2566 ev_verify (EV_A); 3762 ev_verify (EV_A);
2567#endif 3763#endif
2568 3764
2569#ifndef _WIN32 3765#ifndef _WIN32
2570 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2571 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2572 { 3768 {
2573 curpid = getpid (); 3769 curpid = getpid ();
2574 postfork = 1; 3770 postfork = 1;
2575 } 3771 }
2576#endif 3772#endif
2577 3773
2578#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2579 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2580 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2581 if (forkcnt) 3777 if (forkcnt)
2582 { 3778 {
2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2584 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2585 } 3781 }
2586#endif 3782#endif
2587 3783
2588#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2589 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2590 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2591 { 3787 {
2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2593 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2594 } 3790 }
2595#endif 3791#endif
2596 3792
2597 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2598 break; 3794 break;
2599 3795
2600 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2601 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2602 loop_fork (EV_A); 3798 loop_fork (EV_A);
2603 3799
2604 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2605 fd_reify (EV_A); 3801 fd_reify (EV_A);
2606 3802
… …
2616 time_update (EV_A_ 1e100); 3812 time_update (EV_A_ 1e100);
2617 3813
2618 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
2620 3816
2621 ECB_MEMORY_FENCE; 3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2622 3818
2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2624 { 3820 {
2625 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2626 3822
2627 if (timercnt) 3823 if (timercnt)
2628 { 3824 {
… …
2637 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2638 } 3834 }
2639#endif 3835#endif
2640 3836
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2642 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2643 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2644 3840
2645 /* at this point, we NEED to wait, so we have to ensure */ 3841 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime; 3844 waittime = backend_mintime;
2649 3845
2650 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2651 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2652 { 3848 {
2653 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2654 3850
2655 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
2656 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
2657 3853
2658 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2659 { 3855 {
2660 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2661 waittime -= sleeptime; 3857 waittime -= sleeptime;
2662 } 3858 }
2663 } 3859 }
… …
2668#endif 3864#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2670 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672 3868
2673 pipe_write_wanted = 0; 3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2674 3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
2675 if (pipe_write_skipped) 3872 if (pipe_write_skipped)
2676 { 3873 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 } 3876 }
2680 3877
2681
2682 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2683 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2684 } 3880 }
2685 3881
2686 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
2694 idle_reify (EV_A); 3890 idle_reify (EV_A);
2695#endif 3891#endif
2696 3892
2697#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
2698 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2699 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif 3897#endif
2702 3898
2703 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2704 } 3900 }
2705 while (expect_true ( 3901 while (ecb_expect_true (
2706 activecnt 3902 activecnt
2707 && !loop_done 3903 && !loop_done
2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2709 )); 3905 ));
2710 3906
… …
2712 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2713 3909
2714#if EV_FEATURE_API 3910#if EV_FEATURE_API
2715 --loop_depth; 3911 --loop_depth;
2716#endif 3912#endif
2717}
2718 3913
3914 return activecnt;
3915}
3916
2719void 3917void
2720ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2721{ 3919{
2722 loop_done = how; 3920 loop_done = how;
2723} 3921}
2724 3922
2725void 3923void
2726ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2727{ 3925{
2728 ++activecnt; 3926 ++activecnt;
2729} 3927}
2730 3928
2731void 3929void
2732ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2733{ 3931{
2734 --activecnt; 3932 --activecnt;
2735} 3933}
2736 3934
2737void 3935void
2738ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2739{ 3937{
2740 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2741} 3939}
2742 3940
2743void 3941void
2744ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2745{ 3943{
2746 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2747} 3945}
2748 3946
2749void 3947void
2750ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2751{ 3949{
2752 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2753 3951
2754 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2755 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2772inline_size void 3970inline_size void
2773wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2774{ 3972{
2775 while (*head) 3973 while (*head)
2776 { 3974 {
2777 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2778 { 3976 {
2779 *head = elem->next; 3977 *head = elem->next;
2780 break; 3978 break;
2781 } 3979 }
2782 3980
… …
2794 w->pending = 0; 3992 w->pending = 0;
2795 } 3993 }
2796} 3994}
2797 3995
2798int 3996int
2799ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2800{ 3998{
2801 W w_ = (W)w; 3999 W w_ = (W)w;
2802 int pending = w_->pending; 4000 int pending = w_->pending;
2803 4001
2804 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2805 { 4003 {
2806 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2807 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2808 w_->pending = 0; 4006 w_->pending = 0;
2809 return p->events; 4007 return p->events;
… …
2836 w->active = 0; 4034 w->active = 0;
2837} 4035}
2838 4036
2839/*****************************************************************************/ 4037/*****************************************************************************/
2840 4038
2841void noinline 4039ecb_noinline
4040void
2842ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2843{ 4042{
2844 int fd = w->fd; 4043 int fd = w->fd;
2845 4044
2846 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2847 return; 4046 return;
2848 4047
2849 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2851 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2852 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2853 4055
2854 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2856 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2857 4062
2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2859 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2860 4065
2861 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2862} 4067}
2863 4068
2864void noinline 4069ecb_noinline
4070void
2865ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2866{ 4072{
2867 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2868 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2869 return; 4075 return;
2870 4076
2871 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2872 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2873 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2874 4083
2875 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2876 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2877 4086
2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2879 4088
2880 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2881} 4090}
2882 4091
2883void noinline 4092ecb_noinline
4093void
2884ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2885{ 4095{
2886 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2887 return; 4097 return;
2888 4098
2889 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2890 4100
2891 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2892 4102
2893 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2894 4104
2895 ++timercnt; 4105 ++timercnt;
2896 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2897 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2898 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2899 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2900 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2901 4111
2902 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2903 4113
2904 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2905} 4115}
2906 4116
2907void noinline 4117ecb_noinline
4118void
2908ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2909{ 4120{
2910 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2911 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2912 return; 4123 return;
2913 4124
2914 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2915 4126
2916 { 4127 {
… …
2918 4129
2919 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2920 4131
2921 --timercnt; 4132 --timercnt;
2922 4133
2923 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2924 { 4135 {
2925 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2926 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2927 } 4138 }
2928 } 4139 }
… …
2932 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2933 4144
2934 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2935} 4146}
2936 4147
2937void noinline 4148ecb_noinline
4149void
2938ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2939{ 4151{
2940 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2941 4155
2942 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2943 { 4157 {
2944 if (w->repeat) 4158 if (w->repeat)
2945 { 4159 {
… …
2958 4172
2959 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2960} 4174}
2961 4175
2962ev_tstamp 4176ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2964{ 4178{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2966} 4180}
2967 4181
2968#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2969void noinline 4183ecb_noinline
4184void
2970ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2971{ 4186{
2972 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2973 return; 4188 return;
2974 4189
2975 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2977 else if (w->interval) 4192 else if (w->interval)
… …
2984 4199
2985 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2986 4201
2987 ++periodiccnt; 4202 ++periodiccnt;
2988 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2989 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2990 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2991 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2992 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2993 4208
2994 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2995 4210
2996 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2997} 4212}
2998 4213
2999void noinline 4214ecb_noinline
4215void
3000ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3001{ 4217{
3002 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3003 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3004 return; 4220 return;
3005 4221
3006 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3007 4223
3008 { 4224 {
… …
3010 4226
3011 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3012 4228
3013 --periodiccnt; 4229 --periodiccnt;
3014 4230
3015 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
3016 { 4232 {
3017 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
3018 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
3019 } 4235 }
3020 } 4236 }
… …
3022 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
3023 4239
3024 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3025} 4241}
3026 4242
3027void noinline 4243ecb_noinline
4244void
3028ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3029{ 4246{
3030 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
3031 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
3032 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
3033} 4250}
… …
3037# define SA_RESTART 0 4254# define SA_RESTART 0
3038#endif 4255#endif
3039 4256
3040#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
3041 4258
3042void noinline 4259ecb_noinline
4260void
3043ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3044{ 4262{
3045 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3046 return; 4264 return;
3047 4265
3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3049 4267
3050#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3053 4271
3054 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
3055#endif 4274#endif
3056 4275
3057 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
3058 4277
3059#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
3118 } 4337 }
3119 4338
3120 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3121} 4340}
3122 4341
3123void noinline 4342ecb_noinline
4343void
3124ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3125{ 4345{
3126 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3127 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3128 return; 4348 return;
3129 4349
3130 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3131 4351
3132 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3160#endif 4380#endif
3161 4381
3162#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3163 4383
3164void 4384void
3165ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3166{ 4386{
3167#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3168 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3169#endif 4389#endif
3170 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3171 return; 4391 return;
3172 4392
3173 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3174 4394
3175 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
3177 4397
3178 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3179} 4399}
3180 4400
3181void 4401void
3182ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3183{ 4403{
3184 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3186 return; 4406 return;
3187 4407
3188 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3189 4409
3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3204 4424
3205#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3206#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3207#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
3208 4428
3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3210 4430
3211#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
3212 4432
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3215 4435
3216static void noinline 4436ecb_noinline
4437static void
3217infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
3218{ 4439{
3219 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
3220 4444
3221 if (w->wd >= 0) 4445 if (w->wd >= 0)
3222 { 4446 {
3223 struct statfs sfs; 4447 struct statfs sfs;
3224 4448
… …
3228 4452
3229 if (!fs_2625) 4453 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
3234 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3237 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else 4469 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3241 } 4471 }
… …
3276 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3277 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3278 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3279} 4509}
3280 4510
3281static void noinline 4511ecb_noinline
4512static void
3282infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3283{ 4514{
3284 int slot; 4515 int slot;
3285 int wd = w->wd; 4516 int wd = w->wd;
3286 4517
… …
3293 4524
3294 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3295 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3296} 4527}
3297 4528
3298static void noinline 4529ecb_noinline
4530static void
3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3300{ 4532{
3301 if (slot < 0) 4533 if (slot < 0)
3302 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3339 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3341 } 4573 }
3342} 4574}
3343 4575
3344inline_size void ecb_cold 4576inline_size ecb_cold
4577void
3345ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3346{ 4579{
3347 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3349 */ 4582 */
… …
3354} 4587}
3355 4588
3356inline_size int 4589inline_size int
3357infy_newfd (void) 4590infy_newfd (void)
3358{ 4591{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0) 4594 if (fd >= 0)
3362 return fd; 4595 return fd;
3363#endif 4596#endif
3364 return inotify_init (); 4597 return inotify_init ();
… …
3439#else 4672#else
3440# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3441#endif 4674#endif
3442 4675
3443void 4676void
3444ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3445{ 4678{
3446 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3447 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3448 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3449 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3450} 4683}
3451 4684
3452static void noinline 4685ecb_noinline
4686static void
3453stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3454{ 4688{
3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3456 4690
3457 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3488 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3489 } 4723 }
3490} 4724}
3491 4725
3492void 4726void
3493ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3494{ 4728{
3495 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3496 return; 4730 return;
3497 4731
3498 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3499 4733
3500 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3519 4753
3520 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3521} 4755}
3522 4756
3523void 4757void
3524ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3525{ 4759{
3526 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3527 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3528 return; 4762 return;
3529 4763
3530 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3531 4765
3532#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3545} 4779}
3546#endif 4780#endif
3547 4781
3548#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3549void 4783void
3550ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3551{ 4785{
3552 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3553 return; 4787 return;
3554 4788
3555 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3556 4790
3557 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3560 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3561 4795
3562 ++idleall; 4796 ++idleall;
3563 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3564 4798
3565 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3566 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3567 } 4801 }
3568 4802
3569 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3570} 4804}
3571 4805
3572void 4806void
3573ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3574{ 4808{
3575 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3576 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3577 return; 4811 return;
3578 4812
3579 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3580 4814
3581 { 4815 {
… …
3592} 4826}
3593#endif 4827#endif
3594 4828
3595#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3596void 4830void
3597ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3598{ 4832{
3599 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3600 return; 4834 return;
3601 4835
3602 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3603 4837
3604 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3605 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3606 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3607 4841
3608 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3609} 4843}
3610 4844
3611void 4845void
3612ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3613{ 4847{
3614 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3615 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3616 return; 4850 return;
3617 4851
3618 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3619 4853
3620 { 4854 {
… …
3630} 4864}
3631#endif 4865#endif
3632 4866
3633#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3634void 4868void
3635ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3636{ 4870{
3637 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3638 return; 4872 return;
3639 4873
3640 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3641 4875
3642 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3643 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3644 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3645 4879
3646 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3647} 4881}
3648 4882
3649void 4883void
3650ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3651{ 4885{
3652 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3653 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3654 return; 4888 return;
3655 4889
3656 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3657 4891
3658 { 4892 {
… …
3667 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3668} 4902}
3669#endif 4903#endif
3670 4904
3671#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3672void noinline 4906ecb_noinline
4907void
3673ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3674{ 4909{
3675 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
3676} 4911}
3677 4912
3678static void 4913static void
… …
3726 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3727} 4962}
3728#endif 4963#endif
3729 4964
3730void 4965void
3731ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3732{ 4967{
3733 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3734 return; 4969 return;
3735 4970
3736 { 4971 {
3737 EV_P = w->other; 4972 EV_P = w->other;
3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3757 4992
3758 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3759} 4994}
3760 4995
3761void 4996void
3762ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3763{ 4998{
3764 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3765 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3766 return; 5001 return;
3767 5002
3768 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3769 5004
3770 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3777} 5012}
3778#endif 5013#endif
3779 5014
3780#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3781void 5016void
3782ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3783{ 5018{
3784 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3785 return; 5020 return;
3786 5021
3787 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3788 5023
3789 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3790 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3791 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3792 5027
3793 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3794} 5029}
3795 5030
3796void 5031void
3797ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3798{ 5033{
3799 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3800 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3801 return; 5036 return;
3802 5037
3803 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3804 5039
3805 { 5040 {
… …
3815} 5050}
3816#endif 5051#endif
3817 5052
3818#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
3819void 5054void
3820ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3821{ 5056{
3822 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
3823 return; 5058 return;
3824 5059
3825 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3826 5061
3827 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3829 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
3830 5065
3831 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A); 5067 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
3834} 5069}
3835 5070
3836void 5071void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3838{ 5073{
3839 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
3841 return; 5076 return;
3842 5077
3843 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A); 5079 ev_ref (EV_A);
3845 5080
… …
3856} 5091}
3857#endif 5092#endif
3858 5093
3859#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3860void 5095void
3861ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3862{ 5097{
3863 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3864 return; 5099 return;
3865 5100
3866 w->sent = 0; 5101 w->sent = 0;
3867 5102
3868 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3869 5104
3870 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3871 5106
3872 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3873 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3874 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3875 5110
3876 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3877} 5112}
3878 5113
3879void 5114void
3880ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3881{ 5116{
3882 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3883 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3884 return; 5119 return;
3885 5120
3886 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3887 5122
3888 { 5123 {
… …
3896 5131
3897 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3898} 5133}
3899 5134
3900void 5135void
3901ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3902{ 5137{
3903 w->sent = 1; 5138 w->sent = 1;
3904 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3905} 5140}
3906#endif 5141#endif
… …
3943 5178
3944 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3945} 5180}
3946 5181
3947void 5182void
3948ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3949{ 5184{
3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3951
3952 if (expect_false (!once))
3953 {
3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3955 return;
3956 }
3957 5186
3958 once->cb = cb; 5187 once->cb = cb;
3959 once->arg = arg; 5188 once->arg = arg;
3960 5189
3961 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3974} 5203}
3975 5204
3976/*****************************************************************************/ 5205/*****************************************************************************/
3977 5206
3978#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
3979void ecb_cold 5208ecb_cold
5209void
3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3981{ 5211{
3982 int i, j; 5212 int i, j;
3983 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3984 5214
3985 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
4028 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4029#endif 5259#endif
4030 5260
4031#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
4032 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
4033 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
4034 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
4035 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
4036#endif 5266#endif
4037 5267
4038#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
4091 5321
4092#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
4093 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
4094#endif 5324#endif
4095 5325
4096EV_CPP(})
4097

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